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146 lines
2.2 KiB
146 lines
2.2 KiB
#include "timer.h"
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#define BASE ((TIM_TypeDef *)timerBase_Addr_List[timer])
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void timerReset(timerNo_t timer)
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{
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// reset via RCC_APBxRSTR Register
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}
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void timerActivateBus(timerNo_t timer)
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{
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if(timerBus_No[timer]==1)
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{
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RCC->APB1ENR |= (1<<timerBus_En_bitPos[timer]);
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return;
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}
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RCC->APB2ENR |= (1<<timerBus_En_bitPos[timer]);
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}
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void timerEnableTimer(timerNo_t timer)
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{
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BASE->CR1 |= 0x01; //all the timers have the same CEN bit in CR1 register pos 0
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}
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void timerDisableTimer(timerNo_t timer)
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{
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BASE->CR1 &=~ 0x01; //all the timers have the same CEN bit in CR1 register pos 0
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}
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void timerSetMode(timerNo_t timer, timerMode_t mode)
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{
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}
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void timerSetCountDirection(timerNo_t timer, timerCountDirection_t direction)
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{
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if(direction == upCounting)
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{
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BASE->CR1 &=~ TIM_CR1_DIR;
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return;
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}
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BASE->CR1 |= TIM_CR1_DIR;
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}
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void timerSetPrescaler(timerNo_t timer, uint32_t prescaler)
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{
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BASE->PSC = prescaler;
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}
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void timerSetPostscaler(timerNo_t timer, uint32_t postscaler)
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{
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}
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void timerSetAutoReload(timerNo_t timer, uint32_t reload)
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{
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BASE->ARR = reload;
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}
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void timerClearCounter(timerNo_t timer)
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{
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BASE->CNT = 0;
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}
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uint8_t timerGetUpdateInterrupt(timerNo_t timer)
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{
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return (BASE->SR & 1);
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}
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void timerClearUpdateInterrupt(timerNo_t timer)
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{
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BASE->SR &= ~1;
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}
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/* Second stage configuration */
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/* Bus Clock
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* ------------------------------ = Duty (Hz)
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* (Prescaler-1) * (Period-1)
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*/
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void timerSetHz(timerNo_t timer, uint16_t hz)
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{
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uint32_t prescaler = 8000000;
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uint32_t period = 0;
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uint32_t temp = 0;
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do{
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prescaler = prescaler / 10;
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}while(prescaler > 0xffff);
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do{
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period = period + 1;
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temp = 8000000/(prescaler*(period));
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}while(temp >= hz);
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timerActivateBus(timer);
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timerSetPrescaler(timer, prescaler-1);
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timerSetAutoReload(timer, period-1);
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timerClearCounter(timer);
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}
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void timerSetMs(timerNo_t timer, uint16_t ms)
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{
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}
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void timerSetNs(timerNo_t timer, uint16_t ns)
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{
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}
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void timerSetPs(timerNo_t timer, uint16_t ps)
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{
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}
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void timerSart(timerNo_t timer)
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{
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}
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void timerStop(timerNo_t timer)
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{
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}
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uint32_t timerGetCount(timerNo_t timer)
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{
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return BASE->CNT;
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}
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void timerThrowError(timerError_t error)
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{
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}
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