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https://github.com/lupyuen/lvglterm
LVGL Terminal for PinePhone on Apache NuttX RTOS
https://github.com/lupyuen/lvglterm
allwinner-a64 lvgl nuttx pinephone
Last synced: about 2 months ago
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LVGL Terminal for PinePhone on Apache NuttX RTOS
- Host: GitHub
- URL: https://github.com/lupyuen/lvglterm
- Owner: lupyuen
- License: apache-2.0
- Created: 2023-01-25T11:14:35.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-10-02T09:09:58.000Z (over 1 year ago)
- Last Synced: 2024-05-01T12:44:14.296Z (8 months ago)
- Topics: allwinner-a64, lvgl, nuttx, pinephone
- Language: C
- Homepage:
- Size: 61.5 KB
- Stars: 2
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# LVGL Terminal for PinePhone on Apache NuttX RTOS
LVGL Terminal `lvglterm` is a Touchscreen App for PinePhone that lets us run commands in the NuttX NSH Shell. Read the article...
- ["NuttX RTOS for PinePhone: LVGL Terminal for NSH Shell"](https://lupyuen.github.io/articles/terminal)
- [Watch the Demo on YouTube](https://www.youtube.com/watch?v=WdiXaMK8cNw)
LVGL Terminal is now in Mainline NuttX. To build LVGL Terminal...
1. Configure our NuttX Project...
```bash
pushd nuttx/nuttx
make distclean
tools/configure.sh pinephone:lvgl
make menuconfig
```
1. In "RTOS Features > Tasks and Scheduling"
Set "Application entry point" to `lvglterm_main`
Set "Application entry name" to `lvglterm_main`
1. In "Device Drivers"
Enable "FIFO and named pipe drivers"
1. In "Library Routines > Program Execution Options"
Enable "exec[l|v] / posix_spawn() Support"
1. In "Application Configuration > Examples"
Enable "LVGL Terminal"
1. In "Application Configuration > NSH Library"
Disable "Have architecture-specific initialization"
1. In "Application Configuration > Graphics Support > Light and Versatile Graphic Library (LVGL) > LVGL configuration > Font usage > Enable built-in fonts"
Enable "UNSCII 16"
1. Save configuration and exit `menuconfig`
1. Build NuttX...
```bash
make
```
1. If the NuttX Build fails with undefined reference to `lv_font_unscii_16`...
```text
LD: nuttx
aarch64-none-elf-ld: /private/tmp/nuttx/nuttx/staging/libapps.a(lvglterm.c.private.tmp.nuttx.apps.examples.lvglterm.o): in function `create_widgets':
/private/tmp/nuttx/apps/examples/lvglterm/lvglterm.c:254: undefined reference to `lv_font_unscii_16'
aarch64-none-elf-ld: /private/tmp/nuttx/apps/examples/lvglterm/lvglterm.c:254: undefined reference to `lv_font_unscii_16'
make[1]: *** [Makefile:173: nuttx] Error 1
make: *** [tools/Unix.mk:537: nuttx] Error 2
```
Clear the NuttX Build Configuration...
```text
make distclean
tools/configure.sh pinephone:lvgl
make menuconfig
```
And redo the `menuconfig` steps from above, then rebuild.
This happens because NuttX builds LVGL with the Makefile that's bundled with LVGL. And the Makefile Integration is a little wonky :-)
FYI the font file is at...
```text
nuttx/apps/graphics/lvgl/lvgl/src/font/lv_font_unscii_16.c
```
Which gets compiled to...
```text
nuttx/apps/graphics/lvgl/lv_font_unscii_16.c.*.apps.graphics.lvgl.o
```
Which should define `lv_font_unscii_16`...
```bash
$ aarch64-none-elf-objdump -t -S nuttx/apps/graphics/lvgl/lv_font_unscii_16.c.*.apps.graphics.lvgl.o
...
0000000000000000 g O .rodata.lv_font_unscii_16 0000000000000030 lv_font_unscii_16
```