Add bluetooth low energy mode. Change partitions table.

lib/BluetoothSerial/BluetoothSerial.h

@@ -0,0 +1,75 @@
+#ifndef _BLUETOOTH_SERIAL_H_
+#define _BLUETOOTH_SERIAL_H_
+
+#include "sdkconfig.h"
+
+#if defined(CONFIG_BT_ENABLED) && defined(CONFIG_BLUEDROID_ENABLED)
+
+#include "Arduino.h"
+#include "Stream.h"
+#include <esp_gap_bt_api.h>
+#include <esp_spp_api.h>
+#include <functional>
+#include "BTScan.h"
+
+typedef std::function<void(const uint8_t *buffer, size_t size)> BluetoothSerialDataCb;
+typedef std::function<void(uint32_t num_val)> ConfirmRequestCb;
+typedef std::function<void(boolean success)> AuthCompleteCb;
+typedef std::function<void(BTAdvertisedDevice* pAdvertisedDevice)> BTAdvertisedDeviceCb;
+
+class BluetoothSerial: public Stream
+{
+    public:
+
+        BluetoothSerial(void);
+        ~BluetoothSerial(void);
+
+        bool begin(String localName=String(), bool isMaster=false, uint16_t rxQueueSize = 512 * 2, uint16_t txQueueSize = 512);
+        bool begin(unsigned long baud){//compatibility
+            return begin();
+        }
+        int available(void);
+        int peek(void);
+        bool hasClient(void);
+        int read(void);
+        size_t write(uint8_t c);
+        size_t write(const uint8_t *buffer, size_t size);
+        void flush();
+        void end(void);
+        void onData(BluetoothSerialDataCb cb);
+        esp_err_t register_callback(esp_spp_cb_t callback);
+        
+        void onConfirmRequest(ConfirmRequestCb cb);
+        void onAuthComplete(AuthCompleteCb cb);
+        void confirmReply(boolean confirm);
+
+        void enableSSP();
+        bool setPin(const char *pin);
+        bool connect(String remoteName);
+        bool connect(uint8_t remoteAddress[]);
+        bool connect();
+        bool connected(int timeout=0);
+        bool isReady(bool checkMaster=false, int timeout=0);
+        bool disconnect();
+        bool unpairDevice(uint8_t remoteAddress[]);
+
+        BTScanResults* discover(int timeout=0x30*1280);
+        bool discoverAsync(BTAdvertisedDeviceCb cb, int timeout=0x30*1280);
+        void discoverAsyncStop();
+        void discoverClear();
+        BTScanResults* getScanResults();
+        
+        const int INQ_TIME = 1280;   // Inquire Time unit 1280 ms
+        const int MIN_INQ_TIME = (ESP_BT_GAP_MIN_INQ_LEN * INQ_TIME);
+        const int MAX_INQ_TIME = (ESP_BT_GAP_MAX_INQ_LEN * INQ_TIME);
+        
+        operator bool() const;
+
+    private:
+        String local_name;
+
+};
+
+#endif
+
+#endif