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Forum Index : Microcontroller and PC projects : PicoMite and "LCD Display as the Console Output"

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Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 949
Posted: 02:11pm 12 Jan 2023
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Hi!
Little question:
I have an "Pico-ResTouch-LCD-3.5" and would like to use it as Console Output.
The manual says:
  Quote  There are three SPI displays that can also be used as console devices. ILI9341 (but only if MISO is connected),
ILI9488/86 (connect MISO with a 680? series resistor as the controller does not tri-state its output properly)
and the 2.8" Waveshare ST7789.

When I enter the command "OPTION LCDPANEL CONSOLE" I get this error message:
  Quote  > OPTION COLOURCODE ON
> OPTION SYSTEM SPI GP10,GP11,GP12
> OPTION SDCARD GP22
> OPTION SYSTEM I2C GP26,GP27
> OPTION LCDPANEL ILI9488W, RLANDSCAPE,GP8,GP15,GP9,GP13
> OPTION TOUCH GP16,GP17
> GUI CALIBRATE 0, 251, 3862, 1278, -854
> OPTION LCDPANEL CONSOLE
Error : Display does not support console

The display has a ILI9488W controller. Is the controller really that different from the ILI9488 or am I doing something wrong???  

Thanks!

Frank
 
JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4044
Posted: 03:32pm 12 Jan 2023
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It really is, due to the way it's (not) connected.

(MISO or some such is absent - previous thread somewhere.)

John
 
Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 949
Posted: 03:50pm 12 Jan 2023
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https://www.waveshare.com/wiki/Pico-ResTouch-LCD-3.5
It says that MISO would be connected to GP12...

Frank
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7937
Posted: 04:52pm 12 Jan 2023
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It hasn't got a proper SPI interface. It simulates one using shift registers so MISO for the display can't work as it hasn't got one. MISO for touch and the SD card is present though.
Edited 2023-01-13 02:55 by Mixtel90
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
vegipete

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Joined: 29/01/2013
Location: Canada
Posts: 1132
Posted: 05:13pm 12 Jan 2023
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  Frank N. Furter said  https://www.waveshare.com/wiki/Pico-ResTouch-LCD-3.5
It says that MISO would be connected to GP12...

MISO may be connected to GP12, but alas, that is unrelated to the LCD. The LCD is used in 16 bit parallel mode, with 'HC4094 shift registers to turn MOSI into parallel. The RDX line is pulled high so some serious hacking would be required to get Read mode to work.
Visit Vegipete's *Mite Library for cool programs.
 
Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 949
Posted: 07:26am 13 Jan 2023
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Thanks for the answers! BAD! - the display would have been quite nice (it has a good resolution and a very nice picture quality) and you just had to put it on...

Frank
 
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