📝 Add Microchip Transparent UART

Author: leon0399

.github/workflows/platformio-ci.yml

@@ -21,6 +21,7 @@ jobs:
         os: [ ubuntu-latest ]
         example:
           - "SerialToSerialBLE"
+          - "SerialToSerial_TransparentUART"
         boards:
           - [ esp32dev, esp32-s3-devkitc-1, esp32-c3-devkitm-1 ]
         nimble: [ false, true ]

examples/SerialToSerialBLE_TransparentUART/SerialToSerialBLE_TransparentUART.ino

@@ -0,0 +1,45 @@
+#include <BLESerial.h>
+
+// FOR ETL: Uncomment the following lines
+// #include <Embedded_Template_Library.h>
+// #include <etl/queue.h>
+// #include <etl/circular_buffer.h>
+
+String device_name = "ESP32-BLE-Slave";
+
+BLESerial SerialBLE;
+// If you are using older version of Arduino IDE, you may need to use
+// empty template argument (<>), due to the old C++ compiler version (<=std=c++17).
+// https://www.cppreference.com/w/cpp/language/ctad.html
+//
+// Uncomment the line below if you are using an older version of Arduino IDE/C++ compiler
+// BLESerial<> SerialBLE;
+
+// FOR ETL: Uncomment one of the following lines
+// BLESerial<etl::queue<uint8_t, 255, etl::memory_model::MEMORY_MODEL_SMALL>> SerialBLE;
+// OR
+// BLESerial<etl::circular_buffer<uint8_t, 255>> SerialBLE;
+
+void setup() {
+    BLEDevice::init(device_name);
+    BLEServer* pServer = BLEDevice::createServer();
+
+    // Transparent UART Service
+    // https://developerhelp.microchip.com/xwiki/bin/view/applications/ble/android-development-for-bm70rn4870/transparent-uart-service-for-bm70rn4870/
+    auto pService = pServer->createService("49535343-FE7D-4AE5-8FA9-9FAFD205E455");
+
+    auto pRxCharacteristic = pService->createCharacteristic("49535343-1E4D-4BD9-BA61-23C647249616", BLECharacteristic::PROPERTY_WRITE | BLECharacteristic::PROPERTY_WRITE_NR | BLECharacteristic::PROPERTY_NOTIFY);
+    auto pTxCharacteristic = pService->createCharacteristic("49535343-8841-43F4-A8D4-ECBE34729BB3", BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY);
+
+    SerialBLE.begin(pRxCharacteristic, pTxCharacteristic);
+}
+
+void loop() {
+    if (Serial.available()) {
+        SerialBLE.write(Serial.read());
+        SerialBLE.flush();
+    }
+    if (SerialBLE.available()) {
+        Serial.write(SerialBLE.read());
+    }
+}