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add support for Sierra Wireless qcserial NMEA-0183 interface #54

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add support for Sierra Wireless qcserial NMEA-0183 interface #54

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13 changes: 10 additions & 3 deletions serial.c
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
#include <pwd.h>

#define DEFSERIALQSIZE 32
#define SIERRA_GPS_START "$GPS_START\n"

struct if_serial {
int fd;
Expand Down Expand Up @@ -290,7 +291,8 @@ struct iface *init_serial (struct iface *ifa)
int ret;
struct kopts *opt;
int qsize=DEFSERIALQSIZE;

int send_gps_start = 0;

for(opt=ifa->options;opt;opt=opt->next) {
if (!strcasecmp(opt->var,"filename"))
devname=opt->val;
Expand Down Expand Up @@ -324,7 +326,9 @@ struct iface *init_serial (struct iface *ifa)
logerr(0,"Invalid queue size specified: %s",opt->val);
return(NULL);
}
} else {
} else if (!strcasecmp(opt->var, "sierragpsstart")) {
send_gps_start=atoi(opt->val);
} else {
logerr(0,"unknown interface option %s",opt->var);
return(NULL);
}
Expand All @@ -337,7 +341,7 @@ struct iface *init_serial (struct iface *ifa)
}

/* Open interface or die */
if ((ifs->fd=ttyopen(devname,ifa->direction)) < 0) {
if ((ifs->fd=ttyopen(devname, send_gps_start?BOTH:ifa->direction)) < 0) {
return(NULL);
}
DEBUG(3,"%s: opened serial device %s for %s",ifa->name,devname,
Expand All @@ -358,6 +362,9 @@ struct iface *init_serial (struct iface *ifa)
ifs->saved=1;
ifs->slavename=NULL;

if (send_gps_start)
write(ifs->fd, SIERRA_GPS_START, strlen(SIERRA_GPS_START));

/* Assign pointers to read, write and cleanup routines */
ifa->read=do_read;
ifa->readbuf=read_serial;
Expand Down