picodvi
nanoCH32V203 | picodvi | |
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8 | 30 | |
58 | 195 | |
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10.0 | 0.0 | |
over 1 year ago | over 3 years ago | |
C | ||
- | BSD 3-clause "New" or "Revised" License |
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nanoCH32V203
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Recommend MCU with dual USB - one host and one device IF?
If you are willing to try r/RISCV ones, then nanoCH32V203 (with two Full-Speed interfaces) and nanoCH32V305 (with one Full-Speed and one High-Speed interface) might be enough.
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RP2040 based MCU for dactyl in the works
There are dual USB r/RISCV boards with GPIO pins exposed, like nanoCH32V203 and nanoCH32V305.
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Hi, I have a Linux based device and I need to use one of it USBs to broadcast data. I want to send the UART data on it. The thing is it's USB is host(master) and it's useless for my project so I want to change it mode to behave like a slave device and thus I am able to communicate with a PC. Armbian
Another alternative is to use dual USB MCU board like nanoCH32V203 as USB CDC relay.
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USB Dongle to convert Colemak keyboard to QWERTY keystrokes?
RISC-V boards cost $3-$6 depending if you want high speed USB or full speed one.
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nanoCH32V003 board
Their earlier boards like nanoCH32V203 and nanoCH32V305 were more user friendly, one could flash those via USB without WCH-Link.
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Hardware/software to run RISC-V ASM?
Muse Lab has MCU boards like nanoCH32V203 and nanoCH32V305.
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CH32V305 Development Board from MuseLab
The same form factor as nanoCH32V203, but with more RAM and storage, also one of USB interfaces is high speed and SDIO is native this time. Comparable to CH32V307 boards, but lacks ethernet port.
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ð¥MK: Use programmable keyboard firmware with any keyboard.
Speaking of hardware there is very nice $3 RISC-V board that would fit well USB to USB converter use case. No keyboard firmware is ported to it yet.
picodvi
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FuryGpu â 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.
https://github.com/Wren6991/PicoDVI
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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.
[1]: https://github.com/DusterTheFirst/pico-dvi-rs
[2]: https://github.com/Wren6991/PicoDVI/pull/48
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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 â 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.
[0] https://github.com/Wren6991/PicoDVI
- Fast algorithm to scale a image
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Least resourceful 18 year old air defense ukrainian soldier with basic coding abilities
I've seen people implement DVI with PIO, and I'm sure basic missile commands wouldn't be as bandwidth-intensive as that.
- Is a Raspberry Pi Pico able to play video on a spi-tft screen?
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Help understanding current-mode and TMDS logic in DIV/HDMI.
For example this guy (https://github.com/Wren6991/PicoDVI) essentially 'bit bangs' CML. Sure its not a completely compliant implementation, but it's pretty close... In his case using a push pull with 3.3V/0V. I don't know how he's getting a 0.8V swing.
- Bitbanged DVI on the RP2040 Microcontroller
What are some alternatives?
nanoCH32V003
pico-examples
ch32v-keyboard
pico-sdk
nanoCH32V305
Gert-VGA-666 - Resources for Gert VGA 666
xmk - Use programmable keyboard firmware with any keyboard.
showmewebcam - Raspberry Pi + High Quality Camera = High-quality USB Webcam!
ch32v307 - Including the SDKãHDKãDatasheet of RISC-V MCU CH32V307 and other relevant development materials
Arduino_STM32 - Arduino STM32. Hardware files to support STM32 boards, on Arduino IDE 1.8.x including LeafLabs Maple and other generic STM32F103 and STM32F407 boards.
keymap-editor - A web based graphical editor of ZMK keymaps.
pico-zxspectrum - ZX Spectrum for Raspberry Pico Pi RP2040