Ben Zhang / Mbed 2 deprecated BLE_API_DEMO

A simple demo that directly uses BLE library to define service and characteristics

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_HeartRate by Bluetooth Low Energy

Files at this revision

API Documentation at this revision

Revision 49:14b2df099dfc, committed 2014-10-22

Comitter:
nebgnahz
Date:
Wed Oct 22 05:47:25 2014 +0000
Parent:
48:908b4ec086ba
Child:
50:4c02add9abba
Commit message:
style fix

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/main.cpp	Wed Oct 22 05:39:38 2014 +0000
+++ b/main.cpp	Wed Oct 22 05:47:25 2014 +0000
@@ -4,8 +4,9 @@
 BLEDevice  ble;
 DigitalOut led1(LED1);
 
-const static char     DEVICE_NAME[]        = "Nordic_HRM";
-static const uint16_t uuid16_list[]        = {0xFEDB};
+const static char     DEVICE_NAME[]        = "Nordic";
+// we only broadcast a single service
+static const uint16_t uuid16_list[]        = {0xFFFF};
 static volatile bool is_button_pressed = false;
 static volatile uint16_t led1_handler;
 
@@ -16,8 +17,9 @@
     ble.startAdvertising(); // restart advertising
 }
 
-// eventDataP->charHandle is just uint16_t
 void changeLED(const GattCharacteristicWriteCBParams *eventDataP) {
+    // eventDataP->charHandle is just uint16_t
+    // it's used to dispatch the callbacks
     if (eventDataP->charHandle == led1_handler) {
         led1 = eventDataP->data[0] % 2;
     }
@@ -58,7 +60,8 @@
         GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
     
     GattCharacteristic *charTable[] = {&led1_characteristics, &button_characteristics};
-    GattService testService(0xFFFF, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
+    GattService testService(0xFFFF, charTable,
+                            sizeof(charTable) / sizeof(GattCharacteristic *));
     
     // BLE setup, mainly we add service and callbacks
     ble.init();
@@ -67,15 +70,19 @@
     ble.onDisconnection(disconnectionCallback);
     
     // 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::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+    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::COMPLETE_LOCAL_NAME,
+                                     (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
     ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
     ble.setAdvertisingInterval(1600); /* 1000ms; in multiples of 0.625ms. */
     ble.startAdvertising();
 
     while (true) {
         if (is_button_pressed) {
+            // if button pressed, we update the characteristics
             is_button_pressed = false;
             ble.updateCharacteristicValue(button_characteristics.getValueAttribute().getHandle(),
                                           &button_state, sizeof(button_state));