Kai Ren / BluetoothAsia2018Peripheral

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Dependencies:   microbit

Fork of BluetoothAsiaPeripheral by Kaiser Ren

peripheral_src.txt@5:e778ea479b18, 2018-03-14 (annotated)

Committer:
krenbluetoothsig
Date:
Wed Mar 14 09:20:50 2018 +0000
Revision:
5:e778ea479b18
Child:
6:f296b217bb4c
1. NEW: add peripheral_src.txt which includes peripheral session code snippet and guide.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
krenbluetoothsig 5:e778ea479b18 1 MicroBitAnimationService.h
krenbluetoothsig 5:e778ea479b18 2
krenbluetoothsig 5:e778ea479b18 3 // TODO: memory for our Animation characteristics.
krenbluetoothsig 5:e778ea479b18 4 uint8_t animation_type_buffer[1];
krenbluetoothsig 5:e778ea479b18 5 uint8_t animation_status_buffer[1];
krenbluetoothsig 5:e778ea479b18 6 uint8_t animation_control_buffer[1];
krenbluetoothsig 5:e778ea479b18 7 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 8
krenbluetoothsig 5:e778ea479b18 9 // TODO: handles on this service's characterisitics.
krenbluetoothsig 5:e778ea479b18 10 GattAttribute::Handle_t animationTypeCharacteristicHandle;
krenbluetoothsig 5:e778ea479b18 11 GattAttribute::Handle_t animationStatusCharacteristicHandle;
krenbluetoothsig 5:e778ea479b18 12 GattAttribute::Handle_t animationControlCharacteristicHandle;
krenbluetoothsig 5:e778ea479b18 13 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 14
krenbluetoothsig 5:e778ea479b18 15
krenbluetoothsig 5:e778ea479b18 16 MicroBitAnimationService.cpp
krenbluetoothsig 5:e778ea479b18 17 // TODO: Three GattCharacteristic objects. UUID, valuePTR, length, max length, properties.
krenbluetoothsig 5:e778ea479b18 18 GattCharacteristic animationTypeCharacteristic(
krenbluetoothsig 5:e778ea479b18 19 MicroBitAnimationServiceAnimationTypeCharacteristicUUID,
krenbluetoothsig 5:e778ea479b18 20 (uint8_t *)animation_type_buffer,
krenbluetoothsig 5:e778ea479b18 21 1,
krenbluetoothsig 5:e778ea479b18 22 1,
krenbluetoothsig 5:e778ea479b18 23 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE);
krenbluetoothsig 5:e778ea479b18 24
krenbluetoothsig 5:e778ea479b18 25 GattCharacteristic animationStatusCharacteristic(
krenbluetoothsig 5:e778ea479b18 26 MicroBitAnimationServiceAnimationStatusCharacteristicUUID,
krenbluetoothsig 5:e778ea479b18 27 (uint8_t *)animation_status_buffer,
krenbluetoothsig 5:e778ea479b18 28 1,
krenbluetoothsig 5:e778ea479b18 29 1,
krenbluetoothsig 5:e778ea479b18 30 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
krenbluetoothsig 5:e778ea479b18 31
krenbluetoothsig 5:e778ea479b18 32 GattCharacteristic animationControlCharacteristic(
krenbluetoothsig 5:e778ea479b18 33 MicroBitAnimationServiceAnimationControlCharacteristicUUID,
krenbluetoothsig 5:e778ea479b18 34 (uint8_t *)animation_control_buffer,
krenbluetoothsig 5:e778ea479b18 35 1,
krenbluetoothsig 5:e778ea479b18 36 1,
krenbluetoothsig 5:e778ea479b18 37 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE);
krenbluetoothsig 5:e778ea479b18 38 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 39
krenbluetoothsig 5:e778ea479b18 40 // TODO: initialise characteristic value buffers.
krenbluetoothsig 5:e778ea479b18 41 animation_type_buffer[0] = 0x00;
krenbluetoothsig 5:e778ea479b18 42 animation_status_buffer[0] = 0x00;
krenbluetoothsig 5:e778ea479b18 43 animation_control_buffer[0] = 0x00;
krenbluetoothsig 5:e778ea479b18 44 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 45
krenbluetoothsig 5:e778ea479b18 46 // TODO: create GattService containing the three characteristics
krenbluetoothsig 5:e778ea479b18 47 // create an array of our characteristics so we can pass them to the service when we create it
krenbluetoothsig 5:e778ea479b18 48 GattCharacteristic *characteristics[] = {&animationTypeCharacteristic, &animationStatusCharacteristic, &animationControlCharacteristic};
krenbluetoothsig 5:e778ea479b18 49
krenbluetoothsig 5:e778ea479b18 50 // create the animation service and specify its characteristics. 3rd arg is the number of characteristics.
krenbluetoothsig 5:e778ea479b18 51 GattService service(MicroBitAnimationServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
krenbluetoothsig 5:e778ea479b18 52 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 53
krenbluetoothsig 5:e778ea479b18 54 // TODO: add the service to the Bluetooth attribute table
krenbluetoothsig 5:e778ea479b18 55 ble.addService(service);
krenbluetoothsig 5:e778ea479b18 56 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 57
krenbluetoothsig 5:e778ea479b18 58 // TODO: take a note of the handles of our new characteristics now that they're in the attribute table
krenbluetoothsig 5:e778ea479b18 59 animationTypeCharacteristicHandle = animationTypeCharacteristic.getValueHandle();
krenbluetoothsig 5:e778ea479b18 60 animationStatusCharacteristicHandle = animationStatusCharacteristic.getValueHandle();
krenbluetoothsig 5:e778ea479b18 61 animationControlCharacteristicHandle = animationControlCharacteristic.getValueHandle();
krenbluetoothsig 5:e778ea479b18 62 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 63
krenbluetoothsig 5:e778ea479b18 64 // TODO: register a callback function for when a characteristic is written to
krenbluetoothsig 5:e778ea479b18 65 ble.onDataWritten(this, &MicroBitAnimationService::onDataWritten);
krenbluetoothsig 5:e778ea479b18 66 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 67
krenbluetoothsig 5:e778ea479b18 68 /**
krenbluetoothsig 5:e778ea479b18 69 * Callback. Invoked when any of our attributes are written to
krenbluetoothsig 5:e778ea479b18 70 */
krenbluetoothsig 5:e778ea479b18 71 void MicroBitAnimationService::onDataWritten(const GattWriteCallbackParams *params)
krenbluetoothsig 5:e778ea479b18 72 {
krenbluetoothsig 5:e778ea479b18 73
krenbluetoothsig 5:e778ea479b18 74 // TODO: handle write to animation type characteristic
krenbluetoothsig 5:e778ea479b18 75 if (params->handle == animationTypeCharacteristicHandle && params->len == 1) {
krenbluetoothsig 5:e778ea479b18 76 uint8_t *value = (uint8_t *)params->data;
krenbluetoothsig 5:e778ea479b18 77 uint16_t event_value = static_cast<uint16_t>(value[0]);
krenbluetoothsig 5:e778ea479b18 78 MicroBitEvent evt(ANIMATION_TYPE_EVENT, event_value);
krenbluetoothsig 5:e778ea479b18 79 return;
krenbluetoothsig 5:e778ea479b18 80 }
krenbluetoothsig 5:e778ea479b18 81
krenbluetoothsig 5:e778ea479b18 82 // TODO: handle write to animation control characteristic
krenbluetoothsig 5:e778ea479b18 83 if (params->handle == animationControlCharacteristicHandle && params->len == 1) {
krenbluetoothsig 5:e778ea479b18 84 uint8_t *value = (uint8_t *)params->data;
krenbluetoothsig 5:e778ea479b18 85 uint16_t event_value = static_cast<uint16_t>(value[0]);
krenbluetoothsig 5:e778ea479b18 86 MicroBitEvent evt(ANIMATION_CONTROL_EVENT, event_value);
krenbluetoothsig 5:e778ea479b18 87 return;
krenbluetoothsig 5:e778ea479b18 88 }
krenbluetoothsig 5:e778ea479b18 89 }
krenbluetoothsig 5:e778ea479b18 90 ctrl+S then ctrl+B
krenbluetoothsig 5:e778ea479b18 91
krenbluetoothsig 5:e778ea479b18 92 void MicroBitAnimationService::animationStatusUpdate(MicroBitEvent e)
krenbluetoothsig 5:e778ea479b18 93 {
krenbluetoothsig 5:e778ea479b18 94 // TODO: notify connected client of change to the animation status characteristic
krenbluetoothsig 5:e778ea479b18 95 if (ble.getGapState().connected)
krenbluetoothsig 5:e778ea479b18 96 {
krenbluetoothsig 5:e778ea479b18 97 animation_status_buffer[0] = e.value;
krenbluetoothsig 5:e778ea479b18 98 ble.gattServer().notify(animationStatusCharacteristicHandle,(uint8_t *)animation_status_buffer, 1);
krenbluetoothsig 5:e778ea479b18 99 }
krenbluetoothsig 5:e778ea479b18 100 }
krenbluetoothsig 5:e778ea479b18 101 ctrl+S then ctrl+B