初始化提交
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/*
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*******************************************************************************
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* Copyright (c) 2021 by M5Stack
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* Equipped with M5Core sample source code
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* 配套 M5Core 示例源代码
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* Visit the website for more information: https://docs.m5stack.com/en/core/gray
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* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/core/gray
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*
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* describe: Hall. 霍尔传感器
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* date: 2021/8/18
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*******************************************************************************
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Please connect to Port B,LASER Unit wireless UART application: burn the program to two M5Cores
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And connect LASER.TX and LASER.RX
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Point LASER.TX to LASER.RX and press the button on the panel to send characters to the receiver of LASER.RX.
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请连接端口B,在屏幕上显示字符串。LASER Unit无线UART应用:刻录程序到两个M5Core并分别连接 LASER RX 和 LASER TX
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然后按下LASER TX面板上的按钮,将字符发送到LASER.RX接收器。
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*/
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#include <M5Core2.h>
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char ch;
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#define RX
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void setup() {
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M5.begin(); //Init M5Core2. 初始化M5Core2
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// Serial2.begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin, bool invert)
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Serial2.begin(9600, SERIAL_8N1, 13, 14);
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pinMode(5, OUTPUT);
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digitalWrite(5, 1);
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M5.Lcd.setTextSize(4);
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M5.Lcd.setTextColor(GREEN);
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M5.Lcd.setCursor(60, 50);
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#ifdef RX
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M5.Lcd.print("LASER RX");
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#elif defined TX
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M5.Lcd.print("LASER TX");
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#else
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M5.Lcd.setCursor(30, 50);
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M5.Lcd.print("LASER TX/RX");
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M5.Lcd.setCursor(50, 200);
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M5.Lcd.print('A');
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M5.Lcd.setCursor(150, 200);
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M5.Lcd.print('B');
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M5.Lcd.setCursor(240, 200);
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M5.Lcd.print('C');
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#endif
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M5.Lcd.setCursor(0, 100);
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}
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void loop() {
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#ifdef RX
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M5.update();
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if(Serial2.available()) {
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char ch = Serial2.read();
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M5.Lcd.print(ch);
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}
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if (M5.BtnA.wasReleased()) {
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M5.Lcd.clear();
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M5.Lcd.setCursor(0, 0);
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}
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#elif defined TX
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Serial2.write('A');
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delay(50);
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#else
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if (M5.BtnA.wasReleased()) {
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ch = 'A';
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Serial2.write(ch);
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} else if (M5.BtnB.wasReleased()) {
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ch = 'B';
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Serial2.write(ch);
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} else if (M5.BtnC.wasReleased()) {
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ch = 'C';
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Serial2.write(ch);
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}
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M5.update();
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if(Serial2.available()) {
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char ch = Serial2.read();
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M5.Lcd.print(ch);
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}
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#endif
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}
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