Data Request using PIO Side Set

  
# Example of using writing a parallel byte from data
# for a more wrapped-up examples, see https://github.com/raspberrypi/pico-micropython-examples/blob/master/pio/pio_pwm.py

from machine import Pin
from rp2 import PIO, StateMachine, asm_pio
from time import sleep

@asm_pio(sideset_init=PIO.OUT_LOW, out_init=(rp2.PIO.OUT_HIGH,) * 8, out_shiftdir=PIO.SHIFT_RIGHT, 
 autopull=True, pull_thresh=16 )
def paral_prog():
    pull()        #.side(0)      
    out(pins, 8)  .side(1)   
    nop()         .side(0)     [1]
    
    

paral_sm = StateMachine(0, paral_prog, freq=100000, sideset_base=Pin(16), out_base=Pin(0))
#parallel data out pins 0-7, Data Ready out pin 16, 
paral_sm.active(1)

while True:
    for i in range(500):
        paral_sm.put(i)
#        print(i)
#       sleep(0.1 )