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Forum Index : Microcontroller and PC projects : PicoMite Firmware Release Version 6.02.01

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toml_12953
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Posted: 06:09pm 02 Apr 2026
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  matherp said  Missed the word console


I type this in:

OPTION LCDPANEL NOCONSOLE
OPTION LCDPANEL CONSOLE 1,RGB(green),RGB(BLACK)


and still NOSCROLL appears in the OPTION LIST. It looks like the default for PicoCalc is NOSCROLL but I can't change it back to anything else.
Edited 2026-04-03 04:10 by toml_12953
 
Fede
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Posted: 08:07pm 02 Apr 2026
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In case it helps...

I've copied this from the manual:

'On displays where the framebuffer cannot be read, the firmware will automatically set the NOSCROLL option.'

Best regards.
 
phil99

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Posted: 09:15pm 02 Apr 2026
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That might be something Peter can fix.
  matherp said  PicoMiteV6.02.01RC2

Fixes bug in reading from a ST7365P LCD controller as used in the PICOCALC
Improves validation of FRAMEBUFFER COPY when using LCD displays


If you want to make sure the PicoCalc display can be read from put an image on the screen and BLIT a portion to another location. If the result is a blank rectangle reading doesn't work.

Or try this command-line colour counter. It reads the colours back from a pixel.
> clear : dim a$(2)=(" Blues"," Greens"," Reds") : dim integer b, c, n
> for b=0 to 2:n=0:for c=0 to 255:pixel 9,9,c<<b*8:if pixel(9,9)=c<<b*8 then:inc n:endif:next:?n;a$(b):next
32 Blues
64 Greens
32 Reds

Zeros would indicate it can't be read from.
Edited 2026-04-03 07:31 by phil99
 
toml_12953
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Posted: 09:56pm 02 Apr 2026
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  phil99 said  That might be something Peter can fix.
  matherp said  PicoMiteV6.02.01RC2

Fixes bug in reading from a ST7365P LCD controller as used in the PICOCALC
Improves validation of FRAMEBUFFER COPY when using LCD displays


If you want to make sure the PicoCalc display can be read from put an image on the screen and BLIT a portion to another location. If the result is a blank rectangle reading doesn't work.

Or try this command-line colour counter. It reads the colours back from a pixel.
> clear : dim a$(2)=(" Blues"," Greens"," Reds") : dim integer b, c, n
> for b=0 to 2:n=0:for c=0 to 255:pixel 9,9,c<<b*8:if pixel(9,9)=c<<b*8 then:inc n:endif:next:?n;a$(b):next
32 Blues
64 Greens
32 Reds

Zeros would indicate it can't be read from.


Thanks for that. This is weird. I get
2 Blues
2 Greens
2 Reds


Nowhere near what you get. What does that mean? I thought it should be a binary condition - either it can read from a framebuffer or it can't.
 
phil99

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Posted: 10:06pm 02 Apr 2026
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Perhaps the PicoCalc is using a RGB111 monochrome colour scheme .
My test was on a regular Pico LCD with a ST7796S which uses RGB565.
An ILI9488 would have returned 64, 64, 64 as it is RGB666.

Edit.
Values greater than 1 at least show it can be read from so scrolling should be possible.
All 1s would indicate just one returned colour matches what was sent to the screen, so it was really getting nothing back.

You could also try the BLIT test.
> GUI TEST LCDPANEL
'<Ctrl-C>
> BLIT READ #1, 1, 1, 150, 150
> BLIT WRITE #1, 150, 90

If the top left square gets copied faithfully then reading was successful
.
Edited 2026-04-03 08:49 by phil99
 
toml_12953
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Posted: 04:03am 03 Apr 2026
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  phil99 said  Perhaps the PicoCalc is using a RGB111 monochrome colour scheme .
My test was on a regular Pico LCD with a ST7796S which uses RGB565.
An ILI9488 would have returned 64, 64, 64 as it is RGB666.

Edit.
Values greater than 1 at least show it can be read from so scrolling should be possible.
All 1s would indicate just one returned colour matches what was sent to the screen, so it was really getting nothing back.

You could also try the BLIT test.
> GUI TEST LCDPANEL
'<Ctrl-C>
> BLIT READ #1, 1, 1, 150, 150
> BLIT WRITE #1, 150, 90

If the top left square gets copied faithfully then reading was successful
.


The reading was successful. All the colors are correct in the new square. I wonder why the OPTION command doesn't allow me to get rid of the NOSCROLL parameter, then.
 
Mixtel90

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Posted: 07:28am 03 Apr 2026
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Is the display SPI or parallel? If it's SPI then scrolling isn't recommended anyway. It's regarded as being too slow to use sensibly. That's why NOSCROLL was devised, so that SPI displays could be used for the console.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
matherp
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Posted: 08:25am 03 Apr 2026
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Lots of speculation and we don't even know what toml is running on or what version of the firmware.
For the avoidance of doubt. The PicoCalc firmware built into MMBasic uses the ST7365P driver and writes in RGB565. The PicoCalc I tested on works perfectly with BLIT so reading from the framebuffer works. The display is in portatrait mode and uses H/W scrolling. I haven't got a PicoCalc available and have no idea what the OPTION list reports but NOSCROLL is irrelevant as H/W scrolling doesn't require to read from the framebuffer. To configure a PicoCalc correctly nuke the flash and load the latest firmware. It will then automatically configure itself corectly - nothing else should then be changed.
Edited 2026-04-03 18:26 by matherp
 
toml_12953
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Posted: 11:44am 03 Apr 2026
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  matherp said  Lots of speculation and we don't even know what toml is running on or what version of the firmware.
For the avoidance of doubt. The PicoCalc firmware built into MMBasic uses the ST7365P driver and writes in RGB565. The PicoCalc I tested on works perfectly with BLIT so reading from the framebuffer works. The display is in portatrait mode and uses H/W scrolling. I haven't got a PicoCalc available and have no idea what the OPTION list reports but NOSCROLL is irrelevant as H/W scrolling doesn't require to read from the framebuffer. To configure a PicoCalc correctly nuke the flash and load the latest firmware. It will then automatically configure itself corectly - nothing else should then be changed.


I figured since I posted into the V6.02.01 final thread everyone would know that that's what I'm running. Here's my OPTION LIST when I first load the firmware:
PicoMite MMBasic RP2350B V6.02.01
OPTION SERIAL CONSOLE COM1,GP0,GP1,BOTH
OPTION LCD SPI GP10,GP11,GP12
OPTION SYSTEM I2C GP6,GP7, SLOW
OPTION BAUDRATE 19200
OPTION FLASH SIZE 16777216
OPTION LIBRARY_FLASH_SIZE  52000
OPTION COLOURCODE ON
OPTION CONTINUATION LINES ON
OPTION CASE UPPER
OPTION TAB 8
OPTION DEFAULT COLOURS GREEN, BLACK
OPTION KEYBOARD PICOCALC
OPTION PICO OFF
OPTION CPUSPEED (KHz) 384000
OPTION LCDPANEL CONSOLE ,, FF00
OPTION DISPLAY 26, 40
OPTION LCDPANEL ST7365P, PORTRAIT,GP14,GP15,GP13
OPTION BACKLIGHT LCD 64
OPTION SDCARD GP17, GP18, GP19, GP16
OPTION AUDIO GP26,GP27', ON PWM CHANNEL 5
OPTION RTC AUTO ENABLE
OPTION MODBUFF ENABLE  192
OPTION PLATFORM PicoCalc
OPTION PSRAM PIN GP47


If I try to change the LCDPANEL CONSOLE line at all, NOSCROLL is added and nothing I can do will turn it off.
Edited 2026-04-03 21:44 by toml_12953

Footnote added 2026-04-03 22:03 by toml_12953
The reason I want to change the LCDPANEL CONSOLE line is because I want to change the default foreground color to amber - RGB(255,191,0) and I can't do that via the OPTION DEFAULT COLOURS line. That line restricts me to the color names, none of which is amber. If OPTION DEFAULT COLOURS allowed RGB values, then I wouldn't need to mess with the OPTION LCDPANEL CONSOLE line.
 
mozzie
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Posted: 11:45am 03 Apr 2026
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G'day Peter,
Just for reference, can you please detail how the PicoMite firmware detects it is running in a PicoCalc?

Regards,
Lyle.
 
matherp
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Posted: 11:59am 03 Apr 2026
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  Quote  If I try to change the LCDPANEL CONSOLE line at all, NOSCROLL is added and nothing I can do will turn it off.

The PicoCalc is a fixed config and isn't supposed to be changed. The code does not attempt to fully integrate the PicoCalc config with normal functionality.
  Quote  Just for reference, can you please detail how the PicoMite firmware detects it is running in a PicoCalc?

For the 4 variants of the firmware that could be used on the PicoCalc iff no relevant options are set, as part of intialisation, the firmware tries to read the Pico battery level. If that returns without an I2C error then the PicoCalc is configured
 
Frank N. Furter
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Posted: 08:10pm 03 Apr 2026
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  toml_12953 said  Footnote added 2026-04-03 22:03 by toml_12953
The reason I want to change the LCDPANEL CONSOLE line is because I want to change the default foreground color to amber - RGB(255,191,0) and I can't do that via the OPTION DEFAULT COLOURS line. That line restricts me to the color names, none of which is amber. If OPTION DEFAULT COLOURS allowed RGB values, then I wouldn't need to mess with the OPTION LCDPANEL CONSOLE line.


Try "OPTION LCDPANEL CONSOLE 1,16760576,0" - that worked on my PicoCalc!

Frank
 
toml_12953
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Posted: 11:21pm 03 Apr 2026
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  Frank N. Furter said  
  toml_12953 said  Footnote added 2026-04-03 22:03 by toml_12953
The reason I want to change the LCDPANEL CONSOLE line is because I want to change the default foreground color to amber - RGB(255,191,0) and I can't do that via the OPTION DEFAULT COLOURS line. That line restricts me to the color names, none of which is amber. If OPTION DEFAULT COLOURS allowed RGB values, then I wouldn't need to mess with the OPTION LCDPANEL CONSOLE line.


Try "OPTION LCDPANEL CONSOLE 1,16760576,0" - that worked on my PicoCalc!

Frank


After you did that, did you have NOSCROLL appear at the end of the line? On mine whenever I change OPTION LCDPANEL, I get NOSCROLL added, which I don't want. The PicoCalc LCD is fast enough to scroll the display rather than clearing it after every screen.
 
toml_12953
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Posted: 12:07am 04 Apr 2026
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  matherp said  Lots of speculation and we don't even know what toml is running on or what version of the firmware.
For the avoidance of doubt. The PicoCalc firmware built into MMBasic uses the ST7365P driver and writes in RGB565. The PicoCalc I tested on works perfectly with BLIT so reading from the framebuffer works. The display is in portatrait mode and uses H/W scrolling. I haven't got a PicoCalc available and have no idea what the OPTION list reports but NOSCROLL is irrelevant as H/W scrolling doesn't require to read from the framebuffer. To configure a PicoCalc correctly nuke the flash and load the latest firmware. It will then automatically configure itself corectly - nothing else should then be changed.


I found a fix. In MM_Misc.c, line 5425 doesn't check for the display type ST7365P, which is what the PicoCalc has. I added a test for that and, voila! NOSCROLL is no longer added automatically. This is the change I made:

if (!(Option.DISPLAY_TYPE == ST7365P || Option.DISPLAY_TYPE == ST7789B || Option.DISPLAY_TYPE == ILI9488 || Option.DISPLAY_TYPE == ST7796SP || Option.DISPLAY_TYPE == ST7796S || Option.DISPLAY_TYPE == ILI9488P || Option.DISPLAY_TYPE == ILI9341 || Option.DISPLAY_TYPE >= VGADISPLAY))
           Option.NoScroll = 1;
 
Frank N. Furter
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Posted: 10:54am 04 Apr 2026
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  toml_12953 said  After you did that, did you have NOSCROLL appear at the end of the line? On mine whenever I change OPTION LCDPANEL, I get NOSCROLL added, which I don't want. The PicoCalc LCD is fast enough to scroll the display rather than clearing it after every screen.

Yes, it's the same for me. But so far, I haven't noticed any difference in how the display behaves.

Frank
 
phil99

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Posted: 11:41am 04 Apr 2026
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That matches what Peter wrote.
  Quote  The display is in portrait mode and uses H/W scrolling. I haven't got a PicoCalc available and have no idea what the OPTION list reports but NOSCROLL is irrelevant as H/W scrolling doesn't require to read from the framebuffer.
 
toml_12953
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  phil99 said  That matches what Peter wrote.
  Quote  The display is in portrait mode and uses H/W scrolling. I haven't got a PicoCalc available and have no idea what the OPTION list reports but NOSCROLL is irrelevant as H/W scrolling doesn't require to read from the framebuffer.


If you mean NOSCROLL doesn't change the way the display operates, then that's not right. Without NOSCROLL, info just scrolls off the top of the screen. With NOSCROLL, the screen clears every time the screen is full. In any case, I have solved the problem for users of the ST7365P by adding it to the list of displays exempt from automatic NOSCROLL. With my change the user can add NOSCROLL manually, if desired. It is never automatically added to the end of the OPTION LCDPANEL CONSOLE line, however.
 
Frank N. Furter
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  toml_12953 said  If you mean NOSCROLL doesn't change the way the display operates, then that's not right. Without NOSCROLL, info just scrolls off the top of the screen. With NOSCROLL, the screen clears every time the screen is full. In any case, I have solved the problem for users of the ST7365P by adding it to the list of displays exempt from automatic NOSCROLL. With my change the user can add NOSCROLL manually, if desired. It is never automatically added to the end of the OPTION LCDPANEL CONSOLE line, however.

You're right! With OPTION LIST, the first part—which includes the version number and some of the settings—now flashes briefly, and the rest is displayed permanently. That wasn't the case before I ran the OPTION LCDPANEL CONSOLE command.

Frank
 
toml_12953
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  Frank N. Furter said  
  toml_12953 said  If you mean NOSCROLL doesn't change the way the display operates, then that's not right. Without NOSCROLL, info just scrolls off the top of the screen. With NOSCROLL, the screen clears every time the screen is full. In any case, I have solved the problem for users of the ST7365P by adding it to the list of displays exempt from automatic NOSCROLL. With my change the user can add NOSCROLL manually, if desired. It is never automatically added to the end of the OPTION LCDPANEL CONSOLE line, however.

You're right! With OPTION LIST, the first part—which includes the version number and some of the settings—now flashes briefly, and the rest is displayed permanently. That wasn't the case before I ran the OPTION LCDPANEL CONSOLE command.

Frank

If you download the source and make my fix then the system won't automatically add NOSCROLL. You can still add it yourself, though.
Edited 2026-04-05 08:56 by toml_12953
 
terekgabor
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Posted: 11:20pm 04 Apr 2026
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Now it’s time to learn how to compile picomite files.
Is there any instructions somewhere how to do it?

Thx,
G@bor
 
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