Create BLE-MIDI_Client_ESP32.h

For pull request only

Author: RobertoHE

src/hardware/BLE-MIDI_Client_ESP32.h

@@ -0,0 +1,100 @@
+#pragma once
+
+// Headers for ESP32 BLE
+#include <BLEDevice.h>
+#include <BLEUtils.h>
+#include <BLEServer.h>
+#include <BLE2902.h>
+
+BEGIN_BLEMIDI_NAMESPACE
+
+class BLEMIDI_Client_ESP32
+{
+private:
+    BLEClient*			_client = nullptr;
+        
+	BLEMIDI<class BLEMIDI_Client_ESP32>* _bleMidiTransport = nullptr;
+
+public:
+	BLEMIDI_Client_ESP32()
+    {
+    }
+    
+	bool begin(const char*, BLEMIDI<class BLEMIDI_Client_ESP32>*);
+
+    void end() 
+    {
+        
+    }
+        
+    void write(uint8_t* data, uint8_t length)
+    {
+        _characteristic->setValue(data, length);
+        _characteristic->notify();
+    }
+    
+	void receive(uint8_t* buffer, size_t length)
+	{
+        // Post the items to the back of the queue
+        // (drop the first 2 items)
+        for (size_t i = 2; i < length; i++)
+            xQueueSend(_bleMidiTransport->mRxQueue, &buffer[i], portMAX_DELAY);
+	}
+
+	void connected()
+	{
+		if (_bleMidiTransport->_connectedCallback)
+			_bleMidiTransport->_connectedCallback();
+	}
+
+	void disconnected()
+	{
+		if (_bleMidiTransport->_disconnectedCallback)
+			_bleMidiTransport->_disconnectedCallback();
+	}
+};
+
+class MyClientCallbacks: public BLEClientCallbacks {
+public:
+    MyClientCallbacks(BLEMIDI_Client_ESP32* bluetoothEsp32)
+        : _bluetoothEsp32(bluetoothEsp32) {
+    }
+
+protected:
+	BLEMIDI_Client_ESP32* _bluetoothEsp32 = nullptr;
+
+    void onConnect(BLEClient*) {
+        if (_bluetoothEsp32)
+            _bluetoothEsp32->connected();
+    };
+    
+    void onDisconnect(BLEClient*) {
+        if (_bluetoothEsp32)
+            _bluetoothEsp32->disconnected();
+	}
+};
+
+bool BLEMIDI_Client_ESP32::begin(const char* deviceName, BLEMIDI<class BLEMIDI_ESP32>* bleMidiTransport)
+{
+	_bleMidiTransport = bleMidiTransport;
+
+    BLEDevice::init(deviceName);
+    
+    _client = BLEDevice::createClient();
+    _client->setCallbacks(new MyClientCallbacks(this));
+    
+     // Retrieve a Scanner and set the callback we want to use to be informed when we
+    // have detected a new device.  Specify that we want active scanning and start the
+    // scan to run for 5 seconds.
+    pBLEScan = BLEDevice::getScan();
+    pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks(this));
+    pBLEScan->setInterval(1349);
+    pBLEScan->setWindow(449);
+    pBLEScan->setActiveScan(true);
+    doScan = true;
+    pBLEScan->start(10, scanCompleteCB);
+
+    return true;
+}
+
+END_BLEMIDI_NAMESPACE