Newhaven Display Forum

Newhaven Products => TFTs => Topic started by: tiro on October 16, 2017, 04:47:53 PM

Title: FT5336 problem with sensitivity and gesture
Post by: tiro on October 16, 2017, 04:47:53 PM
At first... hello all. I try to run display with this CTP but pdf are poor...
Now, small problem. Gesture register still give back 0, no matter what I draw by finger. It's normally?
And here is my big problem. I have three display, one work ok, but other two rages when I only touch it. FT cannot decide that I touch it by one or more finger, similar is with XY position. Is possible to adjust senstivity or change treshold point?

I find also pdf for FT5306 where I see register 0xA6h (firmware). In good module I see here 7, in bad is 6. But I'm not sure that is good way to read this register who I don't see in screen pdf (where is not write directly but is on FT5336)
Title: Re: FT5336 problem with sensitivity and gesture
Post by: Saurabh_B on October 17, 2017, 09:25:50 AM
I'm sorry you are having troubles with the display.

Do you have a datecode printed on those cables for the CTP?
Title: Re: FT5336 problem with sensitivity and gesture
Post by: tiro on October 31, 2017, 12:31:53 PM
Hello Saurabh, this display is not from NHD- you don't have this type what we need.
In this case I can get also a bit help from your side? :(

I have also FT test board and change firmware- without change, CTP still is sick. But I think that when it is connected to this test board, then CTP work better. (some supply issue?).

I look and compare I2C transmission- all is ok and the same. I have no idea ;/
Title: Re: FT5336 problem with sensitivity and gesture
Post by: Saurabh_B on November 01, 2017, 11:16:17 AM
This might be a firmware related issue, i would recommend contacting FTDI for more support. they've worked with more manufacturers than we have and they might have a fix for it.
Title: Re: FT5336 problem with sensitivity and gesture
Post by: tiro on November 01, 2017, 12:20:01 PM
FT5336 is from FocalTech, not from FTDI
Title: Re: FT5336 problem with sensitivity and gesture
Post by: Saurabh_B on November 01, 2017, 04:56:10 PM
Sorry for the misunderstanding.

The firmware on the CTP is often programmed by the display manufacturer.
The different versions on the firmware could be perfectly normal, however you would have to check their application notes to see what might have changed.

More than likely the standard values of the registers will be different. You would need to adjust the threshold & sensitivity of the touch panel.
Title: Re: FT5336 problem with sensitivity and gesture
Post by: tiro on November 02, 2017, 02:57:34 AM
Firmware contains also sensitivity setting, or it must be do separately?
have you seme desryption for calibrate FT5336?. I cannot find any information.

In attachment i give some screen where I still have finger on the screen
1. overview
2. first read (0ms)- put down, so ok...
3. after several frame (50ms)- one finger and contact, so ok.
4. next frame aster 3.png- put down again (bad)
5. some frame. No finger and put up the finger

This bad frame is many in each touch sesion. I show only several for example.

Title: Re: FT5336 problem with sensitivity and gesture
Post by: tiro on November 02, 2017, 02:59:00 AM
I can place only 4 attachment in one post...