Roy Sandberg / Mbed 2 deprecated BLE_ECG

I've got some basic filter code setup (but not yet tested).

Dependencies:   BLE_API Queue mbed nRF51822

Fork of BLE_HeartRate by Bluetooth Low Energy

main.cpp@61:1de72bdab0ef, 2015-05-17 (annotated)

Committer:
roysandberg
Date:
Sun May 17 00:27:16 2015 +0000
Revision:
61:1de72bdab0ef
Parent:
56:83623419d5e4
Child:
62:8e2fbe131b53
Initial release;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ktownsend 0:87a7fc231fae 1 /* mbed Microcontroller Library
ktownsend 0:87a7fc231fae 2 * Copyright (c) 2006-2013 ARM Limited
ktownsend 0:87a7fc231fae 3 *
ktownsend 0:87a7fc231fae 4 * Licensed under the Apache License, Version 2.0 (the "License");
ktownsend 0:87a7fc231fae 5 * you may not use this file except in compliance with the License.
ktownsend 0:87a7fc231fae 6 * You may obtain a copy of the License at
ktownsend 0:87a7fc231fae 7 *
ktownsend 0:87a7fc231fae 8 * http://www.apache.org/licenses/LICENSE-2.0
ktownsend 0:87a7fc231fae 9 *
ktownsend 0:87a7fc231fae 10 * Unless required by applicable law or agreed to in writing, software
ktownsend 0:87a7fc231fae 11 * distributed under the License is distributed on an "AS IS" BASIS,
ktownsend 0:87a7fc231fae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ktownsend 0:87a7fc231fae 13 * See the License for the specific language governing permissions and
ktownsend 0:87a7fc231fae 14 * limitations under the License.
ktownsend 0:87a7fc231fae 15 */
ktownsend 0:87a7fc231fae 16
ktownsend 0:87a7fc231fae 17 #include "mbed.h"
Rohit Grover 10:2436164b692e 18 #include "BLEDevice.h"
rgrover1 39:6390604f904c 19 #include "HeartRateService.h"
rgrover1 42:06ebef2e0e44 20 #include "DeviceInformationService.h"
ktownsend 0:87a7fc231fae 21
rgrover1 52:6bbf62943106 22 /* Enable the following if you need to throttle the connection interval. This has
rgrover1 52:6bbf62943106 23 * the effect of reducing energy consumption after a connection is made;
rgrover1 52:6bbf62943106 24 * particularly for applications where the central may want a fast connection
rgrover1 52:6bbf62943106 25 * interval.*/
rgrover1 52:6bbf62943106 26 #define UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL 0
rgrover1 52:6bbf62943106 27
roysandberg 61:1de72bdab0ef 28 extern void setup_sampler(void (*function)(uint32_t));
roysandberg 61:1de72bdab0ef 29
Rohit Grover 10:2436164b692e 30 BLEDevice ble;
rgrover1 47:430545f41113 31 DigitalOut led1(LED1);
ktownsend 0:87a7fc231fae 32
roysandberg 61:1de72bdab0ef 33 volatile uint8_t hrmCounter = 100; // init HRM to 100bps
roysandberg 61:1de72bdab0ef 34
mbedAustin 55:3a7d497a3e03 35 const static char DEVICE_NAME[] = "HRM1";
rgrover1 42:06ebef2e0e44 36 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE,
roysandberg 61:1de72bdab0ef 37 GattService::UUID_DEVICE_INFORMATION_SERVICE
roysandberg 61:1de72bdab0ef 38 };
rgrover1 39:6390604f904c 39 static volatile bool triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 40
rgrover1 41:9cef0129da5f 41 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
ktownsend 0:87a7fc231fae 42 {
rgrover1 46:ee7c55907f36 43 ble.startAdvertising(); // restart advertising
rgrover1 7:daab8ba5139e 44 }
Rohit Grover 3:24e2b056d229 45
roysandberg 61:1de72bdab0ef 46 //void periodicCallback(void)
roysandberg 61:1de72bdab0ef 47 //{
roysandberg 61:1de72bdab0ef 48 // led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
roysandberg 61:1de72bdab0ef 49 //
roysandberg 61:1de72bdab0ef 50 // /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
roysandberg 61:1de72bdab0ef 51 // * heavy-weight sensor polling from the main thread. */
roysandberg 61:1de72bdab0ef 52 // triggerSensorPolling = true;
roysandberg 61:1de72bdab0ef 53 //}
roysandberg 61:1de72bdab0ef 54
roysandberg 61:1de72bdab0ef 55 void sampler_callback(uint32_t value)
Rohit Grover 11:1d9aafee4984 56 {
roysandberg 61:1de72bdab0ef 57 hrmCounter = (uint8_t) (value);
roysandberg 61:1de72bdab0ef 58 // led1 = !led1;
rgrover1 39:6390604f904c 59 triggerSensorPolling = true;
Rohit Grover 11:1d9aafee4984 60 }
Rohit Grover 11:1d9aafee4984 61
ktownsend 0:87a7fc231fae 62 int main(void)
ktownsend 0:87a7fc231fae 63 {
rgrover1 47:430545f41113 64 led1 = 1;
roysandberg 61:1de72bdab0ef 65 // Ticker ticker;
roysandberg 61:1de72bdab0ef 66 //ticker.attach(periodicCallback, 0.1); // blink LED every second
roysandberg 61:1de72bdab0ef 67
roysandberg 61:1de72bdab0ef 68 printf("Executing code...\n");
roysandberg 61:1de72bdab0ef 69
roysandberg 61:1de72bdab0ef 70 setup_sampler(&sampler_callback);
ktownsend 0:87a7fc231fae 71
Rohit Grover 15:7ba28817e31e 72 ble.init();
rgrover1 7:daab8ba5139e 73 ble.onDisconnection(disconnectionCallback);
ktownsend 0:87a7fc231fae 74
rgrover1 45:98c5a34b07a4 75 /* Setup primary service. */
roysandberg 61:1de72bdab0ef 76 //uint8_t hrmCounter = 100; // init HRM to 100bps
rgrover1 45:98c5a34b07a4 77 HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
rgrover1 45:98c5a34b07a4 78
mbedAustin 55:3a7d497a3e03 79 /* Setup auxiliary service. */
rgrover1 45:98c5a34b07a4 80 DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
rgrover1 45:98c5a34b07a4 81
rgrover1 45:98c5a34b07a4 82 /* Setup advertising. */
Rohit Grover 29:76d865c718a6 83 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 40:e73130c6f2bb 84 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 42:06ebef2e0e44 85 ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
Rohit Grover 29:76d865c718a6 86 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 7:daab8ba5139e 87 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 56:83623419d5e4 88 ble.setAdvertisingInterval(1000);
rgrover1 7:daab8ba5139e 89 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 90
mbedAustin 55:3a7d497a3e03 91 // infinite loop
mbedAustin 55:3a7d497a3e03 92 while (1) {
mbedAustin 55:3a7d497a3e03 93 // check for trigger from periodicCallback()
rgrover1 50:477004d54431 94 if (triggerSensorPolling && ble.getGapState().connected) {
Rohit Grover 36:ea2a1b4f51c1 95 triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 96
roysandberg 61:1de72bdab0ef 97 led1 = !led1;
roysandberg 61:1de72bdab0ef 98
roysandberg 61:1de72bdab0ef 99 printf("v=%d\n", hrmCounter);
roysandberg 61:1de72bdab0ef 100 // // Do blocking calls or whatever is necessary for sensor polling.
roysandberg 61:1de72bdab0ef 101 // // In our case, we simply update the HRM measurement.
roysandberg 61:1de72bdab0ef 102 // hrmCounter++;
roysandberg 61:1de72bdab0ef 103 //
roysandberg 61:1de72bdab0ef 104 // // 100 <= HRM bps <=175
roysandberg 61:1de72bdab0ef 105 // if (hrmCounter == 175) {
roysandberg 61:1de72bdab0ef 106 // hrmCounter = 100;
roysandberg 61:1de72bdab0ef 107 // }
roysandberg 61:1de72bdab0ef 108
mbedAustin 55:3a7d497a3e03 109 // update bps
rgrover1 39:6390604f904c 110 hrService.updateHeartRate(hrmCounter);
Rohit Grover 36:ea2a1b4f51c1 111 } else {
mbedAustin 55:3a7d497a3e03 112 ble.waitForEvent(); // low power wait for event
Rohit Grover 36:ea2a1b4f51c1 113 }
ktownsend 0:87a7fc231fae 114 }
ktownsend 0:87a7fc231fae 115 }