Slider Sample

[jwestes]

Do you have a sample that shows how the slider works? I found one here:
https://os.mbed.com/users/dreschpe/code/FT800_RGB_demo/file/07f4e7d61702/main.cpp/

I have the slider working, but nothing happens when I touch the slider. I suspect the value is changed back on the next redraw of the screen, so I'm not seeing the change, but I don't know how to work around that. Here is the code I have to draw and track the slider.
EVE_cmd_dl_burst(TAG(2));
EVE_cmd_slider_burst(right - sliderWidth - margin, nextTop + (0 * lineSpacing) + 9, sliderWidth, sliderHeight, 0, surfDevice->MaxExtendTime() * 10, 100);
EVE_cmd_track(right - sliderWidth - margin, nextTop + (0 * lineSpacing) + 9, sliderWidth, sliderHeight, 2);

[RudolphRiedel]

I do not have a full example, I maybe should add one to my demo since this is something less obvious.
I posted this before, somewhere, perhaps on the BRT forum...

In my last project I was using this in TFT_display():
EVE_cmd_dl_burst(TAG(30));
EVE_color_rgb_burst(LIGHT_GREY);
EVE_cmd_slider_burst(50, 270, 700, 20, 0, rpm_request, 550);

And then this in TFT_touch:
switch(tag)
{
case 0:
if(touchtest == 0xffffffff) /* display no longer touched */
{
toggle_lock = 0;

        if(track != 0 )
        {
            EVE_cmd_track(0, 0, 0, 0, 0); // stop tracking
            track = 0;
        }
    }
    break;

...
case 30:
if(track == 0)
{
if(toggle_lock == 0 && active_nad != 0)
{
EVE_cmd_track(20,240,790,70,30); /* start tracking /
track = 10;
toggle_lock = 42;
}
}
else
{
uint32_t tracker_val = EVE_memRead32(REG_TRACKER);
if((tracker_val & 0xff) == 30)
{
tracker_val = tracker_val / 7809031; / -> 550 max */
rpm_request = tracker_val;
}
}
break;
...

[jwestes]

Thanks! It took me a while to get this integrated into the framework I've built around this library, but the sliders now work.