These files all use decorators (@asm_thumb, @asm_pio) that add names to the
function scope, that the linter cannot see.
It's useful to clear them in the file not in pyproject.toml as example code
will be copied and adapted elsewhere, and those developers may also use
Ruff (we hope!)
Signed-off-by: Angus Gratton <angus@redyak.com.au>
The PIO state machines on the RP2040 have 4 word deep TX and RX FIFOs. If
you only need one direction, you can "merge" them into either a single 8
word deep TX or RX FIFO.
We simply add constants to the PIO object, and set the appropriate bits in
`shiftctrl`.
Resolves#6854.
Signed-off-by: Tim Radvan <tim@tjvr.org>
Angus Gratton
Tim Radvan