Hexorg

#include <avr/io.h>
#include <inttypes.h>
#include <avr/pgmspace.h>
#include <stdio.h>

#include "uart.h" // uart.h and uart.c from libnerdkits, unchanged

char inttohex(uint8_t n)
{
    switch (n)
    {
        case 0: return '0';
        case 1: return '1';
        case 2: return '2';
        case 3: return '3';
        case 4: return '4';
        case 5: return '5';
        case 6: return '6';
        case 7: return '7';
        case 8: return '8';
        case 9: return '9';
        case 10: return 'A';
        case 11: return 'B';
        case 12: return 'C';
        case 13: return 'D';
        case 14: return 'E';
        case 15: return 'F';
    }
    return 0;
}

void tell_uart(uint8_t c)
{
    uart_write(inttohex((c>>4) & 0x0F));
    uart_write(inttohex(c & 0x0F));
    uart_write(' ');
    uart_write('\'');
    uart_write(c);
    uart_write('\'');
    uart_write('\r');
    uart_write('\n');
}

void setup()
{
    uart_init();
    uart_init();
    FILE uart_stream = FDEV_SETUP_STREAM(uart_putchar, uart_getchar, _FDEV_SETUP_RW);
    stdin = stdout = &uart_stream;

}

/*******************************************************************************
******* MAIN FUNCTION **********************************************************
*******************************************************************************/
int main()
{
    setup();
    uint8_t i, k;
    k = i = 0;

    /*printf("TEST"); // doesn't work */


    tell_uart('R');
    tell_uart('e');
    tell_uart('a');
    tell_uart('d');  // Works
    tell_uart('y');
    tell_uart(' ');

    return 0;
}