СС2541 KeyFob sending data to Android using button

Ruslan Akmalov

Other Parts Discussed in Thread: CC2541, CC2650

Hello, my name is Ruslan! Could someone tell to me, how send data from KeyFob to Android or Btool, using button in Keyfob? Which function should i use? I need for the KeyFob send value of battery level with the push button, without request from Master.

over 9 years ago

0 Johan Gustafsson over 9 years ago

TI__Expert 3240 points

Hi Ruslan,

In the KeyFob project we have included a battery service that, so most of this functionality is already in place.
In KeyFobApp_ProcessEvent() take a look at this section:

  if ( events & KFD_BATTERY_CHECK_EVT )
  {
    // Restart timer
    if ( BATTERY_CHECK_PERIOD )
    {
      osal_start_timerEx( keyfobapp_TaskID, KFD_BATTERY_CHECK_EVT, BATTERY_CHECK_PERIOD );
    }

    // perform battery level check
    Batt_MeasLevel( );

    return (events ^ KFD_BATTERY_CHECK_EVT);
  }

The only difference here is that this is done on a fixed interval set by a timer, and the notification is only sent when the battery status has changed,
have a look at Batt_MeasLevel().

For the handling of the keys, you can start by looking at keyfobapp_HandleKeys().

Regards,
Johan

0 Ruslan Akmalov over 9 years ago in reply to Johan Gustafsson

Prodigy 100 points

Hi, Johan! Excuse me, but which function should i use for transmitting data over BLE module from peripherial to central?

0 Russell Ak over 9 years ago in reply to Johan Gustafsson

Intellectual 625 points

Voltage and temperature read of a built-in CC2541 sensor or an external sensor?

0 Johan Gustafsson over 9 years ago in reply to Russell Ak

TI__Expert 3240 points

Hi,

I can recommend you to take a look at this tutorial, this is however for the CC2650 HW and SW, bu the main concepts in how to
to create a custom service to enable to send sensor data applies to the CC2541 as well:

Regards,
Johan

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СС2541 KeyFob sending data to Android using button