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@19:a1ab85d6a0d5, 2018-05-31 (annotated)
- Committer:
- gkroussos
- Date:
- Thu May 31 16:14:49 2018 +0000
- Revision:
- 19:a1ab85d6a0d5
- Parent:
- 18:86ccdd5a2bfd
Activated LM35;
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" |
andresag | 15:57860d1cd14d | 18 | #include "ble/BLE.h" |
andresag | 15:57860d1cd14d | 19 | #include "ble/services/HealthThermometerService.h" |
rgrover1 | 0:d01bde90471b | 20 | |
gkroussos | 18:86ccdd5a2bfd | 21 | AnalogIn LM35(P0_2); |
gkroussos | 18:86ccdd5a2bfd | 22 | |
rgrover1 | 4:83c07b0e93d6 | 23 | DigitalOut led1(LED1); |
rgrover1 | 0:d01bde90471b | 24 | |
andresag | 15:57860d1cd14d | 25 | static HealthThermometerService *thermometerServicePtr; |
andresag | 15:57860d1cd14d | 26 | |
andresag | 15:57860d1cd14d | 27 | static const char DEVICE_NAME[] = "Therm"; |
rgrover1 | 0:d01bde90471b | 28 | static const uint16_t uuid16_list[] = {GattService::UUID_HEALTH_THERMOMETER_SERVICE}; |
rgrover1 | 0:d01bde90471b | 29 | static volatile bool triggerSensorPolling = false; |
andresag | 15:57860d1cd14d | 30 | static float currentTemperature = 39.6; |
rgrover1 | 0:d01bde90471b | 31 | |
mbedAustin | 8:63addc0221e7 | 32 | /* Restart Advertising on disconnection*/ |
rgrover1 | 14:677ef88025b8 | 33 | void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) |
rgrover1 | 0:d01bde90471b | 34 | { |
andresag | 15:57860d1cd14d | 35 | BLE::Instance().gap().startAdvertising(); |
rgrover1 | 0:d01bde90471b | 36 | } |
rgrover1 | 0:d01bde90471b | 37 | |
rgrover1 | 10:9a7e23066427 | 38 | void periodicCallback(void) |
rgrover1 | 10:9a7e23066427 | 39 | { |
rgrover1 | 10:9a7e23066427 | 40 | led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ |
rgrover1 | 10:9a7e23066427 | 41 | |
rgrover1 | 10:9a7e23066427 | 42 | /* Note that the periodicCallback() executes in interrupt context, so it is safer to do |
rgrover1 | 10:9a7e23066427 | 43 | * heavy-weight sensor polling from the main thread. */ |
rgrover1 | 10:9a7e23066427 | 44 | triggerSensorPolling = true; |
rgrover1 | 10:9a7e23066427 | 45 | } |
rgrover1 | 10:9a7e23066427 | 46 | |
andresag | 15:57860d1cd14d | 47 | /** |
andresag | 15:57860d1cd14d | 48 | * This function is called when the ble initialization process has failed |
andresag | 15:57860d1cd14d | 49 | */ |
andresag | 15:57860d1cd14d | 50 | void onBleInitError(BLE &ble, ble_error_t error) |
rgrover1 | 0:d01bde90471b | 51 | { |
andresag | 15:57860d1cd14d | 52 | /* Avoid compiler warnings */ |
andresag | 15:57860d1cd14d | 53 | (void) ble; |
andresag | 15:57860d1cd14d | 54 | (void) error; |
andresag | 15:57860d1cd14d | 55 | /* Initialization error handling should go here */ |
andresag | 15:57860d1cd14d | 56 | } |
rgrover1 | 10:9a7e23066427 | 57 | |
andresag | 15:57860d1cd14d | 58 | /** |
andresag | 15:57860d1cd14d | 59 | * Callback triggered when the ble initialization process has finished |
andresag | 15:57860d1cd14d | 60 | */ |
andresag | 15:57860d1cd14d | 61 | void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) |
andresag | 15:57860d1cd14d | 62 | { |
andresag | 15:57860d1cd14d | 63 | BLE& ble = params->ble; |
andresag | 15:57860d1cd14d | 64 | ble_error_t error = params->error; |
andresag | 15:57860d1cd14d | 65 | |
andresag | 15:57860d1cd14d | 66 | if (error != BLE_ERROR_NONE) { |
andresag | 15:57860d1cd14d | 67 | /* In case of error, forward the error handling to onBleInitError */ |
andresag | 15:57860d1cd14d | 68 | onBleInitError(ble, error); |
andresag | 15:57860d1cd14d | 69 | return; |
andresag | 15:57860d1cd14d | 70 | } |
andresag | 15:57860d1cd14d | 71 | |
andresag | 15:57860d1cd14d | 72 | /* Ensure that it is the default instance of BLE */ |
andresag | 15:57860d1cd14d | 73 | if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { |
andresag | 15:57860d1cd14d | 74 | return; |
andresag | 15:57860d1cd14d | 75 | } |
andresag | 15:57860d1cd14d | 76 | |
rgrover1 | 13:30f6f65629b5 | 77 | ble.gap().onDisconnection(disconnectionCallback); |
rgrover1 | 0:d01bde90471b | 78 | |
rgrover1 | 10:9a7e23066427 | 79 | /* Setup primary service. */ |
andresag | 15:57860d1cd14d | 80 | thermometerServicePtr = new HealthThermometerService(ble, currentTemperature, HealthThermometerService::LOCATION_EAR); |
rgrover1 | 10:9a7e23066427 | 81 | |
rgrover1 | 0:d01bde90471b | 82 | /* setup advertising */ |
rgrover1 | 13:30f6f65629b5 | 83 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
rgrover1 | 13:30f6f65629b5 | 84 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
rgrover1 | 13:30f6f65629b5 | 85 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::THERMOMETER_EAR); |
rgrover1 | 13:30f6f65629b5 | 86 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
rgrover1 | 13:30f6f65629b5 | 87 | ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
rgrover1 | 13:30f6f65629b5 | 88 | ble.gap().setAdvertisingInterval(1000); /* 1000ms */ |
andresag | 15:57860d1cd14d | 89 | ble.gap().startAdvertising(); |
andresag | 15:57860d1cd14d | 90 | } |
andresag | 15:57860d1cd14d | 91 | |
andresag | 15:57860d1cd14d | 92 | int main(void) |
andresag | 15:57860d1cd14d | 93 | { |
andresag | 15:57860d1cd14d | 94 | led1 = 1; |
andresag | 15:57860d1cd14d | 95 | Ticker ticker; |
andresag | 15:57860d1cd14d | 96 | ticker.attach(periodicCallback, 1); |
andresag | 15:57860d1cd14d | 97 | |
andresag | 15:57860d1cd14d | 98 | BLE &ble = BLE::Instance(); |
andresag | 15:57860d1cd14d | 99 | ble.init(bleInitComplete); |
andresag | 15:57860d1cd14d | 100 | |
andresag | 15:57860d1cd14d | 101 | /* SpinWait for initialization to complete. This is necessary because the |
andresag | 15:57860d1cd14d | 102 | * BLE object is used in the main loop below. */ |
andresag | 15:57860d1cd14d | 103 | while (ble.hasInitialized() == false) { /* spin loop */ } |
rgrover1 | 0:d01bde90471b | 104 | |
mbedAustin | 8:63addc0221e7 | 105 | while (true) { |
andresag | 15:57860d1cd14d | 106 | if (triggerSensorPolling && ble.gap().getState().connected) { |
rgrover1 | 10:9a7e23066427 | 107 | triggerSensorPolling = false; |
rgrover1 | 10:9a7e23066427 | 108 | |
rgrover1 | 10:9a7e23066427 | 109 | /* In our case, we simply update the dummy temperature measurement. */ |
gkroussos | 18:86ccdd5a2bfd | 110 | /* |
gkroussos | 19:a1ab85d6a0d5 | 111 | float currentTemperature = ((LM35*3.3)-0.600)*100.0; |
gkroussos | 18:86ccdd5a2bfd | 112 | */ |
gkroussos | 19:a1ab85d6a0d5 | 113 | //currentTemperature += 0.1; |
gkroussos | 19:a1ab85d6a0d5 | 114 | currentTemperature = ((LM35*3.3)-0.600)*100.0; |
andresag | 15:57860d1cd14d | 115 | thermometerServicePtr->updateTemperature(currentTemperature); |
rgrover1 | 10:9a7e23066427 | 116 | } else { |
rgrover1 | 10:9a7e23066427 | 117 | ble.waitForEvent(); |
rgrover1 | 10:9a7e23066427 | 118 | } |
rgrover1 | 0:d01bde90471b | 119 | } |
rgrover1 | 0:d01bde90471b | 120 | } |