main.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2015 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include "mbed.h"
00018 #include "BLE.h"
00019 #include "TMP_nrf51/TMP_nrf51.h"
00020 
00021 #define APP_SPECIFIC_ID_TEST 0xFEFE
00022 
00023 #pragma pack(1)
00024 /* Advertising data  */
00025 struct AdvertisingData_t {
00026     uint8_t length; /* doesn't include itself */
00027     GapAdvertisingData::DataType dataType;
00028     uint8_t data[1];
00029 };
00030 
00031 struct ApplicationData_t {
00032     uint16_t applicationSpecificId;             /* An ID used to identify temperature value
00033                                                    in the manufacture specific AD data field */
00034     TMP_nrf51::tmpSensorValue_t tmpSensorValue; /* User defined application data */
00035 };
00036 #pragma pack()
00037 
00038 BLE        ble;
00039 DigitalOut led1(LED1);
00040 
00041 void periodicCallback(void)
00042 {
00043     led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
00044 }
00045 
00046 void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params)
00047 {
00048     AdvertisingData_t *pAdvData = NULL;
00049     uint8_t len = 0;
00050     
00051     /* Search for the manufacturer data */
00052     while(len < params->advertisingDataLen) {
00053         pAdvData = (AdvertisingData_t *)&params->advertisingData[len];
00054         if(pAdvData->dataType == GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA) {
00055             ApplicationData_t *pAppData = (ApplicationData_t *)pAdvData->data;
00056             if(pAppData->applicationSpecificId == APP_SPECIFIC_ID_TEST) {
00057                 printf("From [%02x %02x %02x], ", params->peerAddr[2], params->peerAddr[1], params->peerAddr[0]);
00058                 printf("Temp is %f\r\n", (float)pAppData->tmpSensorValue);
00059                 break;
00060             }
00061         }
00062         len += (pAdvData->length + 1);
00063     }
00064 }
00065 
00066 int main(void)
00067 {
00068     led1 = 1;
00069     Ticker ticker;
00070     ticker.attach(periodicCallback, 1);
00071 
00072     ble.init();
00073     ble.gap().setScanParams(1800 /* scan interval */, 1500 /* scan window */);
00074     ble.gap().startScan(advertisementCallback);
00075 
00076     while (true) {
00077         ble.waitForEvent();
00078     }
00079 }