Delta / Mbed OS BLE_BloodPressure_Demo Featured

For Blood Pressure Demo

BLE_BloodPressure_demo implements Blood Pressure Service which enables a collector device to connect and interact with it. the service spec can be found here. User can download the APP 'nRF Connect' or 'nRF Toolbox' available in both App Store and Google Play to scan the adverting and connect to the module.

main.cpp@0:546d7178e278, 2015-05-29 (annotated)

Committer:
Marcomissyou
Date:
Fri May 29 07:26:36 2015 +0000
Revision:
0:546d7178e278
Child:
1:fc03791a9842
First commit; For Blood Pressure Demo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Marcomissyou 0:546d7178e278 1 #include "mbed.h"
Marcomissyou 0:546d7178e278 2 #include "BLEDevice.h"
Marcomissyou 0:546d7178e278 3 #include "DeviceInformationService.h"
Marcomissyou 0:546d7178e278 4 #include "BloodPressureService.h"
Marcomissyou 0:546d7178e278 5
Marcomissyou 0:546d7178e278 6 #define UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL 0
Marcomissyou 0:546d7178e278 7
Marcomissyou 0:546d7178e278 8 BLEDevice ble;
Marcomissyou 0:546d7178e278 9 DigitalOut led01(LED1);
Marcomissyou 0:546d7178e278 10
Marcomissyou 0:546d7178e278 11 const static char DEVICE_NAME[] = "Blood Pressure";
Marcomissyou 0:546d7178e278 12 static const uint16_t uuid16_list[] = {GattService::UUID_BLOOD_PRESSURE_SERVICE,
Marcomissyou 0:546d7178e278 13 GattService::UUID_DEVICE_INFORMATION_SERVICE};
Marcomissyou 0:546d7178e278 14 static volatile bool triggerSensorPolling = false;
Marcomissyou 0:546d7178e278 15
Marcomissyou 0:546d7178e278 16 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
Marcomissyou 0:546d7178e278 17 {
Marcomissyou 0:546d7178e278 18 ble.startAdvertising(); // restart advertising
Marcomissyou 0:546d7178e278 19 }
Marcomissyou 0:546d7178e278 20
Marcomissyou 0:546d7178e278 21 void periodicCallback(void)
Marcomissyou 0:546d7178e278 22 {
Marcomissyou 0:546d7178e278 23 led01 = !led01; /* Do blinky on LED1 while we're waiting for BLE events */
Marcomissyou 0:546d7178e278 24
Marcomissyou 0:546d7178e278 25 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
Marcomissyou 0:546d7178e278 26 * heavy-weight sensor polling from the main thread. */
Marcomissyou 0:546d7178e278 27 triggerSensorPolling = true;
Marcomissyou 0:546d7178e278 28 }
Marcomissyou 0:546d7178e278 29
Marcomissyou 0:546d7178e278 30 int main(void)
Marcomissyou 0:546d7178e278 31 {
Marcomissyou 0:546d7178e278 32 led01 = 1;
Marcomissyou 0:546d7178e278 33 Ticker ticker;
Marcomissyou 0:546d7178e278 34 ticker.attach(periodicCallback, 1); // blink LED every second
Marcomissyou 0:546d7178e278 35
Marcomissyou 0:546d7178e278 36 ble.init();
Marcomissyou 0:546d7178e278 37 ble.onDisconnection(disconnectionCallback);
Marcomissyou 0:546d7178e278 38
Marcomissyou 0:546d7178e278 39 /* Setup primary service. */
Marcomissyou 0:546d7178e278 40 float SystolicValue = 100.0f; // mmHg
Marcomissyou 0:546d7178e278 41 float DiastolicValue = 70.0f; //
Marcomissyou 0:546d7178e278 42 float MeanArterialValue = 55.0f; //
Marcomissyou 0:546d7178e278 43
Marcomissyou 0:546d7178e278 44 BloodPressureService BloPressureService(ble, SystolicValue, DiastolicValue, MeanArterialValue, 0);
Marcomissyou 0:546d7178e278 45
Marcomissyou 0:546d7178e278 46 /* Setup auxiliary service. */
Marcomissyou 0:546d7178e278 47 DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
Marcomissyou 0:546d7178e278 48
Marcomissyou 0:546d7178e278 49 /* Setup advertising. */
Marcomissyou 0:546d7178e278 50 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
Marcomissyou 0:546d7178e278 51 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
Marcomissyou 0:546d7178e278 52 ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_BLOOD_PRESSURE);
Marcomissyou 0:546d7178e278 53 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
Marcomissyou 0:546d7178e278 54 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Marcomissyou 0:546d7178e278 55 ble.setAdvertisingInterval(1000);
Marcomissyou 0:546d7178e278 56 ble.startAdvertising();
Marcomissyou 0:546d7178e278 57
Marcomissyou 0:546d7178e278 58 while (1) {
Marcomissyou 0:546d7178e278 59 // check for trigger from periodicCallback()
Marcomissyou 0:546d7178e278 60 if (triggerSensorPolling && ble.getGapState().connected) {
Marcomissyou 0:546d7178e278 61 triggerSensorPolling = false;
Marcomissyou 0:546d7178e278 62
Marcomissyou 0:546d7178e278 63 // Do blocking calls or whatever is necessary for sensor polling.
Marcomissyou 0:546d7178e278 64 // In our case, we simply update the HRM measurement.
Marcomissyou 0:546d7178e278 65 SystolicValue++;
Marcomissyou 0:546d7178e278 66 DiastolicValue++;
Marcomissyou 0:546d7178e278 67 MeanArterialValue++;
Marcomissyou 0:546d7178e278 68
Marcomissyou 0:546d7178e278 69 if (SystolicValue == 140.0f) {
Marcomissyou 0:546d7178e278 70 SystolicValue = 90.0f;
Marcomissyou 0:546d7178e278 71 }
Marcomissyou 0:546d7178e278 72 if (DiastolicValue == 90.0f) {
Marcomissyou 0:546d7178e278 73 DiastolicValue = 50.0f;
Marcomissyou 0:546d7178e278 74 }
Marcomissyou 0:546d7178e278 75 if (MeanArterialValue == 105.0f) {
Marcomissyou 0:546d7178e278 76 MeanArterialValue = 70.0f;
Marcomissyou 0:546d7178e278 77 }
Marcomissyou 0:546d7178e278 78 // update Blood Pressure
Marcomissyou 0:546d7178e278 79 BloPressureService.updateBloodPressureMeasurement(SystolicValue, DiastolicValue, MeanArterialValue);
Marcomissyou 0:546d7178e278 80 } else {
Marcomissyou 0:546d7178e278 81 ble.waitForEvent(); // low power wait for event
Marcomissyou 0:546d7178e278 82 }
Marcomissyou 0:546d7178e278 83 }
Marcomissyou 0:546d7178e278 84 }