main.cpp

00001 #include "mbed.h"
00002 #include "BLE.h"
00003 #include "DeviceInformationService.h"
00004 #include "BloodPressureService.h"
00005  
00006 BLEDevice  ble;
00007 DigitalOut led01(LED1);
00008  
00009 const static char     DEVICE_NAME[]        = "Blood Pressure";
00010 static const uint16_t uuid16_list[]        = {GattService::UUID_BLOOD_PRESSURE_SERVICE,
00011                                               GattService::UUID_DEVICE_INFORMATION_SERVICE};
00012 static volatile bool  triggerSensorPolling = false;
00013  
00014 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00015 {
00016     ble.startAdvertising(); // restart advertising
00017 }
00018  
00019 void periodicCallback(void)
00020 {
00021     led01 = !led01; /* Do blinky on LED1 while we're waiting for BLE events */
00022  
00023     /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
00024      * heavy-weight sensor polling from the main thread. */
00025     triggerSensorPolling = true;
00026 }
00027  
00028 int main(void)
00029 {
00030     led01 = 1;
00031     Ticker ticker;
00032     ticker.attach(periodicCallback, 1); // blink LED every second
00033  
00034     ble.init();
00035     ble.gap().onDisconnection(disconnectionCallback);
00036  
00037     /* Setup primary service. */
00038     float SystolicValue = 100.0f; //  mmHg
00039     float DiastolicValue = 70.0f; //  
00040     float MeanArterialValue = 55.0f; //
00041     
00042     BloodPressureService BloPressureService(ble, SystolicValue, DiastolicValue, MeanArterialValue, 0);
00043  
00044     /* Setup auxiliary service. */
00045     DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
00046  
00047     /* Setup advertising. */
00048     ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00049     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00050     ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_BLOOD_PRESSURE);
00051     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00052     ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00053     ble.setAdvertisingInterval(1000);
00054     ble.startAdvertising();
00055  
00056     while (1) {
00057         // check for trigger from periodicCallback()
00058         if (triggerSensorPolling && ble.getGapState().connected) {
00059             triggerSensorPolling = false;
00060  
00061             // Do blocking calls or whatever is necessary for sensor polling.
00062             // In our case, we simply update the HRM measurement. 
00063             SystolicValue++;
00064             DiastolicValue++;
00065             MeanArterialValue++;
00066             
00067             if (SystolicValue == 140.0f) {
00068                 SystolicValue = 90.0f;
00069             }
00070             if (DiastolicValue == 90.0f) {
00071                 DiastolicValue = 50.0f;
00072             }
00073             if (MeanArterialValue == 105.0f) {
00074                 MeanArterialValue = 70.0f;
00075             }
00076             // update Blood Pressure 
00077             BloPressureService.updateBloodPressureMeasurement(SystolicValue, DiastolicValue, MeanArterialValue);
00078         } else {
00079             ble.waitForEvent(); // low power wait for event
00080         }
00081     }
00082 }