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Dependencies:   BLE_API mbed nRF51822

Fork of BLE_GATT_Example by Bluetooth Low Energy

main.cpp.orig@20:fcc752d401ec, 2015-10-20 (annotated)

Committer:
andresag
Date:
Tue Oct 20 13:46:23 2015 +0000
Revision:
20:fcc752d401ec
Merged updated version of main.cpp with upstream.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andresag 20:fcc752d401ec 1 #include "mbed.h"
andresag 20:fcc752d401ec 2 #include "ble/BLE.h"
andresag 20:fcc752d401ec 3
andresag 20:fcc752d401ec 4 BLE ble;
andresag 20:fcc752d401ec 5 DigitalOut led(LED1, 1);
andresag 20:fcc752d401ec 6 uint16_t customServiceUUID = 0xA000;
andresag 20:fcc752d401ec 7 uint16_t readCharUUID = 0xA001;
andresag 20:fcc752d401ec 8 uint16_t writeCharUUID = 0xA002;
andresag 20:fcc752d401ec 9
andresag 20:fcc752d401ec 10 const static char DEVICE_NAME[] = "ChangeMe!!"; // change this
andresag 20:fcc752d401ec 11 static const uint16_t uuid16_list[] = {0xFFFF}; //Custom UUID, FFFF is reserved for development
andresag 20:fcc752d401ec 12
andresag 20:fcc752d401ec 13 // Set Up custom Characteristics
andresag 20:fcc752d401ec 14 static uint8_t readValue[10] = {0};
andresag 20:fcc752d401ec 15 ReadOnlyArrayGattCharacteristic<uint8_t, sizeof(readValue)> readChar(readCharUUID, readValue);
andresag 20:fcc752d401ec 16
andresag 20:fcc752d401ec 17 static uint8_t writeValue[10] = {0};
andresag 20:fcc752d401ec 18 WriteOnlyArrayGattCharacteristic<uint8_t, sizeof(writeValue)> writeChar(writeCharUUID, writeValue);
andresag 20:fcc752d401ec 19
andresag 20:fcc752d401ec 20 // Set up custom service
andresag 20:fcc752d401ec 21 GattCharacteristic *characteristics[] = {&readChar, &writeChar};
andresag 20:fcc752d401ec 22 GattService customService(customServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
andresag 20:fcc752d401ec 23
andresag 20:fcc752d401ec 24
andresag 20:fcc752d401ec 25 /*
andresag 20:fcc752d401ec 26 * Restart advertising when phone app disconnects
andresag 20:fcc752d401ec 27 */
andresag 20:fcc752d401ec 28 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *)
andresag 20:fcc752d401ec 29 {
andresag 20:fcc752d401ec 30 ble.gap().startAdvertising();
andresag 20:fcc752d401ec 31 }
andresag 20:fcc752d401ec 32
andresag 20:fcc752d401ec 33 /*
andresag 20:fcc752d401ec 34 * handle writes to writeCharacteristic
andresag 20:fcc752d401ec 35 */
andresag 20:fcc752d401ec 36 void writeCharCallback(const GattWriteCallbackParams *params)
andresag 20:fcc752d401ec 37 {
andresag 20:fcc752d401ec 38 // check to see what characteristic was written, by handle
andresag 20:fcc752d401ec 39 if(params->handle == writeChar.getValueHandle()) {
andresag 20:fcc752d401ec 40 // toggle LED if only 1 byte is written
andresag 20:fcc752d401ec 41 if(params->len == 1) {
andresag 20:fcc752d401ec 42 led = params->data[0];
andresag 20:fcc752d401ec 43 (params->data[0] == 0x00) ? printf("led on\n\r") : printf("led off\n\r"); // print led toggle
andresag 20:fcc752d401ec 44 }
andresag 20:fcc752d401ec 45 // print the data if more than 1 byte is written
andresag 20:fcc752d401ec 46 else {
andresag 20:fcc752d401ec 47 printf("Data received: length = %d, data = 0x",params->len);
andresag 20:fcc752d401ec 48 for(int x=0; x < params->len; x++) {
andresag 20:fcc752d401ec 49 printf("%x", params->data[x]);
andresag 20:fcc752d401ec 50 }
andresag 20:fcc752d401ec 51 printf("\n\r");
andresag 20:fcc752d401ec 52 }
andresag 20:fcc752d401ec 53 // update the readChar with the value of writeChar
andresag 20:fcc752d401ec 54 ble.updateCharacteristicValue(readChar.getValueHandle(), params->data,params->len);
andresag 20:fcc752d401ec 55 }
andresag 20:fcc752d401ec 56 }
andresag 20:fcc752d401ec 57
andresag 20:fcc752d401ec 58 /*
andresag 20:fcc752d401ec 59 * main loop
andresag 20:fcc752d401ec 60 */
andresag 20:fcc752d401ec 61 int
andresag 20:fcc752d401ec 62 main(void)
andresag 20:fcc752d401ec 63 {
andresag 20:fcc752d401ec 64 /* initialize stuff */
andresag 20:fcc752d401ec 65 printf("\n\r********* Starting Main Loop *********\n\r");
andresag 20:fcc752d401ec 66 ble.init();
andresag 20:fcc752d401ec 67 ble.gap().onDisconnection(disconnectionCallback);
andresag 20:fcc752d401ec 68 ble.gattServer().onDataWritten(writeCharCallback);
andresag 20:fcc752d401ec 69
andresag 20:fcc752d401ec 70 /* setup advertising */
andresag 20:fcc752d401ec 71 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT
andresag 20:fcc752d401ec 72 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type
andresag 20:fcc752d401ec 73 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name
andresag 20:fcc752d401ec 74 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet
andresag 20:fcc752d401ec 75 ble.gap().setAdvertisingInterval(100); // 100ms.
andresag 20:fcc752d401ec 76
andresag 20:fcc752d401ec 77 // add our custom service
andresag 20:fcc752d401ec 78 ble.addService(customService);
andresag 20:fcc752d401ec 79
andresag 20:fcc752d401ec 80 // start advertising
andresag 20:fcc752d401ec 81 ble.gap().startAdvertising();
andresag 20:fcc752d401ec 82
andresag 20:fcc752d401ec 83 // infinite loop waiting for BLE interrupt events
andresag 20:fcc752d401ec 84 while (true) {
andresag 20:fcc752d401ec 85 ble.waitForEvent(); //Save power
andresag 20:fcc752d401ec 86 }
andresag 20:fcc752d401ec 87 }