From: jansencomplex@gmail.com   
      
   Den 01-11-2024 kl. 22:03 skrev Lawrence D'Oliveiro:   
   > On Fri, 1 Nov 2024 07:19:07 +0100, Samson wrote:   
   >   
   >> [how] do i  calculate the frquency  and pulse width?   
   >   
   > Let’s see, cycle duration = 1 ÷ frequency, so pulse width must be duty   
   > cycle × cycle duration.   
   >   
   > What do I win?   
      
   Sorry here are more info. The pico limits PWM 8 Hz and up  pulse width 1 - 100   
   % .   
   I have this program and i works  i understand how it works.   
      
      
   my problem was understanding >> dup[delay] ?   
      
   =====   
   # Example using PIO to blink an LED and raise an IRQ at 1Hz.   
      
   import time   
   from machine import Pin   
   import rp2   
      
      
   @rp2.asm_pio(set_init=rp2.PIO.OUT_LOW)   
   def blink_1hz():   
       # Cycles: 1 + 1 + 6 + 32 * (30 + 1) = 1000   
       irq(rel(0))   
       set(pins, 1)   
       set(x, 31)                  [5]   
       label("delay_high")   
       nop()                       [29]   
       jmp(x_dec, "delay_high")   
      
       # Cycles: 1 + 7 + 32 * (30 + 1) = 1000   
       set(pins, 0)   
       set(x, 31)                  [6]   
       label("delay_low")   
       nop()                       [29]   
       jmp(x_dec, "delay_low")   
      
      
   # Create the StateMachine with the blink_1hz program, outputting on Pin(25).   
   sm = rp2.StateMachine(0, blink_1hz, freq=2000, set_base=Pin(25))   
      
   # Set the IRQ handler to print the millisecond timestamp.   
   sm.irq(lambda p: print(time.ticks_ms()))   
      
   # Start the StateMachine.   
   sm.active(1)   
      
   --- SoupGate-Win32 v1.05   
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