gfx_demo
nf-interpreter
| gfx_demo | nf-interpreter | |
|---|---|---|
| 40 | 1 | |
| 71 | 310 | |
| - | 1.3% | |
| 0.0 | 9.4 | |
| over 2 years ago | 3 days ago | |
| C | C | |
| GNU General Public License v3.0 or later | MIT License |
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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.
nf-interpreter
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Linq less library?
Ref: https://github.com/nanoframework/nf-interpreter/pull/1802
What are some alternatives?
at24cx - C library for AT24CX EEPROM I2C interface. Sample implementations for esp32 (esp-idf) and raspberry pi pico (PICO-SDK) included
tinyproto - Tiny Software Protocol for communication over UART, SPI, etc
lv_port_esp32 - LVGL ported to ESP32 including various display and touchpad drivers
stm32-bootloader - Customizable Bootloader for STM32 microcontrollers. This example demonstrates how to perform in-application-programming of a firmware located on an external SD card with FAT32 file system.
esp-mqtt - ESP32 mqtt component
stm32-ws2812b - STM32 Library for WS2812B using DMA+PWM
gfx - GFX is a device independent graphics library primarily intended for IoT MCUs but not limited to that.
tinyfont - Text library for TinyGo displays
JETGPIO - C library to manage the GPIO header of the Nvidia Jetson boards
rppal - A Rust library that provides access to the Raspberry Pi's GPIO, I2C, PWM, SPI and UART peripherals.
DFRobot_GDL - DFRobot_GDL is a comprehensive display interactive framework that combines display, touch, and UI.
flipperzero-firmware - Flipper Zero firmware source code