You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
249 lines
8.0 KiB
249 lines
8.0 KiB
/**
|
|
******************************************************************************
|
|
* @file stm8s_gpio.c
|
|
* @author MCD Application Team
|
|
* @version V2.2.0
|
|
* @date 30-September-2014
|
|
* @brief This file contains all the functions for the GPIO peripheral.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
|
|
*
|
|
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
|
|
* You may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.st.com/software_license_agreement_liberty_v2
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "stm8s_gpio.h"
|
|
|
|
/** @addtogroup STM8S_StdPeriph_Driver
|
|
* @{
|
|
*/
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/* Public functions ----------------------------------------------------------*/
|
|
|
|
/**
|
|
* @addtogroup GPIO_Public_Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Deinitializes the GPIOx peripheral registers to their default reset values.
|
|
* @param GPIOx: Select the GPIO peripheral number (x = A to I).
|
|
* @retval None
|
|
*/
|
|
void GPIO_DeInit(GPIO_TypeDef* GPIOx)
|
|
{
|
|
GPIOx->ODR = GPIO_ODR_RESET_VALUE; /* Reset Output Data Register */
|
|
GPIOx->DDR = GPIO_DDR_RESET_VALUE; /* Reset Data Direction Register */
|
|
GPIOx->CR1 = GPIO_CR1_RESET_VALUE; /* Reset Control Register 1 */
|
|
GPIOx->CR2 = GPIO_CR2_RESET_VALUE; /* Reset Control Register 2 */
|
|
}
|
|
|
|
/**
|
|
* @brief Initializes the GPIOx according to the specified parameters.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param GPIO_Pin : This parameter contains the pin number, it can be any value
|
|
* of the @ref GPIO_Pin_TypeDef enumeration.
|
|
* @param GPIO_Mode : This parameter can be a value of the
|
|
* @Ref GPIO_Mode_TypeDef enumeration.
|
|
* @retval None
|
|
*/
|
|
|
|
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef GPIO_Pin, GPIO_Mode_TypeDef GPIO_Mode)
|
|
{
|
|
/*----------------------*/
|
|
/* Check the parameters */
|
|
/*----------------------*/
|
|
|
|
assert_param(IS_GPIO_MODE_OK(GPIO_Mode));
|
|
assert_param(IS_GPIO_PIN_OK(GPIO_Pin));
|
|
|
|
/* Reset corresponding bit to GPIO_Pin in CR2 register */
|
|
GPIOx->CR2 &= (uint8_t)(~(GPIO_Pin));
|
|
|
|
/*-----------------------------*/
|
|
/* Input/Output mode selection */
|
|
/*-----------------------------*/
|
|
|
|
if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x80) != (uint8_t)0x00) /* Output mode */
|
|
{
|
|
if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x10) != (uint8_t)0x00) /* High level */
|
|
{
|
|
GPIOx->ODR |= (uint8_t)GPIO_Pin;
|
|
}
|
|
else /* Low level */
|
|
{
|
|
GPIOx->ODR &= (uint8_t)(~(GPIO_Pin));
|
|
}
|
|
/* Set Output mode */
|
|
GPIOx->DDR |= (uint8_t)GPIO_Pin;
|
|
}
|
|
else /* Input mode */
|
|
{
|
|
/* Set Input mode */
|
|
GPIOx->DDR &= (uint8_t)(~(GPIO_Pin));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
/* Pull-Up/Float (Input) or Push-Pull/Open-Drain (Output) modes selection */
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x40) != (uint8_t)0x00) /* Pull-Up or Push-Pull */
|
|
{
|
|
GPIOx->CR1 |= (uint8_t)GPIO_Pin;
|
|
}
|
|
else /* Float or Open-Drain */
|
|
{
|
|
GPIOx->CR1 &= (uint8_t)(~(GPIO_Pin));
|
|
}
|
|
|
|
/*-----------------------------------------------------*/
|
|
/* Interrupt (Input) or Slope (Output) modes selection */
|
|
/*-----------------------------------------------------*/
|
|
|
|
if ((((uint8_t)(GPIO_Mode)) & (uint8_t)0x20) != (uint8_t)0x00) /* Interrupt or Slow slope */
|
|
{
|
|
GPIOx->CR2 |= (uint8_t)GPIO_Pin;
|
|
}
|
|
else /* No external interrupt or No slope control */
|
|
{
|
|
GPIOx->CR2 &= (uint8_t)(~(GPIO_Pin));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Writes data to the specified GPIO data port.
|
|
* @note The port must be configured in output mode.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param GPIO_PortVal : Specifies the value to be written to the port output
|
|
* data register.
|
|
* @retval None
|
|
*/
|
|
void GPIO_Write(GPIO_TypeDef* GPIOx, uint8_t PortVal)
|
|
{
|
|
GPIOx->ODR = PortVal;
|
|
}
|
|
|
|
/**
|
|
* @brief Writes high level to the specified GPIO pins.
|
|
* @note The port must be configured in output mode.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param PortPins : Specifies the pins to be turned high to the port output.
|
|
* data register.
|
|
* @retval None
|
|
*/
|
|
void GPIO_WriteHigh(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef PortPins)
|
|
{
|
|
GPIOx->ODR |= (uint8_t)PortPins;
|
|
}
|
|
|
|
/**
|
|
* @brief Writes low level to the specified GPIO pins.
|
|
* @note The port must be configured in output mode.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param PortPins : Specifies the pins to be turned low to the port output.
|
|
* data register.
|
|
* @retval None
|
|
*/
|
|
void GPIO_WriteLow(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef PortPins)
|
|
{
|
|
GPIOx->ODR &= (uint8_t)(~PortPins);
|
|
}
|
|
|
|
/**
|
|
* @brief Writes reverse level to the specified GPIO pins.
|
|
* @note The port must be configured in output mode.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param PortPins : Specifies the pins to be reversed to the port output.
|
|
* data register.
|
|
* @retval None
|
|
*/
|
|
void GPIO_WriteReverse(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef PortPins)
|
|
{
|
|
GPIOx->ODR ^= (uint8_t)PortPins;
|
|
}
|
|
|
|
/**
|
|
* @brief Reads the specified GPIO output data port.
|
|
* @note The port must be configured in input mode.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @retval GPIO output data port value.
|
|
*/
|
|
uint8_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
|
|
{
|
|
return ((uint8_t)GPIOx->ODR);
|
|
}
|
|
|
|
/**
|
|
* @brief Reads the specified GPIO input data port.
|
|
* @note The port must be configured in input mode.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @retval GPIO input data port value.
|
|
*/
|
|
uint8_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
|
|
{
|
|
return ((uint8_t)GPIOx->IDR);
|
|
}
|
|
|
|
/**
|
|
* @brief Reads the specified GPIO input data pin.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param GPIO_Pin : Specifies the pin number.
|
|
* @retval BitStatus : GPIO input pin status.
|
|
*/
|
|
BitStatus GPIO_ReadInputPin(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef GPIO_Pin)
|
|
{
|
|
return ((BitStatus)(GPIOx->IDR & (uint8_t)GPIO_Pin));
|
|
}
|
|
|
|
/**
|
|
* @brief Configures the external pull-up on GPIOx pins.
|
|
* @param GPIOx : Select the GPIO peripheral number (x = A to I).
|
|
* @param GPIO_Pin : Specifies the pin number
|
|
* @param NewState : The new state of the pull up pin.
|
|
* @retval None
|
|
*/
|
|
void GPIO_ExternalPullUpConfig(GPIO_TypeDef* GPIOx, GPIO_Pin_TypeDef GPIO_Pin, FunctionalState NewState)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_GPIO_PIN_OK(GPIO_Pin));
|
|
assert_param(IS_FUNCTIONALSTATE_OK(NewState));
|
|
|
|
if (NewState != DISABLE) /* External Pull-Up Set*/
|
|
{
|
|
GPIOx->CR1 |= (uint8_t)GPIO_Pin;
|
|
} else /* External Pull-Up Reset*/
|
|
{
|
|
GPIOx->CR1 &= (uint8_t)(~(GPIO_Pin));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
|
|