52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
/**
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* @file SerialExample.ino
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* @author Lewis He (lewishe@outlook.com)
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* @license MIT
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* @copyright Copyright (c) 2023 Shenzhen Xin Yuan Electronic Technology Co., Ltd
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* @date 2023-06-19
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* @note Serial usage example
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*/
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#include <Arduino.h>
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const uint8_t rx1_pin = 17;
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const uint8_t tx1_pin = 18;
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const uint8_t rx2_pin = 21;
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const uint8_t tx2_pin = 16;
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void setup()
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{
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// Arduino IDE USB_CDC_ON_BOOT = Eanble ,default Serial input & output data from USB-C
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// Arduino IDE USB_CDC_ON_BOOT = False ,default Serial input & output data from IO43,IO44
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Serial.begin(115200);
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// Remap the input and output of Serial1
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Serial1.begin(9600, SERIAL_8N1, rx1_pin, tx1_pin);
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// Remap the input and output of Serial2
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Serial2.begin(9600, SERIAL_8N1, rx2_pin, tx2_pin);
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}
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void loop()
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{
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while (Serial1.available()) {
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Serial.write(Serial1.read());
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}
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while (Serial2.available()) {
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Serial.write(Serial2.read());
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}
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while (Serial.available()) {
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Serial1.write(Serial.read());
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}
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delay(1);
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} |