работает в паре с micro:bit мигалкой
Dependencies: mbed BLE_API nRF51822
Программа для управляющего устройства на nRF51822. Используется одна Button1 для включения\выключения светодиода на устройстве приемнике.
main.cpp
- Committer:
- mamont090671
- Date:
- 2019-12-14
- Revision:
- 13:7b6d69a11fb5
- Parent:
- 12:1cd9fd69a4f4
- Child:
- 14:e31da6a3279f
File content as of revision 13:7b6d69a11fb5:
/* mbed Microcontroller Library * Copyright (c) 2006-2015 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 "ble/DiscoveredCharacteristic.h" #include "ble/DiscoveredService.h" DigitalOut alivenessLED(LED1, 1); DigitalOut connectLED(P0_22, 0); Serial pc(USBTX, USBRX); bool triggerLedCharacteristic = false; DiscoveredCharacteristic ledCharacteristic; BLE ble; Ticker ticker; //событие по таймеру void periodicCallback(void) { //Мигаем светодиодом alivenessLED = !alivenessLED; /* Do blinky on LED1 while we're waiting for BLE events */ } //результат сканирования void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params) { /* if (params->peerAddr[0] != 0x37) { // !ALERT! Alter this filter to suit your device. return; }*/ printf("adv peerAddr[%02x %02x %02x %02x %02x %02x] rssi %d, isScanResponse %u, AdvertisementType %u\r\n", params->peerAddr[5], params->peerAddr[4], params->peerAddr[3], params->peerAddr[2], params->peerAddr[1], params->peerAddr[0], params->rssi, params->isScanResponse, params->type); BLE::Instance().gap().connect(params->peerAddr, Gap::ADDR_TYPE_RANDOM_STATIC, NULL, NULL); } //поиск сервисов void serviceDiscoveryCallback(const DiscoveredService *service) { if (service->getUUID().shortOrLong() == UUID::UUID_TYPE_SHORT) { printf("S UUID-%x attrs[%u %u]\r\n", service->getUUID().getShortUUID(), service->getStartHandle(), service->getEndHandle()); } else { printf("S UUID-"); const uint8_t *longUUIDBytes = service->getUUID().getBaseUUID(); for (unsigned i = 0; i < UUID::LENGTH_OF_LONG_UUID; i++) { printf("%02x", longUUIDBytes[i]); } printf(" attrs[%u %u]\r\n", service->getStartHandle(), service->getEndHandle()); } } //поиск характеристик и вывод инфы void characteristicDiscoveryCallback(const DiscoveredCharacteristic *characteristicP) { printf(" C UUID-%x valueAttr[%u] props[%x]\r\n", characteristicP->getUUID().getShortUUID(), characteristicP->getValueHandle(), (uint8_t)characteristicP->getProperties().broadcast()); if (characteristicP->getUUID().getShortUUID() == 0xa001) { /* !ALERT! Alter this filter to suit your device. */ ledCharacteristic = *characteristicP; triggerLedCharacteristic = true; } } void discoveryTerminationCallback(Gap::Handle_t connectionHandle) { printf("terminated SD for handle %u\r\n", connectionHandle); } //Действие при событии "onConnection" void connectionCallback(const Gap::ConnectionCallbackParams_t *params) { if (params->role == Gap::CENTRAL) { BLE::Instance().gattClient().onServiceDiscoveryTermination(discoveryTerminationCallback); BLE::Instance().gattClient().launchServiceDiscovery(params->handle, serviceDiscoveryCallback, characteristicDiscoveryCallback, 0xa000, 0xa001); } } //Вызывается событием "onDataRead" void triggerToggledWrite(const GattReadCallbackParams *response) { if (response->handle == ledCharacteristic.getValueHandle()) { //#if DUMP_READ_DATA printf("triggerToggledWrite: handle %u, offset %u, len %u\r\n", response->handle, response->offset, response->len); for (unsigned index = 0; index < response->len; index++) { printf("%c[%02x]", response->data[index], response->data[index]); } printf("\r\n"); //#endif //пишем в характеристику 0х00 или 0х01, т.е. моргаем диодом дистанционно uint8_t toggledValue = response->data[0] ^ 0x1; ledCharacteristic.write(1, &toggledValue); printf("onDataRead\r\ntoggledValue: %02x\r\n", toggledValue); } } //Вызывается событием "onDataWrite" void triggerRead(const GattWriteCallbackParams *response) { if (response->handle == ledCharacteristic.getValueHandle()) { ledCharacteristic.read(); printf("onDataWrite\r\n"); } } //Действие при событии "Disconnect" void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { printf("disconnected\r\n"); pc.printf("Rescan\r\n"); ble.gap().startScan(advertisementCallback); } /** * 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().onConnection(connectionCallback); ble.gap().onDisconnection(disconnectionCallback); ble.gattClient().onDataRead(triggerToggledWrite); ble.gattClient().onDataWrite(triggerRead); ble.gap().setScanParams(500, 400); ble.gap().startScan(advertisementCallback); } int main(void) { pc.baud(9600); printf("--- Start!!! ---\r\n"); ticker.attach(periodicCallback, 1); 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) { if (triggerLedCharacteristic && !ble.gattClient().isServiceDiscoveryActive()) { triggerLedCharacteristic = false; ledCharacteristic.read(); /* We could have issued this read just as easily from * characteristicDiscoveryCallback(); but * invoking it here demonstrates the use * of isServiceDiscoveryActive() and also * the fact that it is permitted to * operate on application-local copies of * DiscoveredCharacteristic. */ } ble.waitForEvent(); } }