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

Committer:
f3d
Date:
Thu Aug 27 12:42:55 2020 +0000
Revision:
1:ab9f0e572c98
Parent:
0:6d4b6c56a7ad
Initial commit

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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 1:ab9f0e572c98 18 #include "UVSensor.h"
f3d 0:6d4b6c56a7ad 19
f3d 1:ab9f0e572c98 20 #include <BLE.h>
f3d 0:6d4b6c56a7ad 21
f3d 0:6d4b6c56a7ad 22 BLE ble;
f3d 1:ab9f0e572c98 23
f3d 0:6d4b6c56a7ad 24 const static char DEVICE_NAME[] = "NRF52832";
f3d 1:ab9f0e572c98 25 static const uint16_t uuid16_list[] = {UVService::UV_SERVICE_UUID};
f3d 0:6d4b6c56a7ad 26 DigitalOut Led(P0_25);
f3d 0:6d4b6c56a7ad 27 Ticker ticker;
f3d 1:ab9f0e572c98 28 UVService *UVServicePtr;
f3d 0:6d4b6c56a7ad 29 void periodicCallback(void)
f3d 0:6d4b6c56a7ad 30 {
f3d 0:6d4b6c56a7ad 31
f3d 1:ab9f0e572c98 32 UVServicePtr->poll();
f3d 0:6d4b6c56a7ad 33 if (Led == 0)
f3d 0:6d4b6c56a7ad 34 Led = 1;
f3d 0:6d4b6c56a7ad 35 else
f3d 0:6d4b6c56a7ad 36 Led = 0;
f3d 0:6d4b6c56a7ad 37 }
f3d 0:6d4b6c56a7ad 38
f3d 0:6d4b6c56a7ad 39 /**
f3d 0:6d4b6c56a7ad 40 * This callback allows the LEDService to receive updates to the ledState Characteristic.
f3d 0:6d4b6c56a7ad 41 *
f3d 0:6d4b6c56a7ad 42 * @param[in] params
f3d 0:6d4b6c56a7ad 43 * Information about the characterisitc being updated.
f3d 0:6d4b6c56a7ad 44 */
f3d 0:6d4b6c56a7ad 45 void onDataWrittenCallback(const GattWriteCallbackParams *params) {
f3d 0:6d4b6c56a7ad 46
f3d 0:6d4b6c56a7ad 47 }
f3d 0:6d4b6c56a7ad 48
f3d 0:6d4b6c56a7ad 49 void onDataReadCallback(const GattReadCallbackParams *params) {
f3d 0:6d4b6c56a7ad 50
f3d 0:6d4b6c56a7ad 51
f3d 0:6d4b6c56a7ad 52 }
f3d 0:6d4b6c56a7ad 53 /**
f3d 0:6d4b6c56a7ad 54 * This function is called when the ble initialization process has failed
f3d 0:6d4b6c56a7ad 55 */
f3d 0:6d4b6c56a7ad 56 void onBleInitError(BLE &ble, ble_error_t error)
f3d 0:6d4b6c56a7ad 57 {
f3d 0:6d4b6c56a7ad 58 /* Initialization error handling should go here */
f3d 0:6d4b6c56a7ad 59 }
f3d 0:6d4b6c56a7ad 60
f3d 0:6d4b6c56a7ad 61 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
f3d 0:6d4b6c56a7ad 62 {
f3d 0:6d4b6c56a7ad 63 BLE::Instance().gap().startAdvertising();
f3d 0:6d4b6c56a7ad 64 }
f3d 0:6d4b6c56a7ad 65 /**
f3d 0:6d4b6c56a7ad 66 * Callback triggered when the ble initialization process has finished
f3d 0:6d4b6c56a7ad 67 */
f3d 0:6d4b6c56a7ad 68 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
f3d 0:6d4b6c56a7ad 69 {
f3d 0:6d4b6c56a7ad 70 BLE& ble = params->ble;
f3d 0:6d4b6c56a7ad 71 ble_error_t error = params->error;
f3d 0:6d4b6c56a7ad 72
f3d 0:6d4b6c56a7ad 73 if (error != BLE_ERROR_NONE) {
f3d 0:6d4b6c56a7ad 74 /* In case of error, forward the error handling to onBleInitError */
f3d 0:6d4b6c56a7ad 75 onBleInitError(ble, error);
f3d 0:6d4b6c56a7ad 76 return;
f3d 0:6d4b6c56a7ad 77 }
f3d 0:6d4b6c56a7ad 78
f3d 0:6d4b6c56a7ad 79 /* Ensure that it is the default instance of BLE */
f3d 0:6d4b6c56a7ad 80 if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
f3d 0:6d4b6c56a7ad 81 return;
f3d 0:6d4b6c56a7ad 82 }
f3d 0:6d4b6c56a7ad 83
f3d 0:6d4b6c56a7ad 84 ble.gap().onDisconnection(disconnectionCallback);
f3d 0:6d4b6c56a7ad 85 ble.gattServer().onDataWritten(onDataWrittenCallback);
f3d 0:6d4b6c56a7ad 86 ble.gattServer().onDataRead(onDataReadCallback);
f3d 1:ab9f0e572c98 87 uint16_t initial_value = 0;
f3d 1:ab9f0e572c98 88 UVServicePtr = new UVService(ble,initial_value);
f3d 0:6d4b6c56a7ad 89
f3d 0:6d4b6c56a7ad 90 /* setup advertising */
f3d 0:6d4b6c56a7ad 91 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
f3d 0:6d4b6c56a7ad 92 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
f3d 0:6d4b6c56a7ad 93 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
f3d 0:6d4b6c56a7ad 94 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
f3d 0:6d4b6c56a7ad 95 ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
f3d 0:6d4b6c56a7ad 96 ble.gap().startAdvertising();
f3d 0:6d4b6c56a7ad 97 }
f3d 0:6d4b6c56a7ad 98 int main(void)
f3d 0:6d4b6c56a7ad 99 {
f3d 1:ab9f0e572c98 100 ble.init(bleInitComplete);
f3d 0:6d4b6c56a7ad 101 /* SpinWait for initialization to complete. This is necessary because the
f3d 0:6d4b6c56a7ad 102 * BLE object is used in the main loop below. */
f3d 0:6d4b6c56a7ad 103 while (!ble.hasInitialized()) { /* spin loop */ }
f3d 1:ab9f0e572c98 104 ticker.attach(periodicCallback, 0.1); /* Poll devices every 100ms */
f3d 0:6d4b6c56a7ad 105 while (true) {
f3d 0:6d4b6c56a7ad 106 ble.waitForEvent(); // allows or low power operation
f3d 0:6d4b6c56a7ad 107 }
f3d 0:6d4b6c56a7ad 108 }