diff options
| author | robert-hh <robert@hammelrath.com> | 2023-05-15 11:17:27 +0200 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2024-07-12 22:59:31 +1000 |
| commit | ee1036023ef199636d96e70c6c7ed587ccaab92e (patch) | |
| tree | 9c795168696d3a3eede51981c59b9a1f9237fcb6 /drivers/bus/spi.h | |
| parent | 20b00ca501f5e7ff096ae3e31c3e7e7d99963d23 (diff) | |
extmod/machine_spi: Support firstbit=LSB for machine.SoftSPI.
Being able to send data out in LSB format can be useful, and having support
in the low-level driver is much better than requiring Python code to
reorder the bits before sending them / after receiving them. In particular
if the hardware does not support the LSB format (eg RP2040) then one needs
to use the SoftSPI in LSB mode.
For this change a default definition of `MICROPY_PY_MACHINE_SPI_MSB/_LSB`
was added to `py/mpconfig.h`, making them available to all ports. The
identical defines in `esp32/mpconfigport.h` were deleted.
Resolves issues #5340, #11404.
Signed-off-by: robert-hh <robert@hammelrath.com>
Diffstat (limited to 'drivers/bus/spi.h')
| -rw-r--r-- | drivers/bus/spi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/bus/spi.h b/drivers/bus/spi.h index 6d1b9c2f8..df7f790df 100644 --- a/drivers/bus/spi.h +++ b/drivers/bus/spi.h @@ -42,6 +42,7 @@ typedef struct _mp_soft_spi_obj_t { uint32_t delay_half; // microsecond delay for half SCK period uint8_t polarity; uint8_t phase; + uint8_t firstbit; mp_hal_pin_obj_t sck; mp_hal_pin_obj_t mosi; mp_hal_pin_obj_t miso; |