M5Stack PaperDIY Complete Kit · avance · Réduisez la latence de mise à jour de l'écran ED047TC1 en exploitant le direct memory access de l'ESP32-S3.
Hardware: PaperDIY Complete Kit, USB-C cable. 2. Setup: Install ESP32-S3 drivers and M5GFX library. Enable DMA support for the 8-bit parallel bus in project configuration (menuconfig). 3. Wiring: As the kit is pre-assembled, simply verify serial connection for debugging. 4. Code: Initialize the screen in partial mode. Create a buffer in PSRAM (8 MB available) to store the 960x540 image. Use DMA functions to transfer data from PSRAM to the display controller without burdening the LX7 CPU. 5. Commands: Compile and flash the firmware. 6. Verification: Display a complex animation. Measure refresh time with micros() before and after enabling DMA. CPU load should drop drastically. 7. Deep dive: Implement double buffering in PSRAM to completely hide refresh artifacts during fast transitions.