main.cpp

00001 #include "mbed.h"
00002 #include "ble/BLE.h"
00003 
00004 DigitalOut led(LED1, 1);
00005 uint16_t customServiceUUID  = 0xD00D;
00006 uint16_t readCharUUID       = 0x2A7D;
00007 uint16_t writeCharUUID      = 0x2A87;
00008 
00009 const static uint8_t iBeacon[] = {
00010     0x4C, 0x00,
00011     0x02, 0x15,
00012     0xC0, 0x01, 0xBA, 0xBE, 0xB1, 0x6B, 0x00, 0xB5, 0x5E, 0xC5, 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE,
00013     0x00, 0x01, 0x00, 0x01, 0xCE    
00014 };
00015 
00016 
00017 const static char     DEVICE_NAME[]        = "00010001"; // change this
00018 static const uint16_t uuid16_list[]        = {0xD00D}; //Custom UUID, FFFF is reserved for development
00019 
00020 /* Set Up custom Characteristics */
00021 static uint8_t readValue[20] = {0, };
00022 ReadOnlyArrayGattCharacteristic<uint8_t, sizeof(readValue)> readChar(readCharUUID, readValue);
00023 
00024 static uint8_t writeValue[20] = {0, };
00025 WriteOnlyArrayGattCharacteristic<uint8_t, sizeof(writeValue)> writeChar(writeCharUUID, writeValue);
00026 
00027 /* Set up custom service */
00028 GattCharacteristic *characteristics[] = {&readChar, &writeChar};
00029 GattService        customService(customServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
00030 
00031 
00032 /*
00033  *  Restart advertising when phone app disconnects
00034 */
00035 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *)
00036 {
00037     BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising();
00038 }
00039 
00040 /*
00041  *  Handle writes to writeCharacteristic
00042 */
00043 void writeCharCallback(const GattWriteCallbackParams *params)
00044 {
00045      led=true;
00046      printf("led off\n\r");
00047      /* Check to see what characteristic was written, by handle */
00048     if(params->handle == writeChar.getValueHandle()) {
00049         /* toggle LED if only if dragos.stoica@qualitance.com#1234#open or #close */
00050         if(params->len == 4) {
00051             led=false;
00052             printf("led on\n\r"); // print led toggle
00053         }
00054 
00055             printf("Data received: length = %d, data = 0x",params->len);
00056             for(int x=0; x < params->len; x++) {
00057                 printf("%x", params->data[x]);
00058             }
00059             printf("\n\r");
00060 
00061         /* Update the readChar with the value of writeChar */
00062         BLE::Instance(BLE::DEFAULT_INSTANCE).gattServer().write(readChar.getValueHandle(), params->data, params->len);
00063     }
00064 }
00065 /*
00066  * Initialization callback
00067  */
00068 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00069 {
00070     BLE &ble          = params->ble;
00071     ble_error_t error = params->error;
00072     
00073     if (error != BLE_ERROR_NONE) {
00074         return;
00075     }
00076 
00077     ble.gap().onDisconnection(disconnectionCallback);
00078     ble.gattServer().onDataWritten(writeCharCallback);
00079 
00080     /* Setup advertising */
00081     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT
00082     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type
00083     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, iBeacon, sizeof(iBeacon));
00084     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00085     ble.gap().accumulateScanResponse(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name
00086     ble.gap().accumulateScanResponse(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet
00087     ble.gap().setAdvertisingInterval(100); // 100ms.
00088 
00089     /* Add our custom service */
00090     ble.addService(customService);
00091 
00092     /* Start advertising */
00093     ble.gap().startAdvertising();
00094 }
00095 
00096 /*
00097  *  Main loop
00098 */
00099 int main(void)
00100 {
00101     /* initialize stuff */
00102     printf("\n\r********* Starting Main Loop *********\n\r");
00103     
00104     BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
00105     ble.init(bleInitComplete);
00106     
00107     /* SpinWait for initialization to complete. This is necessary because the
00108      * BLE object is used in the main loop below. */
00109     while (ble.hasInitialized()  == false) { /* spin loop */ }
00110 
00111     /* Infinite loop waiting for BLE interrupt events */
00112     while (true) {
00113         ble.waitForEvent(); /* Save power */
00114     }
00115 }