Eric Tsai / Mbed 2 deprecated BLE_Gateway

BLE ADV Gateway, converts advertisement to proper JSON serial output

Dependencies:   BLE_API mbed mbedtls nRF51822

main.cpp@4:e5fa4c8838db, 2015-07-31 (annotated)

Committer:
sunsmile2015
Date:
Fri Jul 31 09:11:43 2015 +0000
Revision:
4:e5fa4c8838db
Parent:
3:3eda308b78e6
Child:
5:f4d74a8cad43
use update adv payload API to change temperature value

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sunsmile2015 0:3dc6e424dba0 1
sunsmile2015 0:3dc6e424dba0 2 /* mbed Microcontroller Library
sunsmile2015 0:3dc6e424dba0 3 * Copyright (c) 2006-2015 ARM Limited
sunsmile2015 0:3dc6e424dba0 4 *
sunsmile2015 0:3dc6e424dba0 5 * Licensed under the Apache License, Version 2.0 (the "License");
sunsmile2015 0:3dc6e424dba0 6 * you may not use this file except in compliance with the License.
sunsmile2015 0:3dc6e424dba0 7 * You may obtain a copy of the License at
sunsmile2015 0:3dc6e424dba0 8 *
sunsmile2015 0:3dc6e424dba0 9 * http://www.apache.org/licenses/LICENSE-2.0
sunsmile2015 0:3dc6e424dba0 10 *
sunsmile2015 0:3dc6e424dba0 11 * Unless required by applicable law or agreed to in writing, software
sunsmile2015 0:3dc6e424dba0 12 * distributed under the License is distributed on an "AS IS" BASIS,
sunsmile2015 0:3dc6e424dba0 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sunsmile2015 0:3dc6e424dba0 14 * See the License for the specific language governing permissions and
sunsmile2015 0:3dc6e424dba0 15 * limitations under the License.
sunsmile2015 0:3dc6e424dba0 16 */
sunsmile2015 0:3dc6e424dba0 17
sunsmile2015 0:3dc6e424dba0 18 #include "mbed.h"
sunsmile2015 0:3dc6e424dba0 19 #include "ble/BLE.h"
sunsmile2015 0:3dc6e424dba0 20 #include "TMP_nrf51/TMP_nrf51.h"
sunsmile2015 0:3dc6e424dba0 21
sunsmile2015 4:e5fa4c8838db 22 #define APP_SPECIFIC_ID_TEST 0xFEFE
sunsmile2015 3:3eda308b78e6 23
sunsmile2015 3:3eda308b78e6 24 #pragma pack(1)
sunsmile2015 4:e5fa4c8838db 25 struct ApplicationData_t {
sunsmile2015 4:e5fa4c8838db 26 uint16_t applicationSpecificId; /* An ID used to identify temperature value
sunsmile2015 4:e5fa4c8838db 27 in the manufacture specific AD data field */
sunsmile2015 4:e5fa4c8838db 28 TMP_nrf51::tmpSensorValue_t tmpSensorValue; /* User defined application data */
sunsmile2015 4:e5fa4c8838db 29 };
sunsmile2015 3:3eda308b78e6 30 #pragma pack()
sunsmile2015 3:3eda308b78e6 31
sunsmile2015 0:3dc6e424dba0 32 BLE ble;
sunsmile2015 2:b935358da5ba 33 TMP_nrf51 tempSensor;
sunsmile2015 0:3dc6e424dba0 34 DigitalOut alivenessLED(LED1, 1);
sunsmile2015 4:e5fa4c8838db 35 static bool triggerTempValueUpdate = false;
sunsmile2015 0:3dc6e424dba0 36
sunsmile2015 2:b935358da5ba 37 void periodicCallback(void)
sunsmile2015 2:b935358da5ba 38 {
sunsmile2015 2:b935358da5ba 39 /* Do blinky on LED1 while we're waiting for BLE events */
sunsmile2015 2:b935358da5ba 40 alivenessLED = !alivenessLED;
sunsmile2015 4:e5fa4c8838db 41 triggerTempValueUpdate = true;
sunsmile2015 4:e5fa4c8838db 42 }
sunsmile2015 4:e5fa4c8838db 43
sunsmile2015 4:e5fa4c8838db 44 void accumulateApplicationData(ApplicationData_t &appData)
sunsmile2015 4:e5fa4c8838db 45 {
sunsmile2015 4:e5fa4c8838db 46 appData.applicationSpecificId = APP_SPECIFIC_ID_TEST;
sunsmile2015 4:e5fa4c8838db 47 /* Read a new temperature value */
sunsmile2015 4:e5fa4c8838db 48 appData.tmpSensorValue = tempSensor.get();
sunsmile2015 0:3dc6e424dba0 49 }
sunsmile2015 0:3dc6e424dba0 50
sunsmile2015 2:b935358da5ba 51 void temperatureValueAdvertising(void)
sunsmile2015 2:b935358da5ba 52 {
sunsmile2015 4:e5fa4c8838db 53 ApplicationData_t appData;
sunsmile2015 3:3eda308b78e6 54
sunsmile2015 4:e5fa4c8838db 55 accumulateApplicationData(appData);
sunsmile2015 4:e5fa4c8838db 56 //printf("Temp is %f\r\n", (float)appData.tmpSensorValue);
sunsmile2015 3:3eda308b78e6 57
sunsmile2015 3:3eda308b78e6 58 /* Setup advertising payload */
sunsmile2015 3:3eda308b78e6 59 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); /* Set flag */
sunsmile2015 3:3eda308b78e6 60 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_THERMOMETER); /* Set appearance */
sunsmile2015 4:e5fa4c8838db 61 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&appData, sizeof(ApplicationData_t)); /* Set data */
sunsmile2015 3:3eda308b78e6 62 /* Setup advertising parameters */
sunsmile2015 2:b935358da5ba 63 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
sunsmile2015 2:b935358da5ba 64 ble.gap().setAdvertisingInterval(500);
sunsmile2015 3:3eda308b78e6 65 /* Start advertising */
sunsmile2015 2:b935358da5ba 66 ble.gap().startAdvertising();
sunsmile2015 2:b935358da5ba 67 }
sunsmile2015 2:b935358da5ba 68
sunsmile2015 4:e5fa4c8838db 69 void updateSensorValueInAdvPayload(void)
sunsmile2015 4:e5fa4c8838db 70 {
sunsmile2015 4:e5fa4c8838db 71 ApplicationData_t appData;
sunsmile2015 4:e5fa4c8838db 72
sunsmile2015 4:e5fa4c8838db 73 accumulateApplicationData(appData);
sunsmile2015 4:e5fa4c8838db 74
sunsmile2015 4:e5fa4c8838db 75 /* Stop advertising first */
sunsmile2015 4:e5fa4c8838db 76 ble.gap().stopAdvertising();
sunsmile2015 4:e5fa4c8838db 77 /* Only update temperature value field */
sunsmile2015 4:e5fa4c8838db 78 ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&appData, sizeof(ApplicationData_t));
sunsmile2015 4:e5fa4c8838db 79 /* Start advertising again */
sunsmile2015 4:e5fa4c8838db 80 ble.gap().startAdvertising();
sunsmile2015 4:e5fa4c8838db 81 }
sunsmile2015 4:e5fa4c8838db 82
sunsmile2015 2:b935358da5ba 83 int main(void)
sunsmile2015 2:b935358da5ba 84 {
sunsmile2015 0:3dc6e424dba0 85 Ticker ticker;
sunsmile2015 4:e5fa4c8838db 86 /* Enable trigger every 2 seconds */
sunsmile2015 0:3dc6e424dba0 87 ticker.attach(periodicCallback, 2);
sunsmile2015 0:3dc6e424dba0 88
sunsmile2015 0:3dc6e424dba0 89 ble.init();
sunsmile2015 4:e5fa4c8838db 90 /* Start temperature advertising */
sunsmile2015 4:e5fa4c8838db 91 temperatureValueAdvertising();
sunsmile2015 4:e5fa4c8838db 92
sunsmile2015 0:3dc6e424dba0 93 while (true) {
sunsmile2015 4:e5fa4c8838db 94 if (triggerTempValueUpdate) {
sunsmile2015 4:e5fa4c8838db 95 /* Update temperature value */
sunsmile2015 4:e5fa4c8838db 96 updateSensorValueInAdvPayload();
sunsmile2015 4:e5fa4c8838db 97 triggerTempValueUpdate = false;
sunsmile2015 0:3dc6e424dba0 98 }
sunsmile2015 0:3dc6e424dba0 99 ble.waitForEvent();
sunsmile2015 0:3dc6e424dba0 100 }
sunsmile2015 0:3dc6e424dba0 101 }