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设置PB6唤醒源
没看出来有问题，配置的没有问题，现在是每次毕现按按键不唤醒吗
不是的，就是偶发的。因为是接电池，如果唤不醒只能重新断电，很影响。是否要在低功耗模式前把多任务全部关闭。
休眠的时候不能co_printf还有一下截图的也不能删掉
设置PB6唤醒源
