Diff: main.cpp

Revision:

0:fca875b40c8a

Child:

1:d9a3dcb8c87c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 09 18:14:03 2014 +0000
@@ -0,0 +1,81 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 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.h"
+#include "BLEDevice.h"
+
+BLEDevice ble;
+
+#define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
+                               * it will have an impact on code-size and power consumption. */
+
+#if NEED_CONSOLE_OUTPUT
+Serial  pc(USBTX, USBRX);
+#define DEBUG(...) { pc.printf(__VA_ARGS__); }
+#else
+#define DEBUG(...) /* nothing */
+#endif /* #if NEED_CONSOLE_OUTPUT */
+
+/*
+ * For this demo application, populate the beacon advertisement payload
+ * with 2 AD structures: FLAG and MSD (manufacturer specific data).
+ *
+ * Reference:
+ *  Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18
+ */
+
+/*
+ * The Beacon payload (encapsulated within the MSD advertising data structure)
+ * has the following composition:
+ * 128-Bit UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
+ * Major/Minor  = 0000 / 0000
+ * Tx Power     = C8
+ */
+const uint8_t beaconPayload[] = {
+    0x4C, 0x00, // Company identifier code (0x004C == Apple)
+    0x02,       // ID
+    0x15,       // length of the remaining payload
+    0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, // location UUID
+    0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61,
+    0x00, 0x00, // the major value to differentiate a location
+    0x00, 0x00, // the minor value to differentiate a location
+    0xC8        // 2's complement of the Tx power (-56dB)
+};
+
+int main(void)
+{
+    DEBUG("Initialising BTLE transport\n\r");
+    ble.init();
+
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, beaconPayload, sizeof(beaconPayload));
+
+    ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
+    ble.setAdvertisingInterval(1600); /* 1s; in multiples of 0.625ms. */
+    ble.startAdvertising();
+
+    for (;;) {
+        ble.waitForEvent();
+    }
+
+    // An alternative to the above:
+    //
+    // DigitalOut mainloopLED(LED1);
+    // for (;;) {
+    //     mainloopLED = !mainloopLED;
+    //     ble.waitForEvent();
+    // }
+}