STM8L151G6 用TIME1输出PWM 输出不了，求教！

只看该作者 · 2018-11-22 17:11

初始化函数：
void TIM1_PWM_Init(void)
{
GPIO_Init(GPIOD, GPIO_Pin_1, GPIO_Mode_Out_PP_Low_Fast); //输出推拉，低电平，10MHz
TIM1_DeInit();
TIM1_TimeBaseInit(1599, TIM1_CounterMode_Up, 2000, 0);  //初始化TIM1时基单元  预分频值（）向上计数自动重装载值（2000）  重复计数器值（0）
//PD1 输出PWM波形
TIM1_ARRPreloadConfig(ENABLE);

TIM1_OC1Init( TIM1_OCMode_PWM1 , TIM1_OutputState_Enable, TIM1_OutputNState_Disable, 1000, TIM1_OCPolarity_High , TIM1_OCNPolarity_High, TIM1_OCIdleState_Set, TIM1_OCNIdleState_Set); // PWM1模式2 启用互补输出比较脉冲宽度初值是1000 输出比较极性（低电平）互补输出比较极性（低电平）输出比较空闲状态（置位）互补输出比较空闲状态（复位）
TIM1_OC2Init( TIM1_OCMode_PWM1 , TIM1_OutputState_Enable, TIM1_OutputNState_Disable, 1000, TIM1_OCPolarity_High , TIM1_OCNPolarity_High, TIM1_OCIdleState_Set, TIM1_OCNIdleState_Set);
TIM1_OC3Init( TIM1_OCMode_PWM1 , TIM1_OutputState_Enable, TIM1_OutputNState_Disable, 1000, TIM1_OCPolarity_High , TIM1_OCNPolarity_High, TIM1_OCIdleState_Set, TIM1_OCNIdleState_Set);

TIM1_CCxCmd(TIM1_Channel_1, ENABLE);
TIM1_CCxCmd(TIM1_Channel_2, ENABLE);
TIM1_CCxCmd(TIM1_Channel_3, ENABLE);

TIM1_OC1PreloadConfig(ENABLE);
TIM1_OC2PreloadConfig(ENABLE);
TIM1_OC3PreloadConfig(ENABLE);

TIM1_CtrlPWMOutputs(ENABLE);
TIM1_Cmd(ENABLE);

}
主函数：

void BSP_Configuration(void);

void main(void)
{

  BSP_Configuration();
  while (1)
  {
GPIO_ToggleBits(GPIOC,GPIO_Pin_6);
delay_ms(500);

  }

}

void BSP_Configuration(void)
{
CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);  // 设置系统时钟为 HSI
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);  // 设置时钟分频数为 1 (16 MHz)

while (CLK_GetSYSCLKSource() != CLK_SYSCLKSource_HSI)
      {}

LED_Init();//LED GPIO 管脚初始化
// Beep_Init();
// KEY_Init();
Init_Timer4();
TIM1_PWM_Init();
__enable_interrupt();

}
void BSP_Configuration(void);

void main(void)
{

  BSP_Configuration();
  while (1)
  {
GPIO_ToggleBits(GPIOC,GPIO_Pin_6);
delay_ms(500);

  }

}

void BSP_Configuration(void)
{
CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);  // 设置系统时钟为 HSI
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);  // 设置时钟分频数为 1 (16 MHz)

while (CLK_GetSYSCLKSource() != CLK_SYSCLKSource_HSI)
      {}

LED_Init();//LED GPIO 管脚初始化
// Beep_Init();
// KEY_Init();
Init_Timer4();
TIM1_PWM_Init();
__enable_interrupt();

}