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Geoffg

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Posted: 08:27am 10 Jul 2025

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We have a new release of the PicoMite firmware from Peter: Version 6.00.03

Significant changes are:
- Fixes bug in PLAY SOUND when the right channel is specified
- Improves performance of USB keyboards
- Fixes bug in PLAY MP3/FLAC/WAV when playing a directory
- Fixes bugs in handling of BYVAL and BYREF in function/subroutine calls
+ updates to the manual.

This update includes the PicoMite/PicoMiteVGA/WebMite versions and manuals into one file. The download link is: https://geoffg.net/Downloads/picomite/PicoMite_Firmware.zip

Geoff

Geoff Graham - http://geoffg.net

phil99

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Posted: 08:48am 10 Jul 2025

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One minor item missed. So perhaps the next manual update could have:-

p126 said MATH WINDOW in(), minout, maxout, out() [,minin!, maxin!]
minimum and maximum floating point values found in the original data (“minin!” and “maxin!”).

Edited 2025-07-10 18:53 by phil99

Volhout
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Posted: 09:15am 10 Jul 2025

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Geoff/Peter,

Checked a few firmwares (2040 / 2040VGA / 2350), and can report that when the upgrade is made over 6.00.02 the Options / flash slots / A: drive are not erased.

When the update is made over 5.08.00 then the chip is erased.

Volhout

PicomiteVGA PETSCII ROBOTS

Geoffg

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Posted: 09:38am 10 Jul 2025

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phil99 said One minor item missed.

Thanks, I will include that in the next revision of the manual.

Geoff

Geoff Graham - http://geoffg.net

phil99

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Posted: 11:30am 10 Jul 2025

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Now that PLAY SOUND right channel is working there appears to be differences between the manual and M (mono) operation.

Quote 'channelno' specifies the output channel. It can be L (left speaker), R (right
speaker), B (both speakers) or M (mono output with the right channel inverted
compared to the left).

1) M requires quotes while L, R, and B don't.
2) The right channel does not appear to be inverted compared to the left. Same as B.

> PLAY SOUND 1, M, S, 1000, 25 : DO : LOOP
Error : Expected a string
> PLAY SOUND 1, "M",S ,1000, 25 : DO : LOOP
>

Tested on basic RP2040.
Edited 2025-07-10 21:33 by phil99

Volhout
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Posted: 11:47am 10 Jul 2025

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Hi Phil,

You are correct. M does not invert anymore. Peter has removed that since it was not used. It was originally introduced because of a niche application (Game*Mite), and not actually used. I think M should be removed from the manual.

Volhout

PicomiteVGA PETSCII ROBOTS

twofingers

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Posted: 12:58pm 10 Jul 2025

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Volhout said ... , and not actually used. I think M should be removed from the manual.

Volhout

I used it intensively with the PicoPongo.

@Geoff
Thanks for your work, it must be difficult to keep adding new changes.

Regards
Michael

causality ≠ correlation ≠ coincidence

Volhout
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Posted: 01:05pm 10 Jul 2025

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Hi Michael,

What MMBasic revision is PicoPongo based on ? I think the M inversion has been disabled since 5.09.00. Long time ago. M as Mono may have worked, but not inverted the audio channel R.

Volhout
Edited 2025-07-10 23:06 by Volhout

PicomiteVGA PETSCII ROBOTS

twofingers

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Posted: 01:24pm 10 Jul 2025

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Hi Harm,

Volhout said Hi Michael,

What MMBasic revision is PicoPongo based on ? I think the M inversion has been disabled since 5.09.00. Long time ago. M as Mono may have worked, but not inverted the audio channel R.

Volhout

RP2350A Edition V6.00.02RC14.

I only used it because I'd never done anything with audio before. I was a complete newbie to game development. My advice above was also meant to be a bit cautious with changes.
Kind regards
Michael

causality ≠ correlation ≠ coincidence

matherp
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Posted: 01:29pm 10 Jul 2025

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I think I left "M" in to avoid breaking anything that had used it. The code for "M" is the same as "B". As Volhout says the original functionality is deprecated.
Edited 2025-07-10 23:30 by matherp

phil99

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Posted: 08:48am 11 Jul 2025

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In another thread Stan has mentioned the ILI8488 SPI S_DO / MISO pin fix isn't shown in the manual.

Quote OPTION LCDPANEL ILI9488, OR, DC, RESET, CS [,BL] [,INVERT]
Initialises a TFT display using the ILI9488 controller. This supports 480 * 320 resolution.
Note that this controller has an issue with the MISO pin which interferes with the touch controller.
For this display to work the MISO pin must not be connected.

Is it worth adding it for new users?

The most flexible version of this that works on all the SPI displays I have, including ILI9341 is a diode from LCD S_DO to T_DO and Pico MISO and a 1.8kΩ resistor from LCD CS to T_DO and Pico MISO. The diode can be any type with a junction capacitance of at least 30pF and up to 500pF. eg 1N4004 or 1N5819 are about 100pF. Anode to LCD S_DO, cathode to T_DO and Pico MISO.

Previously I used 10kΩ for the resistor but the 4" IPS ILI9488 panels have 4.7kΩ pullups on the SD card SPI pins. 1.8kΩ is low enough for LCD CS to pull MISO to logic low when LCD S_DO goes low. !.8kΩ is high enough not to unduly load either T_DO or SD_DO. All the SD cards I have work with it.
Edited 2025-07-11 21:11 by phil99

matherp
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Posted: 04:06pm 11 Jul 2025

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Geoff

Please could you update the 6.00.03 download with the attached. Fixes a bug in the CHAIN command when PSRAM is not enabled

Thanks

PicoMiteV6.00.03.zip

dddns
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Posted: 04:33pm 11 Jul 2025

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I think there's something wrong in the archive. File size for all 2350 versions 2,1MB..

homa

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Posted: 04:45pm 11 Jul 2025

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matherp said Geoff

Please could you update the 6.00.03 download with the attached. Fixes a bug in the CHAIN command when PSRAM is not enabled

Thanks

PicoMiteV6.00.03.zip

Hello Peter,

please check your ZIP file. I wanted to install the "PicoMiteHDMIUSBV6.00.03.uf2" directly, but that didn't work. Even deleting with the clear-tool didn't help. The file from Geoff download on the other hand works. I noticed that your file has 2088KB vs 1481KB!?!

Matthias

matherp
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Posted: 05:37pm 11 Jul 2025

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Strange - I just use a batch file to build everything and nothing has changed since the original release except one tiny fix for CHAIN

Try

PicoMiteV6.00.03.zip

dddns
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Posted: 05:51pm 11 Jul 2025

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This one is fine for me. Many thanks!

PicoMiteHDMI MMBasic USB RP2350B Edition V6.00.03

stanleyella

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Posted: 08:19pm 11 Jul 2025

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phil99 said In another thread Stan has mentioned the ILI8488 SPI S_DO / MISO pin fix isn't shown in the manual.

the "fix" is not mentioned for ili94xx but it works with 10kr and any diode.
just says don't connect mosi.
but I got the display to be same as ili9341, touch, sd card, and same read screen capabilities
OPTION LCDPANEL ILI9488, OR, DC, RESET, CS [,BL] [,INVERT]
Initialises a TFT display using the ILI9488 controller. This supports 480 * 320 resolution. Note that this
controller has an issue with the MISO pin which interferes with the touch controller. For this display to work the
MISO pin must not be connected.
I can connect it and seems ok... with diode resistor
stan

homa

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Posted: 08:32pm 11 Jul 2025

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matherp said Strange - I just use a batch file to build everything and nothing has changed since the original release except one tiny fix for CHAIN

Try

PicoMiteV6.00.03.zip

Thank you! It works perfectly now.

Geoffg

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Posted: 09:27pm 11 Jul 2025

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matherp said Geoff
Please could you update the 6.00.03 download with the attached. Fixes a bug in the CHAIN command when PSRAM is not enabled.
PicoMiteV6.00.03.zip

Done, using the latest (updated) files dated 12/7/2025.
Edited 2025-07-12 07:32 by Geoffg

Geoff Graham - http://geoffg.net

phil99

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Posted: 12:48am 12 Jul 2025

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As reported by Mixtel90 in the other thread CHAIN still isn't quite right.
Mick's test with some extra Prints.

> option list
PicoMite MMBasic RP2040 Edition V6.00.03
OPTION FLASH SIZE 16777216
OPTION COLOURCODE ON
OPTION CPUSPEED (KHz) 200000
>

> list "q1.bas"
Print
Print "This is the Main program (q1.bas)"
Print "MM.CMDLINE$ = ";MM.CMDLINE$
If MM.CMDLINE$<>"chainret" Then
Print "Array prepared in Main (q1.bas):"
Dim d(5)=(1,2,3,4,5,6)
Math V_Print d()
Print
Print "Passing array to q2.bas:"
Print
Chain "a:/q2.bas"
EndIf
If MM.CMDLINE$="chainret" Then
Print
Print "Array returned from q2.bas:"
Math V_Print d()
Print
EndIf
Print "The End"
End
>
>
> list "q2.bas"
Print "This program (q2.bas) is chained from Main (q1.bas)"
Print "Array received from q1.bas"
math v_print d()
For i=1 To 6
d(6-i) = i
Next

Print
Print "Array about to be returned to Main (q1.bas)"
math v_print d()

Chain "q1.bas","chainret"
>
>
> RUN

This is the Main program (q1.bas)
MM.CMDLINE$ =
Array prepared in Main (q1.bas):
1.0000, 2.0000, 3.0000, 4.0000, 5.0000, 6.0000

Passing array to q2.bas:

This program (q2.bas) is chained from Main (q1.bas)
Array received from q1.bas
0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000

Array about to be returned to Main (q1.bas)
6.0000, 5.0000, 4.0000, 3.0000, 2.0000, 1.0000

This is the Main program (q1.bas)
MM.CMDLINE$ = chainret

Array returned from q2.bas:
0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000

The End
>

Edited 2025-07-12 12:02 by phil99

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