Diff: source/bluetooth/MicroBitIBeacon.cpp

Revision:

80:1d4526d816a8

diff -r e4c9170fd9b9 -r 1d4526d816a8 source/bluetooth/MicroBitIBeacon.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/bluetooth/MicroBitIBeacon.cpp	Mon Oct 16 18:35:40 2017 +0000
@@ -0,0 +1,104 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 British Broadcasting Corporation.
+This software is provided by Lancaster University by arrangement with the BBC.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+*/
+
+#include "MicroBitConfig.h"
+#include "MicroBitIBeacon.h"
+
+MicroBitIBeacon *MicroBitIBeacon::_instance = NULL;
+
+/* The underlying Nordic libraries that support BLE do not compile cleanly with the stringent GCC settings we employ.
+ * If we're compiling under GCC, then we suppress any warnings generated from this code (but not the rest of the DAL)
+ * The ARM cc compiler is more tolerant. We don't test __GNUC__ here to detect GCC as ARMCC also typically sets this
+ * as a compatability option, but does not support the options used...
+ */
+#if !defined(__arm)
+#pragma GCC diagnostic ignored "-Wunused-function"
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+
+/*
+ * Return to our predefined compiler settings.
+ */
+#if !defined(__arm)
+#pragma GCC diagnostic pop
+#endif
+
+const int IBEACON_PAYLOAD_LENGTH = 26;
+const uint8_t IBEACON_MANUFACTURER_DATA = 0xff;
+const uint8_t IBEACON_COMPANY_ID[] = {0x4c, 0x00};
+const uint8_t IBEACON_BEACON_TYPE[] = {0x02, 0x15};
+
+MicroBitIBeacon::MicroBitIBeacon() 
+{
+}
+
+MicroBitIBeacon * MicroBitIBeacon::getInstance()
+{
+    if (_instance == 0)
+    _instance = new MicroBitIBeacon;
+
+    return _instance;
+}
+
+/**
+  * Set the content of iBeacon frames
+  *
+  * @param proximityUUID 16-byte proximity UUID
+  *
+  * @param major 2-byte major value
+  *
+  * @param minor 2-byte minor value
+  *
+  * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
+  *
+  * @note The calibratedPower value ranges from -100 to +20 to a resolution of 1. The calibrated power should be binary encoded.
+  * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
+  */
+int MicroBitIBeacon::setParams(BLEDevice* ble, const UUID &proximityUUID, int16_t major, int16_t minor, int8_t calibratedPower)
+{
+    uint8_t rawData[IBEACON_PAYLOAD_LENGTH + 1];
+    
+    // populate iBeacon payload
+    int index = 0;
+    rawData[index++] = IBEACON_COMPANY_ID[0];
+    rawData[index++] = IBEACON_COMPANY_ID[1];
+    rawData[index++] = IBEACON_BEACON_TYPE[0];
+    rawData[index++] = IBEACON_BEACON_TYPE[1];
+    // copy UUID reverse byte order since UUID class is little endian and packet 
+    uint8_t * proxUUID = const_cast<uint8_t*>(proximityUUID.getBaseUUID());
+    for(int ii=proximityUUID.getLen()-1;ii>=0;ii--) {
+        rawData[index++] = *(proxUUID + ii);
+    }
+    rawData[index++] = (major >> 8) & 0xff;
+    rawData[index++] = major & 0xff;
+    rawData[index++] = (minor >> 8) & 0xff;
+    rawData[index++] = minor & 0xff;
+    rawData[index++] = calibratedPower & 0xff;
+    
+    ble_error_t err = ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, rawData, index);
+    
+    return MICROBIT_OK;
+}