int rtapi_app_main(void)
{
int n, retval, i;
if(num_chan && names[0]) {
rtapi_print_msg(RTAPI_MSG_ERR,"num_chan= and names= are mutually exclusive\n");
return -EINVAL;
}
if(!num_chan && !names[0]) num_chan = default_num_chan;
if(num_chan) {
howmany = num_chan;
} else {
for(i=0; names[i]; i++) {howmany = i+1;}
}
/* test for number of channels */
if ((howmany <= 0) || (howmany > MAX_CHAN)) {
rtapi_print_msg(RTAPI_MSG_ERR,
"SIGGEN: ERROR: invalid number of channels: %d\n", howmany);
return -1;
}
/* have good config info, connect to the HAL */
comp_id = hal_init("siggen");
if (comp_id < 0) {
rtapi_print_msg(RTAPI_MSG_ERR, "SIGGEN: ERROR: hal_init() failed\n");
return -1;
}
/* allocate shared memory for siggen data */
siggen_array = hal_malloc(howmany * sizeof(hal_siggen_t));
if (siggen_array == 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"SIGGEN: ERROR: hal_malloc() failed\n");
hal_exit(comp_id);
return -1;
}
/* export variables and functions for each siggen */
i = 0; // for names= items
for (n = 0; n < howmany; n++) {
/* export everything for this loop */
if(num_chan) {
char buf[HAL_NAME_LEN + 1];
rtapi_snprintf(buf, sizeof(buf), "siggen.%d", n);
retval = export_siggen(n, &(siggen_array[n]),buf);
} else {
retval = export_siggen(n, &(siggen_array[n]),names[i++]);
}
if (retval != 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"SIGGEN: ERROR: siggen %d var export failed\n", n);
hal_exit(comp_id);
return -1;
}
}
rtapi_print_msg(RTAPI_MSG_INFO,
"SIGGEN: installed %d signal generators\n", howmany);
hal_ready(comp_id);
return 0;
}
int rtapi_app_main(void)
{
int n, retval;
/* test for number of channels */
if ((num_chan <= 0) || (num_chan > MAX_CHAN)) {
rtapi_print_msg(RTAPI_MSG_ERR,
"SIGGEN: ERROR: invalid num_chan: %d\n", num_chan);
return -1;
}
/* have good config info, connect to the HAL */
comp_id = hal_init("siggen");
if (comp_id < 0) {
rtapi_print_msg(RTAPI_MSG_ERR, "SIGGEN: ERROR: hal_init() failed\n");
return -1;
}
/* allocate shared memory for siggen data */
siggen_array = hal_malloc(num_chan * sizeof(hal_siggen_t));
if (siggen_array == 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"SIGGEN: ERROR: hal_malloc() failed\n");
hal_exit(comp_id);
return -1;
}
/* export variables and functions for each siggen */
for (n = 0; n < num_chan; n++) {
/* export everything for this loop */
retval = export_siggen(n, &(siggen_array[n]));
if (retval != 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"SIGGEN: ERROR: siggen %d var export failed\n", n);
hal_exit(comp_id);
return -1;
}
}
rtapi_print_msg(RTAPI_MSG_INFO,
"SIGGEN: installed %d signal generators\n", num_chan);
hal_ready(comp_id);
return 0;
}