I've got some basic filter code setup (but not yet tested).
Dependencies: BLE_API Queue mbed nRF51822
Fork of BLE_HeartRate by
main.cpp
- Committer:
- roysandberg
- Date:
- 2015-05-17
- Revision:
- 61:1de72bdab0ef
- Parent:
- 56:83623419d5e4
- Child:
- 62:8e2fbe131b53
File content as of revision 61:1de72bdab0ef:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 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.h" #include "BLEDevice.h" #include "HeartRateService.h" #include "DeviceInformationService.h" /* Enable the following if you need to throttle the connection interval. This has * the effect of reducing energy consumption after a connection is made; * particularly for applications where the central may want a fast connection * interval.*/ #define UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL 0 extern void setup_sampler(void (*function)(uint32_t)); BLEDevice ble; DigitalOut led1(LED1); volatile uint8_t hrmCounter = 100; // init HRM to 100bps const static char DEVICE_NAME[] = "HRM1"; static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE, GattService::UUID_DEVICE_INFORMATION_SERVICE }; static volatile bool triggerSensorPolling = false; void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) { ble.startAdvertising(); // restart advertising } //void periodicCallback(void) //{ // led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ // // /* Note that the periodicCallback() executes in interrupt context, so it is safer to do // * heavy-weight sensor polling from the main thread. */ // triggerSensorPolling = true; //} void sampler_callback(uint32_t value) { hrmCounter = (uint8_t) (value); // led1 = !led1; triggerSensorPolling = true; } int main(void) { led1 = 1; // Ticker ticker; //ticker.attach(periodicCallback, 0.1); // blink LED every second printf("Executing code...\n"); setup_sampler(&sampler_callback); ble.init(); ble.onDisconnection(disconnectionCallback); /* Setup primary service. */ //uint8_t hrmCounter = 100; // init HRM to 100bps HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER); /* Setup auxiliary service. */ DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1"); /* Setup advertising. */ ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR); ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); ble.setAdvertisingInterval(1000); ble.startAdvertising(); // infinite loop while (1) { // check for trigger from periodicCallback() if (triggerSensorPolling && ble.getGapState().connected) { triggerSensorPolling = false; led1 = !led1; printf("v=%d\n", hrmCounter); // // 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; // } // update bps hrService.updateHeartRate(hrmCounter); } else { ble.waitForEvent(); // low power wait for event } } }