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Forum Index : Microcontroller and PC projects : GUI CALIBRATE on PicoMite - help needed
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10610 |
I've never had an issue with GUI calibrate on my breadboarded PicoMite. However, recently Mixtel kindly sent me one of his PCBs and now I can't calibrate to work as others have reported. After manually typing in the calibration parameters touch does work so there is nothing wrong with the wiring. Please can anyone who has worked with a ILI9341 display let me know: If you can get calibrate to work reliably YES/NO What development environment are you using What pins are you using for T_CS and T_IRQ Thanks Edited 2021-09-02 02:31 by matherp |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8297 |
I don't think I've ever had one calibrate reliably (maybe the original backpack did, I can't remember now), so NO. GUI CALIBRATE 0,362,287,897,678 seems to work fine for the unit I've been using with the Backpack. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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Zonker Guru Joined: 18/08/2012 Location: United StatesPosts: 772 |
I remember Peter saying that the SDO pin for the ILI9341 controller would not release the line when de selected... This would effect the data from the touch controller... As soon as I disconnected it, all went as expected with Touch Calibrate...  It could be the issue here also... |
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panky Guru Joined: 02/10/2012 Location: AustraliaPosts: 1116 |
I have a Pico mounted on my own backpack driving an ILI9481, with RTC and ESP8266 mounted. Running 5.07.00b14. Running on external 5V from lab power supply into VSYS on the backpack via a schottky diode. Current draw is 247mA, 165mA with RTC and ESP8266 removed. Problems described below are identical whether RTC or ESP are mounted or not. > option list OPTION CPUSPEED (KHz) 133000 OPTION SDCARD GP15 OPTION SYSTEM SPI GP10,GP11,GP12 OPTION SYSTEM I2C GP20,GP21 OPTION LCDPANEL ILI9481, LANDSCAPE,GP2,GP3,GP4 OPTION RTC AUTO ENABLED OPTION GUI CONTROLS 64 OPTION MEMORY 64000, 96512 OPTION TOUCH GP5,GP6 GUI CALIBRATE 0, 3910, 194, -1311, 859 > On loading new firmware with UPDATE FIRMWARE, GUI CALIBRATE works fine if previously calibrated successfully however, if I disable touch with TOUCH DISABLE then re-enable with OPTION TOUCH GP5,GP6 then try GUI CALIBRATE again, I get a continuous stream of 'Error: Touch not calibrated messages' after I have touched the first target. The only way to stop the error messages is to power off and then on again. If I now enter GUI CALIBRATE 0,3920,210,-1285,868 I am able to complete the calibration and can carry out GUI CALIBRATE with no parameters correctly as many times as I like. The actual parameters are not critical - any values around those above will 'restore' the calibrate operation even though you may get an out of calibration error. You can then successfully complete a GUI CALIBRATE. If I make the first touch the briefest of taps, I can get to the second target but on touching that, the error message 'Error:Touch hardware failure' occurs just once. The system is not locked up in this case and entering GUI CALIBRATE with parameters completes successfully and then I can do GUI CALIBRATE as often as I like with no errors. This is repeatable. I also have the same problem with a Pico with ILI9341. Doug. Edit: Just saw the post with b15 - loaded up and tested as above and exactly the same problem with initial calibration after touch enabled occurs. D. Edited 2021-09-02 10:48 by panky ... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it! |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10610 |
panky Thanks for the excellent diagnostic. Please re-download b15 and try again. I think the version originally posted may have been incorrect as I could download it and get your result. Hopefully now corrected. |
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| panky Guru Joined: 02/10/2012 Location: AustraliaPosts: 1116 |
Excellent Peter, now works exactly as it should:- OPTION TOUCH DISABLE OPTION TOUCH GP5,GP6 GUI CALIBRATE Done. No errors Deviation X = -2, Y = -3 (pixels) > Thanks, Doug. ... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it! |
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