谢谢智哥,问题已经解决,夸一波咱家的APP
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关于定时器回调函数的问题
def tick(timer): # we will receive the timer object when being called
print(flag)
flag = flag+1tim = pyb.Timer(4, freq=0.05) # 0.05 create a timer object using timer 4 - trigger at 1Hz
tim.callback(tick)为什么flag实现不了自加