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2112 lines
79 KiB
2112 lines
79 KiB
/**
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******************************************************************************
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* @file stm32f1xx_hal_adc.c
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* @author MCD Application Team
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* @version V1.0.4
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* @date 29-April-2016
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* @brief This file provides firmware functions to manage the following
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* functionalities of the Analog to Digital Convertor (ADC)
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* peripheral:
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* + Initialization and de-initialization functions
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* ++ Initialization and Configuration of ADC
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* + Operation functions
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* ++ Start, stop, get result of conversions of regular
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* group, using 3 possible modes: polling, interruption or DMA.
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* + Control functions
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* ++ Channels configuration on regular group
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* ++ Channels configuration on injected group
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* ++ Analog Watchdog configuration
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* + State functions
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* ++ ADC state machine management
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* ++ Interrupts and flags management
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* Other functions (extended functions) are available in file
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* "stm32f1xx_hal_adc_ex.c".
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*
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@verbatim
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==============================================================================
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##### ADC peripheral features #####
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==============================================================================
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[..]
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(+) 12-bit resolution
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(+) Interrupt generation at the end of regular conversion, end of injected
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conversion, and in case of analog watchdog or overrun events.
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(+) Single and continuous conversion modes.
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(+) Scan mode for conversion of several channels sequentially.
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(+) Data alignment with in-built data coherency.
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(+) Programmable sampling time (channel wise)
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(+) ADC conversion of regular group and injected group.
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(+) External trigger (timer or EXTI)
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for both regular and injected groups.
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(+) DMA request generation for transfer of conversions data of regular group.
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(+) Multimode Dual mode (available on devices with 2 ADCs or more).
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(+) Configurable DMA data storage in Multimode Dual mode (available on devices
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with 2 DCs or more).
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(+) Configurable delay between conversions in Dual interleaved mode (available
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on devices with 2 DCs or more).
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(+) ADC calibration
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(+) ADC supply requirements: 2.4 V to 3.6 V at full speed and down to 1.8 V at
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slower speed.
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(+) ADC input range: from Vref- (connected to Vssa) to Vref+ (connected to
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Vdda or to an external voltage reference).
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##### How to use this driver #####
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==============================================================================
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[..]
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*** Configuration of top level parameters related to ADC ***
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============================================================
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[..]
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(#) Enable the ADC interface
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(++) As prerequisite, ADC clock must be configured at RCC top level.
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Caution: On STM32F1, ADC clock frequency max is 14MHz (refer
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to device datasheet).
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Therefore, ADC clock prescaler must be configured in
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function of ADC clock source frequency to remain below
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this maximum frequency.
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(++) One clock setting is mandatory:
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ADC clock (core clock, also possibly conversion clock).
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(+++) Example:
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Into HAL_ADC_MspInit() (recommended code location) or with
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other device clock parameters configuration:
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(+++) RCC_PeriphCLKInitTypeDef PeriphClkInit;
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(+++) __ADC1_CLK_ENABLE();
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(+++) PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
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(+++) PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2;
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(+++) HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);
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(#) ADC pins configuration
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(++) Enable the clock for the ADC GPIOs
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using macro __HAL_RCC_GPIOx_CLK_ENABLE()
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(++) Configure these ADC pins in analog mode
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using function HAL_GPIO_Init()
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(#) Optionally, in case of usage of ADC with interruptions:
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(++) Configure the NVIC for ADC
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using function HAL_NVIC_EnableIRQ(ADCx_IRQn)
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(++) Insert the ADC interruption handler function HAL_ADC_IRQHandler()
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into the function of corresponding ADC interruption vector
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ADCx_IRQHandler().
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(#) Optionally, in case of usage of DMA:
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(++) Configure the DMA (DMA channel, mode normal or circular, ...)
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using function HAL_DMA_Init().
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(++) Configure the NVIC for DMA
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using function HAL_NVIC_EnableIRQ(DMAx_Channelx_IRQn)
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(++) Insert the ADC interruption handler function HAL_ADC_IRQHandler()
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into the function of corresponding DMA interruption vector
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DMAx_Channelx_IRQHandler().
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*** Configuration of ADC, groups regular/injected, channels parameters ***
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==========================================================================
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[..]
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(#) Configure the ADC parameters (resolution, data alignment, ...)
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and regular group parameters (conversion trigger, sequencer, ...)
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using function HAL_ADC_Init().
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(#) Configure the channels for regular group parameters (channel number,
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channel rank into sequencer, ..., into regular group)
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using function HAL_ADC_ConfigChannel().
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(#) Optionally, configure the injected group parameters (conversion trigger,
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sequencer, ..., of injected group)
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and the channels for injected group parameters (channel number,
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channel rank into sequencer, ..., into injected group)
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using function HAL_ADCEx_InjectedConfigChannel().
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(#) Optionally, configure the analog watchdog parameters (channels
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monitored, thresholds, ...)
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using function HAL_ADC_AnalogWDGConfig().
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(#) Optionally, for devices with several ADC instances: configure the
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multimode parameters
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using function HAL_ADCEx_MultiModeConfigChannel().
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*** Execution of ADC conversions ***
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====================================
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[..]
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(#) Optionally, perform an automatic ADC calibration to improve the
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conversion accuracy
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using function HAL_ADCEx_Calibration_Start().
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(#) ADC driver can be used among three modes: polling, interruption,
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transfer by DMA.
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(++) ADC conversion by polling:
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(+++) Activate the ADC peripheral and start conversions
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using function HAL_ADC_Start()
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(+++) Wait for ADC conversion completion
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using function HAL_ADC_PollForConversion()
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(or for injected group: HAL_ADCEx_InjectedPollForConversion() )
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(+++) Retrieve conversion results
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using function HAL_ADC_GetValue()
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(or for injected group: HAL_ADCEx_InjectedGetValue() )
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(+++) Stop conversion and disable the ADC peripheral
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using function HAL_ADC_Stop()
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(++) ADC conversion by interruption:
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(+++) Activate the ADC peripheral and start conversions
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using function HAL_ADC_Start_IT()
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(+++) Wait for ADC conversion completion by call of function
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HAL_ADC_ConvCpltCallback()
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(this function must be implemented in user program)
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(or for injected group: HAL_ADCEx_InjectedConvCpltCallback() )
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(+++) Retrieve conversion results
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using function HAL_ADC_GetValue()
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(or for injected group: HAL_ADCEx_InjectedGetValue() )
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(+++) Stop conversion and disable the ADC peripheral
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using function HAL_ADC_Stop_IT()
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(++) ADC conversion with transfer by DMA:
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(+++) Activate the ADC peripheral and start conversions
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using function HAL_ADC_Start_DMA()
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(+++) Wait for ADC conversion completion by call of function
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HAL_ADC_ConvCpltCallback() or HAL_ADC_ConvHalfCpltCallback()
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(these functions must be implemented in user program)
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(+++) Conversion results are automatically transferred by DMA into
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destination variable address.
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(+++) Stop conversion and disable the ADC peripheral
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using function HAL_ADC_Stop_DMA()
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(++) For devices with several ADCs: ADC multimode conversion
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with transfer by DMA:
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(+++) Activate the ADC peripheral (slave) and start conversions
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using function HAL_ADC_Start()
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(+++) Activate the ADC peripheral (master) and start conversions
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using function HAL_ADCEx_MultiModeStart_DMA()
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(+++) Wait for ADC conversion completion by call of function
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HAL_ADC_ConvCpltCallback() or HAL_ADC_ConvHalfCpltCallback()
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(these functions must be implemented in user program)
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(+++) Conversion results are automatically transferred by DMA into
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destination variable address.
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(+++) Stop conversion and disable the ADC peripheral (master)
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using function HAL_ADCEx_MultiModeStop_DMA()
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(+++) Stop conversion and disable the ADC peripheral (slave)
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using function HAL_ADC_Stop_IT()
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[..]
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(@) Callback functions must be implemented in user program:
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(+@) HAL_ADC_ErrorCallback()
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(+@) HAL_ADC_LevelOutOfWindowCallback() (callback of analog watchdog)
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(+@) HAL_ADC_ConvCpltCallback()
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(+@) HAL_ADC_ConvHalfCpltCallback
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(+@) HAL_ADCEx_InjectedConvCpltCallback()
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*** Deinitialization of ADC ***
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============================================================
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[..]
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(#) Disable the ADC interface
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(++) ADC clock can be hard reset and disabled at RCC top level.
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(++) Hard reset of ADC peripherals
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using macro __ADCx_FORCE_RESET(), __ADCx_RELEASE_RESET().
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(++) ADC clock disable
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using the equivalent macro/functions as configuration step.
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(+++) Example:
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Into HAL_ADC_MspDeInit() (recommended code location) or with
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other device clock parameters configuration:
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(+++) PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC
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(+++) PeriphClkInit.AdcClockSelection = RCC_ADCPLLCLK2_OFF
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(+++) HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit)
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(#) ADC pins configuration
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(++) Disable the clock for the ADC GPIOs
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using macro __HAL_RCC_GPIOx_CLK_DISABLE()
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(#) Optionally, in case of usage of ADC with interruptions:
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(++) Disable the NVIC for ADC
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using function HAL_NVIC_EnableIRQ(ADCx_IRQn)
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(#) Optionally, in case of usage of DMA:
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(++) Deinitialize the DMA
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using function HAL_DMA_Init().
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(++) Disable the NVIC for DMA
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using function HAL_NVIC_EnableIRQ(DMAx_Channelx_IRQn)
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[..]
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@endverbatim
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f1xx_hal.h"
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/** @addtogroup STM32F1xx_HAL_Driver
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* @{
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*/
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/** @defgroup ADC ADC
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* @brief ADC HAL module driver
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* @{
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*/
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#ifdef HAL_ADC_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup ADC_Private_Constants ADC Private Constants
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* @{
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*/
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/* Timeout values for ADC enable and disable settling time. */
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/* Values defined to be higher than worst cases: low clocks freq, */
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/* maximum prescaler. */
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/* Ex of profile low frequency : Clock source at 0.1 MHz, ADC clock */
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/* prescaler 4, sampling time 12.5 ADC clock cycles, resolution 12 bits. */
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/* Unit: ms */
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#define ADC_ENABLE_TIMEOUT ((uint32_t) 2)
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#define ADC_DISABLE_TIMEOUT ((uint32_t) 2)
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/* Delay for ADC stabilization time. */
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/* Maximum delay is 1us (refer to device datasheet, parameter tSTAB). */
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/* Unit: us */
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#define ADC_STAB_DELAY_US ((uint32_t) 1)
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/* Delay for temperature sensor stabilization time. */
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/* Maximum delay is 10us (refer to device datasheet, parameter tSTART). */
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/* Unit: us */
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#define ADC_TEMPSENSOR_DELAY_US ((uint32_t) 10)
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/**
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* @}
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*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/** @defgroup ADC_Private_Functions ADC Private Functions
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* @{
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*/
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup ADC_Exported_Functions ADC Exported Functions
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* @{
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*/
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/** @defgroup ADC_Exported_Functions_Group1 Initialization/de-initialization functions
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* @brief Initialization and Configuration functions
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*
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@verbatim
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===============================================================================
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##### Initialization and de-initialization functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Initialize and configure the ADC.
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(+) De-initialize the ADC.
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@endverbatim
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* @{
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*/
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/**
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* @brief Initializes the ADC peripheral and regular group according to
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* parameters specified in structure "ADC_InitTypeDef".
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* @note As prerequisite, ADC clock must be configured at RCC top level
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* (clock source APB2).
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* See commented example code below that can be copied and uncommented
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* into HAL_ADC_MspInit().
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* @note Possibility to update parameters on the fly:
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* This function initializes the ADC MSP (HAL_ADC_MspInit()) only when
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* coming from ADC state reset. Following calls to this function can
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* be used to reconfigure some parameters of ADC_InitTypeDef
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* structure on the fly, without modifying MSP configuration. If ADC
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* MSP has to be modified again, HAL_ADC_DeInit() must be called
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* before HAL_ADC_Init().
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* The setting of these parameters is conditioned to ADC state.
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* For parameters constraints, see comments of structure
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* "ADC_InitTypeDef".
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* @note This function configures the ADC within 2 scopes: scope of entire
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* ADC and scope of regular group. For parameters details, see comments
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* of structure "ADC_InitTypeDef".
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* @param hadc: ADC handle
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc)
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{
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HAL_StatusTypeDef tmp_hal_status = HAL_OK;
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uint32_t tmp_cr1 = 0;
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uint32_t tmp_cr2 = 0;
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uint32_t tmp_sqr1 = 0;
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/* Check ADC handle */
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if(hadc == NULL)
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{
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return HAL_ERROR;
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}
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/* Check the parameters */
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assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
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assert_param(IS_ADC_DATA_ALIGN(hadc->Init.DataAlign));
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assert_param(IS_ADC_SCAN_MODE(hadc->Init.ScanConvMode));
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assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode));
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assert_param(IS_ADC_EXTTRIG(hadc->Init.ExternalTrigConv));
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if(hadc->Init.ScanConvMode != ADC_SCAN_DISABLE)
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{
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assert_param(IS_ADC_REGULAR_NB_CONV(hadc->Init.NbrOfConversion));
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assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DiscontinuousConvMode));
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if(hadc->Init.DiscontinuousConvMode != DISABLE)
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{
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assert_param(IS_ADC_REGULAR_DISCONT_NUMBER(hadc->Init.NbrOfDiscConversion));
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}
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}
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/* As prerequisite, into HAL_ADC_MspInit(), ADC clock must be configured */
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/* at RCC top level. */
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/* Refer to header of this file for more details on clock enabling */
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/* procedure. */
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/* Actions performed only if ADC is coming from state reset: */
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/* - Initialization of ADC MSP */
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if (hadc->State == HAL_ADC_STATE_RESET)
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{
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/* Initialize ADC error code */
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ADC_CLEAR_ERRORCODE(hadc);
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/* Allocate lock resource and initialize it */
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hadc->Lock = HAL_UNLOCKED;
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/* Init the low level hardware */
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HAL_ADC_MspInit(hadc);
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}
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/* Stop potential conversion on going, on regular and injected groups */
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/* Disable ADC peripheral */
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/* Note: In case of ADC already enabled, precaution to not launch an */
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/* unwanted conversion while modifying register CR2 by writing 1 to */
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/* bit ADON. */
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tmp_hal_status = ADC_ConversionStop_Disable(hadc);
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/* Configuration of ADC parameters if previous preliminary actions are */
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/* correctly completed. */
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if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL) &&
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(tmp_hal_status == HAL_OK) )
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{
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/* Set ADC state */
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ADC_STATE_CLR_SET(hadc->State,
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HAL_ADC_STATE_REG_BUSY | HAL_ADC_STATE_INJ_BUSY,
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HAL_ADC_STATE_BUSY_INTERNAL);
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/* Set ADC parameters */
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/* Configuration of ADC: */
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/* - data alignment */
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/* - external trigger to start conversion */
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/* - external trigger polarity (always set to 1, because needed for all */
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/* triggers: external trigger of SW start) */
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/* - continuous conversion mode */
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/* Note: External trigger polarity (ADC_CR2_EXTTRIG) is set into */
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/* HAL_ADC_Start_xxx functions because if set in this function, */
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/* a conversion on injected group would start a conversion also on */
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/* regular group after ADC enabling. */
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tmp_cr2 |= (hadc->Init.DataAlign |
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ADC_CFGR_EXTSEL(hadc, hadc->Init.ExternalTrigConv) |
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ADC_CR2_CONTINUOUS(hadc->Init.ContinuousConvMode) );
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/* Configuration of ADC: */
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/* - scan mode */
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/* - discontinuous mode disable/enable */
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/* - discontinuous mode number of conversions */
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tmp_cr1 |= (ADC_CR1_SCAN_SET(hadc->Init.ScanConvMode));
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/* Enable discontinuous mode only if continuous mode is disabled */
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/* Note: If parameter "Init.ScanConvMode" is set to disable, parameter */
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/* discontinuous is set anyway, but will have no effect on ADC HW. */
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if (hadc->Init.DiscontinuousConvMode == ENABLE)
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{
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if (hadc->Init.ContinuousConvMode == DISABLE)
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{
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/* Enable the selected ADC regular discontinuous mode */
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/* Set the number of channels to be converted in discontinuous mode */
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SET_BIT(tmp_cr1, ADC_CR1_DISCEN |
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ADC_CR1_DISCONTINUOUS_NUM(hadc->Init.NbrOfDiscConversion) );
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}
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else
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{
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/* ADC regular group settings continuous and sequencer discontinuous*/
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/* cannot be enabled simultaneously. */
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/* Update ADC state machine to error */
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SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
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/* Set ADC error code to ADC IP internal error */
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SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
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}
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}
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/* Update ADC configuration register CR1 with previous settings */
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MODIFY_REG(hadc->Instance->CR1,
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ADC_CR1_SCAN |
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ADC_CR1_DISCEN |
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ADC_CR1_DISCNUM ,
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tmp_cr1 );
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/* Update ADC configuration register CR2 with previous settings */
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MODIFY_REG(hadc->Instance->CR2,
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ADC_CR2_ALIGN |
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ADC_CR2_EXTSEL |
|
|
ADC_CR2_EXTTRIG |
|
|
ADC_CR2_CONT ,
|
|
tmp_cr2 );
|
|
|
|
/* Configuration of regular group sequencer: */
|
|
/* - if scan mode is disabled, regular channels sequence length is set to */
|
|
/* 0x00: 1 channel converted (channel on regular rank 1) */
|
|
/* Parameter "NbrOfConversion" is discarded. */
|
|
/* Note: Scan mode is present by hardware on this device and, if */
|
|
/* disabled, discards automatically nb of conversions. Anyway, nb of */
|
|
/* conversions is forced to 0x00 for alignment over all STM32 devices. */
|
|
/* - if scan mode is enabled, regular channels sequence length is set to */
|
|
/* parameter "NbrOfConversion" */
|
|
if (ADC_CR1_SCAN_SET(hadc->Init.ScanConvMode) == ADC_SCAN_ENABLE)
|
|
{
|
|
tmp_sqr1 = ADC_SQR1_L_SHIFT(hadc->Init.NbrOfConversion);
|
|
}
|
|
|
|
MODIFY_REG(hadc->Instance->SQR1,
|
|
ADC_SQR1_L ,
|
|
tmp_sqr1 );
|
|
|
|
/* Check back that ADC registers have effectively been configured to */
|
|
/* ensure of no potential problem of ADC core IP clocking. */
|
|
/* Check through register CR2 (excluding bits set in other functions: */
|
|
/* execution control bits (ADON, JSWSTART, SWSTART), regular group bits */
|
|
/* (DMA), injected group bits (JEXTTRIG and JEXTSEL), channel internal */
|
|
/* measurement path bit (TSVREFE). */
|
|
if (READ_BIT(hadc->Instance->CR2, ~(ADC_CR2_ADON | ADC_CR2_DMA |
|
|
ADC_CR2_SWSTART | ADC_CR2_JSWSTART |
|
|
ADC_CR2_JEXTTRIG | ADC_CR2_JEXTSEL |
|
|
ADC_CR2_TSVREFE ))
|
|
== tmp_cr2)
|
|
{
|
|
/* Set ADC error code to none */
|
|
ADC_CLEAR_ERRORCODE(hadc);
|
|
|
|
/* Set the ADC state */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_BUSY_INTERNAL,
|
|
HAL_ADC_STATE_READY);
|
|
}
|
|
else
|
|
{
|
|
/* Update ADC state machine to error */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_BUSY_INTERNAL,
|
|
HAL_ADC_STATE_ERROR_INTERNAL);
|
|
|
|
/* Set ADC error code to ADC IP internal error */
|
|
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
|
|
|
|
tmp_hal_status = HAL_ERROR;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
/* Update ADC state machine to error */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
|
|
|
|
tmp_hal_status = HAL_ERROR;
|
|
}
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Deinitialize the ADC peripheral registers to their default reset
|
|
* values, with deinitialization of the ADC MSP.
|
|
* If needed, the example code can be copied and uncommented into
|
|
* function HAL_ADC_MspDeInit().
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check ADC handle */
|
|
if(hadc == NULL)
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Set ADC state */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL);
|
|
|
|
/* Stop potential conversion on going, on regular and injected groups */
|
|
/* Disable ADC peripheral */
|
|
tmp_hal_status = ADC_ConversionStop_Disable(hadc);
|
|
|
|
|
|
/* Configuration of ADC parameters if previous preliminary actions are */
|
|
/* correctly completed. */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* ========== Reset ADC registers ========== */
|
|
|
|
|
|
|
|
|
|
/* Reset register SR */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_AWD | ADC_FLAG_JEOC | ADC_FLAG_EOC |
|
|
ADC_FLAG_JSTRT | ADC_FLAG_STRT));
|
|
|
|
/* Reset register CR1 */
|
|
CLEAR_BIT(hadc->Instance->CR1, (ADC_CR1_AWDEN | ADC_CR1_JAWDEN | ADC_CR1_DISCNUM |
|
|
ADC_CR1_JDISCEN | ADC_CR1_DISCEN | ADC_CR1_JAUTO |
|
|
ADC_CR1_AWDSGL | ADC_CR1_SCAN | ADC_CR1_JEOCIE |
|
|
ADC_CR1_AWDIE | ADC_CR1_EOCIE | ADC_CR1_AWDCH ));
|
|
|
|
/* Reset register CR2 */
|
|
CLEAR_BIT(hadc->Instance->CR2, (ADC_CR2_TSVREFE | ADC_CR2_SWSTART | ADC_CR2_JSWSTART |
|
|
ADC_CR2_EXTTRIG | ADC_CR2_EXTSEL | ADC_CR2_JEXTTRIG |
|
|
ADC_CR2_JEXTSEL | ADC_CR2_ALIGN | ADC_CR2_DMA |
|
|
ADC_CR2_RSTCAL | ADC_CR2_CAL | ADC_CR2_CONT |
|
|
ADC_CR2_ADON ));
|
|
|
|
/* Reset register SMPR1 */
|
|
CLEAR_BIT(hadc->Instance->SMPR1, (ADC_SMPR1_SMP17 | ADC_SMPR1_SMP16 | ADC_SMPR1_SMP15 |
|
|
ADC_SMPR1_SMP14 | ADC_SMPR1_SMP13 | ADC_SMPR1_SMP12 |
|
|
ADC_SMPR1_SMP11 | ADC_SMPR1_SMP10 ));
|
|
|
|
/* Reset register SMPR2 */
|
|
CLEAR_BIT(hadc->Instance->SMPR2, (ADC_SMPR2_SMP9 | ADC_SMPR2_SMP8 | ADC_SMPR2_SMP7 |
|
|
ADC_SMPR2_SMP6 | ADC_SMPR2_SMP5 | ADC_SMPR2_SMP4 |
|
|
ADC_SMPR2_SMP3 | ADC_SMPR2_SMP2 | ADC_SMPR2_SMP1 |
|
|
ADC_SMPR2_SMP0 ));
|
|
|
|
/* Reset register JOFR1 */
|
|
CLEAR_BIT(hadc->Instance->JOFR1, ADC_JOFR1_JOFFSET1);
|
|
/* Reset register JOFR2 */
|
|
CLEAR_BIT(hadc->Instance->JOFR2, ADC_JOFR2_JOFFSET2);
|
|
/* Reset register JOFR3 */
|
|
CLEAR_BIT(hadc->Instance->JOFR3, ADC_JOFR3_JOFFSET3);
|
|
/* Reset register JOFR4 */
|
|
CLEAR_BIT(hadc->Instance->JOFR4, ADC_JOFR4_JOFFSET4);
|
|
|
|
/* Reset register HTR */
|
|
CLEAR_BIT(hadc->Instance->HTR, ADC_HTR_HT);
|
|
/* Reset register LTR */
|
|
CLEAR_BIT(hadc->Instance->LTR, ADC_LTR_LT);
|
|
|
|
/* Reset register SQR1 */
|
|
CLEAR_BIT(hadc->Instance->SQR1, ADC_SQR1_L |
|
|
ADC_SQR1_SQ16 | ADC_SQR1_SQ15 |
|
|
ADC_SQR1_SQ14 | ADC_SQR1_SQ13 );
|
|
|
|
/* Reset register SQR1 */
|
|
CLEAR_BIT(hadc->Instance->SQR1, ADC_SQR1_L |
|
|
ADC_SQR1_SQ16 | ADC_SQR1_SQ15 |
|
|
ADC_SQR1_SQ14 | ADC_SQR1_SQ13 );
|
|
|
|
/* Reset register SQR2 */
|
|
CLEAR_BIT(hadc->Instance->SQR2, ADC_SQR2_SQ12 | ADC_SQR2_SQ11 | ADC_SQR2_SQ10 |
|
|
ADC_SQR2_SQ9 | ADC_SQR2_SQ8 | ADC_SQR2_SQ7 );
|
|
|
|
/* Reset register SQR3 */
|
|
CLEAR_BIT(hadc->Instance->SQR3, ADC_SQR3_SQ6 | ADC_SQR3_SQ5 | ADC_SQR3_SQ4 |
|
|
ADC_SQR3_SQ3 | ADC_SQR3_SQ2 | ADC_SQR3_SQ1 );
|
|
|
|
/* Reset register JSQR */
|
|
CLEAR_BIT(hadc->Instance->JSQR, ADC_JSQR_JL |
|
|
ADC_JSQR_JSQ4 | ADC_JSQR_JSQ3 |
|
|
ADC_JSQR_JSQ2 | ADC_JSQR_JSQ1 );
|
|
|
|
/* Reset register JSQR */
|
|
CLEAR_BIT(hadc->Instance->JSQR, ADC_JSQR_JL |
|
|
ADC_JSQR_JSQ4 | ADC_JSQR_JSQ3 |
|
|
ADC_JSQR_JSQ2 | ADC_JSQR_JSQ1 );
|
|
|
|
/* Reset register DR */
|
|
/* bits in access mode read only, no direct reset applicable*/
|
|
|
|
/* Reset registers JDR1, JDR2, JDR3, JDR4 */
|
|
/* bits in access mode read only, no direct reset applicable*/
|
|
|
|
/* ========== Hard reset ADC peripheral ========== */
|
|
/* Performs a global reset of the entire ADC peripheral: ADC state is */
|
|
/* forced to a similar state after device power-on. */
|
|
/* If needed, copy-paste and uncomment the following reset code into */
|
|
/* function "void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)": */
|
|
/* */
|
|
/* __HAL_RCC_ADC1_FORCE_RESET() */
|
|
/* __HAL_RCC_ADC1_RELEASE_RESET() */
|
|
|
|
/* DeInit the low level hardware */
|
|
HAL_ADC_MspDeInit(hadc);
|
|
|
|
/* Set ADC error code to none */
|
|
ADC_CLEAR_ERRORCODE(hadc);
|
|
|
|
/* Set ADC state */
|
|
hadc->State = HAL_ADC_STATE_RESET;
|
|
|
|
}
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Initializes the ADC MSP.
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(hadc);
|
|
/* NOTE : This function should not be modified. When the callback is needed,
|
|
function HAL_ADC_MspInit must be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief DeInitializes the ADC MSP.
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(hadc);
|
|
/* NOTE : This function should not be modified. When the callback is needed,
|
|
function HAL_ADC_MspDeInit must be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup ADC_Exported_Functions_Group2 IO operation functions
|
|
* @brief Input and Output operation functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### IO operation functions #####
|
|
===============================================================================
|
|
[..] This section provides functions allowing to:
|
|
(+) Start conversion of regular group.
|
|
(+) Stop conversion of regular group.
|
|
(+) Poll for conversion complete on regular group.
|
|
(+) Poll for conversion event.
|
|
(+) Get result of regular channel conversion.
|
|
(+) Start conversion of regular group and enable interruptions.
|
|
(+) Stop conversion of regular group and disable interruptions.
|
|
(+) Handle ADC interrupt request
|
|
(+) Start conversion of regular group and enable DMA transfer.
|
|
(+) Stop conversion of regular group and disable ADC DMA transfer.
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Enables ADC, starts conversion of regular group.
|
|
* Interruptions enabled in this function: None.
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Enable the ADC peripheral */
|
|
tmp_hal_status = ADC_Enable(hadc);
|
|
|
|
/* Start conversion if ADC is effectively enabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Set ADC state */
|
|
/* - Clear state bitfield related to regular group conversion results */
|
|
/* - Set state bitfield related to regular operation */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC,
|
|
HAL_ADC_STATE_REG_BUSY);
|
|
|
|
/* Set group injected state (from auto-injection) and multimode state */
|
|
/* for all cases of multimode: independent mode, multimode ADC master */
|
|
/* or multimode ADC slave (for devices with several ADCs): */
|
|
if (ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc))
|
|
{
|
|
/* Set ADC state (ADC independent or master) */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
|
|
|
|
/* If conversions on group regular are also triggering group injected, */
|
|
/* update ADC state. */
|
|
if (READ_BIT(hadc->Instance->CR1, ADC_CR1_JAUTO) != RESET)
|
|
{
|
|
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Set ADC state (ADC slave) */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
|
|
|
|
/* If conversions on group regular are also triggering group injected, */
|
|
/* update ADC state. */
|
|
if (ADC_MULTIMODE_AUTO_INJECTED(hadc))
|
|
{
|
|
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
|
|
}
|
|
}
|
|
|
|
/* State machine update: Check if an injected conversion is ongoing */
|
|
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_INJ_BUSY))
|
|
{
|
|
/* Reset ADC error code fields related to conversions on group regular */
|
|
CLEAR_BIT(hadc->ErrorCode, (HAL_ADC_ERROR_OVR | HAL_ADC_ERROR_DMA));
|
|
}
|
|
else
|
|
{
|
|
/* Reset ADC all error code fields */
|
|
ADC_CLEAR_ERRORCODE(hadc);
|
|
}
|
|
|
|
/* Process unlocked */
|
|
/* Unlock before starting ADC conversions: in case of potential */
|
|
/* interruption, to let the process to ADC IRQ Handler. */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Clear regular group conversion flag */
|
|
/* (To ensure of no unknown state from potential previous ADC operations) */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOC);
|
|
|
|
/* Enable conversion of regular group. */
|
|
/* If software start has been selected, conversion starts immediately. */
|
|
/* If external trigger has been selected, conversion will start at next */
|
|
/* trigger event. */
|
|
/* Case of multimode enabled: */
|
|
/* - if ADC is slave, ADC is enabled only (conversion is not started). */
|
|
/* - if ADC is master, ADC is enabled and conversion is started. */
|
|
/* If ADC is master, ADC is enabled and conversion is started. */
|
|
/* Note: Alternate trigger for single conversion could be to force an */
|
|
/* additional set of bit ADON "hadc->Instance->CR2 |= ADC_CR2_ADON;"*/
|
|
if (ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
|
|
ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc) )
|
|
{
|
|
/* Start ADC conversion on regular group with SW start */
|
|
SET_BIT(hadc->Instance->CR2, (ADC_CR2_SWSTART | ADC_CR2_EXTTRIG));
|
|
}
|
|
else
|
|
{
|
|
/* Start ADC conversion on regular group with external trigger */
|
|
SET_BIT(hadc->Instance->CR2, ADC_CR2_EXTTRIG);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
}
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Stop ADC conversion of regular group (and injected channels in
|
|
* case of auto_injection mode), disable ADC peripheral.
|
|
* @note: ADC peripheral disable is forcing stop of potential
|
|
* conversion on injected group. If injected group is under use, it
|
|
* should be preliminarily stopped using HAL_ADCEx_InjectedStop function.
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status.
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_Stop(ADC_HandleTypeDef* hadc)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Stop potential conversion on going, on regular and injected groups */
|
|
/* Disable ADC peripheral */
|
|
tmp_hal_status = ADC_ConversionStop_Disable(hadc);
|
|
|
|
/* Check if ADC is effectively disabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Set ADC state */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_REG_BUSY | HAL_ADC_STATE_INJ_BUSY,
|
|
HAL_ADC_STATE_READY);
|
|
}
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Wait for regular group conversion to be completed.
|
|
* @note This function cannot be used in a particular setup: ADC configured
|
|
* in DMA mode.
|
|
* In this case, DMA resets the flag EOC and polling cannot be
|
|
* performed on each conversion.
|
|
* @note On STM32F1 devices, limitation in case of sequencer enabled
|
|
* (several ranks selected): polling cannot be done on each
|
|
* conversion inside the sequence. In this case, polling is replaced by
|
|
* wait for maximum conversion time.
|
|
* @param hadc: ADC handle
|
|
* @param Timeout: Timeout value in millisecond.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_PollForConversion(ADC_HandleTypeDef* hadc, uint32_t Timeout)
|
|
{
|
|
uint32_t tickstart = 0;
|
|
|
|
/* Variables for polling in case of scan mode enabled and polling for each */
|
|
/* conversion. */
|
|
__IO uint32_t Conversion_Timeout_CPU_cycles = 0;
|
|
uint32_t Conversion_Timeout_CPU_cycles_max = 0;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Get tick count */
|
|
tickstart = HAL_GetTick();
|
|
|
|
/* Verification that ADC configuration is compliant with polling for */
|
|
/* each conversion: */
|
|
/* Particular case is ADC configured in DMA mode */
|
|
if (HAL_IS_BIT_SET(hadc->Instance->CR2, ADC_CR2_DMA))
|
|
{
|
|
/* Update ADC state machine to error */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Polling for end of conversion: differentiation if single/sequence */
|
|
/* conversion. */
|
|
/* - If single conversion for regular group (Scan mode disabled or enabled */
|
|
/* with NbrOfConversion =1), flag EOC is used to determine the */
|
|
/* conversion completion. */
|
|
/* - If sequence conversion for regular group (scan mode enabled and */
|
|
/* NbrOfConversion >=2), flag EOC is set only at the end of the */
|
|
/* sequence. */
|
|
/* To poll for each conversion, the maximum conversion time is computed */
|
|
/* from ADC conversion time (selected sampling time + conversion time of */
|
|
/* 12.5 ADC clock cycles) and APB2/ADC clock prescalers (depending on */
|
|
/* settings, conversion time range can be from 28 to 32256 CPU cycles). */
|
|
/* As flag EOC is not set after each conversion, no timeout status can */
|
|
/* be set. */
|
|
if (HAL_IS_BIT_CLR(hadc->Instance->CR1, ADC_CR1_SCAN) &&
|
|
HAL_IS_BIT_CLR(hadc->Instance->SQR1, ADC_SQR1_L) )
|
|
{
|
|
/* Wait until End of Conversion flag is raised */
|
|
while(HAL_IS_BIT_CLR(hadc->Instance->SR, ADC_FLAG_EOC))
|
|
{
|
|
/* Check if timeout is disabled (set to infinite wait) */
|
|
if(Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if((Timeout == 0) || ((HAL_GetTick() - tickstart ) > Timeout))
|
|
{
|
|
/* Update ADC state machine to timeout */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Replace polling by wait for maximum conversion time */
|
|
/* - Computation of CPU clock cycles corresponding to ADC clock cycles */
|
|
/* and ADC maximum conversion cycles on all channels. */
|
|
/* - Wait for the expected ADC clock cycles delay */
|
|
Conversion_Timeout_CPU_cycles_max = ((SystemCoreClock
|
|
/ HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_ADC))
|
|
* ADC_CONVCYCLES_MAX_RANGE(hadc) );
|
|
|
|
while(Conversion_Timeout_CPU_cycles < Conversion_Timeout_CPU_cycles_max)
|
|
{
|
|
/* Check if timeout is disabled (set to infinite wait) */
|
|
if(Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
|
|
{
|
|
/* Update ADC state machine to timeout */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
Conversion_Timeout_CPU_cycles ++;
|
|
}
|
|
}
|
|
|
|
/* Clear regular group conversion flag */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_STRT | ADC_FLAG_EOC);
|
|
|
|
/* Update ADC state machine */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
|
|
|
|
/* Determine whether any further conversion upcoming on group regular */
|
|
/* by external trigger, continuous mode or scan sequence on going. */
|
|
/* Note: On STM32F1 devices, in case of sequencer enabled */
|
|
/* (several ranks selected), end of conversion flag is raised */
|
|
/* at the end of the sequence. */
|
|
if(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
|
|
(hadc->Init.ContinuousConvMode == DISABLE) )
|
|
{
|
|
/* Set ADC state */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
|
|
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
|
|
{
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
|
|
}
|
|
}
|
|
|
|
/* Return ADC state */
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Poll for conversion event.
|
|
* @param hadc: ADC handle
|
|
* @param EventType: the ADC event type.
|
|
* This parameter can be one of the following values:
|
|
* @arg ADC_AWD_EVENT: ADC Analog watchdog event.
|
|
* @param Timeout: Timeout value in millisecond.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_PollForEvent(ADC_HandleTypeDef* hadc, uint32_t EventType, uint32_t Timeout)
|
|
{
|
|
uint32_t tickstart = 0;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
assert_param(IS_ADC_EVENT_TYPE(EventType));
|
|
|
|
/* Get tick count */
|
|
tickstart = HAL_GetTick();
|
|
|
|
/* Check selected event flag */
|
|
while(__HAL_ADC_GET_FLAG(hadc, EventType) == RESET)
|
|
{
|
|
/* Check if timeout is disabled (set to infinite wait) */
|
|
if(Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if((Timeout == 0) || ((HAL_GetTick() - tickstart ) > Timeout))
|
|
{
|
|
/* Update ADC state machine to timeout */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Analog watchdog (level out of window) event */
|
|
/* Set ADC state */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
|
|
|
|
/* Clear ADC analog watchdog flag */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD);
|
|
|
|
/* Return ADC state */
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Enables ADC, starts conversion of regular group with interruption.
|
|
* Interruptions enabled in this function:
|
|
* - EOC (end of conversion of regular group)
|
|
* Each of these interruptions has its dedicated callback function.
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Enable the ADC peripheral */
|
|
tmp_hal_status = ADC_Enable(hadc);
|
|
|
|
/* Start conversion if ADC is effectively enabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Set ADC state */
|
|
/* - Clear state bitfield related to regular group conversion results */
|
|
/* - Set state bitfield related to regular operation */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
|
|
HAL_ADC_STATE_REG_BUSY);
|
|
|
|
/* Set group injected state (from auto-injection) and multimode state */
|
|
/* for all cases of multimode: independent mode, multimode ADC master */
|
|
/* or multimode ADC slave (for devices with several ADCs): */
|
|
if (ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc))
|
|
{
|
|
/* Set ADC state (ADC independent or master) */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
|
|
|
|
/* If conversions on group regular are also triggering group injected, */
|
|
/* update ADC state. */
|
|
if (READ_BIT(hadc->Instance->CR1, ADC_CR1_JAUTO) != RESET)
|
|
{
|
|
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Set ADC state (ADC slave) */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
|
|
|
|
/* If conversions on group regular are also triggering group injected, */
|
|
/* update ADC state. */
|
|
if (ADC_MULTIMODE_AUTO_INJECTED(hadc))
|
|
{
|
|
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
|
|
}
|
|
}
|
|
|
|
/* State machine update: Check if an injected conversion is ongoing */
|
|
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_INJ_BUSY))
|
|
{
|
|
/* Reset ADC error code fields related to conversions on group regular */
|
|
CLEAR_BIT(hadc->ErrorCode, (HAL_ADC_ERROR_OVR | HAL_ADC_ERROR_DMA));
|
|
}
|
|
else
|
|
{
|
|
/* Reset ADC all error code fields */
|
|
ADC_CLEAR_ERRORCODE(hadc);
|
|
}
|
|
|
|
/* Process unlocked */
|
|
/* Unlock before starting ADC conversions: in case of potential */
|
|
/* interruption, to let the process to ADC IRQ Handler. */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Clear regular group conversion flag and overrun flag */
|
|
/* (To ensure of no unknown state from potential previous ADC operations) */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOC);
|
|
|
|
/* Enable end of conversion interrupt for regular group */
|
|
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOC);
|
|
|
|
/* Enable conversion of regular group. */
|
|
/* If software start has been selected, conversion starts immediately. */
|
|
/* If external trigger has been selected, conversion will start at next */
|
|
/* trigger event. */
|
|
/* Case of multimode enabled: */
|
|
/* - if ADC is slave, ADC is enabled only (conversion is not started). */
|
|
/* - if ADC is master, ADC is enabled and conversion is started. */
|
|
if (ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
|
|
ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc) )
|
|
{
|
|
/* Start ADC conversion on regular group with SW start */
|
|
SET_BIT(hadc->Instance->CR2, (ADC_CR2_SWSTART | ADC_CR2_EXTTRIG));
|
|
}
|
|
else
|
|
{
|
|
/* Start ADC conversion on regular group with external trigger */
|
|
SET_BIT(hadc->Instance->CR2, ADC_CR2_EXTTRIG);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
}
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Stop ADC conversion of regular group (and injected group in
|
|
* case of auto_injection mode), disable interrution of
|
|
* end-of-conversion, disable ADC peripheral.
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_Stop_IT(ADC_HandleTypeDef* hadc)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Stop potential conversion on going, on regular and injected groups */
|
|
/* Disable ADC peripheral */
|
|
tmp_hal_status = ADC_ConversionStop_Disable(hadc);
|
|
|
|
/* Check if ADC is effectively disabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Disable ADC end of conversion interrupt for regular group */
|
|
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC);
|
|
|
|
/* Set ADC state */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_REG_BUSY | HAL_ADC_STATE_INJ_BUSY,
|
|
HAL_ADC_STATE_READY);
|
|
}
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Enables ADC, starts conversion of regular group and transfers result
|
|
* through DMA.
|
|
* Interruptions enabled in this function:
|
|
* - DMA transfer complete
|
|
* - DMA half transfer
|
|
* Each of these interruptions has its dedicated callback function.
|
|
* @note For devices with several ADCs: This function is for single-ADC mode
|
|
* only. For multimode, use the dedicated MultimodeStart function.
|
|
* @note On STM32F1 devices, only ADC1 and ADC3 (ADC availability depending
|
|
* on devices) have DMA capability.
|
|
* ADC2 converted data can be transferred in dual ADC mode using DMA
|
|
* of ADC1 (ADC master in multimode).
|
|
* In case of using ADC1 with DMA on a device featuring 2 ADC
|
|
* instances: ADC1 conversion register DR contains ADC1 conversion
|
|
* result (ADC1 register DR bits 0 to 11) and, additionally, ADC2 last
|
|
* conversion result (ADC1 register DR bits 16 to 27). Therefore, to
|
|
* have DMA transferring the conversion results of ADC1 only, DMA must
|
|
* be configured to transfer size: half word.
|
|
* @param hadc: ADC handle
|
|
* @param pData: The destination Buffer address.
|
|
* @param Length: The length of data to be transferred from ADC peripheral to memory.
|
|
* @retval None
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_Start_DMA(ADC_HandleTypeDef* hadc, uint32_t* pData, uint32_t Length)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_DMA_CAPABILITY_INSTANCE(hadc->Instance));
|
|
|
|
/* Verification if multimode is disabled (for devices with several ADC) */
|
|
/* If multimode is enabled, dedicated function multimode conversion */
|
|
/* start DMA must be used. */
|
|
if(ADC_MULTIMODE_IS_ENABLE(hadc) == RESET)
|
|
{
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Enable the ADC peripheral */
|
|
tmp_hal_status = ADC_Enable(hadc);
|
|
|
|
/* Start conversion if ADC is effectively enabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Set ADC state */
|
|
/* - Clear state bitfield related to regular group conversion results */
|
|
/* - Set state bitfield related to regular operation */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
|
|
HAL_ADC_STATE_REG_BUSY);
|
|
|
|
/* Set group injected state (from auto-injection) and multimode state */
|
|
/* for all cases of multimode: independent mode, multimode ADC master */
|
|
/* or multimode ADC slave (for devices with several ADCs): */
|
|
if (ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc))
|
|
{
|
|
/* Set ADC state (ADC independent or master) */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
|
|
|
|
/* If conversions on group regular are also triggering group injected, */
|
|
/* update ADC state. */
|
|
if (READ_BIT(hadc->Instance->CR1, ADC_CR1_JAUTO) != RESET)
|
|
{
|
|
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Set ADC state (ADC slave) */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
|
|
|
|
/* If conversions on group regular are also triggering group injected, */
|
|
/* update ADC state. */
|
|
if (ADC_MULTIMODE_AUTO_INJECTED(hadc))
|
|
{
|
|
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
|
|
}
|
|
}
|
|
|
|
/* State machine update: Check if an injected conversion is ongoing */
|
|
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_INJ_BUSY))
|
|
{
|
|
/* Reset ADC error code fields related to conversions on group regular */
|
|
CLEAR_BIT(hadc->ErrorCode, (HAL_ADC_ERROR_OVR | HAL_ADC_ERROR_DMA));
|
|
}
|
|
else
|
|
{
|
|
/* Reset ADC all error code fields */
|
|
ADC_CLEAR_ERRORCODE(hadc);
|
|
}
|
|
|
|
/* Process unlocked */
|
|
/* Unlock before starting ADC conversions: in case of potential */
|
|
/* interruption, to let the process to ADC IRQ Handler. */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Set the DMA transfer complete callback */
|
|
hadc->DMA_Handle->XferCpltCallback = ADC_DMAConvCplt;
|
|
|
|
/* Set the DMA half transfer complete callback */
|
|
hadc->DMA_Handle->XferHalfCpltCallback = ADC_DMAHalfConvCplt;
|
|
|
|
/* Set the DMA error callback */
|
|
hadc->DMA_Handle->XferErrorCallback = ADC_DMAError;
|
|
|
|
|
|
/* Manage ADC and DMA start: ADC overrun interruption, DMA start, ADC */
|
|
/* start (in case of SW start): */
|
|
|
|
/* Clear regular group conversion flag and overrun flag */
|
|
/* (To ensure of no unknown state from potential previous ADC */
|
|
/* operations) */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOC);
|
|
|
|
/* Enable ADC DMA mode */
|
|
SET_BIT(hadc->Instance->CR2, ADC_CR2_DMA);
|
|
|
|
/* Start the DMA channel */
|
|
HAL_DMA_Start_IT(hadc->DMA_Handle, (uint32_t)&hadc->Instance->DR, (uint32_t)pData, Length);
|
|
|
|
/* Enable conversion of regular group. */
|
|
/* If software start has been selected, conversion starts immediately. */
|
|
/* If external trigger has been selected, conversion will start at next */
|
|
/* trigger event. */
|
|
if (ADC_IS_SOFTWARE_START_REGULAR(hadc))
|
|
{
|
|
/* Start ADC conversion on regular group with SW start */
|
|
SET_BIT(hadc->Instance->CR2, (ADC_CR2_SWSTART | ADC_CR2_EXTTRIG));
|
|
}
|
|
else
|
|
{
|
|
/* Start ADC conversion on regular group with external trigger */
|
|
SET_BIT(hadc->Instance->CR2, ADC_CR2_EXTTRIG);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
tmp_hal_status = HAL_ERROR;
|
|
}
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Stop ADC conversion of regular group (and injected group in
|
|
* case of auto_injection mode), disable ADC DMA transfer, disable
|
|
* ADC peripheral.
|
|
* @note: ADC peripheral disable is forcing stop of potential
|
|
* conversion on injected group. If injected group is under use, it
|
|
* should be preliminarily stopped using HAL_ADCEx_InjectedStop function.
|
|
* @note For devices with several ADCs: This function is for single-ADC mode
|
|
* only. For multimode, use the dedicated MultimodeStop function.
|
|
* @note On STM32F1 devices, only ADC1 and ADC3 (ADC availability depending
|
|
* on devices) have DMA capability.
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status.
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_Stop_DMA(ADC_HandleTypeDef* hadc)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_DMA_CAPABILITY_INSTANCE(hadc->Instance));
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Stop potential conversion on going, on regular and injected groups */
|
|
/* Disable ADC peripheral */
|
|
tmp_hal_status = ADC_ConversionStop_Disable(hadc);
|
|
|
|
/* Check if ADC is effectively disabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Disable ADC DMA mode */
|
|
CLEAR_BIT(hadc->Instance->CR2, ADC_CR2_DMA);
|
|
|
|
/* Disable the DMA channel (in case of DMA in circular mode or stop while */
|
|
/* DMA transfer is on going) */
|
|
tmp_hal_status = HAL_DMA_Abort(hadc->DMA_Handle);
|
|
|
|
/* Check if DMA channel effectively disabled */
|
|
if (tmp_hal_status == HAL_OK)
|
|
{
|
|
/* Set ADC state */
|
|
ADC_STATE_CLR_SET(hadc->State,
|
|
HAL_ADC_STATE_REG_BUSY | HAL_ADC_STATE_INJ_BUSY,
|
|
HAL_ADC_STATE_READY);
|
|
}
|
|
else
|
|
{
|
|
/* Update ADC state machine to error */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_DMA);
|
|
}
|
|
}
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Get ADC regular group conversion result.
|
|
* @note Reading register DR automatically clears ADC flag EOC
|
|
* (ADC group regular end of unitary conversion).
|
|
* @note This function does not clear ADC flag EOS
|
|
* (ADC group regular end of sequence conversion).
|
|
* Occurrence of flag EOS rising:
|
|
* - If sequencer is composed of 1 rank, flag EOS is equivalent
|
|
* to flag EOC.
|
|
* - If sequencer is composed of several ranks, during the scan
|
|
* sequence flag EOC only is raised, at the end of the scan sequence
|
|
* both flags EOC and EOS are raised.
|
|
* To clear this flag, either use function:
|
|
* in programming model IT: @ref HAL_ADC_IRQHandler(), in programming
|
|
* model polling: @ref HAL_ADC_PollForConversion()
|
|
* or @ref __HAL_ADC_CLEAR_FLAG(&hadc, ADC_FLAG_EOS).
|
|
* @param hadc: ADC handle
|
|
* @retval ADC group regular conversion data
|
|
*/
|
|
uint32_t HAL_ADC_GetValue(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
|
|
/* Note: EOC flag is not cleared here by software because automatically */
|
|
/* cleared by hardware when reading register DR. */
|
|
|
|
/* Return ADC converted value */
|
|
return hadc->Instance->DR;
|
|
}
|
|
|
|
/**
|
|
* @brief Handles ADC interrupt request
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode));
|
|
assert_param(IS_ADC_REGULAR_NB_CONV(hadc->Init.NbrOfConversion));
|
|
|
|
|
|
/* ========== Check End of Conversion flag for regular group ========== */
|
|
if(__HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_EOC))
|
|
{
|
|
if(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC) )
|
|
{
|
|
/* Update state machine on conversion status if not in error state */
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL))
|
|
{
|
|
/* Set ADC state */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
|
|
}
|
|
|
|
/* Determine whether any further conversion upcoming on group regular */
|
|
/* by external trigger, continuous mode or scan sequence on going. */
|
|
/* Note: On STM32F1 devices, in case of sequencer enabled */
|
|
/* (several ranks selected), end of conversion flag is raised */
|
|
/* at the end of the sequence. */
|
|
if(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
|
|
(hadc->Init.ContinuousConvMode == DISABLE) )
|
|
{
|
|
/* Disable ADC end of conversion interrupt on group regular */
|
|
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC);
|
|
|
|
/* Set ADC state */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
|
|
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
|
|
{
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
|
|
}
|
|
}
|
|
|
|
/* Conversion complete callback */
|
|
HAL_ADC_ConvCpltCallback(hadc);
|
|
|
|
/* Clear regular group conversion flag */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_STRT | ADC_FLAG_EOC);
|
|
}
|
|
}
|
|
|
|
/* ========== Check End of Conversion flag for injected group ========== */
|
|
if(__HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_JEOC))
|
|
{
|
|
if(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_JEOC))
|
|
{
|
|
/* Update state machine on conversion status if not in error state */
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL))
|
|
{
|
|
/* Set ADC state */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_INJ_EOC);
|
|
}
|
|
|
|
/* Determine whether any further conversion upcoming on group injected */
|
|
/* by external trigger, scan sequence on going or by automatic injected */
|
|
/* conversion from group regular (same conditions as group regular */
|
|
/* interruption disabling above). */
|
|
/* Note: On STM32F1 devices, in case of sequencer enabled */
|
|
/* (several ranks selected), end of conversion flag is raised */
|
|
/* at the end of the sequence. */
|
|
if(ADC_IS_SOFTWARE_START_INJECTED(hadc) ||
|
|
(HAL_IS_BIT_CLR(hadc->Instance->CR1, ADC_CR1_JAUTO) &&
|
|
(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
|
|
(hadc->Init.ContinuousConvMode == DISABLE) ) ) )
|
|
{
|
|
/* Disable ADC end of conversion interrupt on group injected */
|
|
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOC);
|
|
|
|
/* Set ADC state */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_INJ_BUSY);
|
|
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_REG_BUSY))
|
|
{
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
|
|
}
|
|
}
|
|
|
|
/* Conversion complete callback */
|
|
HAL_ADCEx_InjectedConvCpltCallback(hadc);
|
|
|
|
/* Clear injected group conversion flag */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_JSTRT | ADC_FLAG_JEOC));
|
|
}
|
|
}
|
|
|
|
/* ========== Check Analog watchdog flags ========== */
|
|
if(__HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_AWD))
|
|
{
|
|
if(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_AWD))
|
|
{
|
|
/* Set ADC state */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
|
|
|
|
/* Level out of window callback */
|
|
HAL_ADC_LevelOutOfWindowCallback(hadc);
|
|
|
|
/* Clear the ADC analog watchdog flag */
|
|
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Conversion complete callback in non blocking mode
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(hadc);
|
|
/* NOTE : This function should not be modified. When the callback is needed,
|
|
function HAL_ADC_ConvCpltCallback must be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Conversion DMA half-transfer callback in non blocking mode
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(hadc);
|
|
/* NOTE : This function should not be modified. When the callback is needed,
|
|
function HAL_ADC_ConvHalfCpltCallback must be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Analog watchdog callback in non blocking mode.
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(hadc);
|
|
/* NOTE : This function should not be modified. When the callback is needed,
|
|
function HAL_ADC_LevelOutOfWindowCallback must be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief ADC error callback in non blocking mode
|
|
* (ADC conversion with interruption or transfer by DMA)
|
|
* @param hadc: ADC handle
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(hadc);
|
|
/* NOTE : This function should not be modified. When the callback is needed,
|
|
function HAL_ADC_ErrorCallback must be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup ADC_Exported_Functions_Group3 Peripheral Control functions
|
|
* @brief Peripheral Control functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### Peripheral Control functions #####
|
|
===============================================================================
|
|
[..] This section provides functions allowing to:
|
|
(+) Configure channels on regular group
|
|
(+) Configure the analog watchdog
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Configures the the selected channel to be linked to the regular
|
|
* group.
|
|
* @note In case of usage of internal measurement channels:
|
|
* Vbat/VrefInt/TempSensor.
|
|
* These internal paths can be be disabled using function
|
|
* HAL_ADC_DeInit().
|
|
* @note Possibility to update parameters on the fly:
|
|
* This function initializes channel into regular group, following
|
|
* calls to this function can be used to reconfigure some parameters
|
|
* of structure "ADC_ChannelConfTypeDef" on the fly, without reseting
|
|
* the ADC.
|
|
* The setting of these parameters is conditioned to ADC state.
|
|
* For parameters constraints, see comments of structure
|
|
* "ADC_ChannelConfTypeDef".
|
|
* @param hadc: ADC handle
|
|
* @param sConfig: Structure of ADC channel for regular group.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig)
|
|
{
|
|
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
|
|
__IO uint32_t wait_loop_index = 0;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
assert_param(IS_ADC_CHANNEL(sConfig->Channel));
|
|
assert_param(IS_ADC_REGULAR_RANK(sConfig->Rank));
|
|
assert_param(IS_ADC_SAMPLE_TIME(sConfig->SamplingTime));
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
|
|
/* Regular sequence configuration */
|
|
/* For Rank 1 to 6 */
|
|
if (sConfig->Rank < 7)
|
|
{
|
|
MODIFY_REG(hadc->Instance->SQR3 ,
|
|
ADC_SQR3_RK(ADC_SQR3_SQ1, sConfig->Rank) ,
|
|
ADC_SQR3_RK(sConfig->Channel, sConfig->Rank) );
|
|
}
|
|
/* For Rank 7 to 12 */
|
|
else if (sConfig->Rank < 13)
|
|
{
|
|
MODIFY_REG(hadc->Instance->SQR2 ,
|
|
ADC_SQR2_RK(ADC_SQR2_SQ7, sConfig->Rank) ,
|
|
ADC_SQR2_RK(sConfig->Channel, sConfig->Rank) );
|
|
}
|
|
/* For Rank 13 to 16 */
|
|
else
|
|
{
|
|
MODIFY_REG(hadc->Instance->SQR1 ,
|
|
ADC_SQR1_RK(ADC_SQR1_SQ13, sConfig->Rank) ,
|
|
ADC_SQR1_RK(sConfig->Channel, sConfig->Rank) );
|
|
}
|
|
|
|
|
|
/* Channel sampling time configuration */
|
|
/* For channels 10 to 17 */
|
|
if (sConfig->Channel >= ADC_CHANNEL_10)
|
|
{
|
|
MODIFY_REG(hadc->Instance->SMPR1 ,
|
|
ADC_SMPR1(ADC_SMPR1_SMP10, sConfig->Channel) ,
|
|
ADC_SMPR1(sConfig->SamplingTime, sConfig->Channel) );
|
|
}
|
|
else /* For channels 0 to 9 */
|
|
{
|
|
MODIFY_REG(hadc->Instance->SMPR2 ,
|
|
ADC_SMPR2(ADC_SMPR2_SMP0, sConfig->Channel) ,
|
|
ADC_SMPR2(sConfig->SamplingTime, sConfig->Channel) );
|
|
}
|
|
|
|
/* If ADC1 Channel_16 or Channel_17 is selected, enable Temperature sensor */
|
|
/* and VREFINT measurement path. */
|
|
if ((sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) ||
|
|
(sConfig->Channel == ADC_CHANNEL_VREFINT) )
|
|
{
|
|
/* For STM32F1 devices with several ADC: Only ADC1 can access internal */
|
|
/* measurement channels (VrefInt/TempSensor). If these channels are */
|
|
/* intended to be set on other ADC instances, an error is reported. */
|
|
if (hadc->Instance == ADC1)
|
|
{
|
|
if (READ_BIT(hadc->Instance->CR2, ADC_CR2_TSVREFE) == RESET)
|
|
{
|
|
SET_BIT(hadc->Instance->CR2, ADC_CR2_TSVREFE);
|
|
|
|
if ((sConfig->Channel == ADC_CHANNEL_TEMPSENSOR))
|
|
{
|
|
/* Delay for temperature sensor stabilization time */
|
|
/* Compute number of CPU cycles to wait for */
|
|
wait_loop_index = (ADC_TEMPSENSOR_DELAY_US * (SystemCoreClock / 1000000));
|
|
while(wait_loop_index != 0)
|
|
{
|
|
wait_loop_index--;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Update ADC state machine to error */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
|
|
|
|
tmp_hal_status = HAL_ERROR;
|
|
}
|
|
}
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Return function status */
|
|
return tmp_hal_status;
|
|
}
|
|
|
|
/**
|
|
* @brief Configures the analog watchdog.
|
|
* @note Analog watchdog thresholds can be modified while ADC conversion
|
|
* is on going.
|
|
* In this case, some constraints must be taken into account:
|
|
* the programmed threshold values are effective from the next
|
|
* ADC EOC (end of unitary conversion).
|
|
* Considering that registers write delay may happen due to
|
|
* bus activity, this might cause an uncertainty on the
|
|
* effective timing of the new programmed threshold values.
|
|
* @param hadc: ADC handle
|
|
* @param AnalogWDGConfig: Structure of ADC analog watchdog configuration
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
|
|
assert_param(IS_ADC_ANALOG_WATCHDOG_MODE(AnalogWDGConfig->WatchdogMode));
|
|
assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode));
|
|
assert_param(IS_ADC_RANGE(AnalogWDGConfig->HighThreshold));
|
|
assert_param(IS_ADC_RANGE(AnalogWDGConfig->LowThreshold));
|
|
|
|
if((AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REG) ||
|
|
(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_INJEC) ||
|
|
(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REGINJEC) )
|
|
{
|
|
assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->Channel));
|
|
}
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(hadc);
|
|
|
|
/* Analog watchdog configuration */
|
|
|
|
/* Configure ADC Analog watchdog interrupt */
|
|
if(AnalogWDGConfig->ITMode == ENABLE)
|
|
{
|
|
/* Enable the ADC Analog watchdog interrupt */
|
|
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_AWD);
|
|
}
|
|
else
|
|
{
|
|
/* Disable the ADC Analog watchdog interrupt */
|
|
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_AWD);
|
|
}
|
|
|
|
/* Configuration of analog watchdog: */
|
|
/* - Set the analog watchdog enable mode: regular and/or injected groups, */
|
|
/* one or all channels. */
|
|
/* - Set the Analog watchdog channel (is not used if watchdog */
|
|
/* mode "all channels": ADC_CFGR_AWD1SGL=0). */
|
|
MODIFY_REG(hadc->Instance->CR1 ,
|
|
ADC_CR1_AWDSGL |
|
|
ADC_CR1_JAWDEN |
|
|
ADC_CR1_AWDEN |
|
|
ADC_CR1_AWDCH ,
|
|
AnalogWDGConfig->WatchdogMode |
|
|
AnalogWDGConfig->Channel );
|
|
|
|
/* Set the high threshold */
|
|
WRITE_REG(hadc->Instance->HTR, AnalogWDGConfig->HighThreshold);
|
|
|
|
/* Set the low threshold */
|
|
WRITE_REG(hadc->Instance->LTR, AnalogWDGConfig->LowThreshold);
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
/* Return function status */
|
|
return HAL_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/** @defgroup ADC_Exported_Functions_Group4 Peripheral State functions
|
|
* @brief Peripheral State functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### Peripheral State and Errors functions #####
|
|
===============================================================================
|
|
[..]
|
|
This subsection provides functions to get in run-time the status of the
|
|
peripheral.
|
|
(+) Check the ADC state
|
|
(+) Check the ADC error code
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief return the ADC state
|
|
* @param hadc: ADC handle
|
|
* @retval HAL state
|
|
*/
|
|
uint32_t HAL_ADC_GetState(ADC_HandleTypeDef* hadc)
|
|
{
|
|
/* Return ADC state */
|
|
return hadc->State;
|
|
}
|
|
|
|
/**
|
|
* @brief Return the ADC error code
|
|
* @param hadc: ADC handle
|
|
* @retval ADC Error Code
|
|
*/
|
|
uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc)
|
|
{
|
|
return hadc->ErrorCode;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup ADC_Private_Functions ADC Private Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Enable the selected ADC.
|
|
* @note Prerequisite condition to use this function: ADC must be disabled
|
|
* and voltage regulator must be enabled (done into HAL_ADC_Init()).
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status.
|
|
*/
|
|
HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc)
|
|
{
|
|
uint32_t tickstart = 0;
|
|
__IO uint32_t wait_loop_index = 0;
|
|
|
|
/* ADC enable and wait for ADC ready (in case of ADC is disabled or */
|
|
/* enabling phase not yet completed: flag ADC ready not yet set). */
|
|
/* Timeout implemented to not be stuck if ADC cannot be enabled (possible */
|
|
/* causes: ADC clock not running, ...). */
|
|
if (ADC_IS_ENABLE(hadc) == RESET)
|
|
{
|
|
/* Enable the Peripheral */
|
|
__HAL_ADC_ENABLE(hadc);
|
|
|
|
/* Delay for ADC stabilization time */
|
|
/* Compute number of CPU cycles to wait for */
|
|
wait_loop_index = (ADC_STAB_DELAY_US * (SystemCoreClock / 1000000));
|
|
while(wait_loop_index != 0)
|
|
{
|
|
wait_loop_index--;
|
|
}
|
|
|
|
/* Get tick count */
|
|
tickstart = HAL_GetTick();
|
|
|
|
/* Wait for ADC effectively enabled */
|
|
while(ADC_IS_ENABLE(hadc) == RESET)
|
|
{
|
|
if((HAL_GetTick() - tickstart) > ADC_ENABLE_TIMEOUT)
|
|
{
|
|
/* Update ADC state machine to error */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
|
|
|
|
/* Set ADC error code to ADC IP internal error */
|
|
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
|
|
|
|
/* Process unlocked */
|
|
__HAL_UNLOCK(hadc);
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Return HAL status */
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Stop ADC conversion and disable the selected ADC
|
|
* @note Prerequisite condition to use this function: ADC conversions must be
|
|
* stopped to disable the ADC.
|
|
* @param hadc: ADC handle
|
|
* @retval HAL status.
|
|
*/
|
|
HAL_StatusTypeDef ADC_ConversionStop_Disable(ADC_HandleTypeDef* hadc)
|
|
{
|
|
uint32_t tickstart = 0;
|
|
|
|
/* Verification if ADC is not already disabled */
|
|
if (ADC_IS_ENABLE(hadc) != RESET)
|
|
{
|
|
/* Disable the ADC peripheral */
|
|
__HAL_ADC_DISABLE(hadc);
|
|
|
|
/* Get tick count */
|
|
tickstart = HAL_GetTick();
|
|
|
|
/* Wait for ADC effectively disabled */
|
|
while(ADC_IS_ENABLE(hadc) != RESET)
|
|
{
|
|
if((HAL_GetTick() - tickstart) > ADC_DISABLE_TIMEOUT)
|
|
{
|
|
/* Update ADC state machine to error */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
|
|
|
|
/* Set ADC error code to ADC IP internal error */
|
|
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Return HAL status */
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief DMA transfer complete callback.
|
|
* @param hdma: pointer to DMA handle.
|
|
* @retval None
|
|
*/
|
|
void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
/* Retrieve ADC handle corresponding to current DMA handle */
|
|
ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
|
|
|
/* Update state machine on conversion status if not in error state */
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL | HAL_ADC_STATE_ERROR_DMA))
|
|
{
|
|
/* Update ADC state machine */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
|
|
|
|
/* Determine whether any further conversion upcoming on group regular */
|
|
/* by external trigger, continuous mode or scan sequence on going. */
|
|
/* Note: On STM32F1 devices, in case of sequencer enabled */
|
|
/* (several ranks selected), end of conversion flag is raised */
|
|
/* at the end of the sequence. */
|
|
if(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
|
|
(hadc->Init.ContinuousConvMode == DISABLE) )
|
|
{
|
|
/* Set ADC state */
|
|
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
|
|
|
|
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
|
|
{
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
|
|
}
|
|
}
|
|
|
|
/* Conversion complete callback */
|
|
HAL_ADC_ConvCpltCallback(hadc);
|
|
}
|
|
else
|
|
{
|
|
/* Call DMA error callback */
|
|
hadc->DMA_Handle->XferErrorCallback(hdma);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief DMA half transfer complete callback.
|
|
* @param hdma: pointer to DMA handle.
|
|
* @retval None
|
|
*/
|
|
void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
/* Retrieve ADC handle corresponding to current DMA handle */
|
|
ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
|
|
|
/* Half conversion callback */
|
|
HAL_ADC_ConvHalfCpltCallback(hadc);
|
|
}
|
|
|
|
/**
|
|
* @brief DMA error callback
|
|
* @param hdma: pointer to DMA handle.
|
|
* @retval None
|
|
*/
|
|
void ADC_DMAError(DMA_HandleTypeDef *hdma)
|
|
{
|
|
/* Retrieve ADC handle corresponding to current DMA handle */
|
|
ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
|
|
|
/* Set ADC state */
|
|
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_DMA);
|
|
|
|
/* Set ADC error code to DMA error */
|
|
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_DMA);
|
|
|
|
/* Error callback */
|
|
HAL_ADC_ErrorCallback(hadc);
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* HAL_ADC_MODULE_ENABLED */
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
|
|