adamksmith
a911b9e4cb
ESPHome external_component that presents a synthetic 64 KB FAT12 disk over the ESP32-S3's native USB-OTG, containing a one-byte switch_position file and a switch_position_grub.cfg snippet. The disk's volume serial is fixed at 0x55AA6922 to stay drop-in compatible with the upstream /etc/grub.d hook. Components: - fat12 / msc_disk: portable FAT12 sector synthesiser ported from reference/src/fat.c and the boot-sector / FAT / dir-entry generation in reference/src/usb.c. - usb_descriptors / tusb_glue: TinyUSB MSC class with our own callbacks delegating to MscDisk::read_lba (linker --allow-multiple-definition picks ours over esp_tinyusb's storage-backed defaults). - grub_boot_switch: top-level Component, NVS persistence on target changes, exposes targets table to sub-platforms. - select: HA-facing select platform reading parent's targets map. Validated end-to-end on an ESP32-S3-DevKitC-1: USB enumerates as 26ba:8003, /dev/sdb mounts FAT12, mtype reads back the live target, and POST /select/boot_target/set?option=Windows updates both files on the next host read.
27 lines
490 B
Plaintext
27 lines
490 B
Plaintext
# ESPHome build cache
|
|
/.esphome/
|
|
|
|
# Device YAML + secrets live in the user's HA config repo, not here
|
|
/ctn1-usco-wks-boot-selector.yaml
|
|
/secrets.yaml
|
|
|
|
# Upstream reference firmware — separate repo, clone manually for context:
|
|
# git clone https://github.com/stecman/hw-boot-selection.git reference
|
|
/reference/
|
|
|
|
# Host-side test outputs
|
|
/test/test_disk
|
|
/test/disk.img
|
|
/test/sweep_*.img
|
|
/test/*.img
|
|
|
|
# Python / editor / OS
|
|
__pycache__/
|
|
*.pyc
|
|
*.pyo
|
|
.DS_Store
|
|
*.swp
|
|
.vscode/
|
|
.idea/
|
|
.claude/
|