File content as of revision 0:a4de55cab4e2:

#include <events/mbed_events.h>
#include <mbed.h>
#include "ble/BLE.h"
#include "ble/Gap.h"
#include "ble/services/BatteryService.h"
#include "MPU6050.h"
#include "MPUService.h"

DigitalOut alivenessLED(LED1, 0);
DigitalOut actuatedLED(LED2, 0);
Serial pc(p6, p8);
MPU6050 mpu6050;
static MPUService *mpuServicePtr;
static float x =0.0;
const static char     DEVICE_NAME[] = "MPU";
static const uint16_t uuid16_list[] = {MPUService::MPU_SERVICE_UUID};
static EventQueue eventQueue(/* event count */ 10 * /* event size */ 32);
//InterruptIn button(BUTTON1);

void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context)
{
    BLE& ble = BLE::Instance();
    eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
}

void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
{
    (void) params;
    BLE::Instance().gap().startAdvertising();
}
void onBleInitError(BLE &ble, ble_error_t error)
{
    /* Initialization error handling should go here */
}
void updateSensorValue() {
    x=x+0.1;
    alivenessLED = !alivenessLED; 
    mpuServicePtr->updateSensorValue(x);
}
void periodicCallback(void)
{
    if (BLE::Instance().getGapState().connected) {
        eventQueue.call(updateSensorValue);
    }
}
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);
    mpuServicePtr = new MPUService(ble, x);

    /* 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()
{
    eventQueue.call_every(500, periodicCallback);
    BLE& ble = BLE::Instance();
    ble.onEventsToProcess(scheduleBleEventsProcessing);
    ble.init(bleInitComplete);  
    eventQueue.dispatch_forever();
    return 0;
}