George Roussos / Mbed 2 deprecated BLE_Thermometer

Sample BLE thermometer profile for nRF51-DK with sensing from LM35

Dependencies:   BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1

Fork of BLE_Thermometer by Bluetooth Low Energy

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?

UserRevisionLine numberNew 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 }