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MSP430 写的输出PWM波程序输出波形变成了类似电容充放电的波形，频率保持不变，波形也很稳定，想知道是什么问题
输出的波形之前一直没问题，一次试验中连续工作了很久后波形就畸变了
我用的是TI的MSP430F5529开发板
急求，谢谢
示波器没调好
