Revision 0:1129cbb9e3c9, committed 2018-08-07

Comitter:

RalphF

Date:

Tue Aug 07 16:49:34 2018 +0000

Commit message:

Standard BLE LED example built for Mbed OS 5.9.1. Tested with nRF52840-DK.

Changed in this revision

diff -r 000000000000 -r 1129cbb9e3c9 LEDService.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LEDService.h	Tue Aug 07 16:49:34 2018 +0000
@@ -0,0 +1,42 @@
+/* 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.
+ */
+
+#ifndef __BLE_LED_SERVICE_H__
+#define __BLE_LED_SERVICE_H__
+
+class LEDService {
+public:
+    const static uint16_t LED_SERVICE_UUID              = 0xA000;
+    const static uint16_t LED_STATE_CHARACTERISTIC_UUID = 0xA001;
+
+    LEDService(BLEDevice &_ble, bool initialValueForLEDCharacteristic) :
+        ble(_ble), ledState(LED_STATE_CHARACTERISTIC_UUID, &initialValueForLEDCharacteristic)
+    {
+        GattCharacteristic *charTable[] = {&ledState};
+        GattService         ledService(LED_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
+        ble.addService(ledService);
+    }
+
+    GattAttribute::Handle_t getValueHandle() const {
+        return ledState.getValueHandle();
+    }
+
+private:
+    BLEDevice                         &ble;
+    ReadWriteGattCharacteristic<bool>  ledState;
+};
+
+#endif /* #ifndef __BLE_LED_SERVICE_H__ */

diff -r 000000000000 -r 1129cbb9e3c9 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Aug 07 16:49:34 2018 +0000
@@ -0,0 +1,109 @@
+/* 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"
+
+DigitalOut alivenessLED(LED1, 0);
+DigitalOut actuatedLED(LED2, 0);
+
+const static char     DEVICE_NAME[] = "LED";
+static const uint16_t uuid16_list[] = {LEDService::LED_SERVICE_UUID};
+
+LEDService *ledServicePtr;
+
+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);
+    }
+}
+
+/**
+ * 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);
+
+    bool initialValueForLEDCharacteristic = false;
+    ledServicePtr = new LEDService(ble, initialValueForLEDCharacteristic);
+
+    /* 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();
+    }
+}

diff -r 000000000000 -r 1129cbb9e3c9 mbed-os.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Tue Aug 07 16:49:34 2018 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#03196b244ee00fc748cd4dbfa83b26f3fc0f376b