Combines a working system to save force, acceleration and gyro data to an SD card in a MAX32630 with BLE_Heartrate taken from the mbed site.
Dependencies: USBMSD_BD BMI160 HX711 max32630fthr USBDevice
Diff: source/main.cpp
- Revision:
- 0:fb66cae3e9a1
- Child:
- 1:72c60abef7e7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/main.cpp Tue Jul 26 14:45:32 2016 +0100 @@ -0,0 +1,116 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2015 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <mbed-events/events.h> +#include <mbed.h> +#include "ble/BLE.h" +#include "ble/Gap.h" +#include "ble/services/HeartRateService.h" + +DigitalOut led1(LED1, 1); + +const static char DEVICE_NAME[] = "HRM"; +static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE}; + +static uint8_t hrmCounter = 100; // init HRM to 100bps +static HeartRateService *hrServicePtr; + +static EventQueue eventQueue( + /* event count */ 16 * /* event size */ 32 +); + +void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) +{ + BLE::Instance().gap().startAdvertising(); // restart advertising +} + +void updateSensorValue() { + // Do blocking calls or whatever is necessary for sensor polling. + // In our case, we simply update the HRM measurement. + hrmCounter++; + + // 100 <= HRM bps <=175 + if (hrmCounter == 175) { + hrmCounter = 100; + } + + hrServicePtr->updateHeartRate(hrmCounter); +} + +void periodicCallback(void) +{ + led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ + + if (BLE::Instance().getGapState().connected) { + eventQueue.post(updateSensorValue); + } +} + +void onBleInitError(BLE &ble, ble_error_t error) +{ + (void)ble; + (void)error; + /* Initialization error handling should go here */ +} + +void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) +{ + BLE& ble = params->ble; + ble_error_t error = params->error; + + if (error != BLE_ERROR_NONE) { + onBleInitError(ble, error); + return; + } + + if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { + return; + } + + ble.gap().onDisconnection(disconnectionCallback); + + /* Setup primary service. */ + hrServicePtr = new HeartRateService(ble, hrmCounter, HeartRateService::LOCATION_FINGER); + + /* Setup advertising. */ + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); + ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.gap().setAdvertisingInterval(1000); /* 1000ms */ + ble.gap().startAdvertising(); +} + +void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) { + BLE &ble = BLE::Instance(); + eventQueue.post(Callback<void()>(&ble, &BLE::processEvents)); +} + +int main() +{ + eventQueue.post_every(periodicCallback, 500); + + BLE &ble = BLE::Instance(); + ble.onEventsToProcess(scheduleBleEventsProcessing); + ble.init(bleInitComplete); + + while (true) { + eventQueue.dispatch(); + } + + return 0; +}