BLE ADV Gateway, converts advertisement to proper JSON serial output
Dependencies: BLE_API mbed mbedtls nRF51822
main.cpp@5:f4d74a8cad43, 2015-08-26 (annotated)
- Committer:
- rgrover1
- Date:
- Wed Aug 26 12:21:47 2015 +0000
- Revision:
- 5:f4d74a8cad43
- Parent:
- 4:e5fa4c8838db
- Child:
- 7:0a8bbb6dea16
A very simple temperature-beacon; to go with the temperature-scanner.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sunsmile2015 | 0:3dc6e424dba0 | 1 | /* mbed Microcontroller Library |
sunsmile2015 | 0:3dc6e424dba0 | 2 | * Copyright (c) 2006-2015 ARM Limited |
sunsmile2015 | 0:3dc6e424dba0 | 3 | * |
sunsmile2015 | 0:3dc6e424dba0 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
sunsmile2015 | 0:3dc6e424dba0 | 5 | * you may not use this file except in compliance with the License. |
sunsmile2015 | 0:3dc6e424dba0 | 6 | * You may obtain a copy of the License at |
sunsmile2015 | 0:3dc6e424dba0 | 7 | * |
sunsmile2015 | 0:3dc6e424dba0 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
sunsmile2015 | 0:3dc6e424dba0 | 9 | * |
sunsmile2015 | 0:3dc6e424dba0 | 10 | * Unless required by applicable law or agreed to in writing, software |
sunsmile2015 | 0:3dc6e424dba0 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
sunsmile2015 | 0:3dc6e424dba0 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
sunsmile2015 | 0:3dc6e424dba0 | 13 | * See the License for the specific language governing permissions and |
sunsmile2015 | 0:3dc6e424dba0 | 14 | * limitations under the License. |
sunsmile2015 | 0:3dc6e424dba0 | 15 | */ |
sunsmile2015 | 0:3dc6e424dba0 | 16 | |
sunsmile2015 | 0:3dc6e424dba0 | 17 | #include "mbed.h" |
rgrover1 | 5:f4d74a8cad43 | 18 | #include "toolchain.h" |
sunsmile2015 | 0:3dc6e424dba0 | 19 | #include "ble/BLE.h" |
sunsmile2015 | 0:3dc6e424dba0 | 20 | #include "TMP_nrf51/TMP_nrf51.h" |
sunsmile2015 | 0:3dc6e424dba0 | 21 | |
rgrover1 | 5:f4d74a8cad43 | 22 | BLE ble; |
sunsmile2015 | 3:3eda308b78e6 | 23 | |
rgrover1 | 5:f4d74a8cad43 | 24 | static Ticker ticker; |
rgrover1 | 5:f4d74a8cad43 | 25 | static TMP_nrf51 tempSensor; |
rgrover1 | 5:f4d74a8cad43 | 26 | static bool triggerTempValueUpdate = false; |
rgrover1 | 5:f4d74a8cad43 | 27 | static DigitalOut alivenessLED(LED1, 1); |
rgrover1 | 5:f4d74a8cad43 | 28 | |
sunsmile2015 | 4:e5fa4c8838db | 29 | struct ApplicationData_t { |
rgrover1 | 5:f4d74a8cad43 | 30 | uint16_t applicationSpecificId; /* An ID used to identify temperature value in the manufacture specific AD data field */ |
rgrover1 | 5:f4d74a8cad43 | 31 | TMP_nrf51::TempSensorValue_t tmpSensorValue; /* User defined application data */ |
rgrover1 | 5:f4d74a8cad43 | 32 | } PACKED; |
sunsmile2015 | 0:3dc6e424dba0 | 33 | |
sunsmile2015 | 2:b935358da5ba | 34 | void periodicCallback(void) |
sunsmile2015 | 2:b935358da5ba | 35 | { |
rgrover1 | 5:f4d74a8cad43 | 36 | alivenessLED = !alivenessLED; /* Do blinky on LED1 while we're waiting for BLE events. */ |
rgrover1 | 5:f4d74a8cad43 | 37 | |
rgrover1 | 5:f4d74a8cad43 | 38 | /* Note that the periodicCallback() executes in interrupt context, so it is safer to do |
rgrover1 | 5:f4d74a8cad43 | 39 | * heavy-weight sensor polling from the main thread (where we should be able to block safely, if needed). */ |
sunsmile2015 | 4:e5fa4c8838db | 40 | triggerTempValueUpdate = true; |
sunsmile2015 | 4:e5fa4c8838db | 41 | } |
sunsmile2015 | 4:e5fa4c8838db | 42 | |
rgrover1 | 5:f4d74a8cad43 | 43 | void setupApplicationData(ApplicationData_t &appData) |
sunsmile2015 | 4:e5fa4c8838db | 44 | { |
rgrover1 | 5:f4d74a8cad43 | 45 | static const uint16_t APP_SPECIFIC_ID_TEST = 0xFEFE; |
sunsmile2015 | 4:e5fa4c8838db | 46 | appData.applicationSpecificId = APP_SPECIFIC_ID_TEST; |
rgrover1 | 5:f4d74a8cad43 | 47 | appData.tmpSensorValue = tempSensor.get(); |
sunsmile2015 | 0:3dc6e424dba0 | 48 | } |
sunsmile2015 | 0:3dc6e424dba0 | 49 | |
rgrover1 | 5:f4d74a8cad43 | 50 | void startAdvertisingTemperature(void) |
sunsmile2015 | 2:b935358da5ba | 51 | { |
rgrover1 | 5:f4d74a8cad43 | 52 | /* Setup advertising payload */ |
rgrover1 | 5:f4d74a8cad43 | 53 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
rgrover1 | 5:f4d74a8cad43 | 54 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_THERMOMETER); |
sunsmile2015 | 4:e5fa4c8838db | 55 | ApplicationData_t appData; |
rgrover1 | 5:f4d74a8cad43 | 56 | setupApplicationData(appData); |
rgrover1 | 5:f4d74a8cad43 | 57 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&appData, sizeof(ApplicationData_t)); |
rgrover1 | 5:f4d74a8cad43 | 58 | |
sunsmile2015 | 3:3eda308b78e6 | 59 | /* Setup advertising parameters */ |
sunsmile2015 | 2:b935358da5ba | 60 | ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED); |
sunsmile2015 | 2:b935358da5ba | 61 | ble.gap().setAdvertisingInterval(500); |
sunsmile2015 | 2:b935358da5ba | 62 | |
sunsmile2015 | 4:e5fa4c8838db | 63 | ble.gap().startAdvertising(); |
sunsmile2015 | 4:e5fa4c8838db | 64 | } |
sunsmile2015 | 4:e5fa4c8838db | 65 | |
sunsmile2015 | 2:b935358da5ba | 66 | int main(void) |
sunsmile2015 | 2:b935358da5ba | 67 | { |
rgrover1 | 5:f4d74a8cad43 | 68 | ticker.attach(periodicCallback, 2); /* trigger sensor polling every 2 seconds */ |
sunsmile2015 | 0:3dc6e424dba0 | 69 | |
sunsmile2015 | 0:3dc6e424dba0 | 70 | ble.init(); |
rgrover1 | 5:f4d74a8cad43 | 71 | startAdvertisingTemperature(); |
rgrover1 | 5:f4d74a8cad43 | 72 | |
sunsmile2015 | 0:3dc6e424dba0 | 73 | while (true) { |
sunsmile2015 | 4:e5fa4c8838db | 74 | if (triggerTempValueUpdate) { |
rgrover1 | 5:f4d74a8cad43 | 75 | // Do blocking calls or whatever hardware-specific action is necessary to poll the sensor. |
rgrover1 | 5:f4d74a8cad43 | 76 | ApplicationData_t appData; |
rgrover1 | 5:f4d74a8cad43 | 77 | setupApplicationData(appData); |
rgrover1 | 5:f4d74a8cad43 | 78 | ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&appData, sizeof(ApplicationData_t)); |
rgrover1 | 5:f4d74a8cad43 | 79 | |
sunsmile2015 | 4:e5fa4c8838db | 80 | triggerTempValueUpdate = false; |
sunsmile2015 | 0:3dc6e424dba0 | 81 | } |
rgrover1 | 5:f4d74a8cad43 | 82 | |
sunsmile2015 | 0:3dc6e424dba0 | 83 | ble.waitForEvent(); |
sunsmile2015 | 0:3dc6e424dba0 | 84 | } |
sunsmile2015 | 0:3dc6e424dba0 | 85 | } |