57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "timer.h"
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#include "nvic.h"
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void PB_Timer_Init(TIM_TypeDef* TIMx, uint32_t Time_us)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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if( TIMx == TIM2){
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 , ENABLE); /* enable clock */
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TIM2_NVIC_Configuration(); //enable interruptation
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}
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else if( TIMx == TIM3){
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3 , ENABLE); /* enable clock */
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TIM3_NVIC_Configuration(); //enable interruptation
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}
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else if( TIMx == TIM4){
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4 , ENABLE); /* enable clock */
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TIM4_NVIC_Configuration(); //enable interruptation
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}
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else if( TIMx == TIM5){
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5 , ENABLE); /* enable clock */
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TIM5_NVIC_Configuration(); //enable interruptation
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}
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else if( TIMx == TIM6){
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6 , ENABLE); /* enable clock */
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TIM6_NVIC_Configuration(); //enable interruptation
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}
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else if( TIMx == TIM7){
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7 , ENABLE); /* enable clock */
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TIM7_NVIC_Configuration(); //enable interruptation
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}
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TIM_DeInit(TIMx);
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TIM_TimeBaseStructure.TIM_Period= Time_us-1; /* the value of auto reload register */
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TIM_TimeBaseStructure.TIM_Prescaler= (72 - 1); /* prescler : 72M/72 */
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if(TIMx == TIM3 || TIMx == TIM4){ /* ClockDivision*/
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TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV4;
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}else{
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TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;
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}
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TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; /* count upwards */
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TIM_TimeBaseInit(TIMx , &TIM_TimeBaseStructure);
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TIM_ClearFlag(TIMx , TIM_FLAG_Update); /* clear interrupt flags */
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TIM_ITConfig(TIMx ,TIM_IT_Update,ENABLE);
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TIM_Cmd(TIMx , ENABLE);
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}
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#ifdef __cplusplus
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}
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#endif
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