///////////////////////////////////
//
// program_8 project
//
// created 10/5/21 by tj
// rev 0
//
///////////////////////////////////
//
// Converting unsigned 8 bit to binary values for printing
//
// using an array to store the bits
//
// input - number from user
// output - binary value
//
///////////////////////////////////

#include "mbed.h"
#include <stdio.h>                      // only needed when printing

// function prototypes
uint8_t get_value(void);
void print_binary_8(uint8_t dec);

int main(void){
    setbuf(stdout, NULL);  // disable buffering when printing

    // splash 
    printf("\n\nprogram_8\n");
    printf("Using Mbed OS version %d.%d.%d\n\n", 
            MBED_MAJOR_VERSION, MBED_MINOR_VERSION, MBED_PATCH_VERSION);
    printf("Welcome to my binary printing program\n\n");
    
    uint8_t input_val;
    
    while(1){
        input_val = get_value();
        print_binary_8(input_val);
    }// end while
            
   return 0;
}// end main

uint8_t get_value(void){
    int tmp_val;
    
    printf("Please enter a decimal value to convert to unsigned 8 bit binary: ");
    scanf("%i", &tmp_val);
    
    while ((tmp_val < 0)|| (tmp_val > 255)){
        printf("%i cannot be represented by an 8 bit unsigned binary number!\n\n", tmp_val);
        printf("Please enter a decimal value to convert to insigned 8 bit binary: ");
        scanf("%i", &tmp_val);
    }// end while
        
    return (uint8_t)tmp_val;
}// end get_value

void print_binary_8(uint8_t dec){
    int i;
    int tmp_dec;
    uint8_t bin[8];
    
    tmp_dec = dec;
    
    for(i=0; i < 8; i++){
        bin[i] = tmp_dec % 2;
        tmp_dec = tmp_dec / 2;
    }

    printf("The value %i is ", dec);
    for(i=7; i >= 0; i--)
        printf("%i", bin[i]);
    printf(" in 8 bit unsigned binary\n\n");
    
    return;
}// end print_binary_8