根据定时器实验，又添加了BEEP功能，感觉代码有问题，不知道怎么改（timer.c文件）

天道 · 发表于 2014-7-30 15:03:30

[mw_shl_code=c,true]#include"timer.h" #include"led.h" #include"beep.h" void TIMX_Int_Init(u16 arr,u16 psc) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); //???????? //?¨?±?÷?????? TIM_TimeBaseStructure.TIM_Period=arr; TIM_TimeBaseStructure.TIM_Prescaler=psc; TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure); TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE); TIM_TimeBaseStructure.TIM_Period=arr; TIM_TimeBaseStructure.TIM_Prescaler=psc; TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure); TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE); //???????????è?? NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x00; NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x02; NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Init(&NVIC_InitStructure); NVIC_InitStructure.NVIC_IRQChannel=TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x00; NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x03; NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; NVIC_Init(&NVIC_InitStructure); TIM_Cmd(TIM3,ENABLE); TIM_Cmd(TIM2,ENABLE); } //?¨?±?÷·??????? void TIM3_IRQHandler(void) { if(TIM_GetITStatus(TIM3,TIM_IT_Update)!=RESET) { TIM_ClearITPendingBit(TIM3,TIM_IT_Update); LED1=!LED1; } } void TIM2_IRQHandler(void) { if(TIM_GetITStatus(TIM2,TIM_IT_Update)!=RESET) { TIM_ClearITPendingBit(TIM2,TIM_IT_Update); BEEP=!BEEP; } } [/mw_shl_code]