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matherp
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Joined: 11/12/2012
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Posted: 01:25pm 25 Jan 2025

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Quote I cannot access the extended GPIO pins, and cannot activate PSRAM on GP47.

The WebMite firmware does not support the RP2350B

BarryH

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Joined: 05/01/2025
Location: Australia
Posts: 9

Posted: 01:58pm 25 Jan 2025

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matherp said

Quote I cannot access the extended GPIO pins, and cannot activate PSRAM on GP47.

The WebMite firmware does not support the RP2350B

Thanks for the quick response. Can the firmware table, on page 6 of the manual, be updated to reflect this.

I think this knowledge is better to be in the manual where everyone can read it in the future, rather than a subset of people who need to be site members to be able to initiate keyword searches and scroll through potentially countless messages to find this one entry.

BarryH

Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7503

Posted: 02:35pm 25 Jan 2025

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So far the 2350B boards are not showing up to be flexible in their specifications. :(

Mick

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

BarryH

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Joined: 05/01/2025
Location: Australia
Posts: 9

Posted: 02:46pm 25 Jan 2025

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Mixtel90 said So far the 2350B boards are not showing up to be flexible in their specifications. :(

Thanks. I appreciated the technical overview of the issue

BarryH

JanVolk
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Joined: 28/01/2023
Location: Netherlands
Posts: 220

Posted: 08:24pm 25 Jan 2025

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Ask:
Is it true that the volume of a wav file with I2S cannot be adjusted with Play Volume or am I doing something wrong?
I tested it with a MAX98357A and a PCM5102A with I2S where both volume output 100% for wav files.
For the rest, Play Volume works correctly.

PicoMiteHDMI MMBasic USB RP2350A Edition V6.00.02b3
Copyright 2011-2025 Geoff Graham
Copyright 2016-2025 Peter Mather

PicoMiteHDMI MMBasic USB RP2350A Edition V6.00.02b3
OPTION SERIAL CONSOLE COM2,GP8,GP9
OPTION FLASH SIZE 4194304
OPTION COLOR CODE ON
OPTION KEYBOARD US
OPTION CPU SPEED (KHz) 315000
OPTION HDMI PINS 1, 3, 7, 5
OPTION SDCARD GP22, GP6, GP7, GP4
OPTION AUDIO I2S GP1,GP5', ON PWM CHANNEL 0

Play volume 30, 30
'Play tone 200, 200
'Play wav "B:/wav/tet16cut.wav"
'Play mp3 "B:/mp3/jazz-intro-251968.mp3"
'Play sound 1, B, S, 200, 20
Pause 60000
End

Greetings,

Jan

ville56
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Joined: 08/06/2022
Location: Austria
Posts: 217

Posted: 09:41pm 25 Jan 2025

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just tested with PCM1502A,

play mp3 "filename"
play volume 20,20
... volume lowers
play volume 100,100
... volume raises

so it seems to work for me.

73 de OE1HGA, Gerald

JanVolk
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Joined: 28/01/2023
Location: Netherlands
Posts: 220

Posted: 10:18pm 25 Jan 2025

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ville56,

For me, the Play volume for tone, MP3, sound also works correctly, but not for WAV, only the maximum volume as output and no response with play volume, no matter how you set it.

Greetings,

Jan

ville56
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Joined: 08/06/2022
Location: Austria
Posts: 217

Posted: 10:49pm 25 Jan 2025

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Sorry Jan, my fault, didn't read careful enough. Same here with wav files.

73 de OE1HGA, Gerald

electricat

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Joined: 30/11/2020
Location: Lithuania
Posts: 295

Posted: 07:44am 26 Jan 2025

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Peter,

My test was not extended enough with with UDA1334A

I attached some records to listen

dac_prob.zip

Cames out, low tones like PLAY TONE 200,200,1000 sounds ok , but higher tones like PLAY TONE 1000,1000,1000 looks like some vibrato
-->hi_tone-Jan 26, 09.26(3).m4a
-->low_tone-Jan 26, 09.27.m4a

Short mp3 --> music_from_game_UDA1334-rec-Jan 26, 09.21.m4a was also game music record, so it sounded like OK

However when i started to play various heavy mp3, imediately hear some truncation, fluctuation
See how it should sound --> how_should_sound-Jan 25, 16.45.m4a
And what I get through UDA11134 --> how_UDA1334_outputs-Jan 25, 16.42.m4a

I`ve read datasheet and it is stated UDA1334A accepts only up to 24bit data
While firmware sends 32Bits as you stated. So might it be some 8 bits truncated makes sound bad ? Is anything It can be done there o just switch to other DAC

My MMBasic 'sand box'

ville56
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Joined: 08/06/2022
Location: Austria
Posts: 217

Posted: 07:56am 26 Jan 2025

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electricat, is it possible you exchanged the filenames

how_should_sound-Jan 25, 16.45.m4a
how_UDA1334_outputs-Jan 25, 16.42.m4a

for me seem to be reversed.

Btw, I have similar artefacts in the output of a PCM5102 chip.

73 de OE1HGA, Gerald

ville56
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Joined: 08/06/2022
Location: Austria
Posts: 217

Posted: 08:44am 26 Jan 2025

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This is how playback of mp3 files changes with cpu speed on my setup.

samples.zip

73 de OE1HGA, Gerald

electricat

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Joined: 30/11/2020
Location: Lithuania
Posts: 295

Posted: 11:05am 26 Jan 2025

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ville56 said electricat, is it possible you exchanged the filenames

how_should_sound-Jan 25, 16.45.m4a
how_UDA1334_outputs-Jan 25, 16.42.m4a

for me seem to be reversed.

Btw, I have similar artefacts in the output of a PCM5102 chip.

You are right. Should be named oposite.
If You say, PCM5102 bahaves similarry, fingers crossed Peter will brainstorm problem. Discrete components (for me) would cost more than single MAX98357A

so I`m highly interested in DAC outputs.

My MMBasic 'sand box'

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10067

Posted: 11:47am 26 Jan 2025

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V6.00.02b4 now available

https://geoffg.net/Downloads/picomite/PicoMite_Beta.zip

Fixes bug in I2S support introduced in b2
Adds support for PLAY VOLUME for FLAC and WAV when using I2S

New
MM.INFO(BOOT)
Tells you the reason for the last restart of the Pico
Returns:

Restart - the device has been restarted with CPU RESTART or an OPTION command
S/W Watchdog - the device has been restarted by a software watchdog timeout
H/W Watchdog - the device has been restarted by a hardware watchdog timeout
Firmware update - the device has been restarted following a firmware update
Power On - the device has been powered up
Reset Switch - the device has been restarted using the reset switch
Unknown code &Hn - unknown reason - please report the code and version RP2040/2350

javavi

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Joined: 01/10/2023
Location: Ukraine
Posts: 436

Posted: 01:09pm 26 Jan 2025

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> option list
PicoMiteHDMI MMBasic RP2350A Edition V6.00.02b4
OPTION AUDIO I2S GP10,GP9', ON PWM CHANNEL 5

', ON PWM CHANNEL 5 - Is this some kind of remnant of the PWM audio option?

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10067

Posted: 01:12pm 26 Jan 2025

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Quote Is this some kind of remnant of the PWM audio option?

No, The PWM channel is used to create the routine interrupt which feeds the PIO FIFO , same thing also used with AUDIO SPI
Edited 2025-01-26 23:13 by matherp

javavi

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Posts: 436

Posted: 02:42pm 26 Jan 2025

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PicoMiteVGA MMBasic USB RP2040 Edition V6.00.02b4

FILES command from the program works fine!
EXECUTE "FILES" from the program does not work, it causes a reboot with the message : Firmvare updated

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10067

Posted: 02:45pm 26 Jan 2025

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Quote EXECUTE "FILES" from the program does not work,

Not surprised - no fix possible. Execute only allows commands that return immediately. The message is wrong and I'll fix that.
Edited 2025-01-27 01:19 by matherp

electricat

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Joined: 30/11/2020
Location: Lithuania
Posts: 295

Posted: 04:55pm 26 Jan 2025

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Thank You, Peter!

UDA1334 now plays mp3 OK.
And PLAY TONE problems solved.
I am so pleased

Discret PWM sound is a must, but DAC is Godsend

@JanVolk
Could you confirm if MAX98357A has no problems too?

My MMBasic 'sand box'

ville56
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Joined: 08/06/2022
Location: Austria
Posts: 217

Posted: 05:50pm 26 Jan 2025

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Thanks Peter, works now also with PCM5102.

73 de OE1HGA, Gerald

JanVolk
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Joined: 28/01/2023
Location: Netherlands
Posts: 220

Posted: 08:55pm 26 Jan 2025

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Peter,

I did a quick test with PicoMiteHDMI MMBasic USB RP2350A Edition V6.00.02b4.
The PCM5102A with I2S now works great for PLAY-TONE, WAV, MP3, SOUND. Very clear sound and no ticking in the background and PLAY VOLUME also works well.
The PLAY VOLUME command is from 0% - 100% but PLAY SOUND 1,B,S,200,VOLUME 0% - 25%. Why no equality in the firmware?

Also tested the MAX98357A. This is very disappointing. Sound is very distorted and overdriven. I think the response with PLAY VOLUME is inverted?
This is the case for PLAY-TONE, WAV, MP3, SOUND. But it is impossible to work with the output because the speaker is directly on the module (power amplifier 3W) and will I possibly receive complaints from my neighbors?
I understand you may not own a MAX98357A which makes testing difficult?
But me and electricat could possibly do some testing?

Greetings,

Jan

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