初始化提交

arduino-cli/libraries/M5Core2-master/examples/Advanced/MultSerial/MultSerial.ino

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+/*
+*******************************************************************************
+* Copyright (c) 2021 by M5Stack
+*                  Equipped with M5Core2 sample source code
+*                          配套  M5Core2 示例源代码
+* Visit the website for more information: https://docs.m5stack.com/en/core/core2
+* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/core/core2
+*
+* describe: MultSerial.  多串口
+* date: 2021/8/5
+******************************************************************************
+*/
+#include <M5Core2.h>
+
+void setup() {
+  M5.begin(); //Init M5Core2.  初始化 M5Core2
+  // Serial2.begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin, bool invert)
+  Serial2.begin(115200, SERIAL_8N1, 13, 14);  //Init serial port 2.  初始化串口2
+}
+
+void loop() {
+ if(Serial.available()) { //If the serial port reads data.  如果串口读到数据
+   int ch = Serial.read();    // Copy the data read from the serial port to the CH.  把串口读取到的数据复制给ch
+   Serial2.write(ch); //Serial port 2 Outputs the CH content.  串口2输出ch的内容
+   M5.Lcd.printf("Serial:%d\n",ch); //The screen prints the data received by serial port 2.  屏幕打印串口2收到的数据
+ }
+
+ if(Serial2.available()) {
+   int ch = Serial2.read();
+   Serial.write(ch);
+   M5.Lcd.printf("Serial2:%d\n",ch);
+ }
+}