David Simmons / Mbed OS BLE-K30-CO2Sensor

Run a K30 CO2 sensor on a Nordic nRF52DK Board

Fork of mbed-os-example-ble-BatteryLevel by mbed-os-examples

source/main.cpp@3:488ecd009a27, 2016-07-28 (annotated)

Committer:
Vincent Coubard
Date:
Thu Jul 28 23:34:10 2016 +0100
Revision:
3:488ecd009a27
Parent:
2:18b05b3173a8
Child:
4:52bffaff7f0b
Sync with mbed-os-5.1.0-rc3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Vincent Coubard 3:488ecd009a27 1 /* mbed Microcontroller Library
Vincent Coubard 3:488ecd009a27 2 * Copyright (c) 2006-2014 ARM Limited
Vincent Coubard 3:488ecd009a27 3 *
Vincent Coubard 3:488ecd009a27 4 * Licensed under the Apache License, Version 2.0 (the "License");
Vincent Coubard 3:488ecd009a27 5 * you may not use this file except in compliance with the License.
Vincent Coubard 3:488ecd009a27 6 * You may obtain a copy of the License at
Vincent Coubard 3:488ecd009a27 7 *
Vincent Coubard 3:488ecd009a27 8 * http://www.apache.org/licenses/LICENSE-2.0
Vincent Coubard 3:488ecd009a27 9 *
Vincent Coubard 3:488ecd009a27 10 * Unless required by applicable law or agreed to in writing, software
Vincent Coubard 3:488ecd009a27 11 * distributed under the License is distributed on an "AS IS" BASIS,
Vincent Coubard 3:488ecd009a27 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Vincent Coubard 3:488ecd009a27 13 * See the License for the specific language governing permissions and
Vincent Coubard 3:488ecd009a27 14 * limitations under the License.
Vincent Coubard 3:488ecd009a27 15 */
Vincent Coubard 3:488ecd009a27 16
Vincent Coubard 3:488ecd009a27 17 #include <mbed-events/events.h>
Vincent Coubard 3:488ecd009a27 18 #include <mbed.h>
Vincent Coubard 3:488ecd009a27 19 #include "ble/BLE.h"
Vincent Coubard 3:488ecd009a27 20 #include "ble/Gap.h"
Vincent Coubard 3:488ecd009a27 21 #include "ble/services/BatteryService.h"
Vincent Coubard 3:488ecd009a27 22
Vincent Coubard 3:488ecd009a27 23 DigitalOut led1(LED1, 1);
Vincent Coubard 3:488ecd009a27 24
Vincent Coubard 3:488ecd009a27 25 const static char DEVICE_NAME[] = "BATTERY";
Vincent Coubard 3:488ecd009a27 26 static const uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE};
Vincent Coubard 3:488ecd009a27 27
Vincent Coubard 3:488ecd009a27 28 static uint8_t batteryLevel = 50;
Vincent Coubard 3:488ecd009a27 29 static BatteryService* batteryServicePtr;
Vincent Coubard 3:488ecd009a27 30
Vincent Coubard 3:488ecd009a27 31 static EventQueue eventQueue(
Vincent Coubard 3:488ecd009a27 32 /* event count */ 16 * /* event size */ 32
Vincent Coubard 3:488ecd009a27 33 );
Vincent Coubard 3:488ecd009a27 34
Vincent Coubard 3:488ecd009a27 35 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
Vincent Coubard 3:488ecd009a27 36 {
Vincent Coubard 3:488ecd009a27 37 BLE::Instance().gap().startAdvertising();
Vincent Coubard 3:488ecd009a27 38 }
Vincent Coubard 3:488ecd009a27 39
Vincent Coubard 3:488ecd009a27 40 void updateSensorValue() {
Vincent Coubard 3:488ecd009a27 41 batteryLevel++;
Vincent Coubard 3:488ecd009a27 42 if (batteryLevel > 100) {
Vincent Coubard 3:488ecd009a27 43 batteryLevel = 20;
Vincent Coubard 3:488ecd009a27 44 }
Vincent Coubard 3:488ecd009a27 45
Vincent Coubard 3:488ecd009a27 46 batteryServicePtr->updateBatteryLevel(batteryLevel);
Vincent Coubard 3:488ecd009a27 47 }
Vincent Coubard 3:488ecd009a27 48
Vincent Coubard 3:488ecd009a27 49 void blinkCallback(void)
Vincent Coubard 3:488ecd009a27 50 {
Vincent Coubard 3:488ecd009a27 51 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
Vincent Coubard 3:488ecd009a27 52
Vincent Coubard 3:488ecd009a27 53 BLE &ble = BLE::Instance();
Vincent Coubard 3:488ecd009a27 54 if (ble.gap().getState().connected) {
Vincent Coubard 3:488ecd009a27 55 eventQueue.post(updateSensorValue);
Vincent Coubard 3:488ecd009a27 56 }
Vincent Coubard 3:488ecd009a27 57 }
Vincent Coubard 3:488ecd009a27 58
Vincent Coubard 3:488ecd009a27 59 /**
Vincent Coubard 3:488ecd009a27 60 * This function is called when the ble initialization process has failled
Vincent Coubard 3:488ecd009a27 61 */
Vincent Coubard 3:488ecd009a27 62 void onBleInitError(BLE &ble, ble_error_t error)
Vincent Coubard 3:488ecd009a27 63 {
Vincent Coubard 3:488ecd009a27 64 /* Initialization error handling should go here */
Vincent Coubard 3:488ecd009a27 65 }
Vincent Coubard 3:488ecd009a27 66
Vincent Coubard 3:488ecd009a27 67 /**
Vincent Coubard 3:488ecd009a27 68 * Callback triggered when the ble initialization process has finished
Vincent Coubard 3:488ecd009a27 69 */
Vincent Coubard 3:488ecd009a27 70 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
Vincent Coubard 3:488ecd009a27 71 {
Vincent Coubard 3:488ecd009a27 72 BLE& ble = params->ble;
Vincent Coubard 3:488ecd009a27 73 ble_error_t error = params->error;
Vincent Coubard 3:488ecd009a27 74
Vincent Coubard 3:488ecd009a27 75 if (error != BLE_ERROR_NONE) {
Vincent Coubard 3:488ecd009a27 76 /* In case of error, forward the error handling to onBleInitError */
Vincent Coubard 3:488ecd009a27 77 onBleInitError(ble, error);
Vincent Coubard 3:488ecd009a27 78 return;
Vincent Coubard 3:488ecd009a27 79 }
Vincent Coubard 3:488ecd009a27 80
Vincent Coubard 3:488ecd009a27 81 /* Ensure that it is the default instance of BLE */
Vincent Coubard 3:488ecd009a27 82 if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
Vincent Coubard 3:488ecd009a27 83 return;
Vincent Coubard 3:488ecd009a27 84 }
Vincent Coubard 3:488ecd009a27 85
Vincent Coubard 3:488ecd009a27 86 ble.gap().onDisconnection(disconnectionCallback);
Vincent Coubard 3:488ecd009a27 87
Vincent Coubard 3:488ecd009a27 88 /* Setup primary service */
Vincent Coubard 3:488ecd009a27 89 batteryServicePtr = new BatteryService(ble, batteryLevel);
Vincent Coubard 3:488ecd009a27 90
Vincent Coubard 3:488ecd009a27 91 /* Setup advertising */
Vincent Coubard 3:488ecd009a27 92 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
Vincent Coubard 3:488ecd009a27 93 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *) uuid16_list, sizeof(uuid16_list));
Vincent Coubard 3:488ecd009a27 94 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *) DEVICE_NAME, sizeof(DEVICE_NAME));
Vincent Coubard 3:488ecd009a27 95 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Vincent Coubard 3:488ecd009a27 96 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
Vincent Coubard 3:488ecd009a27 97 ble.gap().startAdvertising();
Vincent Coubard 3:488ecd009a27 98 }
Vincent Coubard 3:488ecd009a27 99
Vincent Coubard 3:488ecd009a27 100 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
Vincent Coubard 3:488ecd009a27 101 BLE &ble = BLE::Instance();
Vincent Coubard 3:488ecd009a27 102 eventQueue.post(Callback<void()>(&ble, &BLE::processEvents));
Vincent Coubard 3:488ecd009a27 103 }
Vincent Coubard 3:488ecd009a27 104
Vincent Coubard 3:488ecd009a27 105 int main()
Vincent Coubard 3:488ecd009a27 106 {
Vincent Coubard 3:488ecd009a27 107 eventQueue.post_every(500, blinkCallback);
Vincent Coubard 3:488ecd009a27 108
Vincent Coubard 3:488ecd009a27 109 BLE &ble = BLE::Instance();
Vincent Coubard 3:488ecd009a27 110 ble.onEventsToProcess(scheduleBleEventsProcessing);
Vincent Coubard 3:488ecd009a27 111 ble.init(bleInitComplete);
Vincent Coubard 3:488ecd009a27 112
Vincent Coubard 3:488ecd009a27 113 while (true) {
Vincent Coubard 3:488ecd009a27 114 eventQueue.dispatch();
Vincent Coubard 3:488ecd009a27 115 }
Vincent Coubard 3:488ecd009a27 116
Vincent Coubard 3:488ecd009a27 117 return 0;
Vincent Coubard 3:488ecd009a27 118 }