Diff: source/bluetooth/MicroBitAnimationService.cpp

Revision:

80:74afcabdc9a1

Parent:

77:9909cbcd0ece

Child:

82:91e085d6ad72

--- a/source/bluetooth/MicroBitAnimationService.cpp	Thu Jan 05 10:29:03 2017 +0000
+++ b/source/bluetooth/MicroBitAnimationService.cpp	Mon Feb 06 09:41:10 2017 +0000
@@ -41,35 +41,57 @@
 MicroBitAnimationService::MicroBitAnimationService(BLEDevice &_ble) :
         ble(_ble)
 {
-    // TODO: Three GattCharacteristic objects. UUID, valuePTR, length, max length, properties.
-
+    // UUID, valuePTR, length, max length, properties
+    GattCharacteristic  animationTypeCharacteristic(
+        MicroBitAnimationServiceAnimationTypeCharacteristicUUID, 
+        (uint8_t *)animation_type_buffer, 
+        1, 
+        1,
+        GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE);
+        
+    GattCharacteristic  animationStatusCharacteristic(
+        MicroBitAnimationServiceAnimationStatusCharacteristicUUID, 
+        (uint8_t *)animation_status_buffer, 
+        1, 
+        1,
+        GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
 
-    // TODO: initialise characteristic value buffers
+    GattCharacteristic  animationControlCharacteristic(
+        MicroBitAnimationServiceAnimationControlCharacteristicUUID, 
+        (uint8_t *)animation_control_buffer, 
+        1, 
+        1,
+        GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE);
 
-
+    animation_type_buffer[0]    = 0x00;
+    animation_status_buffer[0]  = 0x00;
+    animation_control_buffer[0] = 0x00;
 
     // Set default security requirements - optional
     // animationTypeCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
     // animationStatusCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
     // animationControlCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
 
-    // TODO: create GattService containing the three characteristics
     // create an array of our characteristics so we can pass them to the service when we create it
+    GattCharacteristic *characteristics[] = {&animationTypeCharacteristic, &animationStatusCharacteristic, &animationControlCharacteristic};
 
     // create the animation service and specify its characteristics
-
-
+    GattService         service(MicroBitAnimationServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
 
-    // TODO: add the service to the Bluetooth attribute table
-
+    // add the service to the Bluetooth attribute table
+    ble.addService(service);
 
-    // TODO: take a note of the handles of our new characteristics now that they're in the attribute table
-
+    // take a note of the handles of our new characteristics now that they're in the attribute table
+    animationTypeCharacteristicHandle = animationTypeCharacteristic.getValueHandle();
+    animationStatusCharacteristicHandle = animationStatusCharacteristic.getValueHandle();
+    animationControlCharacteristicHandle = animationControlCharacteristic.getValueHandle();
+    
+    ble.gattServer().write(animationTypeCharacteristicHandle, (const uint8_t *)&animation_type_buffer, sizeof(animation_type_buffer));
+    ble.gattServer().write(animationStatusCharacteristicHandle, (const uint8_t *)&animation_status_buffer, sizeof(animation_status_buffer));
+    ble.gattServer().write(animationControlCharacteristicHandle, (const uint8_t *)&animation_control_buffer, sizeof(animation_control_buffer));
 
-    // TODO: set the attribute table's characteristic values to the initialised buffer values    
-    
-
-    // TODO: register a callback function for when a characteristic is written to
+    // register a callback function for when a characteristic is written to
+    ble.onDataWritten(this, &MicroBitAnimationService::onDataWritten);
     
     // subscribe to animation status events so they can be notified to the connected client
     if (EventModel::defaultEventBus)
@@ -83,19 +105,28 @@
 void MicroBitAnimationService::onDataWritten(const GattWriteCallbackParams *params)
 {
    
-    // TODO: handle write to animation type characteristic
+    if (params->handle == animationTypeCharacteristicHandle && params->len >= 1) {
+        uint8_t *value = (uint8_t *)params->data;
+        uint16_t event_value = static_cast<uint16_t>(value[0]);
+        MicroBitEvent evt(ANIMATION_TYPE_EVENT, event_value);
+        return;
+    }
 
- 
-    // TODO: handle write to animation control characteristic
-
-
+    if (params->handle == animationControlCharacteristicHandle && params->len >= 1) {
+        uint8_t *value = (uint8_t *)params->data;
+        uint16_t event_value = static_cast<uint16_t>(value[0]);
+        MicroBitEvent evt(ANIMATION_CONTROL_EVENT, event_value);
+        return;
+    }
 }
 
 void MicroBitAnimationService::animationStatusUpdate(MicroBitEvent e)
 {
-    // TODO: notify connected client of change to the animation status characteristic
-
-
+    if (ble.getGapState().connected)
+    {
+        animation_status_buffer[0] = e.value;
+        ble.gattServer().notify(animationStatusCharacteristicHandle,(uint8_t *)animation_status_buffer, 1);
+    }
 }
 
 const uint8_t  MicroBitAnimationServiceUUID[] = {
@@ -112,4 +143,4 @@
 
 const uint8_t  MicroBitAnimationServiceAnimationControlCharacteristicUUID[] = {
     0xe9,0x5d,0xb8,0x4c,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
-};
+};
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