ESP32S2 的默认 UART0 RX/TX 引脚是什么?
如 ESP32S2 数据手册所示:
U0TXD(UART 0 发送)是GPIO43,在 QFN56 封装中是引脚 48U0RXD是GPIO44,在 QFN56 封装中是引脚 49
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Embedded, ESP8266/ESP32
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