This fork is functionally identical to the main path, but has been updated to reflect changes in the library APIs, so this code now builds straight "out of the box" without needing modifications
Dependencies: BLE_API mbed nRF51822
Fork of BLE_GATT_Example by
main.cpp
- Committer:
- melmon
- Date:
- 2015-10-20
- Revision:
- 18:1953b4516ea2
- Parent:
- 17:32973972d2dd
File content as of revision 18:1953b4516ea2:
#include "mbed.h" #include "BLE.h" BLEDevice ble; DigitalOut led(LED1); 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 *params) { ble.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("\n\rled on ") : printf("\n\rled off "); // print led toggle } // print the data if more than 1 byte is written else { printf("\n\r Data received: length = %d, data = 0x",params->len); for(int x=0; x < params->len; x++) { printf("%x",params->data[x]); } } // 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.onDisconnection(disconnectionCallback); ble.onDataWritten(writeCharCallback); /* setup advertising */ ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet ble.setAdvertisingInterval(100); // 100ms. // add our custom service ble.addService(customService); // start advertising ble.startAdvertising(); // infinite loop waiting for BLE interrupt events while (true) { ble.waitForEvent(); //Save power } }