circuitpython

Commit Graph

Author	SHA1	Message	Date
Tim Radvan	f842a40df4	rp2/rp2_pio: Add fifo_join support for PIO. 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>	2021-04-17 00:45:38 +10:00
Tim Radvan	3ea05e499d	examples/rp2: Add pio_uart_rx.py example. This was adapted from the `pio/uart_rx` example from the `pico-examples` repository: https://github.com/raspberrypi/pico-examples/blob/master/pio/uart_rx/uart_rx.pio It demonstrates the `jmp_pin` feature in action. Signed-off-by: Tim Radvan <tim@tjvr.org>	2021-02-02 11:33:51 +11:00

Author

SHA1

Message

Date

Tim Radvan

f842a40df4

rp2/rp2_pio: Add fifo_join support for PIO.

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>

2021-04-17 00:45:38 +10:00

Tim Radvan

3ea05e499d

examples/rp2: Add pio_uart_rx.py example.

This was adapted from the `pio/uart_rx` example from the `pico-examples`
repository:
https://github.com/raspberrypi/pico-examples/blob/master/pio/uart_rx/uart_rx.pio

It demonstrates the `jmp_pin` feature in action.

Signed-off-by: Tim Radvan <tim@tjvr.org>

2021-02-02 11:33:51 +11:00

2 Commits