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fadeled.txt   (text)
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#Func Name: fadeled.pio
#Date: 2022EMay30
#Author: Unknown
#Category: Projects/PIO/pico in 215
#Code: PIO_ statemachine
#Purpose: fadeLed.pio
#Article: 177
#Used in fadeLed_pico.py
#Remark: PIO is set up by Python code 

def __init__(self, sm_id, pin, max_count, count_freq):
    self._sm = StateMachine(sm_id, pwm_prog, freq=2 * count_freq, sideset_base=Pin(pin))
    # Use exec() to load max count into ISR
    self._sm.put(max_count)
    self._sm.exec("pull()")
    self._sm.exec("mov(isr, osr)")
    self._sm.active(1)
    self._max_count = max_count
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/fadeled.txt