Parts:
- cheap “bluepill“ STM32 ($)
- 160x128 ST7735 LCD ($)
- SD card
Comments:
- SD uses faster STM32 SPI1 interface which supports 36 Mbps
- Not all SD cards work at 36MBps
- Slow card at 18Mbps gives 22-23fps
- Fast card at 18Mbps gives 25-26fps
- Fast card at 36Mbps gives 33-34fps
- SdFat library uses DMA mode for SPI transfer
- Big buffer in RAM is used to speed up SPI/DMA transfer from SD
- SPI1 is shared between LCD and SD card
- Demo videos used here are taken from my older video and are n
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