41 lines
773 B
Python
41 lines
773 B
Python
"""Shift and reverse"""
|
|
import rp2pio
|
|
import adafruit_pioasm
|
|
import array
|
|
|
|
|
|
program = """
|
|
.program debug_register
|
|
set y, 2 ; set a value in y
|
|
|
|
|
|
; send it to be printed
|
|
mov isr, y
|
|
push noblock ; and use PUSH to put it on the receive FIFO
|
|
|
|
; shift and reverse
|
|
in y, 1 ; get bits
|
|
mov isr, :: isr ; reverse it
|
|
|
|
; print again
|
|
push noblock ; and use PUSH to put it on the receive FIFO
|
|
"""
|
|
|
|
assembled = adafruit_pioasm.assemble(program)
|
|
|
|
## set up a statemachine
|
|
sm = rp2pio.StateMachine(
|
|
assembled,
|
|
frequency=2000,
|
|
)
|
|
|
|
buffer = array.array("I", [0])
|
|
|
|
# read the data
|
|
sm.readinto(buffer)
|
|
print("{0} 0b{0:032b} 0x{0:x}".format(buffer[0]))
|
|
|
|
# read the data
|
|
sm.readinto(buffer)
|
|
print("{0} 0b{0:032b} 0x{0:x}".format(buffer[0]))
|