Tooltron

#include <avr/interrupt.h>

#include <stdint.h>

#include "cardbox.h"

#define CR_ERR_BAD_PARITY   -1

#define CR_ERR_NO_START     -2

#define CR_ERR_NO_STOP      -3

#define CR_BUF_SIZE 800

typedef enum {

extern volatile cr_flag_t cr_flag;

extern volatile uint8_t read_card;

void card_reader_setup(void);

int8_t  parse_card(uint8_t *buf, uint8_t *buflen);

    }

    // Read data in on the downtick of the clock

        // Read data from card reader and flip since ours inverts

        cr_buf[cr_buf_idx] = !(PIND & CR_DATA);

        cr_buf_idx++;

    }

}