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Forum Index : Microcontroller and PC projects : Touch not working

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MikeO
Senior Member

Joined: 11/09/2011
Location: Australia
Posts: 275
Posted: 09:30pm 13 Nov 2015
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Hi All,
Just reaching out for some quick clues on a NO Touch problem. Have just put together a CGMicroboard with 7" SSD19 LCD . Display is all working OK, but not the touch. I can run and calibrate using the the touch routine OK but that's it Gui Test Touch routine gives me nothing. I am using pin 21 for interrupt and pin 18n for chip select. I have not started to do any fault finding yet just wondered if there were any clues in the fact that the calibrate is OK but no further.

Cheers , thanks for any input.
Codenquilts
 
paceman
Guru

Joined: 07/10/2011
Location: Australia
Posts: 1329
Posted: 01:20am 14 Nov 2015
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Hmmm, there might be a common thread here with various setups and problems with GUI TEST TOUCH.

I had a problem using a 28 pin uMite170, an ILI9341 and V5 of MMBasic with the following: OPTION LCDPANEL ILI9341,L,4,5,24 - the panel set up OK and the 'circles' test worked normally. The TOUCH set up OK as well and also the TOUCH CALIBRATION went normally, however the GUI TEST TOUCH also gave me nothing, i.e. no dot showed on the screen when it was touched with the pen.

Since my panel had been set up upside-down anyway I DISABLED the panel and then set it up with OPTION LCDPANEL ILI9341,RL,4,5,24 - i.e. just changing the orientation to reverse landscape. After going through it all again, including the touch setup as before, the GUI TEST TOUCH now worked, i.e. the dot showed up under the pen.

I haven't repeated all that to confirm it and it does seem a bit strange but try it, i.e. changing your screen orientation to reverse and see if you get something.

Greg
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10406
Posted: 01:36am 14 Nov 2015
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What versions of the firmware?
 
paceman
Guru

Joined: 07/10/2011
Location: Australia
Posts: 1329
Posted: 02:28am 14 Nov 2015
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V5 for me Peter.

Greg
 
MikeO
Senior Member

Joined: 11/09/2011
Location: Australia
Posts: 275
Posted: 07:35am 14 Nov 2015
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I was using b37 on the plus.
option list
OPTION LCDPANEL SSD1963_7, RLANDSCAPE
OPTION TOUCH 18, 21, 29
I have tried the reverse landscape which made no difference, the touch test still not working also the demonstration program will not work in touch but display is OK.
I may try going backwards with the firmware in the morning.
Mike

Edit: Sorry, Gui Touch test was still OK but nothing after that.Edited by MikeO 2015-11-15
Codenquilts
 
MikeO
Senior Member

Joined: 11/09/2011
Location: Australia
Posts: 275
Posted: 03:50pm 14 Nov 2015
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OK all fixed now I had a hardware problem with the board header on the pcb for pin5 (T_DIN) so I guess there was no scanning.
However I have noticed that the GUI CALIBRATE has an issue in that it does not matter where you tap! it still reports Calibrate as being OK, 4 taps in the same place will report as ok, it isn't of course, you have to enter in the 4 places for a correct calibration.
Thanks Greg for your suggestion, was worth the check.

Mike
Codenquilts
 
Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9643
Posted: 04:05pm 14 Nov 2015
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Thanks for letting everyone know.
I was watching this thread, but did not have any idea why it would not be working, and I have used the 7" parallel LCD's, and the touch always worked. As I had nothing to contribute, I did not post, but I am glad you got it sorted.

Enjoy!

I'll be watching to see what others say of the calibrate issue you seem to have found.
Smoke makes things work. When the smoke gets out, it stops!
 
paceman
Guru

Joined: 07/10/2011
Location: Australia
Posts: 1329
Posted: 09:39pm 14 Nov 2015
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Well, I guessed since Mike had a valid reason for his GUI TEST TOUCH problem, I should check whether I could reproduce my problem with it. I couldn't - it worked fine on my configuration too (28pin uM2/170, ILI9341 2.4", MMBasic V5) using both the LANDSCAPE and RLANDSCAPE orientations. TOUCH and LCDPANEL were DISABLED between the two test sets - but only after forgetting to do so for each of them and getting the appropriate two ERROR complaints I deserved!

My apologies for any time you might have spent on this Peter (and Mike) - I don't know what stuffed things up the first time when my GUI TEST TOUCH didn't work but the possibilities are many!

Greg
 
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