Working CTSU Example for SK S7 for SSP1.1.0?

I would like to ask, whether there is a working example available, which shows the CTSU functionality of SK-S7 board.

I've ported the actual S1 sample and added the configuration files of the S7 SK board, I've found in an older post here in the forum.

The project compiles without errors, but inside the following Configurator generated file, this call:


    ssp_err_g_sf_touch_button0 = g_sf_touch_button0.p_api->open( g_sf_touch_button0.p_ctrl, g_sf_touch_button0.p_cfg);


    if (SSP_SUCCESS != ssp_err_g_sf_touch_button0)
        {
        while (1);
        }
 

always returns "SSP_ERR_CTSU_OFFSET_ADJUSTMENT_FAILED";


From my point of view the issue CTSU seems to be a bit more complex, especially the coherences between hardware and software/framework.

Unfortunately I couldn't find a more detailed App-Note describing this coherence, due to that a working sample would be a really great help.


Any help is very appreciated.

Thank you and best regards
Ralph