.program pio_blink
.wrap_target
        set y,0b00001
        mov pins, y
        set x, 31
label01:
        jmp x--, label01        [31]
;
        set y,0b00000
        mov pins, y
        set x, 31
label02:
        jmp x--, label02        [31]
.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 blink_program_init(PIO pio, uint sm, uint offset, uint pin, uint div) {
   pio_gpio_init(pio, pin);
   pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true);
   pio_sm_config c = pio_blink_program_get_default_config(offset);
   sm_config_set_clkdiv(&c, div);                                   // Set the clock divider for the state machine
   sm_config_set_out_pins(&c, pin, 1);
   pio_sm_init(pio, sm, offset, &c);
}
%}