我在使用MSP430FR2433库函数进行PWM输出实验的时候，发现无法成功输出。反复看了注释、手册都找不到问题，求大佬帮忙。
我写的PWM初始化函数是这样

1. void PWM_Init(void)
   
2. {
   
3.   GPIO_Init();
   
4.   Timer_Init();
   
5.   
   
6. }
   
7. 
   
8. void GPIO_Init(void)
   
9. {
   
10.   GPIO_setAsOutputPin(GPIO_PORT_P1 , GPIO_PIN1);
    
11. }
    
12. 
    
13. void Timer_Init(void)
    
14. {
    
15.   Timer_A_initUpModeParam Timer_A_initUpModeParameter;
    
16.   Timer_A_initCompareModeParam Timer_A_initCompareModeParameter;
    
17. /**********************************************************************/
    
18.   
    
19.   Timer_A_initUpModeParameter.captureCompareInterruptEnable_CCR0_CCIE = TIMER_A_CCIE_CCR0_INTERRUPT_DISABLE;
    
20.   Timer_A_initUpModeParameter.clockSource = TIMER_A_CLOCKSOURCE_EXTERNAL_TXCLK;
    
21.   Timer_A_initUpModeParameter.clockSourceDivider = TIMER_A_CLOCKSOURCE_DIVIDER_1;
    
22.   Timer_A_initUpModeParameter.startTimer = 0;
    
23.   Timer_A_initUpModeParameter.timerClear = TIMER_A_DO_CLEAR ;
    
24.   Timer_A_initUpModeParameter.timerInterruptEnable_TAIE = TIMER_A_TAIE_INTERRUPT_DISABLE;
    
25.   Timer_A_initUpModeParameter.timerPeriod = 1000;
    
26.   
    
27.   Timer_A_initUpMode(TIMER_A0_BASE , & Timer_A_initUpModeParameter);
    
28.   
    
29. /*************************************************************************/
    
30.   
    
31.   Timer_A_initCompareModeParameter.compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_1;
    
32.   Timer_A_initCompareModeParameter.compareInterruptEnable = TIMER_A_CAPTURECOMPARE_INTERRUPT_DISABLE;
    
33.   Timer_A_initCompareModeParameter.compareOutputMode = TIMER_A_OUTPUTMODE_TOGGLE_SET;
    
34.   Timer_A_initCompareModeParameter.compareValue = 500;
    
35.   
    
36.   Timer_A_initCompareMode(TIMER_A0_BASE, & Timer_A_initCompareModeParameter);
    
37. 
    
38. /***************************************************************************/
    
39.   
    
40.   Timer_A_startCounter(TIMER_A0_BASE , TIMER_A_UP_MODE);
    
41.   
    
42. }

复制代码
然后在main函数中调用PWM_Init（）函数。
附上IAR工程
此帖出自小平头技术问答