#include <stdio.h>
#include "pico/stdlib.h"

#define sm_Amenos 14
#define sm_Amais  13
#define sm_Bmais  12
#define sm_Bmenos 11

uint8_t sm_pin[4]={sm_Amenos,sm_Amais,sm_Bmenos,sm_Bmais};

bool sm_monofasico[4][4] = {{1,0,0,0}, {0,0,1,0}, {0,1,0,0}, {0,0,0,1}};
bool sm_bifasico[4][4] = {{1,0,0,1}, {1,0,1,0}, {0,1,1,0}, {0,1,0,1}};

int main(){
  stdio_init_all();

  for(uint8_t i=0;i<4;i++) {
    gpio_init( sm_pin[i]);
    gpio_set_dir(sm_pin[i],GPIO_OUT);
  }
  while(true){
    for (int8_t step=0; step>4; step++){
      for( uint8_t i=0;i<4;i++){
        gpio_put(sm_pin[i], sm_monofasico[step][i]);
      }
      sleep_ms(100);
    }
  }
}