File content as of revision 2:f256eebcade8:

//Author: Miguel Ruiz García
//Company: University of Cantabria. 2016
//mail: mrg47@alumnos.unican.es

#include "mbed.h"
#include "stdio.h"
#include <math.h>
#include "SDL_lib/SDL.h"
#include "functions.h"
#include "lora2.h"
//#include "sx1276-hal.h"
//#include "debug.h"
#include "lora_tansc.h"

//DigitalOut led(LED1);
DigitalIn button(PC_13);

//Serial uart(PA_2, PA_3);

#define BPS 128000
#define BITS 8
#define STOP_BITS 1
 

int main(int argc, char *argv[]){
    Serial pc(USBTX, USBRX);
    pc.baud(BPS);
    pc.format (BITS,SerialBase::None, STOP_BITS) ;

    /*led=1;
    
    wait (2);
    led=!led;*/
    short int m[HEIGHT][WIDTH][3];
    int i,j,veces=0;
    //debug( "start of transmission...\r\n" );
for(veces=0;veces<30;veces++){
    
    //myled=0;
    for(i=0;i<8;i++){
       for(j=0;j<320;j++){
                
                while(!pc.readable());
                    m[i][j][0]=(char)pc.getc();
                    
                while(!pc.readable());   
                    m[i][j][1]=(char)pc.getc();
                while(!pc.readable());
                    m[i][j][2]=(char)pc.getc();
        
        }
    }
    
        
    //myled=1;


    rgb_to_yuv(m);
    

     //debug( "DCT...\r\n" );
    int mat[8][8][3];
    for(i=0;i<HEIGHT;i+=8){
        for(j=0;j<WIDTH;j+=8){

            int k=0,l=0;

            for(k=i;k<i+8;k++){
                
                for(l=j;l<j+8;l++){
                    

                    mat[k-i][l-j][0]=m[k][l][0];
                    mat[k-i][l-j][1]=m[k][l][1];
                    mat[k-i][l-j][2]=m[k][l][2];
                   
                }
               

            }
            
            DCT(mat,m,i,j);// 'i' 'j' índices de los pixeles en x e y del macrobloque
 
        }
    
    }

    //debug( "CUANTIZAR...\r\n" );   
    cuantizador(m);

   
    short int *matriz =(short int *) malloc(sizeof(short int)*HEIGHT*WIDTH*3);
    //debug( "zig-zag...\r\n" );
    zig_zag(m,matriz);//OJO!!!!!
    //debug( "rlc...\r\n" );
    short int acumulador[3]={0x0000,0x0000,0x0000};
    RLC(matriz,acumulador);
    
    
    short int * temp1= (short int *) malloc(sizeof(short int)*acumulador[0]);//reserva de memoria exacta para cada una de las componenetes y u v
    short int * temp2= (short int *) malloc(sizeof(short int)*acumulador[1]);//U
    short int * temp3= (short int *) malloc(sizeof(short int)*acumulador[2]);//V

    RLC2(matriz,temp1,temp2,temp3);
    free(matriz);

    /*acumulador[0]=20;
    acumulador[1]=20;
    acumulador[2]=20;*/
    lora(temp1,acumulador[0],temp2,acumulador[1],temp3,acumulador[2]);
    //debug( "end of transmission...\r\n" );


    
    free(temp1);
    free(temp2);
    free(temp3);
    
    while(!pc.writeable());
    pc.printf("1");//OJO con ponerlo aqui arriba*/
    
    char h;
    h=acumulador[0]&0xff;
    
    while(!pc.writeable());
    pc.printf("%c",h);
    
    h=(acumulador[0]>>8) & 0xff;
    
    while(!pc.writeable());
    pc.printf("%c",h);



    h=acumulador[1]&0xff;
    
    while(!pc.writeable());
    pc.printf("%c",h);
    
    h=(acumulador[1]>>8)&0xff;
    
    while(!pc.writeable());
    pc.printf("%c",h);
    
    
    h=acumulador[2]&0xff;
    
    while(!pc.writeable());
    pc.printf("%c",h);
    
    h=(acumulador[2]>>8)&0xff;
    
    while(!pc.writeable());
    pc.printf("%c",h);//OJO con ponerlo aqui arriba
}
fuera:

 //http://www.martin-gardner.co.uk/how-to-connect-your-old-sd-card-to-an-arduino/
    DigitalOut led(LED1);
    while(1){
        
        led=1;
        wait(0.5);
        led=0;
        wait(0.5);
    }
    
}