picodvi
esp-idf
picodvi | esp-idf | |
---|---|---|
30 | 245 | |
195 | 12,508 | |
- | 1.7% | |
0.0 | 10.0 | |
over 3 years ago | 1 day ago | |
C | C | |
BSD 3-clause "New" or "Revised" License | Apache License 2.0 |
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picodvi
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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.
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 – 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
esp-idf
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ESP32S3 ability to change wakeup interrupt in wake stub/ulp coprocessor program?
For returning to deep sleep from the wake-up stub you can take a look at how it is done in https://github.com/espressif/esp-idf/tree/master/examples/system/deep_sleep_wake_stub
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Trying to learn ESP-IDF on VSCode
You can find the examples here: https://github.com/espressif/esp-idf/tree/master/examples
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GC9A01 vs ILI9341 for M5Stack AtomS3 LCD - both work, which should I use?
I found the spi_lcd_touch example and flashed it, and it seems to run fine with either ili9341 or gc9a01 drivers selected (although both are mirrored, and one has the colours inverted compared to the other - both of which I assume are things I can fix in either driver).
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I2C Interrupt
If that's the case: You register a GPIO as event source and make a task waiting for it, that then just performs the I2C-transaction. Follow this example https://github.com/espressif/esp-idf/blob/master/examples/peripherals/gpio/generic_gpio/main/gpio_example_main.c
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ESP-IDP and pytest markers for supported targets
IDF contains stuff like https://github.com/espressif/esp-idf/blob/master/pytest.ini and https://github.com/espressif/esp-idf/blob/master/tools/ci/idf_pytest/constants.py which are not part of the pytest-embedded package.
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Unveiling secrets of the ESP32: creating an open-source Mac layer
ugh.. arduino.
Better to start with ESP-IDF, there's a pretty full featured well documented web server, and a lot more.
https://github.com/espressif/esp-idf/tree/master/examples/pr...
- Can I use esp32 to hook up a camera?
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where can i find esp_peripheral.h ?
i've looked over the the ble peripheiral example https://github.com/espressif/esp-idf/blob/master/examples/bluetooth/nimble/bleprph/README.md and i see it's using
- Esp32 video streaming on web server
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ESP32-S3 Usb host hid
Hi, I have device ESP32-S3-DevKitM-1 and i want to catch keystrokes from keyboard. I tried using this https://github.com/tanakamasayuki/EspUsbHost and example from espressif https://github.com/espressif/esp-idf/tree/release/v5.1/examples/peripherals/usb/host/hid/main but when i connect keyboard it is just connecting and disconnecting. Can anyone help me with this?
What are some alternatives?
pico-examples
arduino-esp32 - Arduino core for the ESP32
pico-sdk
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
Gert-VGA-666 - Resources for Gert VGA 666
WiFiManager - ESP8266 WiFi Connection manager with web captive portal
showmewebcam - Raspberry Pi + High Quality Camera = High-quality USB Webcam!
WLED - Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi!
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.
Unity Test API - Simple Unit Testing for C
pico-zxspectrum - ZX Spectrum for Raspberry Pico Pi RP2040
esptool-js - Javascript implementation of flasher tool for Espressif chips, running in web browser using WebSerial.