Diff: main.cpp

Revision:

0:d44120452d31

Child:

1:7623f55dd990

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Aug 06 15:16:48 2019 +0000
@@ -0,0 +1,118 @@
+/*
+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 "MicroBit.h"
+
+const static char  DEVICE_NAME[] = "MY_MICROBIT";
+static volatile bool  triggerSensorPolling = false;
+
+MicroBit uBit;
+Ticker ticker;
+Serial  pc(USBTX, USBRX);
+
+static Gap::ConnectionParams_t connectionParams;
+
+/* Battery Level Service */
+uint8_t            batt = 100;     /* Battery level */
+GattCharacteristic battLevel ( GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, 
+                                 (uint8_t *)batt, 1, 1,
+                                 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
+GattCharacteristic *battChars[] = {&battLevel, };
+GattService        battService(GattService::UUID_BATTERY_SERVICE, battChars,
+                                sizeof(battChars) / sizeof(GattCharacteristic *));
+uint16_t             uuid16_list[] = {GattService::UUID_BATTERY_SERVICE};
+
+void onConnectionCallback(const Gap::ConnectionCallbackParams_t *params)
+{
+    pc.printf("connected. Got handle %u\r\n", params->handle);
+
+    connectionParams.slaveLatency = 1;
+    if (uBit.ble->gap().updateConnectionParams(params->handle, &connectionParams) != BLE_ERROR_NONE) {
+        pc.printf("failed to update connection paramter\r\n");
+    }
+}
+
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
+{
+    pc.printf("Disconnected handle %u, reason %u\r\n", params->handle, params->reason);
+    pc.printf("Restarting the advertising process\r\n");
+
+    uBit.ble->gap().startAdvertising();
+}
+
+void periodicCallback(void)
+{
+    triggerSensorPolling = true;
+}
+
+int main()
+{
+    // Initialise the micro:bit runtime.
+    pc.printf("Initialising MicroBit\r\n");
+    uBit.ble = new BLEDevice();
+    uBit.init();    
+    uBit.ble->init();
+    pc.printf("Init done\r\n");
+
+    uBit.ble->gap().onConnection(onConnectionCallback);
+    uBit.ble->gap().onDisconnection(disconnectionCallback);
+
+    /* setup advertising */
+    uBit.ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    uBit.ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t*)uuid16_list, sizeof(uuid16_list));
+    uBit.ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_REMOTE_CONTROL);
+    uBit.ble->accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+    uBit.ble->gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    uBit.ble->setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
+    uBit.ble->startAdvertising();
+    pc.printf("Start Advertising\r\n");
+    
+    uBit.ble->gattServer().addService(battService);
+
+    ticker.attach(periodicCallback, 1);
+
+    // Insert your code here!
+    while(1)
+    {
+        //uBit.display.scroll("ADV");
+        if (triggerSensorPolling) {
+            triggerSensorPolling = false;
+            
+            // Decrement the battery level.
+            batt <=50 ? batt=100 : batt--;
+            pc.printf("Batt is %u\r\n", batt);
+      
+            uBit.ble->gattServer().write(battLevel.getValueAttribute().getHandle(), (uint8_t *)&batt, sizeof(batt));             //Mod
+        } else {
+            uBit.ble->waitForEvent();
+        }
+    }
+    
+    // If main exits, there may still be other fibers running or registered event handlers etc.
+    // Simply release this fiber, which will mean we enter the scheduler. Worse case, we then
+    // sit in the idle task forever, in a power efficient sleep.
+    //release_fiber();
+}
+