diff options
| author | Tim Radvan <tim@tjvr.org> | 2021-04-02 19:35:18 +0100 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2021-04-17 00:45:38 +1000 |
| commit | f842a40df4d26bd74b92a3903096fc6b1709222d (patch) | |
| tree | 5941eceda408a5ba00862e29f49248a80c308fa8 /examples | |
| parent | e5d2ddde25351f1ede7d0d1b00be632301962fb0 (diff) | |
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>
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/rp2/pio_uart_rx.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/rp2/pio_uart_rx.py b/examples/rp2/pio_uart_rx.py index 41dfde3da..080b6bd63 100644 --- a/examples/rp2/pio_uart_rx.py +++ b/examples/rp2/pio_uart_rx.py @@ -22,6 +22,7 @@ PIO_RX_PIN = Pin(3, Pin.IN, Pin.PULL_UP) autopush=True, push_thresh=8, in_shiftdir=rp2.PIO.SHIFT_RIGHT, + fifo_join=PIO.JOIN_RX, ) def uart_rx_mini(): # fmt: off |