Diff: main.cpp

Revision:

0:e6839efb5545

Child:

1:950af3c28eef

diff -r 000000000000 -r e6839efb5545 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 17 15:49:42 2019 +0000
@@ -0,0 +1,125 @@
+/* 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 "ButtonService.h"
+
+DigitalOut  led1(LED1);
+InterruptIn button(BUTTON1);
+
+const static char     DEVICE_NAME[] = "Button";
+static const uint16_t uuid16_list[] = {ButtonService::BUTTON_SERVICE_UUID};
+
+enum {
+    RELEASED = 0,
+    PRESSED,
+    IDLE
+};
+static uint8_t buttonState = IDLE;
+
+static ButtonService *buttonServicePtr;
+
+void buttonPressedCallback(void)
+{
+    /* Note that the buttonPressedCallback() executes in interrupt context, so it is safer to access
+     * BLE device API from the main thread. */
+    buttonState = PRESSED;
+}
+
+void buttonReleasedCallback(void)
+{
+    /* Note that the buttonReleasedCallback() executes in interrupt context, so it is safer to access
+     * BLE device API from the main thread. */
+    buttonState = RELEASED;
+}
+
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
+{
+    BLE::Instance().gap().startAdvertising();
+}
+
+void periodicCallback(void)
+{
+    led1 = !led1; /* Do blinky on LED1 to indicate system aliveness. */
+}
+
+/**
+ * This function is called when the ble initialization process has failled
+ */
+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);
+
+    /* Setup primary service */
+    buttonServicePtr = new ButtonService(ble, false /* initial value for button pressed */);
+
+    /* 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)
+{
+    led1 = 1;
+    Ticker ticker;
+    ticker.attach(periodicCallback, 1);
+    button.fall(buttonPressedCallback);
+    button.rise(buttonReleasedCallback);
+
+    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) {
+        if (buttonState != IDLE) {
+            buttonServicePtr->updateButtonState(buttonState);
+            buttonState = IDLE;
+        }
+
+        ble.waitForEvent();
+    }
+}