bargraph.c File Reference

Example code for the Bar Graph Cubelet. More...

Detailed Description

Binary

Sets the bars to display the block value in binary over 8 bits.

#include "cubelet.h"
 
void setup()
{
 
}
 
void loop()
{
    block_value = weighted_average();
 
    //set_binary(block_value);
 
    //or implement it here for educational purposes:
 
    //set bars 1-8 according to binary value
    for (unsigned int i = 0; i<10; i++){
        if (block_value & (1<<i)){ //Use a bit shift to create a bit mask to determine the i'th binary value.
            set_bar(i+1);
        }
        else {
            clear_bar(i+1);
        }
    }
}
 
 

Digits

Displays the block value in base 10. First number to be displayed is the hundreds place value, then the tens place value, finally the ones place value. There's a small rest before displaying the next block value. 255 will therefore show one after another: 2, 5, 5, nothing

#include "cubelet.h"
 
 
void setup()
{
// intentionaly empty
}
 
void loop()
{
    block_value = weighted_average();
 
    unsigned int hundreds_digit = block_value/100;
    unsigned int tens_digit = (block_value / 10) % 10;
    unsigned int ones_digit = block_value % 10;
 
 
    for (unsigned int i=0; i<4; i++){ //Four states are: 1: hundreds digit. 2: tens digit. 3: ones digit. 4: Rest.
        switch (i){
            case 0:
                set_bar_graph(hundreds_digit);
            break;
            case 1:
                set_bar_graph(tens_digit);
            break;
            case 2:
                set_bar_graph(ones_digit);
            break;
            case 3:
                set_bar_graph(0); //Rest
            break;
        }
 
        wait(750);
    }
}
 
 

Pong

#include "cubelet.h"
#include <stdbool.h>
 
unsigned int current_bar = 0;
bool direction_positive = true;
 
void setup()
{
 
}
 
void loop()
{
    block_value = weighted_average();
 
    if (direction_positive){
        if (current_bar == 9) direction_positive = false; //If at the upper limit, turn around
        else current_bar++; //otherwise increment current bar
    }
    else { //negative direction
        if (current_bar == 0) direction_positive = true; //If at the lower limit, turn around
        else current_bar--; //otherwise decrement current bar
    }
 
    set_bar_graph(0); //clear all bars
    set_bar(current_bar); //set the current siongle bar
 
    wait(inverse(block_value) + 15); //speed dependent on block value
}