mcu.h

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 *
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/**
 * @file    mcu.h
 * @author  foxBMS Team
 * @date    2019-02-19 (date of creation)
 * @updated 2023-02-03 (date of last update)
 * @version v1.5.0
 * @ingroup DRIVERS
 * @prefix  MCU
 *
 * @brief   Headers for the driver for the MCU module.
 *
 */
 
#ifndef FOXBMS__MCU_H_
#define FOXBMS__MCU_H_
 
/*========== Includes =======================================================*/
#include <stdbool.h>
#include <stdint.h>
 
/*========== Macros and Definitions =========================================*/
 
/**
 * @brief   largest pin number that exists in TMS570LC4357
 * @details Checked in the data sheet spnu563a: The largest pin number that is
 *          used is 31.
*/
#define MCU_LARGEST_PIN_NUMBER (31u)
 
/**
 * @brief   maximum number of channels measured by the ADC1
 * @details Checked in the data sheet spnu563a: ADC1 supports 32 channels
 */
#define MCU_ADC1_MAX_NR_CHANNELS (32u)
 
#ifndef UNITY_UNIT_TEST
/** Address of Free Running Counter 0 (FRC0) */
#define MCU_RTI_CNT0_FRC0_REG (*((volatile uint32_t *)0xFFFFFC10u))
#else
extern volatile uint32_t MCU_RTI_CNT0_FRC0_REG;
#endif
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/*========== Extern Function Prototypes =====================================*/
 
/**
 * @brief   Wait blocking a certain time in microseconds.
 * @details This function uses the Free Running Counter 0 (FRC0) to generate a
 *          delay in microseconds. It does not modify anything related to the
 *          counter. This counter is already used by FreeRTOS.
 * @param   delay_us   time in microseconds to wait
 */
extern void MCU_Delay_us(uint32_t delay_us);
 
/**
 * @brief   Get the current value of the Free Running Counter 0 (FRC0)
 * @details This function returns the current value of the Free Running
 *          Counter 0 (FRC0). This counter is already used by FreeRTOS and this
 *          function does nothing more than accessing this value.
 * @returns the current counter value of FRC0
 */
extern uint32_t MCU_GetFreeRunningCount(void);
 
/**
 * @brief   Convert the counter value FRC0 to a time in microseconds
 * @details This function applies a scaling factor to the FRC0 counter value,
 *          which can be retrieved with #MCU_GetFreeRunningCount() so that this
 *          value represents microseconds. Typically this used with counter
 *          differences in order to get timing estimates on microsecond-level.
 * @param[in]   count   counter value of the FRC0
 * @returns     equivalent time in microseconds
 */
extern uint32_t MCU_ConvertFrcDifferenceToTimespan_us(uint32_t count);
 
/**
 * @brief   Checks if a timeout in microseconds has elapsed
 * @details First the function #MCU_GetFreeRunningCount() must be called
 *          to retrieve the current value of the free running counter.
 *          This function checks if the time given as parameter has elapsed
 *          since the counter was retrieved.
 * @param[in]   startCounter  counter value of the FRC0, used as starting point
 * @param[in]   timeout_us    time in microseconds to check against
 * @returns     true if timeout has elapsed, false otherwise
 */
extern bool MCU_IsTimeElapsed(uint32_t startCounter, uint32_t timeout_us);
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
#ifdef UNITY_UNIT_TEST
#endif
 
#endif /* FOXBMS__MCU_H_ */