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Forum Index : Microcontroller and PC projects : RP2350 firmware
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Sasquatch Guru  Joined: 08/05/2020 Location: United StatesPosts: 362 |
I think I found another small bug in PicoMiteHDMI 6.00.00b0. The CPUSPEED command seems to be a carry-over from the VGA version. I thought I had Terra Term connected to the Tiny2350 running on VGA, but was actually looking at the HDMI running on the 2350 PGA. I can report that the Tiny2350 ran VGA 5.09.00RC7 overnight at 378000 with no troubles. PicoMiteHDMI MMBasic Version 6.00.00b0 Copyright 2011-2024 Geoff Graham Copyright 2016-2024 Peter Mather > option list PicoMiteHDMI MMBasic Version 6.00.00b0 OPTION FLASH SIZE 16777216 OPTION KEYBOARD US OPTION PICO OFF OPTION CPUSPEED (KHz) 315000 > option cpuspeed 1 Error : CpuSpeed 126000, 252000 or 378000 only > option cpuspeed 315000 Error : CpuSpeed 126000, 252000 or 378000 only -Carl |
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| Sasquatch Guru Joined: 08/05/2020 Location: United StatesPosts: 362 |
I can also confirm that the Pimoroni 2350PGA device doesn't seem to run above about 315000Khz. I tested with PSRAM disabled and enabled. My Pico 2 and Pico2 plus devices are still about a week away. -Carl |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 857 |
Same with my Tiny2350  Edit: Oh but plain PicoMite firmware in my case Edited 2024-08-29 00:39 by PhenixRising |
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stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2120 |
pico2 runs at 378000 ok but not mentioned in the manual now. playing safe? |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4222 |
@Peter, Despite the fact that my PIO programs run, there is something wrong when stopping an MMBasic program. It feels like the PIO program keeps running, and re-programming the PIO does not work. I tried PIO STOP x,x but that did not work. Problem is that you have to CPU RESTART first before you can update a PIO program once it has been running and is stopped. Volhout PicomiteVGA PETSCII ROBOTS |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6779 |
There is no manual for the Picomite 2, Stan. :) The RP2350 doesn't overclock quite as well as the RP2040, I don't think. However, it's more efficient so it's actually faster for the same clock speed (approximately 1.7x faster depending on what you are doing). In particular, if you read Peter's posts, you'll find that some clock speeds don't work for certain video systems. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2120 |
the vga manual I got MMBasic Ver 5.08.00 no mention of 3xxxxx just 2xxxxx and this manual must be for 2040 as no manual for pico2 |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6779 |
Huh... I'm still using the 5.07 manual. I keep meaning to print out a newer one but I keep waiting until the next one is ready.... :) I have some later ones but only as pdf. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| JanVolk Senior Member  Joined: 28/01/2023 Location: NetherlandsPosts: 144 |
Mixtel90 The same with me. I also use a PDF and always add something with a shortcut to my desktop. Translated and with many examples and templates for printing. (369 pages) Jan. |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
The 2040 maximum speed was reduced in v5.08 for a while as some chips were unreliable at 378MHz, though you could get around the limit with a .OPT file. In v5.09 the limit was restored to 378 then recently raised to 420MHz for the non-VGA. Using the higher speeds is entirely at your own risk, some chips will misbehave or not work at all. Also keenly awaiting the v5.09 manual, but we wont see that till v5.09.00 firmware is finished. History as recalled rather than researched, may not be entirely true. Read "1066 and All That". |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2120 |
in the manual ili9341 gone!? I got by using the suggested values in the manual and display, sdcard etc. worked. The ili9341 was the basic defacto lcd that worked. no mention now :( |
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| phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
Are you looking at the VGA manual? |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2120 |
> option list PicoMite MMBasic Version 6.00.00b0 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, 3865, 3884, -892, -655 OPTION SDCARD GP22 > |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9108 |
Bug fixes for VGA version "Error : Stack overflow, expression too complex at depth 0" and HDMI version "I'm getting some blocky artefacts on HDMI, only seems to affect Mode 1" PicoMiteHDMI.zip PicoMiteVGARP2350.zip |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4222 |
Thanks Peter, Running the VGA code now. Seems to work fine. Looking into the PIO issues I mentioned yesterday. The frequency counter stops are repeatable. I am trying to bring the problem back to a sub function right now. The problem where you cannot re-program the PIO without restart I cannot duplicate today, despite that it was 100% yesterday. Sorry.... Volhout PicomiteVGA PETSCII ROBOTS |
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Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1113 |
I am now on vacation in the Netherlands for a week (not at Volhout). I ll test the new Version as soon when I m home again. Edited 2024-08-29 20:58 by Martin H. 'no comment |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9108 |
Harm I've just tested the HDMI version just posted with your frequency counter code and it seems to work fine. I'll now try with the standard PicoMite |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4222 |
On this latest VGA the frequency counter also seems stable. Maybe the Pico Version is pushing too much text ... too fast ... into the console UART. I can see that the "dead time between measurements" used for console output, is longer on VGA, despite VGA running 252MHz. Have been running it normal Pico (150MHz) for ten minutes now when commented out all the print commands (just checking the gate pulse at GP2). So I think it is text output related. Volhout Edited 2024-08-29 22:51 by Volhout PicomiteVGA PETSCII ROBOTS |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9108 |
Harm I don't understand what is going on with your frequency code. What determines the length of the gate pulse? Sometime I run it and the LED flashes, sometimes the pulse measures at just 2uSec so there is no obvious flash. This seems to be related in some way to cpuspeed. Also, it seems to be affected by setting or not an LCDPANEL CONSOLE. The HDMI and VGA versions output synchronously to the console by default. If the PicoMite version is set to output to a LCD in console mode then it doesn't fail, the gate pulse in this case seems to alternate between 2uS and around 50mec. Seems like this may be a race condition of some sort |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4222 |
Hi Peter, The GP2 is LOW when the counter is counting. The time it is high, is the time when the data is fetched from the FIFO's and the output strings are calculated. I have seen the same, that these 5 strings are send to the UART in 2usec, and that seems unrealistic to me. Typical is 10ms (Pico) or 20ms (VGA) for high level on the GP2. I think the 2us happens when the system is already stalled. Harm PicomiteVGA PETSCII ROBOTS |
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