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setmod2: add cmdline args: modulator, frequency, bitrate

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This commit is contained in:
Marcin Kaluza 2017-10-19 14:27:56 +02:00
parent 0f05b1988a
commit fefdde5e00
1 changed files with 9 additions and 3 deletions
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12
apps/setmod2.c
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@ -26,22 +26,28 @@ static int set_property(int fd, uint32_t cmd, uint32_t data)
ret = ioctl(fd, FE_SET_PROPERTY, &c); ret = ioctl(fd, FE_SET_PROPERTY, &c);
if (ret < 0) { if (ret < 0) {
fprintf(stderr, "FE_SET_PROPERTY returned %d\n", errno); fprintf(stderr, "FE_SET_PROPERTY returned %d\n", errno);
perror("FE_SET_PROPERTY");
return -1; return -1;
} }
return 0; return 0;
} }
int main() int main(int argc, char ** argv)
{ {
if (argc < 3) {
fprintf(stderr, "Usage: %s /dev/dvb/adapterX/modY freq[MHz] bitrate[kbit/s]\n", argv[0]);
exit(1);
}
int fd; int fd;
struct dvb_mod_params mp; struct dvb_mod_params mp;
struct dvb_mod_channel_params mc; struct dvb_mod_channel_params mc;
fd = open("/dev/dvb/adapter0/mod0", O_RDONLY); fd = open(argv[1], O_RDONLY);
set_property(fd, MODULATOR_MODULATION, QAM_256); set_property(fd, MODULATOR_MODULATION, QAM_256);
set_property(fd, MODULATOR_SYMBOL_RATE, 6900000); set_property(fd, MODULATOR_SYMBOL_RATE, 6900000);
set_property(fd, MODULATOR_FREQUENCY, 114000000); set_property(fd, MODULATOR_FREQUENCY, atoi(argv[2])*1000000);
set_property(fd, MODULATOR_INPUT_BITRATE, atoi(argv[3])*1000);
close(fd); close(fd);
} }