Bluetooth Low Energy / Mbed 2 deprecated BLE_PhysicalWeb

https://github.com/google/physical-web

Dependencies:   BLE_API mbed nRF51822

PhysicalWeb is the general concept of connecting physical devices to the web via BLE.

The core of the PhysicalWeb concept is based around the URI Beacon service. A URI Beacon is an unencrypted broadcast of a Universal Resource Indicator (URI), most commonly in the form of web links. This example is a more advanced form of the UriBeacon Example.

The PhysicalWeb concept is currently being championed by Google so the majority of the documentation is based around the [ https://github.com/google/physical-web | Google PhysicalWeb Github] page.

Here's an introduction to the concept.

There's an Android App to go with it.

As mentioned above, the UriBeacon Service is key to the implementation of PhysicalWeb. The UriBeacon documentation is based out of the Google UriBeacon Github page

Diff: main.cpp

Revision:
8:b816829fb712
Parent:
7:6faec5978fb4
--- a/main.cpp	Mon Dec 01 14:35:47 2014 +0000
+++ b/main.cpp	Wed Dec 03 14:48:28 2014 +0000
@@ -21,25 +21,66 @@
 #include "DeviceInformationService.h"
 
 BLEDevice ble;
+URIBeaconConfigService *uriBeaconConfig;
 
 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
 {
     ble.startAdvertising();
 }
 
+void switchCallback(void)
+{
+    static bool switched = false;
+    if (!switched) {
+        printf("executing switch\r\n");
+        delete uriBeaconConfig;
+        uriBeaconConfig = NULL;
+
+        static const uint8_t BEACON_UUID[] = {0xD8, 0xFE};
+        static const uint8_t urldata[] = {
+            BEACON_UUID[0],
+            BEACON_UUID[1],
+            0x00, // flags
+            0x20, // power
+            0x00, // http://www.
+            'm',
+            'b',
+            'e',
+            'd',
+            0x08, // .".org"
+        };
+
+        ble.shutdown();
+        ble.init();
+
+        ble.clearAdvertisingPayload();
+        ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_UUID, sizeof(BEACON_UUID));
+        ble.accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, urldata, sizeof(urldata));
+
+        ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
+        ble.setAdvertisingInterval(1600); /* 1s; in multiples of 0.625ms. */
+        ble.startAdvertising();
+
+        switched = true;
+    }
+}
+
 int main(void)
 {
+    Ticker ticker;
+    ticker.attach(switchCallback, 30);
+
     ble.init();
     ble.onDisconnection(disconnectionCallback);
 
-    URIBeaconConfigService uriBeaconConfig(ble, "http://www.mbed.org");
-    if (!uriBeaconConfig.configuredSuccessfully()) {
+    uriBeaconConfig = new URIBeaconConfigService(ble, "http://www.mbed.org");
+    if (!uriBeaconConfig->configuredSuccessfully()) {
         error("failed to accommodate URI");
     }
     /* optional use of the API offered by URIBeaconConfigService */
     const int8_t powerLevels[] = {-20, -4, 0, 10};
-    uriBeaconConfig.setTxPowerLevels(powerLevels);
-    uriBeaconConfig.setTxPowerMode(URIBeaconConfigService::TX_POWER_MODE_LOW);
+    uriBeaconConfig->setTxPowerLevels(powerLevels);
+    uriBeaconConfig->setTxPowerMode(URIBeaconConfigService::TX_POWER_MODE_LOW);
 
     /* Setup auxiliary services. */
     DFUService dfu(ble); /* To allow over-the-air firmware udpates. optional. */