Introduction
Let me vent a bit first, shit! shit! shit!, what a pain in the ass with the reuse!
- The board used in the example is:
<span>Zhongdian Atom ESP32S3 Development Board + 1.3 inch LCD Module</span>
- Code repository address:
<span>https://github.com/loogg/esp32_learning</span>
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Development Environment
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IDF:
<span>5.3.2</span>Copy the
<span>idf_v5.3.patch</span>from the repository to the<span>idf</span>path and execute<span>git apply idf_v5.3.patch</span>. -
ADF:
<span>2.7</span>
4G Network Card
Music Playback
NES Game Console
Camera
Optimization Notes
Display
-
<span>ESP32S3</span>‘s<span>DMA</span>can only use internal<span>RAM</span>, so before running the<span>NES</span>and camera, call<span>lvgl_port_lock</span>to lock the<span>LVGL</span>thread and use it to refresh the buffer. -
<span>LCD</span>uses an<span>SPI</span>asynchronous refresh mechanism, and during the operation of the<span>NES</span>and camera applications, a synchronous refresh is required, so the code in<span>IDF-> esp_lcd_panel_io_spi.c</span>was modified to add the<span>lcd_panel_io_spi_set_sync_trans</span>interface.
Music Playback
This board shares one <span>SPI</span> bus between the <span>SD card</span> and <span>SPI LCD</span>, so the asynchronous refresh must be turned off during music playback.
What a pain in the ass with the reuse!.
Function Block Introduction
Display
Implemented based on <span>LVGL</span>, the homepage features a honeycomb effect.
Uses <span>TinyTTF</span> to parse vector fonts.
USB
Adapted two protocol stacks, supporting <span>Cherryusb</span> and <span>ESP USB</span>, and supports <span>RNDIS devices</span> and <span>HID devices</span>.
-
<span>RNDIS</span>Integrates with the
<span>ESP-NETIF</span>component. -
<span>HID</span>Can connect a keyboard and mouse via a
<span>USB HUB</span>as input devices for<span>LVGL</span>.
Audio
Uses the <span>ESP-ADF</span> framework, and due to the special nature of the board, implements custom <span>board</span> and <span>codec</span>.
What a pain in the ass with the reuse!.
NES
Ported based on the <span>C</span> implementation of the <span>NES</span> emulator:
<span>https://github.com/Dozingfiretruck/nes</span>
Camera
Uses the Zhongdian Atom’s <span>OV2640</span>, and can directly read pixel data to display on the screen via the <span>esp-camera</span> component.
Future Plans
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Add
<span>AI Assistant</span>functionality, using<span>USB 4G</span>for internet connectivity -
Add a detailed interface for music playback, loading text and effects