Sample BLE thermometer profile for nRF51-DK with sensing from LM35
Dependencies: BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1
Fork of BLE_Thermometer by
main.cpp@0:d01bde90471b, 2014-09-02 (annotated)
- Committer:
- rgrover1
- Date:
- Tue Sep 02 10:34:01 2014 +0000
- Revision:
- 0:d01bde90471b
- Child:
- 1:2deb859ed1a3
Initial attempt at a working heatlh-thermometer
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
rgrover1 | 0:d01bde90471b | 1 | /* mbed Microcontroller Library |
rgrover1 | 0:d01bde90471b | 2 | * Copyright (c) 2006-2013 ARM Limited |
rgrover1 | 0:d01bde90471b | 3 | * |
rgrover1 | 0:d01bde90471b | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
rgrover1 | 0:d01bde90471b | 5 | * you may not use this file except in compliance with the License. |
rgrover1 | 0:d01bde90471b | 6 | * You may obtain a copy of the License at |
rgrover1 | 0:d01bde90471b | 7 | * |
rgrover1 | 0:d01bde90471b | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
rgrover1 | 0:d01bde90471b | 9 | * |
rgrover1 | 0:d01bde90471b | 10 | * Unless required by applicable law or agreed to in writing, software |
rgrover1 | 0:d01bde90471b | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
rgrover1 | 0:d01bde90471b | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
rgrover1 | 0:d01bde90471b | 13 | * See the License for the specific language governing permissions and |
rgrover1 | 0:d01bde90471b | 14 | * limitations under the License. |
rgrover1 | 0:d01bde90471b | 15 | */ |
rgrover1 | 0:d01bde90471b | 16 | |
rgrover1 | 0:d01bde90471b | 17 | #include "mbed.h" |
rgrover1 | 0:d01bde90471b | 18 | #include "BLEDevice.h" |
rgrover1 | 0:d01bde90471b | 19 | #include "HealthThermometerService.h" |
rgrover1 | 0:d01bde90471b | 20 | #include "DHT.h" |
rgrover1 | 0:d01bde90471b | 21 | |
rgrover1 | 0:d01bde90471b | 22 | BLEDevice ble; |
rgrover1 | 0:d01bde90471b | 23 | DigitalOut led1(LED1); |
rgrover1 | 0:d01bde90471b | 24 | DHT sensor(D10, DHT11); |
rgrover1 | 0:d01bde90471b | 25 | |
rgrover1 | 0:d01bde90471b | 26 | #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console; |
rgrover1 | 0:d01bde90471b | 27 | * it will have an impact on code-size and power consumption. */ |
rgrover1 | 0:d01bde90471b | 28 | |
rgrover1 | 0:d01bde90471b | 29 | #if NEED_CONSOLE_OUTPUT |
rgrover1 | 0:d01bde90471b | 30 | Serial pc(USBTX, USBRX); |
rgrover1 | 0:d01bde90471b | 31 | #define DEBUG(...) { pc.printf(__VA_ARGS__); } |
rgrover1 | 0:d01bde90471b | 32 | #else |
rgrover1 | 0:d01bde90471b | 33 | #define DEBUG(...) /* nothing */ |
rgrover1 | 0:d01bde90471b | 34 | #endif /* #if NEED_CONSOLE_OUTPUT */ |
rgrover1 | 0:d01bde90471b | 35 | |
rgrover1 | 0:d01bde90471b | 36 | const static char DEVICE_NAME[] = "Therm"; |
rgrover1 | 0:d01bde90471b | 37 | static const uint16_t uuid16_list[] = {GattService::UUID_HEALTH_THERMOMETER_SERVICE}; |
rgrover1 | 0:d01bde90471b | 38 | static volatile bool triggerSensorPolling = false; |
rgrover1 | 0:d01bde90471b | 39 | |
rgrover1 | 0:d01bde90471b | 40 | void disconnectionCallback(Gap::Handle_t handle) |
rgrover1 | 0:d01bde90471b | 41 | { |
rgrover1 | 0:d01bde90471b | 42 | DEBUG("Disconnected handle %u!\n\r", handle); |
rgrover1 | 0:d01bde90471b | 43 | DEBUG("Restarting the advertising process\n\r"); |
rgrover1 | 0:d01bde90471b | 44 | ble.startAdvertising(); |
rgrover1 | 0:d01bde90471b | 45 | } |
rgrover1 | 0:d01bde90471b | 46 | |
rgrover1 | 0:d01bde90471b | 47 | void periodicCallback(void) |
rgrover1 | 0:d01bde90471b | 48 | { |
rgrover1 | 0:d01bde90471b | 49 | led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ |
rgrover1 | 0:d01bde90471b | 50 | |
rgrover1 | 0:d01bde90471b | 51 | /* Note that the periodicCallback() executes in interrupt context, so it is safer to do |
rgrover1 | 0:d01bde90471b | 52 | * heavy-weight sensor polling from the main thread. */ |
rgrover1 | 0:d01bde90471b | 53 | triggerSensorPolling = true; |
rgrover1 | 0:d01bde90471b | 54 | } |
rgrover1 | 0:d01bde90471b | 55 | |
rgrover1 | 0:d01bde90471b | 56 | int main(void) |
rgrover1 | 0:d01bde90471b | 57 | { |
rgrover1 | 0:d01bde90471b | 58 | led1 = 1; |
rgrover1 | 0:d01bde90471b | 59 | Ticker ticker; |
rgrover1 | 0:d01bde90471b | 60 | ticker.attach(periodicCallback, 1); |
rgrover1 | 0:d01bde90471b | 61 | |
rgrover1 | 0:d01bde90471b | 62 | DEBUG("Initialising the nRF51822\n\r"); |
rgrover1 | 0:d01bde90471b | 63 | ble.init(); |
rgrover1 | 0:d01bde90471b | 64 | ble.onDisconnection(disconnectionCallback); |
rgrover1 | 0:d01bde90471b | 65 | |
rgrover1 | 0:d01bde90471b | 66 | /* setup advertising */ |
rgrover1 | 0:d01bde90471b | 67 | ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
rgrover1 | 0:d01bde90471b | 68 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
rgrover1 | 0:d01bde90471b | 69 | ble.accumulateAdvertisingPayload(GapAdvertisingData::THERMOMETER_EAR); |
rgrover1 | 0:d01bde90471b | 70 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
rgrover1 | 0:d01bde90471b | 71 | ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
rgrover1 | 0:d01bde90471b | 72 | ble.setAdvertisingInterval(1600); /* 1000ms; in multiples of 0.625ms. */ |
rgrover1 | 0:d01bde90471b | 73 | ble.startAdvertising(); |
rgrover1 | 0:d01bde90471b | 74 | |
rgrover1 | 0:d01bde90471b | 75 | float initialTemperature = 39.6; |
rgrover1 | 0:d01bde90471b | 76 | HealthThermometerService thermometerService(ble, initialTemperature, HealthThermometerService::LOCATION_EAR); |
rgrover1 | 0:d01bde90471b | 77 | |
rgrover1 | 0:d01bde90471b | 78 | int error = 0; |
rgrover1 | 0:d01bde90471b | 79 | float c = 0.0f; |
rgrover1 | 0:d01bde90471b | 80 | |
rgrover1 | 0:d01bde90471b | 81 | while (true) { |
rgrover1 | 0:d01bde90471b | 82 | if (triggerSensorPolling) { |
rgrover1 | 0:d01bde90471b | 83 | triggerSensorPolling = false; |
rgrover1 | 0:d01bde90471b | 84 | |
rgrover1 | 0:d01bde90471b | 85 | /* Do blocking calls or whatever is necessary for sensor polling. */ |
rgrover1 | 0:d01bde90471b | 86 | /* In our case, we simply update the dummy HRM measurement. */ |
rgrover1 | 0:d01bde90471b | 87 | error = sensor.readData(); |
rgrover1 | 0:d01bde90471b | 88 | if (!error) { |
rgrover1 | 0:d01bde90471b | 89 | c = sensor.ReadTemperature(CELCIUS); |
rgrover1 | 0:d01bde90471b | 90 | thermometerService.updateTemperature(c); |
rgrover1 | 0:d01bde90471b | 91 | } |
rgrover1 | 0:d01bde90471b | 92 | } else { |
rgrover1 | 0:d01bde90471b | 93 | ble.waitForEvent(); |
rgrover1 | 0:d01bde90471b | 94 | } |
rgrover1 | 0:d01bde90471b | 95 | } |
rgrover1 | 0:d01bde90471b | 96 | } |