M17_Implementations/SP5WWP/m17-coder/m17-coder-sym.c

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>

#include "../inc/m17.h"

struct LSF
{
	uint8_t dst[6];
	uint8_t src[6];
	uint8_t type[2];
	uint8_t meta[112/8];
	uint8_t crc[2];
} lsf;

uint8_t data[16];

uint16_t fn=0; //16-bit Frame Number (for the stream mode)

uint8_t got_lsf=0;  //have we filled the LSF struct yet?


//main routine
int main(void)
{
    while(1)
    {
        if(got_lsf) //stream frames
        {
            //we could discard the data we already have
            while(read(STDIN_FILENO, &(lsf.dst), 6)<6);
            while(read(STDIN_FILENO, &(lsf.src), 6)<6);
            while(read(STDIN_FILENO, &(lsf.type), 2)<2);
            while(read(STDIN_FILENO, &(lsf.meta), 14)<14);
            while(read(STDIN_FILENO, data, 16)<16);

            printf("\tDATA: ");
            for(uint8_t i=0; i<16; i++)
                printf("%02X", data[i]);
            printf("\n");
        }
        else //LSF
        {
            while(read(STDIN_FILENO, &(lsf.dst), 6)<6);
            while(read(STDIN_FILENO, &(lsf.src), 6)<6);
            while(read(STDIN_FILENO, &(lsf.type), 2)<2);
            while(read(STDIN_FILENO, &(lsf.meta), 14)<14);
            while(read(STDIN_FILENO, data, 16)<16);

            got_lsf=1;

            printf("DST: ");
            for(uint8_t i=0; i<6; i++)
                printf("%02X", lsf.dst[i]);
            printf(" SRC: ");
            for(uint8_t i=0; i<6; i++)
                printf("%02X", lsf.src[i]);
            printf(" TYPE: ");
            for(uint8_t i=0; i<2; i++)
                printf("%02X", lsf.type[i]);
            printf(" META: ");
            for(uint8_t i=0; i<14; i++)
                printf("%02X", lsf.meta[i]);
            printf("\n");
        }
    }

	return 0;
}