diff options
| -rw-r--r-- | docs/library/rp2.rst | 8 | ||||
| -rw-r--r-- | ports/rp2/modules/rp2.py | 9 |
2 files changed, 10 insertions, 7 deletions
diff --git a/docs/library/rp2.rst b/docs/library/rp2.rst index f0189327d..a215e98b5 100644 --- a/docs/library/rp2.rst +++ b/docs/library/rp2.rst @@ -23,7 +23,7 @@ The ``rp2`` module includes functions for assembling PIO programs. For running PIO programs, see :class:`rp2.StateMachine`. -.. function:: asm_pio(*, out_init=None, set_init=None, sideset_init=None, in_shiftdir=0, out_shiftdir=0, autopush=False, autopull=False, push_thresh=32, pull_thresh=32, fifo_join=PIO.JOIN_NONE) +.. function:: asm_pio(*, out_init=None, set_init=None, sideset_init=None, side_pindir=False, in_shiftdir=PIO.SHIFT_LEFT, out_shiftdir=PIO.SHIFT_LEFT, autopush=False, autopull=False, push_thresh=32, pull_thresh=32, fifo_join=PIO.JOIN_NONE) Assemble a PIO program. @@ -35,8 +35,10 @@ For running PIO programs, see :class:`rp2.StateMachine`. - *out_init* configures the pins used for ``out()`` instructions. - *set_init* configures the pins used for ``set()`` instructions. There can be at most 5. - - *sideset_init* configures the pins used side-setting. There can be at - most 5. + - *sideset_init* configures the pins used for ``.side()`` modifiers. There + can be at most 5. + - *side_pindir* when set to ``True`` configures ``.side()`` modifiers to be + used for pin directions, instead of pin values (the default, when ``False``). The following parameters are used by default, but can be overridden in `StateMachine.init()`: diff --git a/ports/rp2/modules/rp2.py b/ports/rp2/modules/rp2.py index 9d13bf1b5..e9be7dac8 100644 --- a/ports/rp2/modules/rp2.py +++ b/ports/rp2/modules/rp2.py @@ -26,20 +26,21 @@ class PIOASMEmit: out_init=None, set_init=None, sideset_init=None, - in_shiftdir=0, - out_shiftdir=0, + side_pindir=False, + in_shiftdir=PIO.SHIFT_LEFT, + out_shiftdir=PIO.SHIFT_LEFT, autopush=False, autopull=False, push_thresh=32, pull_thresh=32, - fifo_join=0, + fifo_join=PIO.JOIN_NONE, ): # array is a built-in module so importing it here won't require # scanning the filesystem. from array import array self.labels = {} - execctrl = 0 + execctrl = side_pindir << 29 shiftctrl = ( fifo_join << 30 | (pull_thresh & 0x1F) << 25 |