.program oscillate
pause:
    pull block
    out x,32
.wrap_target
    pull noblock
    out x, 32
    mov y, x
    set pins, 1   ; Pin ON
    jmp y-- lp1   ; Delay for (x + 1) cycles, x is a 32 bit number
    jmp pause
lp1:
    jmp y-- lp1   ; Delay for (x + 1) cycles, x is a 32 bit number
    mov y, x
    set pins, 0 [2]  ; Pin OFF
lp2:
    jmp y-- lp2   ; Delay for the same number of cycles again
.wrap             ; Blink forever!


% c-sdk {
// this is a raw helper function for use by the user which sets up the GPIO output, and configures the SM to output on a particular pin

void oscillate_program_init(PIO pio, uint sm, uint offset, uint pin) {
   pio_gpio_init(pio, pin);
   pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true);
   pio_sm_config c = oscillate_program_get_default_config(offset);
   sm_config_set_set_pins(&c, pin, 1);
   pio_sm_init(pio, sm, offset, &c);
}
%}