afe.h

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 *
 * @copyright © 2010 - 2023, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
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/**
 * @file    afe.h
 * @author  foxBMS Team
 * @date    2020-05-08 (date of creation)
 * @updated 2023-10-12 (date of last update)
 * @version v1.6.0
 * @ingroup DRIVER
 * @prefix  AFE
 *
 * @brief   AFE driver header
 *
 * @details TODO
 */
 
#ifndef FOXBMS__AFE_H_
#define FOXBMS__AFE_H_
 
/*========== Includes =======================================================*/
 
#include "fstd_types.h"
 
#include <stdbool.h>
#include <stdint.h>
 
/*========== Macros and Definitions =========================================*/
 
/** Requests for the AFE driver */
typedef enum {
    AFE_START_REQUEST, /*!<    */
    AFE_STOP_REQUEST,  /*!<    */
    AFE_NO_REQUEST,    /*!<    */
    AFE_REQUEST_E_MAX,
} AFE_REQUEST_e;
 
/** Type of I2C transfer over AFE slave */
typedef enum {
    AFE_I2C_TRANSFER_TYPE_READ,
    AFE_I2C_TRANSFER_TYPE_WRITEREAD,
    AFE_I2C_TRANSFER_TYPE_READ_SUCCESS,
    AFE_I2C_TRANSFER_TYPE_READ_FAIL,
    AFE_I2C_TRANSFER_TYPE_WRITE,
    AFE_I2C_TRANSFER_TYPE_WRITE_SUCCESS,
    AFE_I2C_TRANSFER_TYPE_WRITE_FAIL,
} AFE_I2C_TRANSFER_TYPE_e;
 
/** Data to transmit on I2C bus over AFE slave */
typedef struct {
    uint8_t module;
    AFE_I2C_TRANSFER_TYPE_e transferType;
    uint8_t deviceAddress;
    uint8_t registerAddress;
    uint8_t readData[13u];
    uint8_t readDataLength;
    uint8_t writeData[13u];
    uint8_t writeDataLength;
} AFE_I2C_QUEUE_s;
 
/** period for open wire measurement */
#define AFE_ERROR_OPEN_WIRE_PERIOD_ms (30000u)
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/*========== Extern Function Prototypes =====================================*/
/** tick function, this function is called to advance the state machine */
extern STD_RETURN_TYPE_e AFE_TriggerIc(void);
/** initializer, this function is called in order to initialize the AFE */
extern STD_RETURN_TYPE_e AFE_Initialize(void);
 
/** this function returns whether the first measurement cycle has finished */
extern bool AFE_IsFirstMeasurementCycleFinished(void);
 
/**
 * @brief   Checks if the first AFE measurement cycle was made
 * @return  true is the first measurement cycle was made, false
 *          otherwise
 */
extern bool AFE_IsFirstMeasurementCycleFinished(void);
 
/**
 * @brief   Makes the initialization request to the AFE state machine
 * @return  true or false
 */
extern STD_RETURN_TYPE_e AFE_StartMeasurement(void);
 
/**
 * @brief           Makes the request to the AFE state machine to write to the
 *                  IO port-expander
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestIoWrite(uint8_t string);
 
/**
 * @brief           Makes the request to the AFE state machine to read from the
 *                  IO port-expander
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestIoRead(uint8_t string);
 
/**
 * @brief           Makes the request to the AFE state machine to read from the
 *                  external temperature sensor on slaves
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestTemperatureRead(uint8_t string);
 
/**
 * @brief           Makes the request to the AFE state machine to read
 *                  balancing feedback from the slaves
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestBalancingFeedbackRead(uint8_t string);
 
/**
 * @brief           Makes the request to the AFE state machine to read from the
 *                  external EEPROM on slaves
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestEepromRead(uint8_t string);
 
/**
 * @brief           Makes the request to the AFE state machine to write to the
 *                  external EEPROM on slaves
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestEepromWrite(uint8_t string);
 
/**
 * @brief           Makes the request to the AFE state machine to perform
 *                  open-wire check
 * @param   string  string addressed by the request
 */
extern STD_RETURN_TYPE_e AFE_RequestOpenWireCheck(uint8_t string);
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
#ifdef UNITY_UNIT_TEST
#endif
 
#endif /* FOXBMS__AFE_H_ */