最近使用C2000-launchpad F28027.用usb可以正常烧写程序(包含EPWM和ADC),引脚输出正常。断开USB直接用5v直流稳压给开发板供电时,pwm引脚没有输出。开发板上的TX和RX led也点亮了,但实际上我的程序里并没有用到这个模块的功能。不知道是什么原因。我试讲程序写进flash的,也测过这种情况下开发板的5V和3.3V引脚都是正常的。请高人指点!!多谢啦~
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