Card Exclusive | Mrdlx1 Firmware Sd

In shared mode, the SD card controller handles read/write requests from two masters (firmware + external USB host). This introduces micro-delays. For laser engraving or high-speed 3D printing, even a 50ms delay causes blobs or burn marks. Exclusive mode guarantees deterministic timing.

Card detection and write-protect:

Power loss:

ESD and mechanical:

Do not remove exclusive access entirely – it is valuable for live performance stability. However, add a one-button “SD Export Mode” that: mrdlx1 firmware sd card exclusive

This preserves reliability while eliminating the need for a full power cycle. In shared mode, the SD card controller handles