Diff: main.cpp

Revision:

0:21352e62003f

Child:

1:b10a8955c2fc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Feb 14 19:18:44 2018 +0000
@@ -0,0 +1,126 @@
+/* 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 "LEDService.h"
+#include "ADCService.h"
+
+/* 
+ * All the LEDs on the micro:bit are part of the LED Matrix,
+ * In order to get simple blinking behaviour, we set column 0
+ * to be permanently at ground. If you want to use the LEDs as
+ * a screen, there is a display driver in the micro:bit 'DAL',
+ */
+DigitalOut col1(P0_4, 0);
+DigitalOut alivenessLED(P0_13, 0);
+DigitalOut actuatedLED(P0_14, 0);
+AnalogIn ADC(P0_3);
+uint16_t ADCResult=0;
+const static char     DEVICE_NAME[] = "BBC_LED";
+static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID,ADCService::ADC_SERVICE_UUID};
+
+LEDService *ledServicePtr;
+ADCService *ADCServicePtr;
+Ticker ticker;
+
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
+{
+    BLE::Instance().gap().startAdvertising();
+}
+
+void periodicCallback(void)
+{
+    alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */
+}
+
+/**
+ * This callback allows the LEDService to receive updates to the ledState Characteristic.
+ *
+ * @param[in] params
+ *     Information about the characterisitc being updated.
+ */
+void onDataWrittenCallback(const GattWriteCallbackParams *params) {
+    if ((params->handle == ledServicePtr->getValueHandle()) && (params->len == 1)) {
+        actuatedLED = *(params->data);
+    }
+}
+
+void onDataReadCallback(const GattReadCallbackParams *params) {
+    ADCResult=ADC.read_u16();
+}
+/**
+ * This function is called when the ble initialization process has failed
+ */
+void onBleInitError(BLE &ble, ble_error_t error)
+{
+    /* Initialization error handling should go here */
+}
+
+/**
+ * Callback triggered when the ble initialization process has finished
+ */
+void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
+{
+    BLE&        ble   = params->ble;
+    ble_error_t error = params->error;
+
+    if (error != BLE_ERROR_NONE) {
+        /* In case of error, forward the error handling to onBleInitError */
+        onBleInitError(ble, error);
+        return;
+    }
+
+    /* Ensure that it is the default instance of BLE */
+    if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
+        return;
+    }
+ 
+    ble.gap().onDisconnection(disconnectionCallback);
+    ble.gattServer().onDataWritten(onDataWrittenCallback);
+    ble.gattServer().onDataRead(onDataReadCallback);
+
+    bool initialValueForLEDCharacteristic = false;
+    ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic);
+    ADCServicePtr = new ADCService(ble,ADCResult);
+
+    /* setup advertising */
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+    ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
+    ble.gap().startAdvertising();
+}
+
+int main(void)
+{
+    ticker.attach(periodicCallback, 1); /* Blink LED every second */
+
+    BLE &ble = BLE::Instance();
+    ble.init(bleInitComplete);
+
+    /* SpinWait for initialization to complete. This is necessary because the
+     * BLE object is used in the main loop below. */
+    while (ble.hasInitialized()  == false) { /* spin loop */ }
+
+    while (true) {
+        ble.waitForEvent();
+        ADCResult=ADC.read_u16();
+        ADCServicePtr->updateADCValue(ADCResult);
+        
+    }
+}