218 lines
7.0 KiB
C
218 lines
7.0 KiB
C
/**
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******************************************************************************
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* @file i2c.c
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* @author AMG Energy Solution Team
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* @version V1.0.0
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* @date 07-Feb-2022
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* @brief This file provides all the codes of i2c functions.
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******************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*
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* <h2><center>© COPYRIGHT 2022 AMG</center></h2>
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******************************************************************************
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*/
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/** @addtogroup mBMS2
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* @{
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "i2c.h"
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#include "delay.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Define I2C unit used for the example */
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#define I2C_UNIT (M4_I2C1)
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/* Define BQ Series device address */
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#define BQ_ADDRESS (0x50u)
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#define BQ_ADR_LEN (1u)
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/* Define port and pin for SDA and SCL */
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#define I2C_SCL_PORT (PortD)
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#define I2C_SCL_PIN (Pin01)
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#define I2C_SDA_PORT (PortD)
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#define I2C_SDA_PIN (Pin00)
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#define I2C_GPIO_SCL_FUNC (Func_I2c1_Scl)
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#define I2C_GPIO_SDA_FUNC (Func_I2c1_Sda)
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#define I2C_FCG_USE (PWC_FCG1_PERIPH_I2C1)
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#define TIMEOUT (0x40000ul)
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/**
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******************************************************************************
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** \brief I2C memory write
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**
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** \param u8DevAddr The slave address
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** \param u8Addr The register address
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** \param pu8Data Pointer to the data buffer
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** \param u32Size Data size
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** \param u32TimeOut Time out count
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** \retval en_result_t Enumeration value:
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** - Ok: Success
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** - Error: Receive NACK
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** - ErrorTimeout: Time out
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******************************************************************************/
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en_result_t I2C_Reg_Write(uint16_t u8DevAddr, uint8_t u8RegAddr, uint8_t *pu8Data, uint32_t u32Size, uint32_t u32TimeOut)
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{
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en_result_t enRet;
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I2C_Cmd(I2C_UNIT, Enable);
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I2C_SoftwareResetCmd(I2C_UNIT, Enable);
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I2C_SoftwareResetCmd(I2C_UNIT, Disable);
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enRet = I2C_Start(I2C_UNIT, u32TimeOut);
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if (Ok == enRet)
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{
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enRet = I2C_TransAddr(I2C_UNIT, u8DevAddr, I2CDirTrans, u32TimeOut);
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if (Ok == enRet)
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{
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enRet = I2C_TransData(I2C_UNIT, (uint8_t *)&u8RegAddr, BQ_ADR_LEN, u32TimeOut);
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if (Ok == enRet)
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{
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enRet = I2C_TransData(I2C_UNIT, pu8Data, u32Size, u32TimeOut);
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}
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}
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}
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I2C_Stop(I2C_UNIT, u32TimeOut);
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I2C_Cmd(I2C_UNIT, Disable);
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return enRet;
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}
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/**
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******************************************************************************
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** \brief I2C memory read
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**
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** \param u8DevAddr The slave address
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** \param u8Addr The register address
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** \param pu8Data Pointer to the data buffer
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** \param u32Size Data size
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** \param u32TimeOut Time out count
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** \retval en_result_t Enumeration value:
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** - Ok: Success
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** - ErrorTimeout: Time out
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******************************************************************************/
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en_result_t I2C_Reg_Read(uint8_t u8DevAddr, uint8_t u8RegAddr, uint8_t *pu8Data, uint32_t u32Size, uint32_t u32TimeOut)
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{
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en_result_t enRet;
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I2C_Cmd(I2C_UNIT, Enable);
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I2C_SoftwareResetCmd(I2C_UNIT, Enable);
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I2C_SoftwareResetCmd(I2C_UNIT, Disable);
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enRet = I2C_Start(I2C_UNIT, u32TimeOut);
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if (Ok == enRet)
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{
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enRet = I2C_TransAddr(I2C_UNIT, (uint8_t)u8DevAddr, I2CDirTrans, u32TimeOut);
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if (Ok == enRet)
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{
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enRet = I2C_TransData(I2C_UNIT, (uint8_t *)&u8RegAddr, BQ_ADR_LEN, u32TimeOut);
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if(Ok == enRet)
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{
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enRet = I2C_Restart(I2C_UNIT, u32TimeOut);
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if (Ok == enRet)
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{
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if (1ul == u32Size)
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{
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I2C_AckConfig(I2C_UNIT, I2c_NACK);
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}
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enRet = I2C_TransAddr(I2C_UNIT, (uint8_t)u8DevAddr, I2CDirReceive, u32TimeOut);
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if (Ok == enRet)
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{
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enRet = I2C_MasterDataReceiveAndStop(I2C_UNIT, pu8Data, u32Size, u32TimeOut);
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}
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I2C_AckConfig(I2C_UNIT, I2c_ACK);
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}
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}
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}
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}
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if (Ok != enRet)
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{
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I2C_Stop(I2C_UNIT, u32TimeOut);
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}
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I2C_Cmd(I2C_UNIT, Disable);
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return enRet;
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}
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/**
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******************************************************************************
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** \brief Initialize the I2C peripheral for e2prom
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** \param None
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** \retval en_result_t Enumeration value:
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** - Ok: Success
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** - ErrorTimeout: Time out
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******************************************************************************/
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static en_result_t E2_Initialize(void)
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{
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stc_i2c_init_t stcI2cInit;
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en_result_t enRet;
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float32_t fErr;
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I2C_DeInit(I2C_UNIT);
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/* Initialize I2C port*/
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PORT_SetFunc(I2C_SCL_PORT, I2C_SCL_PIN, I2C_GPIO_SCL_FUNC, Disable);
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PORT_SetFunc(I2C_SDA_PORT, I2C_SDA_PIN, I2C_GPIO_SDA_FUNC, Disable);
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/* Enable I2C Peripheral*/
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PWC_Fcg1PeriphClockCmd(I2C_FCG_USE, Enable);
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MEM_ZERO_STRUCT(stcI2cInit);
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stcI2cInit.u32ClockDiv = I2C_CLK_DIV8;
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stcI2cInit.u32Baudrate = 100000ul;
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stcI2cInit.u32SclTime = 0ul;
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enRet = I2C_Init(I2C_UNIT, &stcI2cInit, &fErr);
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I2C_BusWaitCmd(I2C_UNIT, Enable);
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return enRet;
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}
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void I2c_Config(void)
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{
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stc_port_init_t stcPortInit;
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/* configuration structure initialization */
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MEM_ZERO_STRUCT(stcPortInit);
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stcPortInit.enPinMode = Pin_Mode_Out;
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stcPortInit.enExInt = Disable;
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stcPortInit.enPullUp = Disable;
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/* SPI Port/Pin initialization */
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PORT_Init(I2C_SCL_PORT, I2C_SCL_PIN, &stcPortInit);
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stcPortInit.enPinMode = Pin_Mode_In;
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PORT_Init(I2C_SDA_PORT, I2C_SDA_PIN, &stcPortInit);
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E2_Initialize();
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}
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/*******************(C)COPYRIGHT 2022 AMG ********************END OF FILE******/
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