led.h

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/**
 * @file    led.h
 * @author  foxBMS Team
 * @date    2021-09-28 (date of creation)
 * @updated 2023-10-12 (date of last update)
 * @version v1.6.0
 * @ingroup DRIVERS
 * @prefix  LED
 *
 * @brief   Header file of the debug LED driver
 * @details This module controls the debug LED that is directly connected to a
 *          MCU pin. It is used to indicate basic operation states.
 *
 *          * During startup the LED is enabled continuously.
 *          * Once the startup is complete the LED should be called with
 *            #LED_SetToggleTime() in order to indicate whether the BMS has
 *            started normal operation (#LED_NORMAL_OPERATION_ON_OFF_TIME_ms,
 *            slow blinking pattern) or if it is in an error state
 *            (#LED_ERROR_OPERATION_ON_OFF_TIME_ms, fast blinking pattern).
 *          * #LED_SetToggleTime() can be called anytime the indicated pattern
 *            shall change.
 */
 
#ifndef FOXBMS__LED_H_
#define FOXBMS__LED_H_
 
/*========== Includes =======================================================*/
 
#include <stdint.h>
 
/*========== Macros and Definitions =========================================*/
/** time span to be used with #LED_SetToggleTime() indicating normal operation */
#define LED_NORMAL_OPERATION_ON_OFF_TIME_ms (500u)
/** time span to be used with #LED_SetToggleTime() indicating an error state */
#define LED_ERROR_OPERATION_ON_OFF_TIME_ms (100u)
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/*========== Extern Function Prototypes =====================================*/
/**
 * @brief   Turn debug LED on
 * @details This function is intended to be called once during startup before
 *          #LED_SetToggleTime() is called (after startup).
 */
extern void LED_SetDebugLed(void);
 
/**
 * @brief   Trigger function to periodically toggle debug LED. Frequency can be
 *          set via function #LED_SetToggleTime()
 */
extern void LED_Trigger(void);
 
/**
 * @brief   Set debug LED with defined frequency
 * @param   onOffTime_ms requested time for ON/OFF duration in ms
 */
extern void LED_SetToggleTime(uint32_t onOffTime_ms);
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
#ifdef UNITY_UNIT_TEST
extern uint32_t TEST_LED_GetOnOffTime(void);
extern void TEST_LED_SetOnOffTime(uint32_t val);
#endif
 
#endif /* FOXBMS__LED_H_ */