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raspberrypipico:raspberrypipico [2021/03/11 19:06]
admin [Programmable I/O] 		raspberrypipico:raspberrypipico [2021/03/12 13:10]
admin [Programmable I/O]
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 ---- ----
 ==== Programmable I/O ==== ==== Programmable I/O ====
 +[[raspberrypipico:pico_pio|Programmable I/O]]\\
 +
 +----
 +[[https://www.youtube.com/watch?v=yYnQYF_Xa8g|In-depth: Raspberry Pi Pico's PIO - programmable I/O!]] by stacksmashing\\
 The RP Pico has eight state machines (0-7) including these parameters:\\ The RP Pico has eight state machines (0-7) including these parameters:\\
 - state machine number\\ - state machine number\\
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 ==The Nine State Machine Instructions== ==The Nine State Machine Instructions==
-  * in – Shifts 1 word of 32 bits at a time into the ISR from another location+  * in – Shifts 1 word of 32 bits at a time into the ISR
   * out – Shifts 1 word of 32 bits from the OSR e.g. out(pins, 4)   * out – Shifts 1 word of 32 bits from the OSR e.g. out(pins, 4)
-  * push – Sends data to the RX (input) FIFO+  * push – Sends data to the RX (input)
   * pull() – gets data from the TX (output),e.g. sm1.put(1234)   * pull() – gets data from the TX (output),e.g. sm1.put(1234)
   * mov() – moves data x or y in register, e.g. mov(y, osr) osr=output shift register   * mov() – moves data x or y in register, e.g. mov(y, osr) osr=output shift register
-  * irq – Sets or clears interrupt flag+  * irq – Sets or clears interrupt flag e.g. irq(rel(0)) in python: sm.irq(myFunction)
   * set() [] – Writes data to destination, 0=off, 1=on, delays 0 to 31 circles   * set() [] – Writes data to destination, 0=off, 1=on, delays 0 to 31 circles
   * wait – Pauses until a defined action happens   * wait – Pauses until a defined action happens
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 - nop () [] - no operations, delays 0 to 31 circles\\ - nop () [] - no operations, delays 0 to 31 circles\\
 - wrap_target() and wrap () - resets program counter and starts over again\\ - wrap_target() and wrap () - resets program counter and starts over again\\
-- irq() - interrupt, e.g. irq(rel(0)) in python: sm.irq(myFunction) 
 - lable() - sts a lable label("end")\\ - lable() - sts a lable label("end")\\
 - jmp () - jumps conditions:\\ - jmp () - jumps conditions:\\