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T-Display-S3-main/example/SerialExample/SerialExample.ino

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