Commit Graph

14 Commits

Author SHA1 Message Date
Mark e326d7ca80
Merge branch 'main' into rp_dp_parallel 2021-03-15 20:00:13 -05:00
microDev a52eb88031
run code formatting script 2021-03-15 19:27:36 +05:30
gamblor21 1658fe04f9 Set the statemachine to never reset so REPL works 2021-03-11 19:32:44 -06:00
Jeff Epler 2ae1e7de61 WIPrp2040: Implement IncrementalEncoder
Any two consecutive pins can be used for an IncrementalEncoder

Testing performed: Put a synthesized (few hundred counts per second) quadrature signal into GP2/3 and read the encoder out.  Performed filesystem operations at the same time to stress test it.

The reasons for not using common_hal_rp2pio_statemachine_readinto are commented on.
2021-03-05 10:31:29 -06:00
Jeff Epler bd01d31542 rp2pio: Add pins_are_sequential
This can be used where the standard API calls for a list of pins, to check that they satisfy the requirements of the rp2pio state machine, e.g.,
```python
    def __init__(self, pin_a, pin_b):
        if not rp2pio.pins_are_sequential([pin_a, pin_b]):
            raise ValueError("Pins must be sequential")
```
2021-03-04 11:26:33 -06:00
Jeff Epler ff62b0d2c0 StateMachine: Add pull up/down for inputs 2021-03-04 11:26:29 -06:00
Jeff Epler 68ac14b309 StateMachine: Add in_available property
I named the property `in_available` because it is similar to pyserial.
However, it indicates the number of words in the fifo, not the number
of bytes.
2021-03-04 11:14:09 -06:00
Dan Halbert f41fb6fafc
Apply suggestions from code review
copyediting
2021-03-02 12:01:50 -05:00
Jonny Bergdahl f7eac46c78
Update StateMachine.c
Changed woring to use max instead
2021-02-27 00:07:30 +01:00
Scott Shawcroft 360475e266
Implement audiobusio and enhance PIO for it
This adds I2SOut and PDMIn support via PIO.

StateMachines can now:
 * read and read while writing
 * transfer in 1, 2 or 4 byte increments
 * init pins based on expected defaults automatically
 * be stopped and restarted
 * rxfifo can be cleared and rxstalls detected (good for tracking when
   the reading code isn't keeping up)

Fixes #4162
2021-02-23 15:50:00 -08:00
Jason Nichols ae262cde55 Fix maximum PIO instructions 2021-02-06 10:54:25 -05:00
Scott Shawcroft b47fd08b20
copy editing 2021-01-21 10:17:40 -08:00
Scott Shawcroft b0f7fd933f
type fix 2021-01-20 23:33:00 -08:00
Scott Shawcroft 733094aead
Add initial RP2040 support
The RP2040 is new microcontroller from Raspberry Pi that features
two Cortex M0s and eight PIO state machines that are good for
crunching lots of data. It has 264k RAM and a built in UF2
bootloader too.

Datasheet: https://pico.raspberrypi.org/files/rp2040_datasheet.pdf
2021-01-20 19:16:56 -08:00