BLE EddystoneObserver example
This example is a fork of the following mbed-os example:
https://developer.mbed.org/teams/mbed-os-examples/code/mbed-os-example-ble-EddystoneObserver/
Please read the documentation in this page.
Diff: source/main.cpp
- Revision:
- 1:d839eae15f56
- Parent:
- 0:932f719b42d5
- Child:
- 2:6a3a66fd3889
--- a/source/main.cpp Tue Jul 26 14:38:37 2016 +0100 +++ b/source/main.cpp Thu Jul 28 23:14:32 2016 +0100 @@ -1,164 +1,164 @@ -/* mbed Microcontroller Library - * Copyright (c) 2006-2013 ARM Limited - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <mbed-events/events.h> -#include "mbed.h" -#include "ble/BLE.h" - -static const int URI_MAX_LENGTH = 18; // Maximum size of service data in ADV packets - -static EventQueue eventQueue( - /* event count */ 16 * /* event size */ 32 -); - -DigitalOut led1(LED1, 1); - -void periodicCallback(void) -{ - led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ -} - -void decodeURI(const uint8_t* uriData, const size_t uriLen) -{ - const char *prefixes[] = { - "http://www.", - "https://www.", - "http://", - "https://", - "urn:uuid:" - }; - const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *); - const char *suffixes[] = { - ".com/", - ".org/", - ".edu/", - ".net/", - ".info/", - ".biz/", - ".gov/", - ".com", - ".org", - ".edu", - ".net", - ".info", - ".biz", - ".gov" - }; - const size_t NUM_SUFFIXES = sizeof(suffixes) / sizeof(char *); - - size_t index = 0; - - /* First byte is the URL Scheme. */ - if (uriData[index] < NUM_PREFIXES) { - printf("%s", prefixes[uriData[index]]); - index++; - } else { - printf("URL Scheme was not encoded!"); - return; - } - - /* From second byte onwards we can have a character or a suffix */ - while(index < uriLen) { - if (uriData[index] < NUM_SUFFIXES) { - printf("%s", suffixes[uriData[index]]); - } else { - printf("%c", uriData[index]); - } - index++; - } - - printf("\n\r"); -} - -/* - * This function is called every time we scan an advertisement. - */ -void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params) -{ - struct AdvertisingData_t { - uint8_t length; /* doesn't include itself */ - GapAdvertisingData::DataType_t dataType; - uint8_t data[0]; - } AdvDataPacket; - - struct ApplicationData_t { - uint8_t applicationSpecificId[2]; - uint8_t frameType; - uint8_t advPowerLevels; - uint8_t uriData[URI_MAX_LENGTH]; - } AppDataPacket; - - const uint8_t BEACON_UUID[sizeof(UUID::ShortUUIDBytes_t)] = {0xAA, 0xFE}; - const uint8_t FRAME_TYPE_URL = 0x10; - const uint8_t APPLICATION_DATA_OFFSET = sizeof(ApplicationData_t) + sizeof(AdvDataPacket.dataType) - sizeof(AppDataPacket.uriData); - - AdvertisingData_t *pAdvData; - size_t index = 0; - while(index < params->advertisingDataLen) { - pAdvData = (AdvertisingData_t *)¶ms->advertisingData[index]; - if (pAdvData->dataType == GapAdvertisingData::SERVICE_DATA) { - ApplicationData_t *pAppData = (ApplicationData_t *) pAdvData->data; - if (!memcmp(pAppData->applicationSpecificId, BEACON_UUID, sizeof(BEACON_UUID)) && (pAppData->frameType == FRAME_TYPE_URL)) { - decodeURI(pAppData->uriData, pAdvData->length - APPLICATION_DATA_OFFSET); - break; - } - } - index += (pAdvData->length + 1); - } -} - -void onBleInitError(BLE &ble, ble_error_t error) -{ - /* Initialization error handling should go here */ -} - -void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) -{ - BLE& ble = params->ble; - ble_error_t error = params->error; - - if (error != BLE_ERROR_NONE) { - onBleInitError(ble, error); - return; - } - - if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { - return; - } - - ble.gap().setScanParams(1800 /* scan interval */, 1500 /* scan window */); - ble.gap().startScan(advertisementCallback); -} - -void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) { - BLE &ble = BLE::Instance(); - eventQueue.post(Callback<void()>(&ble, &BLE::processEvents)); -} - -int main() -{ - eventQueue.post_every(periodicCallback, 500); - - BLE &ble = BLE::Instance(); - ble.onEventsToProcess(scheduleBleEventsProcessing); - ble.init(bleInitComplete); - - while (true) { - eventQueue.dispatch(); - } - - return 0; -} +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <mbed-events/events.h> +#include "mbed.h" +#include "ble/BLE.h" + +static const int URI_MAX_LENGTH = 18; // Maximum size of service data in ADV packets + +static EventQueue eventQueue( + /* event count */ 16 * /* event size */ 32 +); + +DigitalOut led1(LED1, 1); + +void periodicCallback(void) +{ + led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ +} + +void decodeURI(const uint8_t* uriData, const size_t uriLen) +{ + const char *prefixes[] = { + "http://www.", + "https://www.", + "http://", + "https://", + "urn:uuid:" + }; + const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *); + const char *suffixes[] = { + ".com/", + ".org/", + ".edu/", + ".net/", + ".info/", + ".biz/", + ".gov/", + ".com", + ".org", + ".edu", + ".net", + ".info", + ".biz", + ".gov" + }; + const size_t NUM_SUFFIXES = sizeof(suffixes) / sizeof(char *); + + size_t index = 0; + + /* First byte is the URL Scheme. */ + if (uriData[index] < NUM_PREFIXES) { + printf("%s", prefixes[uriData[index]]); + index++; + } else { + printf("URL Scheme was not encoded!"); + return; + } + + /* From second byte onwards we can have a character or a suffix */ + while(index < uriLen) { + if (uriData[index] < NUM_SUFFIXES) { + printf("%s", suffixes[uriData[index]]); + } else { + printf("%c", uriData[index]); + } + index++; + } + + printf("\n\r"); +} + +/* + * This function is called every time we scan an advertisement. + */ +void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params) +{ + struct AdvertisingData_t { + uint8_t length; /* doesn't include itself */ + GapAdvertisingData::DataType_t dataType; + uint8_t data[0]; + } AdvDataPacket; + + struct ApplicationData_t { + uint8_t applicationSpecificId[2]; + uint8_t frameType; + uint8_t advPowerLevels; + uint8_t uriData[URI_MAX_LENGTH]; + } AppDataPacket; + + const uint8_t BEACON_UUID[sizeof(UUID::ShortUUIDBytes_t)] = {0xAA, 0xFE}; + const uint8_t FRAME_TYPE_URL = 0x10; + const uint8_t APPLICATION_DATA_OFFSET = sizeof(ApplicationData_t) + sizeof(AdvDataPacket.dataType) - sizeof(AppDataPacket.uriData); + + AdvertisingData_t *pAdvData; + size_t index = 0; + while(index < params->advertisingDataLen) { + pAdvData = (AdvertisingData_t *)¶ms->advertisingData[index]; + if (pAdvData->dataType == GapAdvertisingData::SERVICE_DATA) { + ApplicationData_t *pAppData = (ApplicationData_t *) pAdvData->data; + if (!memcmp(pAppData->applicationSpecificId, BEACON_UUID, sizeof(BEACON_UUID)) && (pAppData->frameType == FRAME_TYPE_URL)) { + decodeURI(pAppData->uriData, pAdvData->length - APPLICATION_DATA_OFFSET); + break; + } + } + index += (pAdvData->length + 1); + } +} + +void onBleInitError(BLE &ble, ble_error_t error) +{ + /* Initialization error handling should go here */ +} + +void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) +{ + BLE& ble = params->ble; + ble_error_t error = params->error; + + if (error != BLE_ERROR_NONE) { + onBleInitError(ble, error); + return; + } + + if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { + return; + } + + ble.gap().setScanParams(1800 /* scan interval */, 1500 /* scan window */); + ble.gap().startScan(advertisementCallback); +} + +void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) { + BLE &ble = BLE::Instance(); + eventQueue.post(Callback<void()>(&ble, &BLE::processEvents)); +} + +int main() +{ + eventQueue.post_every(500, periodicCallback); + + BLE &ble = BLE::Instance(); + ble.onEventsToProcess(scheduleBleEventsProcessing); + ble.init(bleInitComplete); + + while (true) { + eventQueue.dispatch(); + } + + return 0; +}