jpmschweitzerandClaude Opus 4.8
67de636ab4
The blue flicker during voice activity is a MIPI-DSI framebuffer-read
underrun on the PSRAM bus, not tearing. The DSI DMA reads the 800x800
framebuffer continuously (~138 MB/s at the stock 80 MHz clock); under
load the Wi-Fi (esp-hosted SDIO) and audio-playback DMA on the same
PSRAM bus starve the DSI FIFO, which the hardware then paints blue
("lcd.dsi.dpi: can't fetch data from external memory fast enough").
Drop the DPI pixel clock to 40 MHz (~54 fps): halves the continuous
read and gives the FIFO slack to ride out bursty SDIO latency spikes.
Still smooth for the face UI, and lowers display power.
Vendored as a local component because managed_components/ is gitignored
(same pattern as the esp_hosted fork) — a local component overrides the
same-named waveshare/ managed dependency, so the fix survives a clean
build.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LKPbR6DY2JygHbyLjxm7Uu
912 B
912 B
BSP: Waveshare ESP32-P4-WIFI6-Touch-LCD-XC
ESP32-P4-NANO is a small size and highly integrated development board designed by waveshare electronics based on ESP32-P4 chip
| HW version | BSP Version |
|---|---|
| V1.0 | ^2 |
Configuration
Configuration in menuconfig.
Selection LCD display Board Support Package(ESP32-P4) --> Display --> Select LCD type
- Waveshare board with 800*800 3.4-inch Display (default)
- Waveshare board with 720*720 4-inch Display
BackLight
bsp_display_brightness_init();
bsp_display_backlight_on();
bsp_display_backlight_off();
bsp_display_brightness_set(100);