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Support for GPIO TX inhibit line #11

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Support for GPIO TX inhibit line #11

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dd2d740
Config changes for TXINH
ab0tj Nov 12, 2015
0d7003b
Init for TXINH
ab0tj Nov 12, 2015
401db2d
Add TXINH check to hdlc_data_detect_any
ab0tj Nov 12, 2015
b81262f
TXINH testing fixes
ab0tj Nov 12, 2015
42a2398
Disable obnoxious white background on arm targets
ab0tj Nov 12, 2015
c15c3ee
Tested TXINH, fixed it
ab0tj Nov 13, 2015
9b36294
TXINH logic was reversed
ab0tj Nov 13, 2015
c7c591a
Revert "Disable obnoxious white background on arm targets"
ab0tj Nov 16, 2015
ea8a613
Reapply DCD logic reversal fix
ab0tj Nov 16, 2015
3f5a4ac
Re-disable white background for this fork
ab0tj Nov 16, 2015
bf691b7
Revert "Re-disable white background for this fork"
ab0tj Nov 16, 2015
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Add TXINH check to hdlc_data_detect_any
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@ab0tj
ab0tj committed Nov 12, 2015
commit 401db2d1d5e562345ff54890ed6ae4c63fdec56f
49 changes: 48 additions & 1 deletion hdlc_rec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,13 @@
#include "demod_9600.h" /* for descramble() */
#include "ptt.h"

#if __WIN32__
#else
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#endif


//#define TEST 1 /* Define for unit testing. */

Expand Down Expand Up @@ -125,6 +132,8 @@ static void dcd_change (int chan, int subchan, int state);
*
***********************************************************************************/

static struct audio_s *save_audio_config_p;

static int was_init = 0;

void hdlc_rec_init (struct audio_s *pa)
Expand All @@ -137,6 +146,8 @@ void hdlc_rec_init (struct audio_s *pa)

assert (pa != NULL);

save_audio_config_p = pa;

for (j=0; j<MAX_CHANS; j++)
{
composite_dcd[j] = 0;
Expand Down Expand Up @@ -632,10 +643,46 @@ static void dcd_change (int chan, int subchan, int state)
int hdlc_rec_data_detect_any (int chan)
{
int subchan;
int busy;

assert (chan >= 0 && chan < MAX_CHANS);

return (composite_dcd[chan] != 0);
if (composite_dcd[chan] != 0) busy = 1;

#if __WIN32__
#else

if (save_audio_config_p->achan[chan].txinh.enabled) {
int fd;
char stemp[80];

sprintf (stemp, "/sys/class/gpio/gpio%d/value", save_audio_config_p->achan[chan].txinh.gpio);

fd = open(stemp, O_RDONLY);
if (fd < 0) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error opening %s to check TXINH.\n", stemp);
dw_printf ("%s\n", strerror(e));
return;
}

if (read (fd, stemp, 1) != 1) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error getting GPIO %d value for TXINH\n", save_audio_config_p->achan[chan].txinh.gpio);
dw_printf ("%s\n", strerror(e));
}
close (fd);

char vtemp[2];
sprintf (vtemp, "%d", save_audio_config_p->achan[chan].txinh.invert);

if (!strcmp (stemp, vtemp)) busy = 1;
}
#endif

return busy;

} /* end hdlc_rec_data_detect_any */

Expand Down