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ESP32-开源迷你游戏掌机
焊接完后,ESP32游戏机的按键无法使用,原因是PCF8574芯片选择错误,不同PCF8574芯片的IIC地址不同,导致按键无法使用,开源程序中PCF8574芯片的IIC地址为0x201=0x40,所以芯片使用的是PCF8574T,我焊接的是PCF8574AT,地址为0x381=0x70,无法适配导致按键无法使用。
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