M5Atom lite UART PIN TEST bokan

M5Atom_lite_UART_PIN_TEST_Bokan.ino

//M5StickC_Serial1-2_JIkken1-EXT_-Seria1_COM5.ino
//#include <M5StickC.h>
#include <M5Atom.h>

int i;
uint8_t  outbyte,inbyte;
void setup() {
  M5.begin();
  
 Serial1.begin(115200, SERIAL_8N1, 33, 32); // RX0 TX26 EXT_IO
 //Serial2.begin(115200, SERIAL_8N1, 26, 25);// RX33 TX32 Grove
}

void loop() {
   i++;
   outbyte=i%256;//uint8_1 0-255
   //子機へ送信
   Serial1.write(outbyte);
   Serial.printf("SEND:outbyte=%d\n\r",outbyte);
   //delay(10);
   
  //子機から返信を受信する
  if (Serial1.available()) {
      inbyte = Serial1.read();
    Serial.print("RCV:inbyte=");
    Serial.println(inbyte);
  }
}