BTLE example for a CJMCU-8223 (NRF51822+Lis3dh). Also includes an OLED display. Further details on ioprog.com
Dependencies: mbed BLE_API nRF51822
main.cpp
- Committer:
- f3d
- Date:
- 2020-06-24
- Revision:
- 0:8fa1c7356f71
File content as of revision 0:8fa1c7356f71:
/* 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" #include "accelService.h" #include "oled.h" #define enable_interrupts() asm(" cpsie i ") #define disable_interrupts() asm(" cpsid i ") DigitalOut myled(P0_29); const static char DEVICE_NAME[] = "CJMCU-8223"; static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID,accelService::ACCEL_SERVICE_UUID}; accelService *AccelServicePtr; LEDService *ledServicePtr; void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { BLE::Instance().gap().startAdvertising(); } /** * 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)) { myled = *(params->data); } } void onDataReadCallback(const GattReadCallbackParams *params) { } /** * 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); ble.gattServer().onDataRead(onDataReadCallback); bool initialValueForLEDCharacteristic = false; ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic); int16_t initialValue = 0; AccelServicePtr = new accelService(ble,initialValue); /* 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(100); /* 100ms. */ ble.gap().startAdvertising(); } oled Oled; int main(void) { int Count=0; Oled.begin(); Lis3dh.begin(); Oled.print(0,0 ,"Hello"); BLE &ble = BLE::Instance(); ble.init(bleInitComplete); while (ble.hasInitialized() == false) { Oled.print(0,0,"BLE init fail"); myled = 1; wait(0.2); myled = 0; wait(0.1); /* spin loop */ } Oled.print(0,0,"BLE init done"); while (true) { // update the values for the BLE interface AccelServicePtr->poll(); int x,y,z; x = 1; y = 2; z = 3; // show the values on the display if (Lis3dh.dataReady()) { Lis3dh.read(x,y,z); Oled.print(0,0,x/16); Oled.print(0,1,y/16); Oled.print(0,2,z/16); } ble.waitForEvent(); } }