STM32F407IGT6无法输出PWM波

chenbingjy

代码：

1. int main(void)
   
2. {
   
3.     GPIO_Config_T GPIO_ConfigStruct;
   
4.     TMR_BaseConfig_T TMR_TimeBaseStruct;
   
5.     TMR_OCConfig_T OCcongigStruct;
   
6. 
   
7.     RCM_EnableAPB2PeriphClock(RCM_APB2_PERIPH_TMR1);
   
8.     RCM_EnableAHB1PeriphClock(RCM_AHB1_PERIPH_GPIOA | RCM_AHB1_PERIPH_GPIOB);
   
9. 
   
10.     GPIO_ConfigPinAF(GPIOA, GPIO_PIN_SOURCE_8, GPIO_AF_TMR1);
    
11.     GPIO_ConfigPinAF(GPIOA, GPIO_PIN_SOURCE_7, GPIO_AF_TMR1);
    
12. 
    
13.     /* Config PA7 and PA8 for complementary output PWM */
    
14.     GPIO_ConfigStruct.pin = GPIO_PIN_7 | GPIO_PIN_8;
    
15.     GPIO_ConfigStruct.mode = GPIO_MODE_AF;
    
16.     GPIO_ConfigStruct.otype = GPIO_OTYPE_PP;
    
17.     GPIO_ConfigStruct.speed = GPIO_SPEED_100MHz;
    
18.     GPIO_Config(GPIOA, &GPIO_ConfigStruct);
    
19. 
    
20.     /* config TMR1 */
    
21.     TMR_TimeBaseStruct.clockDivision = TMR_CLOCK_DIV_1;
    
22.     TMR_TimeBaseStruct.countMode = TMR_COUNTER_MODE_UP;
    
23.     TMR_TimeBaseStruct.division = DIV;
    
24.     TMR_TimeBaseStruct.period = 999;
    
25.     TMR_ConfigTimeBase(TMR1, &TMR_TimeBaseStruct);
    
26. 
    
27.     OCcongigStruct.idleState = TMR_OC_IDLE_STATE_RESET;
    
28.     OCcongigStruct.mode = TMR_OC_MODE_PWM1;
    
29.     OCcongigStruct.nIdleState = TMR_OC_NIDLE_STATE_RESET;
    
30.     OCcongigStruct.nPolarity = TMR_OC_NPOLARITY_HIGH;
    
31.     OCcongigStruct.outputNState = TMR_OC_NSTATE_ENABLE;
    
32.     OCcongigStruct.outputState = TMR_OC_STATE_ENABLE;
    
33.     OCcongigStruct.polarity = TMR_OC_POLARITY_HIGH;
    
34.     OCcongigStruct.pulse = 300;
    
35.     TMR_ConfigOC1(TMR1, &OCcongigStruct);
    
36. 
    
37.     TMR_ConfigOC1Preload(TMR1, TMR_OC_PRELOAD_ENABLE);
    
38.     TMR_EnableAutoReload(TMR1);
    
39.     TMR_Enable(TMR1);
    
40.     TMR_EnablePWMOutputs(TMR1);
    
41. 
    
42.     while(1)
    
43.     {
    
44.     }
    
45. 
    
46. }

复制代码

请问大神，哪里有错？谢谢

你的蓝朋友

用CUBEMX把，很容易的。你对硬件不熟，还是用hal