i2c.h

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/**
 *
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 *
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/**
 * @file    i2c.h
 * @author  foxBMS Team
 * @date    2021-07-22 (date of creation)
 * @updated 2021-12-08 (date of last update)
 * @ingroup DRIVERS
 * @prefix  I2C
 *
 * @brief   Header for the driver for the I2C module
 *
 */
 
#ifndef FOXBMS__I2C_H_
#define FOXBMS__I2C_H_
 
/*========== Includes =======================================================*/
#include "general.h"
 
#include "HL_i2c.h"
 
/*========== Macros and Definitions =========================================*/
 
/** Timeout to avoid infinite loops when waiting for flags */
#define I2C_TIMEOUT_ITERATIONS (1000u)
 
/** Transmitter DMA enable */
#define I2C_TXDMAEN (0x2u)
/** Receiver  DMA enable */
#define I2C_RXDMAEN (0x1u)
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/*========== Extern Function Prototypes =====================================*/
/** Initialize the I2C hardware
 *
 * This function has to be called before any call to the rest of this API
 */
extern void I2C_Initialize(void);
 
/**
 * @brief   reads from an I2C slave, blocking.
 *
 * @param   slaveAddress: address of slave to communicate with
 * @param   readAddress:  address of first register to read from
 * @param   nrBytes:      number of registers to read
 * @param   readData:     buffer containing the read data
 *
 * @return  retVal:      STD_OK if transmission OK, STD_NOT_OK otherwise
 *
 */
extern STD_RETURN_TYPE_e I2C_Read(uint32_t slaveAddress, uint8_t readAddress, uint32_t nrBytes, uint8_t *readData);
 
/**
 * @brief   reads from an I2C slave, no register address written first, blocking.
 *
 * @param   slaveAddress: address of slave to communicate with
 * @param   nrBytes:      number of registers to read
 * @param   readData:     buffer containing the read data
 *
 * @return  retVal:      STD_OK if transmission OK, STD_NOT_OK otherwise
 *
 */
extern STD_RETURN_TYPE_e I2C_ReadDirect(uint32_t slaveAddress, uint32_t nrBytes, uint8_t *readData);
 
/**
 * @brief   writes to an I2C slave, blocking.
 *
 * @param   slaveAddress:  address of slave to communicate with
 * @param   writeAddress:  address of first register to write to
 * @param   nrBytes:       number of registers to write
 * @param   writeData:     buffer containing the data to write
 *
 * @return  retVal:       STD_OK if transmission OK, STD_NOT_OK otherwise
 *
 */
extern STD_RETURN_TYPE_e I2C_Write(uint32_t slaveAddress, uint8_t writeAddress, uint32_t nrBytes, uint8_t *writeData);
 
/**
 * @brief   writes to an I2C slave, no register address written first, blocking.
 *
 * @param   slaveAddress:  address of slave to communicate with
 * @param   nrBytes:       number of registers to write
 * @param   writeData:     buffer containing the data to write
 *
 * @return  retVal:       STD_OK if transmission OK, STD_NOT_OK otherwise
 *
 */
extern STD_RETURN_TYPE_e I2C_WriteDirect(uint32_t slaveAddress, uint32_t nrBytes, uint8_t *writeData);
 
/**
 * @brief   reads from an I2C slave, using DMA.
 *
 * @param   slaveAddress: address of slave to communicate with
 * @param   readAddress:  address of first register to read from
 * @param   nrBytes:      number of registers to read
 * @param   readData:     buffer containing the read data
 *
 * @return  retVal:      STD_OK if transmission OK, STD_NOT_OK otherwise
 *
 */
extern STD_RETURN_TYPE_e I2C_ReadDma(uint32_t slaveAddress, uint8_t readAddress, uint32_t nrBytes, uint8_t *readData);
 
/**
 * @brief   writes to an I2C slave, using DMA.
 *
 * @param   slaveAddress:  address of slave to communicate with
 * @param   writeAddress:  address of first register to write to
 * @param   nrBytes:       number of registers to write
 * @param   writeData:     buffer containing the data to write
 *
 * @return  retVal:       STD_OK if transmission OK, STD_NOT_OK otherwise
 *
 */
extern STD_RETURN_TYPE_e I2C_WriteDma(
    uint32_t slaveAddress,
    uint8_t writeAddress,
    uint32_t nrBytes,
    uint8_t *writeData);
 
/**
 * @brief   sets stop condition.
 *
 */
extern void I2C_SetStopNow(void);
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
#ifdef UNITY_UNIT_TEST
 
#endif
 
#endif /* FOXBMS__I2C_H_ */