M5StickC_Serial1-2_JIkken2_COM4

M5StickC_Serial1-2_JIkken2_COM4.ino

//M5StickC_Serial1-2_JIkken2_COM4.ino
#include <M5StickC.h>
int i;
// COM5＝＞COM4=>COM5 LoopBack
void setup() {
  M5.begin();
  Serial.begin(115200);
  Serial1.begin(115200, SERIAL_8N1, 0, 26); // RX0 TX26 EXT_IO
  Serial2.begin(115200, SERIAL_8N1, 32, 33);// RX32 TX33 Grove
}

void loop() {
   i++;
  //COM4からSerial2で受信する
  if (Serial2.available()) {
    // Serial2(Grove) to Serial(PC)
    int inByte = Serial2.read();
    Serial.print("Serial2_Receive from COM5:");
    Serial.println(inByte);
    //Serial1からCOM5へ返信
    Serial1.write(inByte);
  }
}