EVDO CDU-680 MOVILNET

Guia de instalación de modem EVDO CDU-680 en Debian ETCH.

1. Instalar los paquetes pppconfig y wvdial
aptitude install pppconfig wvdial

2. Cargar los módulos sg y usbserial
modprobe usbserial
modprobe sg

Para que los módulos se carguen en el inicio del sistema se deben introducir en el archivo /etc/modules

3। Compilar el siguiente código con gcc.
#include

#include

#include

#include

#include

/* Returns the line number and the line itself for the line in inputfile that begins with inputstring
Returns 0 if there is no such line
Returns -1 and prints an error message if the inputfile can't be opened*/

int find_line(char *inputfile, char *outputline, char *inputstring, int inputlength){
FILE *fp;
int linenumber = 0;

if((fp = fopen(inputfile,"r"))==NULL){
printf("Unable to open %s.\n", inputfile);
return -1;
}
do{
if(fgets(outputline, 128, fp)==NULL) return 0;
linenumber++;
} while(strncmp(outputline,inputstring,inputlength));
fclose(fp);

return linenumber;
}

int main(int argc) {
char file[26];
char string[20];
char devicename[9];
char line[128];
int fd;
struct {
unsigned int inputlength;
unsigned int outputlength;
char data[10];
} ifchg;

sprintf(devicename,"/dev/sda");
sprintf(string,"RDEVCHG1");
ifchg.inputlength = 9;
ifchg.outputlength = 0;
ifchg.data[0] = 0xff;
memcpy(ifchg.data + 1,string,strlen(string));

//Check if the device is plugged in and recognized, if so, get the /dev/sd? value.
sprintf(file,"/proc/scsi/sg/device_strs");
sprintf(string,"CMOTECH");
devicename[7] += find_line(file,line,string,strlen(string)) - 1;
if(devicename[7] < 'a'){ printf("Modem not found.\n"); return 1; } else printf("Modem found at %s\n", devicename); //Check if the device is mounted, if so, unmount it. sprintf(file,"/etc/mtab"); sprintf(string,"/media/CDU680_UMSD"); if(find_line(file,line,devicename,strlen(devicename)) > 0) umount2(string ,1);
//Change the mode.
if((fd = open(devicename,O_RDWR)) <= 0) {
printf("Unable to open %s , fd = %d.\n", devicename, fd);
return 2;
}
usleep(800);
ioctl(fd,FIBMAP,&ifchg);
close(fd);
return 0;
}

4. Despues de obtener el binario se debe ejecutar
./nombre_binario
el dira donde lo esta el moden y lo volvera

5.configuramos pppconfig
dns dinamico
6.conectamos con :

pon evdo

desconectar poff evdo