Diff: microbit/microbit-dal/source/bluetooth/MicroBitButtonService.cpp

Revision:

0:b9164b348919

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/microbit/microbit-dal/source/bluetooth/MicroBitButtonService.cpp	Mon Oct 17 12:41:20 2016 +0000
@@ -0,0 +1,143 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 British Broadcasting Corporation.
+This software is provided by Lancaster University by arrangement with the BBC.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+*/
+
+/**
+  * Class definition for the custom MicroBit Button Service.
+  * Provides a BLE service to remotely read the state of each button, and configure its behaviour.
+  */
+#include "MicroBitConfig.h"
+#include "ble/UUID.h"
+
+#include "MicroBitButtonService.h"
+#include "MicroBitButton.h"
+
+/**
+  * Constructor.
+  * Create a representation of the ButtonService
+  * @param _ble The instance of a BLE device that we're running on.
+  */
+MicroBitButtonService::MicroBitButtonService(BLEDevice &_ble) :
+        ble(_ble)
+{
+    // Create the data structures that represent each of our characteristics in Soft Device.
+    GattCharacteristic  buttonADataCharacteristic(MicroBitButtonAServiceDataUUID, (uint8_t *)&buttonADataCharacteristicBuffer, 0,
+    sizeof(buttonADataCharacteristicBuffer), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
+
+    GattCharacteristic  buttonBDataCharacteristic(MicroBitButtonBServiceDataUUID, (uint8_t *)&buttonBDataCharacteristicBuffer, 0,
+    sizeof(buttonBDataCharacteristicBuffer), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
+
+
+    // Initialise our characteristic values.
+    buttonADataCharacteristicBuffer = 0;
+    buttonBDataCharacteristicBuffer = 0;
+
+    // Set default security requirements
+    buttonADataCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
+    buttonBDataCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
+
+    GattCharacteristic *characteristics[] = {&buttonADataCharacteristic, &buttonBDataCharacteristic};
+    GattService         service(MicroBitButtonServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
+
+    ble.addService(service);
+
+    buttonADataCharacteristicHandle = buttonADataCharacteristic.getValueHandle();
+    buttonBDataCharacteristicHandle = buttonBDataCharacteristic.getValueHandle();
+
+    ble.gattServer().write(buttonADataCharacteristicHandle,(uint8_t *)&buttonADataCharacteristicBuffer, sizeof(buttonADataCharacteristicBuffer));
+    ble.gattServer().write(buttonBDataCharacteristicHandle,(uint8_t *)&buttonBDataCharacteristicBuffer, sizeof(buttonBDataCharacteristicBuffer));
+
+    if (EventModel::defaultEventBus)
+    {
+        EventModel::defaultEventBus->listen(MICROBIT_ID_BUTTON_A, MICROBIT_EVT_ANY, this, &MicroBitButtonService::buttonAUpdate, MESSAGE_BUS_LISTENER_IMMEDIATE);
+        EventModel::defaultEventBus->listen(MICROBIT_ID_BUTTON_B, MICROBIT_EVT_ANY, this, &MicroBitButtonService::buttonBUpdate, MESSAGE_BUS_LISTENER_IMMEDIATE);
+    }
+}
+
+
+/**
+  * Button B update callback
+  */
+void MicroBitButtonService::buttonAUpdate(MicroBitEvent e)
+{
+    if (ble.getGapState().connected)
+    {
+        if (e.value == MICROBIT_BUTTON_EVT_UP)
+        {
+            buttonADataCharacteristicBuffer = 0;
+            ble.gattServer().notify(buttonADataCharacteristicHandle,(uint8_t *)&buttonADataCharacteristicBuffer, sizeof(buttonADataCharacteristicBuffer));
+        }
+
+        if (e.value == MICROBIT_BUTTON_EVT_DOWN)
+        {
+            buttonADataCharacteristicBuffer = 1;
+            ble.gattServer().notify(buttonADataCharacteristicHandle,(uint8_t *)&buttonADataCharacteristicBuffer, sizeof(buttonADataCharacteristicBuffer));
+        }
+
+        if (e.value == MICROBIT_BUTTON_EVT_HOLD)
+        {
+            buttonADataCharacteristicBuffer = 2;
+            ble.gattServer().notify(buttonADataCharacteristicHandle,(uint8_t *)&buttonADataCharacteristicBuffer, sizeof(buttonADataCharacteristicBuffer));
+        }
+    }
+}
+
+/**
+  * Button A update callback
+  */
+void MicroBitButtonService::buttonBUpdate(MicroBitEvent e)
+{
+    if (ble.getGapState().connected)
+    {
+        if (e.value == MICROBIT_BUTTON_EVT_UP)
+        {
+            buttonBDataCharacteristicBuffer = 0;
+            ble.gattServer().notify(buttonBDataCharacteristicHandle,(uint8_t *)&buttonBDataCharacteristicBuffer, sizeof(buttonBDataCharacteristicBuffer));
+        }
+
+        if (e.value == MICROBIT_BUTTON_EVT_DOWN)
+        {
+            buttonBDataCharacteristicBuffer = 1;
+            ble.gattServer().notify(buttonBDataCharacteristicHandle,(uint8_t *)&buttonBDataCharacteristicBuffer, sizeof(buttonBDataCharacteristicBuffer));
+        }
+
+        if (e.value == MICROBIT_BUTTON_EVT_HOLD)
+        {
+            buttonBDataCharacteristicBuffer = 2;
+            ble.gattServer().notify(buttonBDataCharacteristicHandle,(uint8_t *)&buttonBDataCharacteristicBuffer, sizeof(buttonBDataCharacteristicBuffer));
+        }
+    }
+}
+
+const uint8_t  MicroBitButtonServiceUUID[] = {
+    0xe9,0x5d,0x98,0x82,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
+};
+
+const uint8_t  MicroBitButtonAServiceDataUUID[] = {
+    0xe9,0x5d,0xda,0x90,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
+}
+;
+const uint8_t  MicroBitButtonBServiceDataUUID[] = {
+    0xe9,0x5d,0xda,0x91,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
+};
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