Diff: main.cpp

Revision:

0:f17fb1bb4f3a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Nov 14 09:39:14 2015 +0000
@@ -0,0 +1,95 @@
+/* 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 "ble/BLE.h"
+#include "ble/services/URIBeaconConfigService.h"
+#include "ble/services/DFUService.h"
+#include "ble/services/DeviceInformationService.h"
+#include "ConfigParamsPersistence.h"
+
+BLE ble;
+URIBeaconConfigService *uriBeaconConfig;
+
+/**
+ * URIBeaconConfig service can operate in two modes: a configuration mode which
+ * allows a user to update settings over a connection; and normal URIBeacon mode
+ * which involves advertising a URI. Constructing an object from URIBeaconConfig
+ * service sets up advertisements for the configuration mode. It is then up to
+ * the application to switch to URIBeacon mode based on some timeout.
+ *
+ * The following help with this switch.
+ */
+static const int CONFIG_ADVERTISEMENT_TIMEOUT_SECONDS = 5;  // Duration after power-on that config service is available.
+Ticker configAdvertisementTimeoutTicker;
+
+/**
+ * Stop advertising the UriBeaconConfig Service after a delay; and switch to normal URIBeacon.
+ */
+void timeout(void)
+{
+    Gap::GapState_t state;
+    state = ble.getGapState();
+    if (!state.connected) { /* don't switch if we're in a connected state. */
+        uriBeaconConfig->setupURIBeaconAdvertisements();
+        ble.startAdvertising();
+
+        configAdvertisementTimeoutTicker.detach(); /* disable the callback from the timeout Ticker. */
+    }
+}
+
+/**
+ * Callback triggered upon a disconnection event. Needs to re-enable advertisements.
+ */
+void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
+{
+    ble.startAdvertising();
+}
+
+int main(void)
+{
+    ble.init();
+    ble.onDisconnection(disconnectionCallback);
+
+    /*
+     * Load parameters from (platform specific) persistent storage. Parameters
+     * can be set to non-default values while the URIBeacon is in configuration
+     * mode (within the first 60 seconds of power-up). Thereafter, parameters
+     * get copied out to persistent storage before switching to normal URIBeacon
+     * operation.
+     */
+    URIBeaconConfigService::Params_t params;
+    bool fetchedFromPersistentStorage = loadURIBeaconConfigParams(&params);
+
+    /* Initialize a URIBeaconConfig service providing config params, default URI, and power levels. */
+    static URIBeaconConfigService::PowerLevels_t defaultAdvPowerLevels = {-20, -4, 0, 10}; // Values for ADV packets related to firmware levels
+    uriBeaconConfig = new URIBeaconConfigService(ble, params, !fetchedFromPersistentStorage, "http://beacon1", defaultAdvPowerLevels);
+    if (!uriBeaconConfig->configuredSuccessfully()) {
+        error("failed to accommodate URI");
+    }
+    configAdvertisementTimeoutTicker.attach(timeout, CONFIG_ADVERTISEMENT_TIMEOUT_SECONDS);
+
+    // Setup auxiliary services to allow over-the-air firmware updates, etc
+    DFUService dfu(ble);
+    DeviceInformationService deviceInfo(ble, "ARM", "UriBeacon", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
+
+    ble.startAdvertising(); /* Set the whole thing in motion. After this call a GAP central can scan the URIBeaconConfig
+                             * service. This can then be switched to the normal URIBeacon functionality after a timeout. */
+
+    while (true) {
+        ble.waitForEvent();
+    }
+}