96a49bc7f7
Add support for ST7796 TFT LCD controller (320x480). The driver implements the NuttX framebuffer interface for SPI-connected displays. Features: - SPI interface with CONFIG_SPI_CMDDATA for D/C pin control; - RGB565 (16-bit) and RGB666 (18-bit) color formats; - Runtime rotation support (0, 90, 180, 270 degrees) via MADCTL; - Board-provided configuration via st7796_config_s structure; - Partial screen update via updatearea for efficient rendering; - Persistent swap buffer to avoid per-frame allocations; - Proper ST7796S initialization sequence with documented timing; The driver uses a board-provided configuration structure allowing flexible setup of resolution, SPI frequency, color depth, and initial MADCTL value without requiring Kconfig options in the generic driver. Architecture changes in this revision as per request: - Moved internal register commands to .c file (private) - Moved MADCTL bit definitions to .c file (private) - Moved struct st7796_cmd_s to .c file (private) - Converted MADCTL orientation macros to absolute values - Moved CONFIG_SPI_CMDDATA error check to beginning of file - Removed duplicated CONFIG_SPI_CMDDATA guards - Public header contains only board configuration API - Changed the Kconfig auto-select FB from 'select' to 'depends on' Tested with LVGL graphics library on STM32H753ZI board (my own port). Signed-off-by: Vinicius May <vmay.sweden@gmail.com> |
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| .github | ||
| arch | ||
| audio | ||
| binfmt | ||
| boards | ||
| cmake | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| dummy | ||
| fs | ||
| graphics | ||
| include | ||
| libs | ||
| mm | ||
| net | ||
| openamp | ||
| pass1 | ||
| sched | ||
| syscall | ||
| tools | ||
| video | ||
| wireless | ||
| .asf.yaml | ||
| .codespell-ignore-lines | ||
| .codespellrc | ||
| .editorconfig | ||
| .gitignore | ||
| .gitmessage | ||
| .pre-commit-config.yaml | ||
| .yamllint | ||
| AUTHORS | ||
| CMakeLists.txt | ||
| CONTRIBUTING.md | ||
| INVIOLABLES.md | ||
| Kconfig | ||
| LICENSE | ||
| Makefile | ||
| NOTICE | ||
| README.md | ||
| ReleaseNotes | ||
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
Getting Started
First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.
Documentation
You can find the current NuttX documentation on the Documentation Page.
Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
Supported Boards
NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
Contributing
If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.
License
The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.