ble-UartService
Fork of mbed-os-example-ble-UartService by
BLE UART Service - USB Serial Relay
source/main.cpp@0:fb66cae3e9a1, 2016-07-26 (annotated)
- Committer:
- Vincent Coubard
- Date:
- Tue Jul 26 14:45:32 2016 +0100
- Revision:
- 0:fb66cae3e9a1
- Child:
- 1:72c60abef7e7
Update example at tag mbed-os-5.0.1-rc1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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Vincent Coubard |
0:fb66cae3e9a1 | 1 | /* mbed Microcontroller Library |
Vincent Coubard |
0:fb66cae3e9a1 | 2 | * Copyright (c) 2006-2015 ARM Limited |
Vincent Coubard |
0:fb66cae3e9a1 | 3 | * |
Vincent Coubard |
0:fb66cae3e9a1 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
Vincent Coubard |
0:fb66cae3e9a1 | 5 | * you may not use this file except in compliance with the License. |
Vincent Coubard |
0:fb66cae3e9a1 | 6 | * You may obtain a copy of the License at |
Vincent Coubard |
0:fb66cae3e9a1 | 7 | * |
Vincent Coubard |
0:fb66cae3e9a1 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Vincent Coubard |
0:fb66cae3e9a1 | 9 | * |
Vincent Coubard |
0:fb66cae3e9a1 | 10 | * Unless required by applicable law or agreed to in writing, software |
Vincent Coubard |
0:fb66cae3e9a1 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
Vincent Coubard |
0:fb66cae3e9a1 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
Vincent Coubard |
0:fb66cae3e9a1 | 13 | * See the License for the specific language governing permissions and |
Vincent Coubard |
0:fb66cae3e9a1 | 14 | * limitations under the License. |
Vincent Coubard |
0:fb66cae3e9a1 | 15 | */ |
Vincent Coubard |
0:fb66cae3e9a1 | 16 | |
Vincent Coubard |
0:fb66cae3e9a1 | 17 | #include <mbed-events/events.h> |
Vincent Coubard |
0:fb66cae3e9a1 | 18 | #include <mbed.h> |
Vincent Coubard |
0:fb66cae3e9a1 | 19 | #include "ble/BLE.h" |
Vincent Coubard |
0:fb66cae3e9a1 | 20 | #include "ble/Gap.h" |
Vincent Coubard |
0:fb66cae3e9a1 | 21 | #include "ble/services/HeartRateService.h" |
Vincent Coubard |
0:fb66cae3e9a1 | 22 | |
Vincent Coubard |
0:fb66cae3e9a1 | 23 | DigitalOut led1(LED1, 1); |
Vincent Coubard |
0:fb66cae3e9a1 | 24 | |
Vincent Coubard |
0:fb66cae3e9a1 | 25 | const static char DEVICE_NAME[] = "HRM"; |
Vincent Coubard |
0:fb66cae3e9a1 | 26 | static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE}; |
Vincent Coubard |
0:fb66cae3e9a1 | 27 | |
Vincent Coubard |
0:fb66cae3e9a1 | 28 | static uint8_t hrmCounter = 100; // init HRM to 100bps |
Vincent Coubard |
0:fb66cae3e9a1 | 29 | static HeartRateService *hrServicePtr; |
Vincent Coubard |
0:fb66cae3e9a1 | 30 | |
Vincent Coubard |
0:fb66cae3e9a1 | 31 | static EventQueue eventQueue( |
Vincent Coubard |
0:fb66cae3e9a1 | 32 | /* event count */ 16 * /* event size */ 32 |
Vincent Coubard |
0:fb66cae3e9a1 | 33 | ); |
Vincent Coubard |
0:fb66cae3e9a1 | 34 | |
Vincent Coubard |
0:fb66cae3e9a1 | 35 | void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) |
Vincent Coubard |
0:fb66cae3e9a1 | 36 | { |
Vincent Coubard |
0:fb66cae3e9a1 | 37 | BLE::Instance().gap().startAdvertising(); // restart advertising |
Vincent Coubard |
0:fb66cae3e9a1 | 38 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 39 | |
Vincent Coubard |
0:fb66cae3e9a1 | 40 | void updateSensorValue() { |
Vincent Coubard |
0:fb66cae3e9a1 | 41 | // Do blocking calls or whatever is necessary for sensor polling. |
Vincent Coubard |
0:fb66cae3e9a1 | 42 | // In our case, we simply update the HRM measurement. |
Vincent Coubard |
0:fb66cae3e9a1 | 43 | hrmCounter++; |
Vincent Coubard |
0:fb66cae3e9a1 | 44 | |
Vincent Coubard |
0:fb66cae3e9a1 | 45 | // 100 <= HRM bps <=175 |
Vincent Coubard |
0:fb66cae3e9a1 | 46 | if (hrmCounter == 175) { |
Vincent Coubard |
0:fb66cae3e9a1 | 47 | hrmCounter = 100; |
Vincent Coubard |
0:fb66cae3e9a1 | 48 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 49 | |
Vincent Coubard |
0:fb66cae3e9a1 | 50 | hrServicePtr->updateHeartRate(hrmCounter); |
Vincent Coubard |
0:fb66cae3e9a1 | 51 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 52 | |
Vincent Coubard |
0:fb66cae3e9a1 | 53 | void periodicCallback(void) |
Vincent Coubard |
0:fb66cae3e9a1 | 54 | { |
Vincent Coubard |
0:fb66cae3e9a1 | 55 | led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ |
Vincent Coubard |
0:fb66cae3e9a1 | 56 | |
Vincent Coubard |
0:fb66cae3e9a1 | 57 | if (BLE::Instance().getGapState().connected) { |
Vincent Coubard |
0:fb66cae3e9a1 | 58 | eventQueue.post(updateSensorValue); |
Vincent Coubard |
0:fb66cae3e9a1 | 59 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 60 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 61 | |
Vincent Coubard |
0:fb66cae3e9a1 | 62 | void onBleInitError(BLE &ble, ble_error_t error) |
Vincent Coubard |
0:fb66cae3e9a1 | 63 | { |
Vincent Coubard |
0:fb66cae3e9a1 | 64 | (void)ble; |
Vincent Coubard |
0:fb66cae3e9a1 | 65 | (void)error; |
Vincent Coubard |
0:fb66cae3e9a1 | 66 | /* Initialization error handling should go here */ |
Vincent Coubard |
0:fb66cae3e9a1 | 67 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 68 | |
Vincent Coubard |
0:fb66cae3e9a1 | 69 | void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) |
Vincent Coubard |
0:fb66cae3e9a1 | 70 | { |
Vincent Coubard |
0:fb66cae3e9a1 | 71 | BLE& ble = params->ble; |
Vincent Coubard |
0:fb66cae3e9a1 | 72 | ble_error_t error = params->error; |
Vincent Coubard |
0:fb66cae3e9a1 | 73 | |
Vincent Coubard |
0:fb66cae3e9a1 | 74 | if (error != BLE_ERROR_NONE) { |
Vincent Coubard |
0:fb66cae3e9a1 | 75 | onBleInitError(ble, error); |
Vincent Coubard |
0:fb66cae3e9a1 | 76 | return; |
Vincent Coubard |
0:fb66cae3e9a1 | 77 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 78 | |
Vincent Coubard |
0:fb66cae3e9a1 | 79 | if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { |
Vincent Coubard |
0:fb66cae3e9a1 | 80 | return; |
Vincent Coubard |
0:fb66cae3e9a1 | 81 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 82 | |
Vincent Coubard |
0:fb66cae3e9a1 | 83 | ble.gap().onDisconnection(disconnectionCallback); |
Vincent Coubard |
0:fb66cae3e9a1 | 84 | |
Vincent Coubard |
0:fb66cae3e9a1 | 85 | /* Setup primary service. */ |
Vincent Coubard |
0:fb66cae3e9a1 | 86 | hrServicePtr = new HeartRateService(ble, hrmCounter, HeartRateService::LOCATION_FINGER); |
Vincent Coubard |
0:fb66cae3e9a1 | 87 | |
Vincent Coubard |
0:fb66cae3e9a1 | 88 | /* Setup advertising. */ |
Vincent Coubard |
0:fb66cae3e9a1 | 89 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
Vincent Coubard |
0:fb66cae3e9a1 | 90 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
Vincent Coubard |
0:fb66cae3e9a1 | 91 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR); |
Vincent Coubard |
0:fb66cae3e9a1 | 92 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
Vincent Coubard |
0:fb66cae3e9a1 | 93 | ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
Vincent Coubard |
0:fb66cae3e9a1 | 94 | ble.gap().setAdvertisingInterval(1000); /* 1000ms */ |
Vincent Coubard |
0:fb66cae3e9a1 | 95 | ble.gap().startAdvertising(); |
Vincent Coubard |
0:fb66cae3e9a1 | 96 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 97 | |
Vincent Coubard |
0:fb66cae3e9a1 | 98 | void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) { |
Vincent Coubard |
0:fb66cae3e9a1 | 99 | BLE &ble = BLE::Instance(); |
Vincent Coubard |
0:fb66cae3e9a1 | 100 | eventQueue.post(Callback<void()>(&ble, &BLE::processEvents)); |
Vincent Coubard |
0:fb66cae3e9a1 | 101 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 102 | |
Vincent Coubard |
0:fb66cae3e9a1 | 103 | int main() |
Vincent Coubard |
0:fb66cae3e9a1 | 104 | { |
Vincent Coubard |
0:fb66cae3e9a1 | 105 | eventQueue.post_every(periodicCallback, 500); |
Vincent Coubard |
0:fb66cae3e9a1 | 106 | |
Vincent Coubard |
0:fb66cae3e9a1 | 107 | BLE &ble = BLE::Instance(); |
Vincent Coubard |
0:fb66cae3e9a1 | 108 | ble.onEventsToProcess(scheduleBleEventsProcessing); |
Vincent Coubard |
0:fb66cae3e9a1 | 109 | ble.init(bleInitComplete); |
Vincent Coubard |
0:fb66cae3e9a1 | 110 | |
Vincent Coubard |
0:fb66cae3e9a1 | 111 | while (true) { |
Vincent Coubard |
0:fb66cae3e9a1 | 112 | eventQueue.dispatch(); |
Vincent Coubard |
0:fb66cae3e9a1 | 113 | } |
Vincent Coubard |
0:fb66cae3e9a1 | 114 | |
Vincent Coubard |
0:fb66cae3e9a1 | 115 | return 0; |
Vincent Coubard |
0:fb66cae3e9a1 | 116 | } |