Glasgow Embedded / Glasgow - History

applet.interface.jtag_xvc: fix `--frequency` option help.

gateware.uart: fix parity computation

Iteration over a `Shape` has not been a thing since Amaranth 0.4,
causing a `TypeError` when setting up non-constant parity. Use the
reduction XOR operator instead of hand-rolling the parity computation.

Tested that both odd and even parity work, and that mismatched settings
generate receive errors, when listening to an FT232R on macOS running
CoolTerm. Tested also that a loopback connection works.

gateware.crc: add gateware for checksumming packet streams.

applet: prepare for testing after building applet.

This ensures that pins can be retrieved in `prepare` method.

gateware.cobs: fix an internal overflow.

This bug was causing data corruption when the FIFO would fill up.

Co-authored-by: Wanda <wanda@phinode.net>

gateware.cobs: re-export `encode` and `decode` from `cobs` package.

This simplifies import management, and also allows us to easily replace
these functions with a faster implementation.