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.
169 lines
4.9 KiB
169 lines
4.9 KiB
/**
|
|
******************************************************************************
|
|
* File Name : I2C.c
|
|
* Description : This file provides code for the configuration
|
|
* of the I2C instances.
|
|
******************************************************************************
|
|
** This notice applies to any and all portions of this file
|
|
* that are not between comment pairs USER CODE BEGIN and
|
|
* USER CODE END. Other portions of this file, whether
|
|
* inserted by the user or by software development tools
|
|
* are owned by their respective copyright owners.
|
|
*
|
|
* COPYRIGHT(c) 2017 STMicroelectronics
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "hw.h"
|
|
#include "hw_i2c.h"
|
|
#include "debug.h"
|
|
|
|
static inline uint32_t setupTiming(void)
|
|
{
|
|
const uint32_t presc = 15;
|
|
|
|
// delays
|
|
const uint32_t sdadel = 2;
|
|
const uint32_t scldel = 2;
|
|
|
|
const uint32_t scll = 6;
|
|
const uint32_t sclh = 7;
|
|
|
|
return presc << I2C_TIMINGR_PRESC_Pos |
|
|
scldel << I2C_TIMINGR_SCLDEL_Pos |
|
|
sdadel << I2C_TIMINGR_SDADEL_Pos |
|
|
sclh << I2C_TIMINGR_SCLH_Pos |
|
|
scll << I2C_TIMINGR_SCLL_Pos;
|
|
}
|
|
|
|
I2C_HandleTypeDef hi2c1;
|
|
|
|
/* I2C1 init function */
|
|
void HW_I2C_Init(void)
|
|
{
|
|
hi2c1.Instance = I2C1;
|
|
hi2c1.Init.Timing = setupTiming(); //0x00000708;
|
|
hi2c1.Init.OwnAddress1 = 0;
|
|
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
|
|
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
|
|
hi2c1.Init.OwnAddress2 = 0;
|
|
hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
|
|
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
|
|
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
|
|
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
|
|
{
|
|
_Error_Handler(__FILE__, __LINE__);
|
|
}
|
|
|
|
/**Configure Analogue filter
|
|
*/
|
|
if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
|
|
{
|
|
_Error_Handler(__FILE__, __LINE__);
|
|
}
|
|
|
|
/**Configure Digital filter
|
|
*/
|
|
if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
|
|
{
|
|
_Error_Handler(__FILE__, __LINE__);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/* I2C1 init function */
|
|
void HW_I2C_DeInit(void)
|
|
{
|
|
HAL_I2C_DeInit(&hi2c1);
|
|
}
|
|
|
|
void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
|
|
{
|
|
|
|
GPIO_InitTypeDef GPIO_InitStruct;
|
|
if(i2cHandle->Instance==I2C1)
|
|
{
|
|
/* USER CODE BEGIN I2C1_MspInit 0 */
|
|
|
|
/* USER CODE END I2C1_MspInit 0 */
|
|
|
|
/**I2C1 GPIO Configuration
|
|
PB8 ------> I2C1_SCL
|
|
PB9 ------> I2C1_SDA
|
|
*/
|
|
GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
|
|
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
|
|
GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
|
|
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
|
|
|
|
/* I2C1 clock enable */
|
|
__HAL_RCC_I2C1_CLK_ENABLE();
|
|
/* USER CODE BEGIN I2C1_MspInit 1 */
|
|
|
|
/* USER CODE END I2C1_MspInit 1 */
|
|
}
|
|
}
|
|
|
|
void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
|
|
{
|
|
|
|
if(i2cHandle->Instance==I2C1)
|
|
{
|
|
/* USER CODE BEGIN I2C1_MspDeInit 0 */
|
|
|
|
/* USER CODE END I2C1_MspDeInit 0 */
|
|
/* Peripheral clock disable */
|
|
__HAL_RCC_I2C1_CLK_DISABLE();
|
|
|
|
/**I2C1 GPIO Configuration
|
|
PB8 ------> I2C1_SCL
|
|
PB9 ------> I2C1_SDA
|
|
*/
|
|
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8|GPIO_PIN_9);
|
|
|
|
/* USER CODE BEGIN I2C1_MspDeInit 1 */
|
|
|
|
/* USER CODE END I2C1_MspDeInit 1 */
|
|
}
|
|
}
|
|
|
|
/* USER CODE BEGIN 1 */
|
|
|
|
/* USER CODE END 1 */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
|
|