想用PWM但是一直输出LOW
不知道是不是板子的问题但是再别的f1板子上还是可以跑相似的程序的
多谢各位大佬相助
- #include "stm32f0xx_tim.h"
- #include "stm32f0xx_rcc.h"
- #include "stm32f0xx_gpio.h"
- #include "stm32f0xx.h"
-
- int main(void)
- {
- GPIO_InitTypeDef port;
- TIM_TimeBaseInitTypeDef timer;
- TIM_OCInitTypeDef timerPWM;
-
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM14, ENABLE);
-
- GPIO_StructInit(&port);
- port.GPIO_Mode = GPIO_Mode_AF;
- port.GPIO_Pin = GPIO_Pin_4;
- port.GPIO_Speed = GPIO_Speed_Level_3;
- GPIO_Init(GPIOA, &port);
-
- TIM_TimeBaseStructInit(&timer);
- timer.TIM_Prescaler = 480;
- timer.TIM_Period = 1000;
- timer.TIM_ClockDivision = TIM_CKD_DIV1;
- timer.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM14, &timer);
-
- // TIM_SetAutoreload(TIM14, 1000);
- TIM_OC1PreloadConfig(TIM14, TIM_OCPreload_Enable);
-
- TIM_OCStructInit(&timerPWM);
- timerPWM.TIM_OCMode = TIM_OCMode_PWM1;
- timerPWM.TIM_OutputState = TIM_OutputState_Enable;
- timerPWM.TIM_Pulse = 500;
- timerPWM.TIM_OCPolarity = TIM_OCPolarity_High;
- TIM_OC1Init(TIM14, &timerPWM);
- TIM_Cmd(TIM14, ENABLE);
-
- // TIM_OC1FastConfig(TIM14, TIM_OCFast_Disable);
- // TIM_CtrlPWMOutputs(TIM14, ENABLE);
- // TIM_OC1PreloadConfig(TIM14, TIM_OCPreload_Enable);
-
- while(1)
- {
- }
- }
| 
楼主
