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有碰到这个问题过的吗,我用定时器点亮IO口的灯,这个灯应该是闪烁,但是出现常亮,就是输出低电平,但是我有一个IO口输出低电平是对的,感觉是晶振没有震荡导致的,但是换了晶振还是这样
看一下boot相关的引脚是怎么处理的?!
谢谢 问题解决了 是因为我硬件有个芯片没有焊上,导致程序运行到那个地方一直等待