
Simple example to demonstrate custom made BLE service and characteristics.
Fork of BLE_GATT_Example by
Revision 21:73f42c00b1db, committed 2015-10-20
- Comitter:
- andresag
- Date:
- Tue Oct 20 13:48:13 2015 +0000
- Parent:
- 20:fcc752d401ec
- Child:
- 22:406127954d1f
- Commit message:
- Removed redundant .orig file.
Changed in this revision
main.cpp.orig | Show diff for this revision Revisions of this file |
--- a/main.cpp.orig Tue Oct 20 13:46:23 2015 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,87 +0,0 @@ -#include "mbed.h" -#include "ble/BLE.h" - -BLE ble; -DigitalOut led(LED1, 1); -uint16_t customServiceUUID = 0xA000; -uint16_t readCharUUID = 0xA001; -uint16_t writeCharUUID = 0xA002; - -const static char DEVICE_NAME[] = "ChangeMe!!"; // change this -static const uint16_t uuid16_list[] = {0xFFFF}; //Custom UUID, FFFF is reserved for development - -// Set Up custom Characteristics -static uint8_t readValue[10] = {0}; -ReadOnlyArrayGattCharacteristic<uint8_t, sizeof(readValue)> readChar(readCharUUID, readValue); - -static uint8_t writeValue[10] = {0}; -WriteOnlyArrayGattCharacteristic<uint8_t, sizeof(writeValue)> writeChar(writeCharUUID, writeValue); - -// Set up custom service -GattCharacteristic *characteristics[] = {&readChar, &writeChar}; -GattService customService(customServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *)); - - -/* - * Restart advertising when phone app disconnects -*/ -void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *) -{ - ble.gap().startAdvertising(); -} - -/* - * handle writes to writeCharacteristic -*/ -void writeCharCallback(const GattWriteCallbackParams *params) -{ - // check to see what characteristic was written, by handle - if(params->handle == writeChar.getValueHandle()) { - // toggle LED if only 1 byte is written - if(params->len == 1) { - led = params->data[0]; - (params->data[0] == 0x00) ? printf("led on\n\r") : printf("led off\n\r"); // print led toggle - } - // print the data if more than 1 byte is written - else { - printf("Data received: length = %d, data = 0x",params->len); - for(int x=0; x < params->len; x++) { - printf("%x", params->data[x]); - } - printf("\n\r"); - } - // update the readChar with the value of writeChar - ble.updateCharacteristicValue(readChar.getValueHandle(), params->data,params->len); - } -} - -/* - * main loop -*/ -int -main(void) -{ - /* initialize stuff */ - printf("\n\r********* Starting Main Loop *********\n\r"); - ble.init(); - ble.gap().onDisconnection(disconnectionCallback); - ble.gattServer().onDataWritten(writeCharCallback); - - /* setup advertising */ - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT - ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet - ble.gap().setAdvertisingInterval(100); // 100ms. - - // add our custom service - ble.addService(customService); - - // start advertising - ble.gap().startAdvertising(); - - // infinite loop waiting for BLE interrupt events - while (true) { - ble.waitForEvent(); //Save power - } -}