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Arduino_STM32
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Arduino_STM32
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picodvi reviews and mentions
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FuryGpu – Custom PCIe FPGA GPU
The RP2040 is a great MCU for playing with graphics as it can bit bang VGA and DVI/HDMI. There's some info on the DVI here: https://github.com/Wren6991/PicoDVI
I wrote a couple of articles on how to do bit banged VGA on the RP2040 from scratch: https://gregchadwick.co.uk/blog/playing-with-the-pico-pt5/ and https://gregchadwick.co.uk/blog/playing-with-the-pico-pt6/ plus an intro to PIO https://gregchadwick.co.uk/blog/playing-with-the-pico-pt4/
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Video Game Module for Flipper Zero
A few years back someone was bit banging DVI and 720p 30fps video straight off the RP2040 GPIO pins with just inline resistors between not and the HDMI cable.
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VGA driver using PIO and DMA on the RP2040
I have the Adafruit DVI board and have been hacking on it some. It's more fun than should be allowed.
There's a project to get this running using Rust[1]. Currently it outputs the blue channel with sync, but has trouble with the other two channels. I don't have a hardware lab with scope, logic analyzer, etc., so it's not easy for me to debug.
In the meantime, I've been doing some experiments in the C codebase as well[2], mostly in the direction of proportionally spaced bitmap text, using the fonts in the X11 distribution.
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Recommend MCU with dual USB - one host and one device IF?
There is even bit-banged DVI library for pico.
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Show HN: PicoVGA Library – VGA/TV Display on Raspberry Pi Pico
Apparently, there is a digital video output project for the RP2040 already out there [0]! As for why digital video is more rare, it is because the common digital video formats are higher bandwidth and require higher signal integrity.
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Has anyone created a graphics card/engine?
I have seen Micro controllers bit bang HDMI https://github.com/Wren6991/picodvi
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My newest project: Dedicated blinkenlights for your rack.
Its a great chip all around. 133Mhz Dualcore M0+ and it has 5 programmable state machines. With those it punches way above its weight. Here is a very interesting dvi project for the pico
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RP2040 Doom
FWIW, it's possible to bit-bang DVI at 640x480 on the 2040. Takes about half of the available resources:
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Microcontroller VGA Interface Projects
The RP2040 (as used by the Raspberry Pi Pico) can generate some impressive video thanks to its PIO. E.g. Luke Wren's work giving DVI output https://github.com/Wren6991/picodvi and the scanvideo library: https://github.com/raspberrypi/pico-playground
I did a write up going over how to generate VGA video from scratch to produce some SNES like graphics:
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A Closer Look at Raspberry Pi RP2040 Programmable iOS (PIO)
> HDMI is a 10Gbps port.
> The PIO ports discussed here are on the order of 100kHz
PIO runs at the system clock, 125 MHz by default, overclocks of over 400 MHz have been reported stable. A single PIO can clock out 32 bits every cycle (with a DMA and a memory system that can feed this), giving you a total of 4 Gbps.
Running at full throttle like that, especially for a decent length of time is tricky if you want to actually do anything other than blast out bits but 16 or 8 bits per cycle is a lot more straight forward, so 2 or 1 Gbps.
DVI output has already been demonstrated, running two displays at 480p: https://github.com/Wren6991/picodvi
The DVI is maybe more of a party trick than something you'd do in production hardware but it does demonstrate how capable the PIO can be. You could happily implement the same concept in a more performant device and reach 10 Gbps or more in a reasonable way.
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A note from our sponsor - InfluxDB
www.influxdata.com | 17 Apr 2024
Stats
Wren6991/picodvi is an open source project licensed under BSD 3-clause "New" or "Revised" License which is an OSI approved license.
The primary programming language of picodvi is C.