feat(inventory): Phase 1 - scan and validate UPC barcodes #1

2026-07-06T17:41:46+01:00

lyrathorpe commented

2026-07-06 17:41:46 +01:00

Phase 1 of the Workabout MX inventory demo: read UPC barcodes from the scanner and display them, flagging UPC-A validity. No database yet (that is Phase 2).

New module code/inventory/:

upc.c/.h - UPC-A check-digit validation. Pure C, no PLIB deps, unit-testable on any host.
bcode.c/.h - barcode input over the serial port. On the Workabout the module decodes in hardware and delivers RS232, so a scan is read from TTY:D (top internal slot = port D) with standard PLIB serial I/O. Includes a line assembler that accumulates bytes to a terminator.
scan.c - the demo. Asynchronous wait on the scanner (TTY:D) and keyboard (CON:) via p_ioc/p_iowait: a scan is validated and printed, Esc quits.
scan.pr - TopSpeed project (tsc /m scan), compiles the three modules and links scan.img.
README.md - build, design, and the on-device points to confirm.

Written against the SDK docs now in docs/ (Workabout Programming Guide, PLIB Reference); it could not be compiled or run here. The likely on-device tuning points are called out in the README and in comments: serial line settings, the barcode terminator (BCODE_TERM, default CR), the Esc key code, and CON: async-read behaviour.

Phase 2 (DBF inventory: UPC + quantity + name, add/consume) will follow once the scan path is confirmed on the device.

Phase 1 of the Workabout MX inventory demo: read UPC barcodes from the scanner and display them, flagging UPC-A validity. No database yet (that is Phase 2). New module `code/inventory/`: - `upc.c/.h` - UPC-A check-digit validation. Pure C, no PLIB deps, unit-testable on any host. - `bcode.c/.h` - barcode input over the serial port. On the Workabout the module decodes in hardware and delivers RS232, so a scan is read from `TTY:D` (top internal slot = port D) with standard PLIB serial I/O. Includes a line assembler that accumulates bytes to a terminator. - `scan.c` - the demo. Asynchronous wait on the scanner (`TTY:D`) and keyboard (`CON:`) via `p_ioc`/`p_iowait`: a scan is validated and printed, Esc quits. - `scan.pr` - TopSpeed project (`tsc /m scan`), compiles the three modules and links `scan.img`. - `README.md` - build, design, and the on-device points to confirm. Written against the SDK docs now in `docs/` (Workabout Programming Guide, PLIB Reference); it could not be compiled or run here. The likely on-device tuning points are called out in the README and in comments: serial line settings, the barcode terminator (`BCODE_TERM`, default CR), the Esc key code, and `CON:` async-read behaviour. Phase 2 (DBF inventory: UPC + quantity + name, add/consume) will follow once the scan path is confirmed on the device.

lyrathorpe added 7 commits 2026-07-06 17:41:46 +01:00

feat(inventory): add upc.h (Phase 1: scan + UPC validation) 6e9254fc10

feat(inventory): add upc.c (Phase 1: scan + UPC validation) 6636731577

feat(inventory): add bcode.h (Phase 1: scan + UPC validation) 8fe13f6ef8

feat(inventory): add bcode.c (Phase 1: scan + UPC validation) 41202888e1

feat(inventory): add scan.c (Phase 1: scan + UPC validation) 30fd0085b1

feat(inventory): add scan.pr (Phase 1: scan + UPC validation) b705881861

feat(inventory): add README.md (Phase 1: scan + UPC validation) 97afbeb1ec

lyrathorpe added 1 commit 2026-07-06 17:41:47 +01:00

feat(inventory): add README.md (Phase 1: scan + UPC validation) 97afbeb1ec

lyrathorpe added 1 commit 2026-07-06 17:51:20 +01:00

fix(inventory): blocking scan loop (async CON: keyboard panicked WSERV, panic 100) b2f107f1d9