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110 lines
3.3 KiB
110 lines
3.3 KiB
/**
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**************************************************************************************************
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* @file timer.h
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* @author Kerem Yollu & Edwin Koch
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* @date 19.12.2021
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* @version 1.0
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**************************************************************************************************
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* @brief This is the genral interface for timers.
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*
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* **Detailed Description :**
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* This the timer interface and belongs to the interface layer
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*
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* @todo 06.03.22 Following functions are to be implmented : timerSetHz / timerSetMs / timerSetNs / timerSetPs
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* @todo 06.03.22 Create all the posssible timerInitxxxxxxx versions Ex. timerInitPWM().
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**************************************************************************************************
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*/
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#ifndef _TIMER_H_
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#define _TIMER_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "hardwareDescription.h"
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/*! Emun of possible Timer Errors */
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typedef enum {
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functionNotSupported, /*!< This Funtion is not awailable on this **HARDWARE** */
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prescalerOutOfRange /*!< Set prescaler value exeeds the Register's **HARDWARE** size */
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} timerError_t;
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typedef enum {
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upCounting,
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downCounting
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} timerCountDirection_t;
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typedef enum {
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counter,
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inputCapture,
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outputCompare,
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onePulse
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} timerMode_t;
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/*!
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* Output compare modes.
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*/
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typedef enum {
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frozen, /*!< Pin update is **de-activated** even when a compare match happens */
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high_on_match, /*!< Pin goes **high** when a compare match occurs */
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low_on_match, /*!< Pin goes **low** when a compare match occurs */
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toggle, /*!< Pin **toggles** when a compare match occurs */
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inactive_force_high, /*!< Pin if forced **high** */
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inactive_force_low, /*!< Pin if forced **low** */
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pwm_normal, /*!< Standart PWM mode */
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pwm_inverted /*!< Inverted PWM mode */
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};
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/*!
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* Reset the timer to its default state.
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*/
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void timerReset(timerNo_t timer);
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void timerActivateBus(timerNo_t timer);
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void timerEnable(timerNo_t timer);
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void timerDisable(timerNo_t timer);
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void timerSetMode(timerNo_t timer, timerMode_t mode);
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void timerSetCountDirection(timerNo_t timer, timerCountDirection_t direction);
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/*!
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* Sets the given timer's prescaler value.
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* This fucntion will also check if the entered prascaler value exeeds the register size.
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* If violated the prescalerOutOfRange Error will be generated.
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*/
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void timerSetPrescaler(timerNo_t timer, uint32_t prescaler);
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void timerSetPostscaler(timerNo_t timer, uint32_t postscaler);
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void timerSetAutoReload(timerNo_t timer, uint32_t reload);
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uint8_t timerGetUpdateInterrupt(timerNo_t timer);
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void timerClearUpdateInterrupt(timerNo_t timer);
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void timerClearCounter(timerNo_t timer);
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/* Second stage configuration */
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void timerInitCounter( timerNo_t timer,
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uint32_t prescaler,
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uint32_t period,
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timerCountDirection_t direction);
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void timerInitPwm( timerNo_t timer,
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uint32_t prescaler,
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uint32_t period,
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timerCountDirection_t direction);
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void timerSetHz(timerNo_t timer, uint16_t hz);
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void timerSetMs(timerNo_t timer, uint16_t ms);
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void timerSetNs(timerNo_t timer, uint16_t ns);
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void timerSetPs(timerNo_t timer, uint16_t ps);
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void timerSart(timerNo_t timer);
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void timerHalt(timerNo_t timer);
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void timerStop(timerNo_t timer);
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uint32_t timerGetCount(timerNo_t timer);
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void timerThrowError(timerError_t error);
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#ifdef __cplusplus
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}
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#endif
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#endif // _TIMER_H_
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