Pen down/up respond using i.MX537 BSP from Adeneo

[mdlopez]

Hi,

We are currently implementing a graph review mode for our product which includes two cursors- similar to an oscilloscope. The problem we are having is that we are not able to move the cursor during a continuous pen down event. The cursor moves to the new position only after a pen-up event. The cause of this problem is that the screen is freezing during pen down (not updating until pen up event). We noticed that if the system goes into suspend state and back to On state, this problem disappear. The screen updates during pen down event.

What could be the cause of this problem? We are using the DA9053 PMIC.

Thanks,

Miguel L.

[Bio_TICFSL]

Hi Miguel,

Please verify that you have the next configuration in the ltib

To enable: Dialog DA9053 TSI

select: TOUCHSCREEN_DA9053

Depends on: !S390 [=S390] && INPUT [=y] && INPUT_TOUCHSCREEN [=y] && PMIC_DA9053

[=y]

Location:

-> Device Drivers

-> Input device support

-> Generic input layer (needed for keyboard, mouse, ...) (INPUT [=y])

-> Touchscreens (INPUT_TOUCHSCREEN [=y])

Moreover, check the hardware and ensure TSIREF_GPIO7 is connected to LDO8.

Hope this helps