Diff: main.cpp

Revision:

0:d01bde90471b

Child:

1:2deb859ed1a3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 02 10:34:01 2014 +0000
@@ -0,0 +1,96 @@
+/* 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"
+#include "HealthThermometerService.h"
+#include "DHT.h"
+
+BLEDevice  ble;
+DigitalOut led1(LED1);
+DHT        sensor(D10, DHT11);
+
+#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 */
+
+const static char     DEVICE_NAME[]        = "Therm";
+static const uint16_t uuid16_list[]        = {GattService::UUID_HEALTH_THERMOMETER_SERVICE};
+static volatile bool  triggerSensorPolling = false;
+
+void disconnectionCallback(Gap::Handle_t handle)
+{
+    DEBUG("Disconnected handle %u!\n\r", handle);
+    DEBUG("Restarting the advertising process\n\r");
+    ble.startAdvertising();
+}
+
+void periodicCallback(void)
+{
+    led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
+
+    /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
+     * heavy-weight sensor polling from the main thread. */
+    triggerSensorPolling = true;
+}
+
+int main(void)
+{
+    led1 = 1;
+    Ticker ticker;
+    ticker.attach(periodicCallback, 1);
+
+    DEBUG("Initialising the nRF51822\n\r");
+    ble.init();
+    ble.onDisconnection(disconnectionCallback);
+
+    /* setup advertising */
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::THERMOMETER_EAR);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+    ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    ble.setAdvertisingInterval(1600); /* 1000ms; in multiples of 0.625ms. */
+    ble.startAdvertising();
+
+    float initialTemperature = 39.6;
+    HealthThermometerService thermometerService(ble, initialTemperature, HealthThermometerService::LOCATION_EAR);
+
+    int error = 0;
+    float c = 0.0f;
+
+    while (true) {
+        if (triggerSensorPolling) {
+            triggerSensorPolling = false;
+
+            /* Do blocking calls or whatever is necessary for sensor polling. */
+            /* In our case, we simply update the dummy HRM measurement. */
+            error = sensor.readData();
+            if (!error) {
+                c = sensor.ReadTemperature(CELCIUS);
+                thermometerService.updateTemperature(c);
+            }
+        } else {
+            ble.waitForEvent();
+        }
+    }
+}