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stm32f407初始化TIM12中断时卡死
- 2019-11-01
程序卡死在了这一行 NVIC_InitStructure.NVIC_IRQChannel = TIM8_BRK_TIM12_IRQn; 注释掉这一行后可以运行 整个函数为 #define WHEEL_D 8.2 #define COUNT_PER_ROUND 320 #define DELTA_T 0.01 int last_count1 = 0; int last_count2 = 0; int last_count3 = 0; int last_count4 = 0; void Cal_Motor_Speed_Init(void) { RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM12 ENABLE); TIM_TimebaseInitTypeDef TIM12_TimebaseInitStruct; TIM12_TimebaseInitStruct.TIM_Period = 1000 - 1; TIM12_TimebaseInitStruct.TIM_Prescaler = 840 - 1; TIM12_TimebaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up; TIM12_TimebaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimebaseInit(TIM12 &TIM12_TimebaseInitStruct); NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = TIM8_BRK_TIM12_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); TIM_ITConfig(TIM12 TIM_IT_Update ENABLE); TIM_ClearFlag(TIM12 TIM_FLAG_Update); TIM_SetCounter(TIM12 0); TIM_Cmd(TIM12 ENABLE); } /@@* void TIM8_BRK_TIM12_IRQnHandler(void) { if(TIM_GetITStatus(TIM12 TIM_IT_Update)==SET) { motor1_vel = (count1 - last_count1) / DELTA_T; motor1_vel = 3.14 * WHEEL_D * motor1_vel / 320; last_count1 = count1; } TIM_ClearITPendingBit(TIM12 TIM_IT_Update); } */
