SDA,SCL任一引脚低电平Busy会置位,例程里面总线如果一直Busy就是锁死,超时100ms复位IIC。 #101
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解决因干扰,连线虚接,两边设备复位不同步等原因导致IIC通讯失败并且总线锁死问题。提高IIC总线的健壮性。