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Legacy BLE LED example repackaged with Mbed OS 5.9.1
Revision 0:1129cbb9e3c9, committed 2018-08-07
- Comitter:
- RalphF
- Date:
- Tue Aug 07 16:49:34 2018 +0000
- Commit message:
- Standard BLE LED example built for Mbed OS 5.9.1. Tested with nRF52840-DK.
Changed in this revision
diff -r 000000000000 -r 1129cbb9e3c9 LEDService.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LEDService.h Tue Aug 07 16:49:34 2018 +0000 @@ -0,0 +1,42 @@ +/* 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. + */ + +#ifndef __BLE_LED_SERVICE_H__ +#define __BLE_LED_SERVICE_H__ + +class LEDService { +public: + const static uint16_t LED_SERVICE_UUID = 0xA000; + const static uint16_t LED_STATE_CHARACTERISTIC_UUID = 0xA001; + + LEDService(BLEDevice &_ble, bool initialValueForLEDCharacteristic) : + ble(_ble), ledState(LED_STATE_CHARACTERISTIC_UUID, &initialValueForLEDCharacteristic) + { + GattCharacteristic *charTable[] = {&ledState}; + GattService ledService(LED_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *)); + ble.addService(ledService); + } + + GattAttribute::Handle_t getValueHandle() const { + return ledState.getValueHandle(); + } + +private: + BLEDevice &ble; + ReadWriteGattCharacteristic<bool> ledState; +}; + +#endif /* #ifndef __BLE_LED_SERVICE_H__ */
diff -r 000000000000 -r 1129cbb9e3c9 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Aug 07 16:49:34 2018 +0000 @@ -0,0 +1,109 @@ +/* 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.h" +#include "ble/BLE.h" +#include "LEDService.h" + +DigitalOut alivenessLED(LED1, 0); +DigitalOut actuatedLED(LED2, 0); + +const static char DEVICE_NAME[] = "LED"; +static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID}; + +LEDService *ledServicePtr; + +Ticker ticker; + +void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) +{ + BLE::Instance().gap().startAdvertising(); +} + +void periodicCallback(void) +{ + alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */ +} + +/** + * This callback allows the LEDService to receive updates to the ledState Characteristic. + * + * @param[in] params + * Information about the characterisitc being updated. + */ +void onDataWrittenCallback(const GattWriteCallbackParams *params) { + if ((params->handle == ledServicePtr->getValueHandle()) && (params->len == 1)) { + actuatedLED = *(params->data); + } +} + +/** + * This function is called when the ble initialization process has failed + */ +void onBleInitError(BLE &ble, ble_error_t error) +{ + /* Initialization error handling should go here */ +} + +/** + * Callback triggered when the ble initialization process has finished + */ +void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) +{ + BLE& ble = params->ble; + ble_error_t error = params->error; + + if (error != BLE_ERROR_NONE) { + /* In case of error, forward the error handling to onBleInitError */ + onBleInitError(ble, error); + return; + } + + /* Ensure that it is the default instance of BLE */ + if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { + return; + } + + ble.gap().onDisconnection(disconnectionCallback); + ble.gattServer().onDataWritten(onDataWrittenCallback); + + bool initialValueForLEDCharacteristic = false; + ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic); + + /* setup advertising */ + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); + ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.gap().setAdvertisingInterval(1000); /* 1000ms. */ + ble.gap().startAdvertising(); +} + +int main(void) +{ + ticker.attach(periodicCallback, 1); /* Blink LED every second */ + + BLE &ble = BLE::Instance(); + ble.init(bleInitComplete); + + /* SpinWait for initialization to complete. This is necessary because the + * BLE object is used in the main loop below. */ + while (ble.hasInitialized() == false) { /* spin loop */ } + + while (true) { + ble.waitForEvent(); + } +}
diff -r 000000000000 -r 1129cbb9e3c9 mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Tue Aug 07 16:49:34 2018 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#03196b244ee00fc748cd4dbfa83b26f3fc0f376b