Diff: application/main.cpp

Revision:

0:64ca984b3efd

Child:

1:9eadd2dc4b6e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/application/main.cpp	Tue Feb 13 18:53:45 2018 +0000
@@ -0,0 +1,128 @@
+/** 
+  * This is the code for "BLE Device for motorbike". The device is attached on any bike at will.
+  * User can control 2 switches and these switches can control anything that user wants ie: turn on
+  * the bike, turn on the alarm system of the bike, turn on the light...
+  * Temperature sensor is also included in the device. User can view the temperature when he/she gets
+  * near the bike.
+  
+  * Revision:
+  * v0_1: only one switch is used.
+  * v0_5: another switch is added.
+  * v0_7: thermometer is added. User can view thermomether data on the phone. 
+  * v0_8: humidity and air quality are added. User can view measured data on the phone. 
+  * v1_0: a real DHT22 library is added.
+  */
+
+/* ======================== INCLUDES ========================= */
+#include <events/mbed_events.h>
+#include <mbed.h>
+#include "ble/BLE.h"
+#include "ble_healthcare_service.h"
+
+/* ======================== DEFINES ========================== */
+
+/* ======================= VARIABLES ========================= */
+/* GLOBAL VARIABLES */
+static float          currentTemperature   = 39.6;
+static uint8_t        currentHRMCounter    = 80;
+
+/* PRIVATE VARIABLES */
+const static char     DEVICE_NAME[] = "HEALTH STATE";
+static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE};
+
+
+/* STRUCTS/CLASSESS */
+static EventQueue        eventQueue(EVENTS_EVENT_SIZE * 20);
+HealthCareService       *HealthCareServicePtr;
+
+/* ================== FUNCTION PROTOTYPES ==================== */
+
+/* ==================== FUNCTION DETAILS ===================== */
+/* Restart Advertising on disconnection*/
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *) {
+    BLE::Instance().gap().startAdvertising();
+}
+
+
+void main_event(void) {
+    /* Do blocking calls or whatever is necessary for sensor polling.
+       In our case, we simply update the Temperature measurement. */
+    currentTemperature = (currentTemperature + 0.1 > 43.0) ? 39.6 : currentTemperature + 0.1;
+    currentHRMCounter  = (currentHRMCounter + 1 > 120) ? 80 : currentHRMCounter + 1;
+    HealthCareServicePtr->updateTemperature(currentTemperature);
+    HealthCareServicePtr->updateHeartRate(currentHRMCounter);
+}
+
+void periodicCallback(void) {
+    if (BLE::Instance().gap().getState().connected) {
+        eventQueue.call(main_event);
+    }
+}
+
+void printMacAddress() {
+    /* Print out device MAC address to the console*/
+    Gap::AddressType_t addr_type;
+    Gap::Address_t address;
+    BLE::Instance().gap().getAddress(&addr_type, address);
+    printf("DEVICE MAC ADDRESS: ");
+    for (int i = 5; i >= 1; i--) {
+        printf("%02x:", address[i]);
+    }
+    printf("%02x\r\n", address[0]);
+}
+
+void onBleInitError(BLE &ble, ble_error_t error) {
+   /* Initialization error handling should go here */
+}
+
+/** 
+  * @brief Callback triggered when the ble initialization process has finished
+  */
+void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) {
+    BLE&        ble   = params->ble;
+    ble_error_t error = params->error;
+
+    if (error != BLE_ERROR_NONE) {
+        onBleInitError(ble, error);
+        return;
+    }
+
+    /* Ensure that it is the default instance of BLE */
+    if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
+        return;
+    }
+
+    ble.gap().onDisconnection(disconnectionCallback);
+    HealthCareServicePtr = new HealthCareService(ble, currentTemperature, 3, 
+                                                      /*currentHRMCounter,*/ 3);
+
+    /* 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::THERMOMETER_EAR);
+    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();
+    
+    printMacAddress();
+}
+
+void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
+    BLE &ble = BLE::Instance();
+    eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
+}
+
+/* MAIN FUNCTION */
+int main() {
+    eventQueue.call_every(500, periodicCallback);
+
+    BLE &ble = BLE::Instance();
+    ble.onEventsToProcess(scheduleBleEventsProcessing);
+    ble.init(bleInitComplete);
+
+    eventQueue.dispatch_forever();
+
+    return 0;
+}