394ae65eaf
Adapt the usbd-storage rp2040 example into pm-grid as a composite MIDI+MSC device: - Host sees a 1MB removable drive backed by the upper 1MB of flash (a .filesystem region, NOLOAD so it stays out of the UF2 and survives reflashes). - scsi_command handles the SCSI set (Inquiry / ReadCapacity10/16 / ReadFormatCapacities / Read / Write / ModeSense / RequestSense / TestUnitReady). Reads come from flash via raw pointer; writes accumulate a 4KB block then erase+program the sector with rp2040-flash (wrapped in interrupt::free). - Host owns the FAT format (formats on first use). Unblocks on-device persistence. - Composite poll: usb_dev.poll([&mut midi, &mut scsi]); scsi.poll services commands. Build fixes required by adding rp2040-flash: - rp2040-hal 0.10 -> 0.11 (0.10 + rp2040-flash 0.6 both export the __aeabi_*/ __addsf3 ROM intrinsics -> duplicate symbols). No HAL API breakage. - lto = false + codegen-units = 1 (fat-LTO tripped the same duplicate intrinsic). UF2 stays ~257KB thanks to NOLOAD. defmt logs on block writes + unknown commands. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
||
|---|---|---|
| .. | ||
| .cargo | ||
| src | ||
| .gitignore | ||
| build.rs | ||
| build.sh | ||
| Cargo.toml | ||
| memory.x | ||
| uf2.py | ||