 #include "FastSPI_LED2.h"
-#include "Streaming.h"
 
 #define ROWS 10
 #define COLS 10

  }
  // Finally, the walking led
  walker_leds[current_pos] = moving_colours[current_colour];
  
  Serial << "s: " << decasecs << "; led: " << current_led << "; c: " << current_colour << "; p: " << current_pos << endl;
}

void update(){



unsigned long prevStepTime = 0;
unsigned long prevUpdateTime = 0;
unsigned long prevReportTime = 0;

void loop(){
  if(millis()-prevStepTime >= WALKER_TIMESTEP){
    unsigned long error = millis()-prevStepTime - WALKER_TIMESTEP;
    prevStepTime = millis() - error;
    draw_walker(decaseconds_left--);
    if(decaseconds_left%10==0){
      writeDigits(decaseconds_left/10);
    }
  }
  
  if(millis()-prevUpdateTime >= UPDATE_TIME){
