This project can be used to measure UV light levels. It uses an ML8511 UV sensors and outputs its value over BLE in units of mW/cm^2
main.cpp@0:6d4b6c56a7ad, 2020-08-22 (annotated)
- Committer:
- f3d
- Date:
- Sat Aug 22 15:21:53 2020 +0000
- Revision:
- 0:6d4b6c56a7ad
- Child:
- 1:ab9f0e572c98
Initial commit with basic BLE running
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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f3d | 0:6d4b6c56a7ad | 1 | /* mbed Microcontroller Library |
f3d | 0:6d4b6c56a7ad | 2 | * Copyright (c) 2006-2015 ARM Limited |
f3d | 0:6d4b6c56a7ad | 3 | * |
f3d | 0:6d4b6c56a7ad | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
f3d | 0:6d4b6c56a7ad | 5 | * you may not use this file except in compliance with the License. |
f3d | 0:6d4b6c56a7ad | 6 | * You may obtain a copy of the License at |
f3d | 0:6d4b6c56a7ad | 7 | * |
f3d | 0:6d4b6c56a7ad | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
f3d | 0:6d4b6c56a7ad | 9 | * |
f3d | 0:6d4b6c56a7ad | 10 | * Unless required by applicable law or agreed to in writing, software |
f3d | 0:6d4b6c56a7ad | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
f3d | 0:6d4b6c56a7ad | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
f3d | 0:6d4b6c56a7ad | 13 | * See the License for the specific language governing permissions and |
f3d | 0:6d4b6c56a7ad | 14 | * limitations under the License. |
f3d | 0:6d4b6c56a7ad | 15 | */ |
f3d | 0:6d4b6c56a7ad | 16 | |
f3d | 0:6d4b6c56a7ad | 17 | #include "mbed.h" |
f3d | 0:6d4b6c56a7ad | 18 | |
f3d | 0:6d4b6c56a7ad | 19 | #include "ble/services/iBeacon.h" |
f3d | 0:6d4b6c56a7ad | 20 | |
f3d | 0:6d4b6c56a7ad | 21 | BLE ble; |
f3d | 0:6d4b6c56a7ad | 22 | const static char DEVICE_NAME[] = "NRF52832"; |
f3d | 0:6d4b6c56a7ad | 23 | static const uint16_t uuid16_list[] = {0xabcd,0x1234}; |
f3d | 0:6d4b6c56a7ad | 24 | DigitalOut Led(P0_25); |
f3d | 0:6d4b6c56a7ad | 25 | Ticker ticker; |
f3d | 0:6d4b6c56a7ad | 26 | void periodicCallback(void) |
f3d | 0:6d4b6c56a7ad | 27 | { |
f3d | 0:6d4b6c56a7ad | 28 | |
f3d | 0:6d4b6c56a7ad | 29 | if (Led == 0) |
f3d | 0:6d4b6c56a7ad | 30 | Led = 1; |
f3d | 0:6d4b6c56a7ad | 31 | else |
f3d | 0:6d4b6c56a7ad | 32 | Led = 0; |
f3d | 0:6d4b6c56a7ad | 33 | |
f3d | 0:6d4b6c56a7ad | 34 | } |
f3d | 0:6d4b6c56a7ad | 35 | |
f3d | 0:6d4b6c56a7ad | 36 | /** |
f3d | 0:6d4b6c56a7ad | 37 | * This callback allows the LEDService to receive updates to the ledState Characteristic. |
f3d | 0:6d4b6c56a7ad | 38 | * |
f3d | 0:6d4b6c56a7ad | 39 | * @param[in] params |
f3d | 0:6d4b6c56a7ad | 40 | * Information about the characterisitc being updated. |
f3d | 0:6d4b6c56a7ad | 41 | */ |
f3d | 0:6d4b6c56a7ad | 42 | void onDataWrittenCallback(const GattWriteCallbackParams *params) { |
f3d | 0:6d4b6c56a7ad | 43 | |
f3d | 0:6d4b6c56a7ad | 44 | } |
f3d | 0:6d4b6c56a7ad | 45 | |
f3d | 0:6d4b6c56a7ad | 46 | void onDataReadCallback(const GattReadCallbackParams *params) { |
f3d | 0:6d4b6c56a7ad | 47 | |
f3d | 0:6d4b6c56a7ad | 48 | |
f3d | 0:6d4b6c56a7ad | 49 | } |
f3d | 0:6d4b6c56a7ad | 50 | /** |
f3d | 0:6d4b6c56a7ad | 51 | * This function is called when the ble initialization process has failed |
f3d | 0:6d4b6c56a7ad | 52 | */ |
f3d | 0:6d4b6c56a7ad | 53 | void onBleInitError(BLE &ble, ble_error_t error) |
f3d | 0:6d4b6c56a7ad | 54 | { |
f3d | 0:6d4b6c56a7ad | 55 | /* Initialization error handling should go here */ |
f3d | 0:6d4b6c56a7ad | 56 | } |
f3d | 0:6d4b6c56a7ad | 57 | |
f3d | 0:6d4b6c56a7ad | 58 | void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) |
f3d | 0:6d4b6c56a7ad | 59 | { |
f3d | 0:6d4b6c56a7ad | 60 | BLE::Instance().gap().startAdvertising(); |
f3d | 0:6d4b6c56a7ad | 61 | } |
f3d | 0:6d4b6c56a7ad | 62 | /** |
f3d | 0:6d4b6c56a7ad | 63 | * Callback triggered when the ble initialization process has finished |
f3d | 0:6d4b6c56a7ad | 64 | */ |
f3d | 0:6d4b6c56a7ad | 65 | void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) |
f3d | 0:6d4b6c56a7ad | 66 | { |
f3d | 0:6d4b6c56a7ad | 67 | BLE& ble = params->ble; |
f3d | 0:6d4b6c56a7ad | 68 | ble_error_t error = params->error; |
f3d | 0:6d4b6c56a7ad | 69 | |
f3d | 0:6d4b6c56a7ad | 70 | if (error != BLE_ERROR_NONE) { |
f3d | 0:6d4b6c56a7ad | 71 | /* In case of error, forward the error handling to onBleInitError */ |
f3d | 0:6d4b6c56a7ad | 72 | onBleInitError(ble, error); |
f3d | 0:6d4b6c56a7ad | 73 | return; |
f3d | 0:6d4b6c56a7ad | 74 | } |
f3d | 0:6d4b6c56a7ad | 75 | |
f3d | 0:6d4b6c56a7ad | 76 | /* Ensure that it is the default instance of BLE */ |
f3d | 0:6d4b6c56a7ad | 77 | if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { |
f3d | 0:6d4b6c56a7ad | 78 | return; |
f3d | 0:6d4b6c56a7ad | 79 | } |
f3d | 0:6d4b6c56a7ad | 80 | |
f3d | 0:6d4b6c56a7ad | 81 | ble.gap().onDisconnection(disconnectionCallback); |
f3d | 0:6d4b6c56a7ad | 82 | ble.gattServer().onDataWritten(onDataWrittenCallback); |
f3d | 0:6d4b6c56a7ad | 83 | ble.gattServer().onDataRead(onDataReadCallback); |
f3d | 0:6d4b6c56a7ad | 84 | |
f3d | 0:6d4b6c56a7ad | 85 | /* setup advertising */ |
f3d | 0:6d4b6c56a7ad | 86 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
f3d | 0:6d4b6c56a7ad | 87 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
f3d | 0:6d4b6c56a7ad | 88 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
f3d | 0:6d4b6c56a7ad | 89 | ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
f3d | 0:6d4b6c56a7ad | 90 | ble.gap().setAdvertisingInterval(1000); /* 1000ms. */ |
f3d | 0:6d4b6c56a7ad | 91 | ble.gap().startAdvertising(); |
f3d | 0:6d4b6c56a7ad | 92 | } |
f3d | 0:6d4b6c56a7ad | 93 | int main(void) |
f3d | 0:6d4b6c56a7ad | 94 | { |
f3d | 0:6d4b6c56a7ad | 95 | ticker.attach(periodicCallback, 0.1); /* Poll devices every 100ms */ |
f3d | 0:6d4b6c56a7ad | 96 | ble.init(bleInitComplete); |
f3d | 0:6d4b6c56a7ad | 97 | |
f3d | 0:6d4b6c56a7ad | 98 | /* SpinWait for initialization to complete. This is necessary because the |
f3d | 0:6d4b6c56a7ad | 99 | * BLE object is used in the main loop below. */ |
f3d | 0:6d4b6c56a7ad | 100 | while (!ble.hasInitialized()) { /* spin loop */ } |
f3d | 0:6d4b6c56a7ad | 101 | while (true) { |
f3d | 0:6d4b6c56a7ad | 102 | ble.waitForEvent(); // allows or low power operation |
f3d | 0:6d4b6c56a7ad | 103 | } |
f3d | 0:6d4b6c56a7ad | 104 | } |