fengqi/lv_micropython
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Update LVGL and bindings to v9

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Related: https://github.com/lvgl/lv_binding_micropython/pull/225
Also update README.md
This commit is contained in:
Amir Gonnen 2022-07-26 23:42:23 +03:00
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README.md
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# Micropython + lvgl
**Micropython bindings to LVGL for Embedded devices, Unix and JavaScript**
[![Build lv_micropython unix port](https://github.com/lvgl/lv_micropython/actions/workflows/unix_port.yml/badge.svg)](https://github.com/lvgl/lv_micropython/actions/workflows/unix_port.yml)
[![Build lv_micropython stm32 port](https://github.com/lvgl/lv_micropython/actions/workflows/stm32_port.yml/badge.svg)](https://github.com/lvgl/lv_micropython/actions/workflows/stm32_port.yml)
[![esp32 port](https://github.com/lvgl/lv_micropython/actions/workflows/ports_esp32.yml/badge.svg)](https://github.com/lvgl/lv_micropython/actions/workflows/ports_esp32.yml) [![Build lv_micropython rp2 port](https://github.com/lvgl/lv_micropython/actions/workflows/rp2_port.yml/badge.svg)](https://github.com/lvgl/lv_micropython/actions/workflows/rp2_port.yml)
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[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/lvgl/lv_micropython)
With GitPod you can edit, build and run Micropython + LVGL from your web browser!
To quickly run Micropython + LVGL from your web browser you can also use the [Online Simulator](https://sim.lvgl.io/v8.1/micropython/ports/javascript/index.html).
To quickly run Micropython + LVGL from your web browser you can also use the [Online Simulator](https://sim.lvgl.io/v9/micropython/ports/javascript/index.html).
**For information abound Micropython lvgl bindings please refer to [lv_binding_micropython/README.md](https://github.com/lvgl/lv_binding_micropython/blob/master/README.md)**
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### ESP32 port
Please set `ESPIDF` parameter for the esp-idf install dir.
It needs to match Micropython expected esp-idf, otherwise a warning will be displayed (and build will probably fail)
Please run `esp-idf/export.sh` from your ESP-IDF installation directory as explained in the [Micropython ESP32 Getting Started documentation](https://docs.espressif.com/projects/esp-idf/en/stable/esp32/get-started/#get-started-export)
ESP-IDF version needs to match Micropython expected esp-idf, otherwise a warning will be displayed (and build will probably fail)
For more details refer to [Setting up the toolchain and ESP-IDF](https://github.com/lvgl/lv_micropython/blob/master/ports/esp32/README.md#setting-up-the-toolchain-and-esp-idf)
When using IL9341 driver, the color depth and swap mode need to be set to match ILI9341. This can be done from the command line.
When using IL9341 driver, the color depth need to be set to match ILI9341. This can be done from the command line.
Here is the command to build ESP32 + LVGL which is compatible with ILI9341 driver:
```
make -C mpy-cross
make -C ports/esp32 LV_CFLAGS="-DLV_COLOR_DEPTH=16 -DLV_COLOR_16_SWAP=1" BOARD=GENERIC_SPIRAM deploy
make -C ports/esp32 LV_CFLAGS="-DLV_COLOR_DEPTH=16" BOARD=GENERIC_SPIRAM deploy
```
Explanation about the paramters:
- `LV_CFLAGS` are used to override color depth and swap mode, for ILI9341 compatibility.
- `LV_CFLAGS` are used to override color depth, for ILI9341 compatibility.
- `LV_COLOR_DEPTH=16` is needed if you plan to use the ILI9341 driver.
- `LV_COLOR_16_SWAP=1` is needed if you plan to use the [Pure Micropython Display Driver](https://blog.lvgl.io/2019-08-05/micropython-pure-display-driver).
- `BOARD` - I use WROVER board with SPIRAM. You can choose other boards from `ports/esp32/boards/` directory.
- `deploy` - make command will create ESP32 port of Micropython, and will try to deploy it through USB-UART bridge.

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