关于PY32F002A实现TIM1和TIM16不能同时运行

Question

关于PY32F002A实现TIM1和TIM16同时运行 mcu没有任何反应 以下是初始化和中断

Answer 1

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根据提供的代码和描述，可以看出问题出在同时使用TIM1和TIM16时MCU没有反应。这可能是因为TIM1和TIM16的时钟源相同，导致冲突。解决方法是将TIM16的时钟源改为内部时钟。
具体实现方法如下：
1. 在TIM16初始化函数中，将时钟源设置为内部时钟：

TIM16_InitStruct.TIM_ClockSource = TIM_ClockSource_Internal;

2. 在RCC初始化函数中，使能内部时钟：

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM16, ENABLE);
RCC_LSICmd(ENABLE);
while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);

完整代码如下：

#include "stm32f0xx.h"
TIM_TimeBaseInitTypeDef TIM1_InitStruct;
TIM_TimeBaseInitTypeDef TIM16_InitStruct;
void RCC_Configuration(void)
{
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM16, ENABLE);
    RCC_LSICmd(ENABLE);
    while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);
}
void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_2);
}
void TIM1_Configuration(void)
{
    TIM1_InitStruct.TIM_Prescaler = 480-1;
    TIM1_InitStruct.TIM_CounterMode = TIM_CounterMode_Up;
    TIM1_InitStruct.TIM_Period = 1000-1;
    TIM1_InitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseInit(TIM1, &TIM1_InitStruct);
    TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
    TIM_Cmd(TIM1, ENABLE);
}
void TIM16_Configuration(void)
{
    TIM16_InitStruct.TIM_Prescaler = 480-1;
    TIM16_InitStruct.TIM_CounterMode = TIM_CounterMode_Up;
    TIM16_InitStruct.TIM_Period = 500-1;
    TIM16_InitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM16_InitStruct.TIM_ClockSource = TIM_ClockSource_Internal;
    TIM_TimeBaseInit(TIM16, &TIM16_InitStruct);
    TIM_ITConfig(TIM16, TIM_IT_Update, ENABLE);
    TIM_Cmd(TIM16, ENABLE);
}
void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;
    NVIC_InitStructure.NVIC_IRQChannel = TIM1_BRK_UP_TRG_COM_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
    NVIC_InitStructure.NVIC_IRQChannel = TIM16_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}
void TIM1_BRK_UP_TRG_COM_IRQHandler(void)
{
    if(TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)
    {
        TIM_ClearITPendingBit(TIM1, TIM_IT_Update);
        GPIO_ToggleBits(GPIOA, GPIO_Pin_8);
    }
}
void TIM16_IRQHandler(void)
{
    if(TIM_GetITStatus(TIM16, TIM_IT_Update) != RESET)
    {
        TIM_ClearITPendingBit(TIM16, TIM_IT_Update);
        GPIO_ToggleBits(GPIOA, GPIO_Pin_8);
    }
}
int main(void)
{
    RCC_Configuration();
    GPIO_Configuration();
    TIM1_Configuration();
    TIM16_Configuration();
    NVIC_Configuration();
    while(1);
}