IoT Morioka private
This example creates a BLE beacon: a method of advertising a small amount of information to nearby devices. The information doesn't have to be human-readable; it can be in a format that only an application can use. Beacons are very easy to set up: the code for all beacons is the same, and only the information you want to advertise - the beacon payload - needs to change. he canonical source for this example lives at https://github.com/ARMmbed/mbed-os-example-ble/tree/master/BLE_Beacon
Diff: source/main.cpp
- Revision:
- 0:66b59f6860ed
- Child:
- 1:2fd54f1254fe
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/source/main.cpp Tue Jul 26 14:35:32 2016 +0100
@@ -0,0 +1,90 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <mbed-events/events.h>
+#include <mbed.h>
+#include "ble/BLE.h"
+#include "ble/services/iBeacon.h"
+
+static iBeacon* ibeaconPtr;
+
+static EventQueue eventQueue(
+ /* event count */ 4 * /* event size */ 32
+);
+
+/**
+ * This function is called when the ble initialization process has failled
+ */
+void onBleInitError(BLE &ble, ble_error_t error)
+{
+ /* Initialization error handling should go here */
+}
+
+/**
+ * Callback triggered when the ble initialization process has finished
+ */
+void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
+{
+ BLE& ble = params->ble;
+ ble_error_t error = params->error;
+
+ if (error != BLE_ERROR_NONE) {
+ /* In case of error, forward the error handling to onBleInitError */
+ onBleInitError(ble, error);
+ return;
+ }
+
+ /* Ensure that it is the default instance of BLE */
+ if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
+ return;
+ }
+
+ /**
+ * The Beacon payload has the following composition:
+ * 128-Bit / 16byte UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
+ * Major/Minor = 0x1122 / 0x3344
+ * Tx Power = 0xC8 = 200, 2's compliment is 256-200 = (-56dB)
+ *
+ * Note: please remember to calibrate your beacons TX Power for more accurate results.
+ */
+ static const uint8_t uuid[] = {0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4,
+ 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61};
+ uint16_t majorNumber = 1122;
+ uint16_t minorNumber = 3344;
+ uint16_t txPower = 0xC8;
+ ibeaconPtr = new iBeacon(ble, uuid, majorNumber, minorNumber, txPower);
+
+ ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
+ ble.gap().startAdvertising();
+}
+
+void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
+ BLE &ble = BLE::Instance();
+ eventQueue.post(Callback<void()>(&ble, &BLE::processEvents));
+}
+
+int main()
+{
+ BLE &ble = BLE::Instance();
+ ble.onEventsToProcess(scheduleBleEventsProcessing);
+ ble.init(bleInitComplete);
+
+ while (true) {
+ eventQueue.dispatch();
+ }
+
+ return 0;
+}