gfx_demo
esp-idf-sys
| gfx_demo | esp-idf-sys | |
|---|---|---|
| 40 | 3 | |
| 70 | 237 | |
| - | 3.4% | |
| 0.0 | 8.6 | |
| almost 2 years ago | 2 days ago | |
| C | Rust | |
| GNU General Public License v3.0 or later | Apache License 2.0 |
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gfx_demo
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GFX Library Roundup (See comments for links)
GFX Library Documentation: https://www.codeproject.com/Articles/5302085/GFX-Forever-The-Complete-Guide-to-GFX-for-IoT
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Waveshare 1.54inch (b) V2 3-color e-paper w/ GFX (see comments)
GFX is a feature rich graphics library that does jpg loading, truetype fonts, alpha blending, etc.
- GUI Design on the fly
- Latest GFX driver library roundup
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This is a shot in the dark - color dithering on the ESP32
starting at line 573 here: https://github.com/codewitch-honey-crisis/gfx_demo/blob/master/lib/gfx/include/gfx_palette.hpp
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ESP32 multi display with SD card
basically draw to a bitmap and then blt that to the display. you can do the latter asynchronously, so you can load, then display, and while displaying, load the next one. it won't help immensely, but it will speed things up slightly. In GFX you'd use draw::bitmap_async. There's full documentation linked to from the link I gave you above - look in "Properly doing asynchronous draws" https://www.codeproject.com/Articles/5302085/GFX-Forever-The-Complete-Guide-to-GFX-for-IoT
- GFX is now available as a PlatformIO library
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ESP-IDF and SPI overhead - why I've focused on targeting Arduino
I queue a variable number of transactions, either polling or non depending on context, using this code I wrote: https://github.com/codewitch-honey-crisis/gfx_demo/blob/master/src/esp-idf/drivers/common/spi_master.hpp
- I just got my waveshare 5.65 inch 7-color e-paper working with GFX!
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Dual core really faster? ESP32 versus ESP32!
In case the OP doesn't respond, I'll field your question as best as I can: You can do the rendering using a bitmap flipping algorithm along with DMA. I also know it's possible to keep the framebuffer for that display in ram, with memory left over to do bitmap flipping because I do that very thing in https://github.com/codewitch-honey-crisis/gfx_demo - that device is a Lilygo-TTGO and I have several. The above code can run on it.
esp-idf-sys
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Computer Science graduate soon, looking at getting into embedded?
it's a great jumping off point as well if you want to experiment with rust: https://github.com/esp-rs/esp-idf-sys
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no_std libary that uses vectors?
Specifically for esp32 there is allocator in ESP-IDF.
- I got my ESP32-S3 today. It's fancy.
What are some alternatives?
nf-interpreter - :gear: nanoFramework Interpreter, CLR, HAL, PAL and reference target boards
rust-esp32-std-demo - Rust on ESP32 STD demo app. A demo STD binary crate for the ESP32[XX] and ESP-IDF, which connects to WiFi, Ethernet, drives a small HTTP server and draws on a LED screen.
lv_port_esp32 - LVGL ported to ESP32 including various display and touchpad drivers
gfx - GFX is a device independent graphics library primarily intended for IoT MCUs but not limited to that.
TFT_eSPI - Arduino and PlatformIO IDE compatible TFT library optimised for the Raspberry Pi Pico (RP2040), STM32, ESP8266 and ESP32 that supports different driver chips
rust - Empowering everyone to build reliable and efficient software.
JETGPIO - C library to manage the GPIO header of the Nvidia Jetson boards
rust - Rust language bindings for TensorFlow
esp-idf - Espressif IoT Development Framework. Official development framework for Espressif SoCs.
esp-idf-lib - Component library for ESP32-xx and ESP8266
esp-idf-hal - embedded-hal implementation for Rust on ESP32 and ESP-IDF