Diff: BlynkSimpleMicroBit.h

Revision:

15:975b60f7a8ff

Child:

16:6d9bf99b263c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BlynkSimpleMicroBit.h	Mon Nov 27 19:48:07 2017 +0200
@@ -0,0 +1,157 @@
+/**
+ * @file       BlynkSimpleRedBearLab_BLE_Nano.h
+ * @author     Volodymyr Shymanskyy
+ * @license    This project is released under the MIT License (MIT)
+ * @copyright  Copyright (c) 2015 Volodymyr Shymanskyy
+ * @date       May 2016
+ * @brief
+ *
+ */
+
+#ifndef BlynkSimpleRedBearLab_BLE_Nano_h
+#define BlynkSimpleRedBearLab_BLE_Nano_h
+
+#ifndef BLYNK_INFO_CONNECTION
+#define BLYNK_INFO_CONNECTION "MicroBit"
+#endif
+
+#define BLYNK_SEND_ATOMIC
+#define BLYNK_SEND_CHUNK 20
+#define BLYNK_SEND_THROTTLE 20
+
+#include <BlynkApiMbed.h>
+#include <Blynk/BlynkProtocol.h>
+#include <utility/BlynkFifo2.h>
+#include <ble/BLE.h>
+
+/*
+ * The Nordic UART Service
+ */
+static const uint8_t uart_base_uuid[]     = {0x71, 0x3D, 0, 0, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+static const uint8_t uart_base_uuid_rev[] = {0x1E, 0x94, 0x8D, 0xF1, 0x48, 0x31, 0x94, 0xBA, 0x75, 0x4C, 0x3E, 0x50, 0, 0, 0x3D, 0x71};
+static const uint8_t uart_tx_uuid[]       = {0x71, 0x3D, 0, 3, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+static const uint8_t uart_rx_uuid[]       = {0x71, 0x3D, 0, 2, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+
+#define TXRX_BUF_LEN 20
+uint8_t txPayload[TXRX_BUF_LEN] = {0,};
+uint8_t rxPayload[TXRX_BUF_LEN] = {0,};
+
+GattCharacteristic  txCharacteristic (uart_tx_uuid, txPayload, 1, TXRX_BUF_LEN,
+                                      GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE |
+                                      GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE);
+
+GattCharacteristic  rxCharacteristic (uart_rx_uuid, rxPayload, 1, TXRX_BUF_LEN,
+                                      GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
+
+GattCharacteristic *uartChars[] = {&txCharacteristic, &rxCharacteristic};
+
+GattService         uartService(uart_base_uuid, uartChars, sizeof(uartChars) / sizeof(GattCharacteristic*));
+
+class BlynkTransportMicroBit
+{
+public:
+    BlynkTransportMicroBit()
+        : mConn (false)
+    {}
+
+    // IP redirect not available
+    void begin(char* h, uint16_t p) {}
+
+    void begin(BLEDevice& bleDevice) {
+        ble = &bleDevice;
+
+        ble->gattServer().addService(uartService);
+        ble->gattServer().onDataWritten(this, &BlynkTransportMicroBit::writeCallback);
+        ble->gattServer().onDataSent(this, &BlynkTransportMicroBit::sentCallback);
+
+        // Setup advertising
+        ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
+                                              uart_base_uuid_rev, sizeof(uart_base_uuid));
+    }
+
+    bool connect() {
+        mBuffRX.clear();
+        return mConn = true;
+    }
+
+    void disconnect() {
+        mConn = false;
+    }
+
+    bool connected() {
+        return mConn;
+    }
+
+    size_t read(void* buf, size_t len) {
+        uint32_t start = millis();
+        while (millis() - start < BLYNK_TIMEOUT_MS) {
+            if (available() < len) {
+                ble->waitForEvent();
+            } else {
+                break;
+            }
+        }
+        noInterrupts();
+        size_t res = mBuffRX.get((uint8_t*)buf, len);
+        interrupts();
+        return res;
+    }
+
+    size_t write(const void* buf, size_t len) {
+        ble->updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), (uint8_t*)buf, len);
+        return len;
+    }
+
+    size_t available() {
+        noInterrupts();
+        size_t rxSize = mBuffRX.size();
+        interrupts();
+        return rxSize;
+    }
+
+private:
+
+    void writeCallback(const GattWriteCallbackParams *params)
+    {
+        noInterrupts();
+        //BLYNK_DBG_DUMP(">> ", params->data, params->len);
+        mBuffRX.put(params->data, params->len);
+        interrupts();
+    }
+
+    void sentCallback(unsigned count)
+    {
+        //Serial.print("SENT: ");
+        //Serial.println(count);
+    }
+
+private:
+    bool mConn;
+    BLEDevice* ble;
+
+    BlynkFifo<uint8_t, BLYNK_MAX_READBYTES*2> mBuffRX;
+};
+
+class BlynkMicroBit
+    : public BlynkProtocol<BlynkTransportMicroBit>
+{
+    typedef BlynkProtocol<BlynkTransportMicroBit> Base;
+public:
+    BlynkMicroBit(BlynkTransportMicroBit& transp)
+        : Base(transp)
+    {}
+
+    void begin(BLEDevice& ble, const char* auth)
+    {
+        Base::begin(auth);
+        state = DISCONNECTED;
+        conn.begin(ble);
+    }
+};
+
+static BlynkTransportMicroBit _blynkTransport;
+BlynkMicroBit Blynk(_blynkTransport);
+
+#include <BlynkWidgets.h>
+
+#endif