hello i have write i little c program for test :
here is the program:
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define MIA "/dev/dvb/adapter0/frontend0"
#define
MD "/dev/dvb/adapter0/demux0"
//#define DVR "/dev/dvb/adapter0/dvr0"
#define
DVR_FILE "/home/lucak904/Scrivania/Luca/prog_c/sat/mio.dat"
#define BUFFY
(188*20)
main()
{
struct dvb_frontend_info luca;
struct
dvb_frontend_parameters parametri;
struct dvb_frontend_parameters luca2;
struct dmx_pes_filter_params filtri;
parametri.frequency = 1197700;
parametri.inversion = INVERSION_AUTO;
parametri.u.qpsk.symbol_rate =
275;
parametri.u.qpsk.fec_inner = FEC_AUTO;
fe_status_t status;
int fd, min, max,chiudo_fd, chiudo_md, chiudo_dvr ,stato, pp, freq,
ritorno, sy_rate, tt, md,fec_inn, inv, dvr, dvr_out,len;
uint8_t buf
[BUFFY];
if((fd = open(MIA,O_RDWR)) < 0){
perror("FRONTEND
DEVICE: ");
return -1;
}
if (ioctl(fd, FE_SET_FRONTEND,
¶metri) < 0){
perror("QPSK TUNE: ");
return
-1;
}
if (ioctl(fd, FE_GET_FRONTEND ,&luca2) <0){
perror
("GET_INFO: ");
return -1;
}
printf("\nfreq :%d",
luca2.
frequency);
printf("\nsimbol_rate : %d", luca2.u.qpsk.symbol_rate);
printf("\ninversion : %d", luca2.inversion);
printf("\nfec : %d", luca2.
u.
qpsk.fec_inner);
if (ioctl(fd, FE_GET_INFO ,&luca) <0){
perror("GET_INFO: ");
return -1;
}
printf
("\nfreq min:%
d", luca.frequency_min);
printf("\nfreq max:%d", luca.
frequency_max);
if
(ioctl(fd, FE_READ_STATUS ,&status) <0){
perror
("FE_READ_STATUS: ");
return -1;
}
// apro il
demux
printf("\nstato :%d", status);
if((md = open(MD,
O_RDWR|O_NONBLOCK)) < 0)
{
perror("DEMUX DEVICE: ");
return -1;
}
//setto il demux
filtri.pid = 1296;
filtri.input =
DMX_IN_FRONTEND;
filtri.output = DMX_OUT_TAP;
filtri.
pes_type =
DMX_PES_OTHER;
filtri.flags = DMX_IMMEDIATE_START;
if (ioctl
(md,
DMX_SET_PES_FILTER, &filtri) < 0) {
perror("DEMUX DEVICE: ");
return -1;
}
//apro il dvr
//if ((dvr = open(DVR,
O_RDONLY|O_NONBLOCK)) < 0) {
// perror("DVR DEVICE : ");
//
/return -1;
// }
if ((dvr_out = open
("/home/lucak904/Scrivania/Luca/prog_c/sat/prova_scar.txt", O_WRONLY)) < 0) {
perror(" DVR FILE : ");
return -1;
}
if((len
= read(md,buf, BUFFY)) < 0){
perror("non leggo");
}
else{
write(dvr_out,buf,len);
}
chiudo_fd = close(fd);
chiudo_md = close(md);
//chiudo_dvr = close(dvr);
}
It is just a test
every time i get Resource temporarily unavailable
For my understanding it means
that nothing is readed from demux device, wath is wrong , the pid and frequency
are ok the SNR is more than 70%
Thanks
Luca
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