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matherp
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Posted: 08:57am 03 Sep 2024

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Quote When I run this small program in mode 5, I see a brownish bar in the 4th Red Position, and no Dark green bar in the second Green position.

Bug in the default colour map - will fix

This sets the map correctly

Dim s7(7)=(0,&H24,&H49,&h6d,&h92,&hb6,&hdb,&hff)
Dim s3(3)=(0,&H55,&haa,&hff)
i=0
For red=0 To 7
For green=0 To 7
For blue=0 To 3
b%=(s3(blue) + s7(green)*256 +s7(red)*65536)
Map(i)=b%
Inc i
Next
Next
Next
Map set

Edited 2024-09-03 19:05 by matherp

Mixtel90

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Posted: 09:49am 03 Sep 2024

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Carl:
Fun stuff this HDMI. I have a TV and a monitor that don't need any extra connections! I'll try another TV later if I get the chance.

I can get the extra bits onto the Beta & Gamma boards so I'll add them anyway.

Mick

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

Bleep
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Joined: 09/01/2022
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Posted: 11:40am 03 Sep 2024

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Hi Mick,
It's worth supplying the 5v to the HDMI, if only for those who are using HDMI to VGA converters, me, most of them self power from the HDMI cable, you sometimes can also power them from a USB, but most I think get power over HDMI. Mine is currently working great, with the 5v power going to the appropriate pin on the Adafruit board. :-)
Regards Kevin.

matherp
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Posted: 11:48am 03 Sep 2024

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V6.00.00b4 all versions

PicoMiteRP2350b4.zip

In theory this completes the support for the 80-pin chip allowing things like the port command and function to work on pins GP30-GP47
There are now a very few bits of tinkering to do but this release is pretty much complete.

Fixes a bug in the RGB332 (mode 5) default colour map

Reworks XMODEM so that you can transfer files to the A: drive (at least for me it does)

Additional flexibility for the HDMI output

OPTION HDMI clockpositivepin, d0positivepin, d1positivepin, d2positivepin
Valid values are 0-7 and of course the pins mustn't overlap
for each channel:
If the pin is an even number the negative pin is defined as pin+1
If the pin is an odd number the negative pin is defined as pin-1
Defaults to 2,0,6,4 to match various commercial boards

Mixtel90

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Posted: 01:03pm 03 Sep 2024

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Bleep:
You can't do it like that. The monitor sources 5V at 50mA to 500mA according to the spec. If you are using a converter it should be powered by either the monitor or a separate supply, never the Pico's HDMI as then you couldn't (safely) plug it into a monitor. You could power it from a USB port of the Pico though (on one of my boards anyway!). They can source up to 100mA.

You could power the Pico from the monitor in theory, but 50mA is very little, but still within HDMI spec.

There can be a 5V supply from the Pico via 2K2 pull up resistors for the HDMI I2C. There can also be a 3V3 supply via a 2K2 resistor to the CEC signal.

------------------

Thanks Peter! :)
That flexibility of the HSTX will come in very useful. It can be awkward to lay out.
Edited 2024-09-03 23:05 by Mixtel90

Mick

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

Bleep
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Posted: 01:58pm 03 Sep 2024

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Hi Mick,
Well all I can say is almost every HDMI to VGA converter on Ebay is like this, ie they are powered from the HDMI, there is no other way of powering them, no power inputs to the converter (most of them), you can't power them from the VGA?
for example
If I remove the 5V from the HDMI socket board I loose my VGA signal.
Regards Kevin.

Mixtel90

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Posted: 02:24pm 03 Sep 2024

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Right - rethink.... Back to the specs!

To get it right the Pico board (like all HDMI devices) should provide at least 50mA at 5V to pin 18 of the HDMI connector. A maximum of 500mA. You can't have that though as the maximum that the Pico system can draw from a USB2 console is 500mA and it has 4 USB ports rated at 100mA each in addition to everything else.

If I can get a 60mA polyswitch fuse then that should fulfil the HDMI spec.

.
Edited 2024-09-04 00:36 by Mixtel90

Mick

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

JanVolk
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Joined: 28/01/2023
Location: Netherlands
Posts: 144

Posted: 04:01pm 03 Sep 2024

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Peter

Does this mean that the Olimex can now also work in the latest PicoMiteRP2350b4 release?
Please provide an example of how to set it up.
https://thepihut.com/products/olimex-rp2040-pico-pc-for-raspberry-pi-pico

DVI ---- , DVI
Breakout , Olimex
Board -- , Board
GP12 D0+ , GP12 CK-
GP13 D0- , GP13 CK+
GP14 CK+ , GP14 D0-
GP15 CK- , GP15 D0+
GP16 D2+ , GP16 D2-
GP17 D2- , GP17 D2+
GP18 D1+ , GP18 D1-
GP19 D1- , GP19 D1+
GND .GND , GND .GND

Jan.

JohnS
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Joined: 18/11/2011
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Posted: 04:19pm 03 Sep 2024

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JanVolk said Peter

Does this mean that the Olimex can now also work in the latest PicoMiteRP2350b4 release?

Example in this thread

John

homa

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Joined: 05/11/2021
Location: Germany
Posts: 351

Posted: 05:22pm 03 Sep 2024

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matherp said V6.00.00b4 all versions

PicoMiteRP2350b4.zip

...

Reworks XMODEM so that you can transfer files to the A: drive (at least for me it does)

...

Hello Peter,

new problem. The file “PicoMiteHDMIUSB.uf2” from the ZIP for b4 does not produce a picture on the monitor (all the same!) When I go back to b3 it works again.
When I install “PicoMiteHDMI.uf2” from the ZIP for b4 I also have a picture on the monitor again!

Apart from that I used “clear_flash.uf2” from the b3 ZIP to prepare the Pico2, but xmodem receive with the b3+ still doesn't work for me :-(
I can't test b4 for the reason mentioned above.

Matthias

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 9110

Posted: 05:41pm 03 Sep 2024

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Just type "option hdmi pins 2,0,6,4" and b4 should work

homa

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Posted: 06:11pm 03 Sep 2024

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matherp said Just type "option hdmi pins 2,0,6,4" and b4 should work

Thank you, that works.

I don't know what's different with me than with you. OS w11 64bit and Tera Term. xmodem receive to sd-card works (so I rule out a hardware problem with the “new” Prolific USB-to-Serial Comm Port Adapter).
It does not work directly into the memory. I use binary files like a jpg image.

Apart from that, mode 4 is really great for images!

stanleyella

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Joined: 25/06/2022
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Posted: 12:04am 04 Sep 2024

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think it worked 2040 but pico2 vga usb error

OPTION EXPLICIT
oPTION DEFAULT NONE
option autorun on
'SetPin GP28,pwm1A 'this optional test signal comment out
'PWM 1,10000,50 'square wave ,this optional test signal comment out
dim c%,x%,samples!(480)
SETPIN GP29, AIn
adc open 50000,3
FRAMEBUFFER CREATE F
FRAMEBUFFER LAYER L
FRAMEBUFFER WRITE L
line 0,mm.vres/2,mm.hres,mm.vres/2,,rgb(blue)
line mm.hres/2,0,mm.hres/2,mm.vres,,rgb(blue) 'draw cross to layer L
FRAMEBUFFER WRITE F
do
adc start samples!() 'get new samples
'trigger
c%=0
do:If samples!(c%) > 0.1 then if samples!(c%+1) < 0.2 then exit do
inc c%:loop while c%<160

math scale samples!(),80/3.3,samples!()'scale to 80 pixel height
FRAMEBUFFER COPY L,F
for x%=0 to 238 'screen width
line x%,samples!(x%+c%),x%+1,samples!(x%+1+c%),,rgb(green) 'draw new sample from sample(c%)
next x%
FRAMEBUFFER COPY F,N
loop

[11] FRAMEBUFFER LAYER L
Error : L is not declared
>

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 9110

Posted: 03:34pm 04 Sep 2024

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V6.00.00b5

PicoMiteRP2350binariesb5.zip

VGA, CGAUSB, HDMI and HDMIUSB all tested with flappy birds

VGA and VGAUSB new CPU speeds 157000 and 315000 in addition to 126000, 252000 and 378000. These generate the video at 75Hz rather than 60. 315000 is the same CPU speed as the HDMI versions

XMODEM reworked and retested on USB versions and working direct to A: drive (for me at least)
Edited 2024-09-05 01:36 by matherp

homa

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Posted: 04:53pm 04 Sep 2024

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Note on XMODEM R and Tera Term:
https://www.thebackshed.com/forum/ViewTopic.php?PID=226013#226013#226015

stanleyella

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Posted: 05:20pm 04 Sep 2024

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using pico2 and simple scope it worked until use pwm

'SetPin GP5,pwm1A 'this optional test signal comment out
'PWM 1,9876,30 'square wave ,this optional test signal comment out
dim c%,x%,samples!(480)
SETPIN (31), AIn
adc open 500000,1 'samples per second

FRAMEBUFFER CREATE F
FRAMEBUFFER LAYER L
FRAMEBUFFER WRITE L
line 119,0,119,239,,rgb(green)
line 0,119,239,119,,rgb(green)
FRAMEBUFFER WRITE F

do
adc start samples!() 'get new samples
'trigger
c%=0
do:If samples!(c%) > 0.1 then if samples!(c%+1) < 0.2 then exit do
inc c%:loop while c%<160

math scale samples!(),239,samples!()'scale to 240 pixel height
FRAMEBUFFER COPY L,F
for x%=0 to 238 'screen width
line x%,samples!(x%+c%),x%+1,samples!(x%+1+c%),,rgb(magenta) 'draw new sample from sample(c%)
next x%
FRAMEBUFFER COPY F,N
loop

SetPin GP5,pwm1A 'this optional test signal comment out
PWM 1,9876,30 'square wave ,this optional test signal comment out

gives error
RUN
[6] SetPin GP5,pwm1A 'this optional test signal comment out
Error : Invalid configuration
>

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 9110

Posted: 05:44pm 04 Sep 2024

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Please, please include which version and list of options in any report of issues

stanleyella

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Posted: 06:03pm 04 Sep 2024

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for sure. it's a 2040 prog that worked but not tried for a while, you did suggest testing existing 2040 code on pico2 or is it 2350? and any problems.
it's a nice dropin replacement for 2040 but there gonna be a few glitches
regards,stan

> option list
PicoMite MMBasic Version 6.00.00b3
OPTION SYSTEM SPI GP18,GP19,GP16
OPTION AUTORUN ON
OPTION FLASH SIZE 4194304
OPTION CPUSPEED 378000 'KHz
OPTION LCDPANEL ILI9341, LANDSCAPE,GP15,GP14,GP13
OPTION TOUCH GP12,GP11
GUI CALIBRATE 0, 3919, 3854, -899, -662
OPTION SDCARD GP22
>

matherp
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Location: United Kingdom
Posts: 9110

Posted: 06:09pm 04 Sep 2024

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GP5 isn't PWM1A it's PWM2B (manual page 9)

So should be

SetPin GP5,pwm2B
PWM 2,9876,,30 'Note extra comma to use B channel pin

As written couldn't have worked on any version

Note in the current version you can just use

SETPIN GP5,PWM

but you still need to know the PWM slice and channel to set up the output
Edited 2024-09-05 04:11 by matherp

matherp
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Posted: 04:34pm 05 Sep 2024

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New video demo posted, not quite sure how/if it fits in to MMbasic but the RP2350 is a little beast

https://youtu.be/t6BwcKdFjoU

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