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Merge branch 'txinh' of git://github.com/ab0tj/direwolf into ab0tj-txinh 

Conflicts:
	hdlc_rec.c

	modified:   atest.c
	modified:   audio.h
	modified:   config.c
	modified:   hdlc_rec.c
	modified:   ptt.c
	modified:   ptt.h
This commit is contained in:
WB2OSZ 2015-11-29 11:22:25 -05:00
parent 178375f3ba d9ca8cdc52
commit b68039d2c6
6 changed files with 268 additions and 105 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
atest.c
View File

@ -705,6 +705,10 @@ void ptt_set (int ot, int chan, int ptt_signal)
return;
}
int get_input (int it, int chan)
{
return -1;
}
static void usage (void) {

10
audio.h
View File

@ -191,6 +191,16 @@ struct audio_s {
} octrl[NUM_OCTYPES];
#define ICTYPE_TXINH 0
#define NUM_ICTYPES 1
struct {
ptt_method_t method; /* none, serial port, GPIO, LPT. */
int gpio; /* GPIO number */
int invert; /* 1 = active low */
} ictrl[NUM_ICTYPES];
/* Transmit timing. */
int dwait; /* First wait extra time for receiver squelch. */

47
config.c
View File

@ -1610,6 +1610,53 @@ void config_init (char *fname, struct audio_s *p_audio_config,
} /* end of PTT */
/*
* INPUTS
*
* TXINH - TX holdoff input
*
* xxx GPIO [-]gpio-num (only type supported yet)
*/
else if (strcasecmp(t, "TXINH") == 0) {
int it;
char itname[8];
it = ICTYPE_TXINH;
strlcpy (itname, "TXINH", sizeof(itname));
t = split(NULL,0);
if (t == NULL) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Config file line %d: Missing input type name for %s command.\n", line, itname);
continue;
}
if (strcasecmp(t, "GPIO") == 0) {
#if __WIN32__
text_color_set(DW_COLOR_ERROR);
dw_printf ("Config file line %d: %s with GPIO is only available on Linux.\n", line, itname);
#else
t = split(NULL,0);
if (t == NULL) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Config file line %d: Missing GPIO number for %s.\n", line, itname);
continue;
}
if (*t == '-') {
p_audio_config->achan[channel].ictrl[it].gpio = atoi(t+1);
p_audio_config->achan[channel].ictrl[it].invert = 1;
}
else {
p_audio_config->achan[channel].ictrl[it].gpio = atoi(t);
p_audio_config->achan[channel].ictrl[it].invert = 0;
}
p_audio_config->achan[channel].ictrl[it].method = PTT_METHOD_GPIO;
#endif
}
}
/*
* DWAIT - Extra delay for receiver squelch.

6
hdlc_rec.c
View File

@ -626,10 +626,13 @@ void dcd_change (int chan, int subchan, int slice, int state)
* at the same time. The channel is busy if ANY of them
* thinks the channel is busy.
*
* Version 1.3: New option for input signal to inhibit transmit.
*
*--------------------------------------------------------------------*/
int hdlc_rec_data_detect_any (int chan)
{
int sc;
assert (chan >= 0 && chan < MAX_CHANS);
@ -637,6 +640,9 @@ int hdlc_rec_data_detect_any (int chan)
if (composite_dcd[chan][sc] != 0)
return (1);
}
if (get_input(ICTYPE_TXINH, chan) == 1) return (1);
return (0);
} /* end hdlc_rec_data_detect_any */

305
ptt.c
View File

@ -147,6 +147,135 @@ void ptt_set_debug(int debug)
ptt_debug_level = debug;
}
/*-------------------------------------------------------------------
*
* Name: export_gpio
*
* Purpose: Tell the GPIO subsystem to export a GPIO line for
* us to use, and set the initial state of the GPIO.
*
* Inputs: gpio - GPIO line to export
* invert: - Is the GPIO active low?
* direction: - 0 for input, 1 for output
*
* Outputs: None.
*
*------------------------------------------------------------------*/
void export_gpio(int gpio, int invert, int direction)
{
HANDLE fd;
char stemp[80];
struct stat finfo;
int err;
fd = open("/sys/class/gpio/export", O_WRONLY);
if (fd < 0) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Permissions do not allow ordinary users to access GPIO.\n");
dw_printf ("Log in as root and type this command:\n");
dw_printf (" chmod go+w /sys/class/gpio/export /sys/class/gpio/unexport\n");
exit (1);
}
snprintf (stemp, sizeof(stemp), "%d", gpio);
if (write (fd, stemp, strlen(stemp)) != strlen(stemp)) {
int e = errno;
/* Ignore EBUSY error which seems to mean */
/* the device node already exists. */
if (e != EBUSY) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error writing \"%s\" to /sys/class/gpio/export, errno=%d\n", stemp, e);
dw_printf ("%s\n", strerror(e));
exit (1);
}
}
close (fd);
/*
Idea for future:
On the RPi, the device path for GPIO number XX is /sys/class/gpio/gpioXX.
There was a report that it is different for the Cubieboard. For instance
GPIO 61 has gpio61_pi13 in the path. This indicates connector "i" pin 13.
For another similar single board computer, we find the same thing:
https://www.olimex.com/wiki/A20-OLinuXino-LIME#GPIO_under_Linux
How should we deal with this? Some possibilities:
(1) The user might explicitly mention the name in direwolf.conf.
(2) We might be able to find the names in some system device config file.
(3) Get a directory listing of /sys/class/gpio then search for a
matching name. Suppose we wanted GPIO 61. First look for an exact
match to "gpio61". If that is not found, look for something
matching the pattern "gpio61_*".
*/
/*
* We will have the same permission problem if not root.
* We only care about "direction" and "value".
*/
snprintf (stemp, sizeof(stemp), "sudo chmod go+rw /sys/class/gpio/gpio%d/direction", gpio);
err = system (stemp);
snprintf (stemp, sizeof(stemp), "sudo chmod go+rw /sys/class/gpio/gpio%d/value", gpio);
err = system (stemp);
snprintf (stemp, sizeof(stemp), "/sys/class/gpio/gpio%d/value", gpio);
if (stat(stemp, &finfo) < 0) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Failed to get status for %s \n", stemp);
dw_printf ("%s\n", strerror(e));
exit (1);
}
if (geteuid() != 0) {
if ( ! (finfo.st_mode & S_IWOTH)) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Permissions do not allow ordinary users to access GPIO.\n");
dw_printf ("Log in as root and type these commands:\n");
dw_printf (" chmod go+rw /sys/class/gpio/gpio%d/direction", gpio);
dw_printf (" chmod go+rw /sys/class/gpio/gpio%d/value", gpio);
exit (1);
}
}
/*
* Set output direction and initial state
*/
snprintf (stemp, sizeof(stemp), "/sys/class/gpio/gpio%d/direction", gpio);
fd = open(stemp, O_WRONLY);
if (fd < 0) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error opening %s\n", stemp);
dw_printf ("%s\n", strerror(e));
exit (1);
}
char gpio_val[8];
if (direction) {
if (invert) {
strlcpy (gpio_val, "high", sizeof(gpio_val));
}
else {
strlcpy (gpio_val, "low", sizeof(gpio_val));
}
}
else {
strlcpy (gpio_val, "in", sizeof(gpio_val));
}
if (write (fd, gpio_val, strlen(gpio_val)) != strlen(gpio_val)) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error writing initial state to %s\n", stemp);
dw_printf ("%s\n", strerror(e));
exit (1);
}
close (fd);
}
/*-------------------------------------------------------------------
*
@ -368,6 +497,11 @@ void ptt_init (struct audio_s *audio_config_p)
using_gpio = 1;
}
}
for (ot = 0; ot < NUM_ICTYPES; ot++) {
if (audio_config_p->achan[ch].ictrl[ot].method == PTT_METHOD_GPIO) {
using_gpio = 1;
}
}
}
}
@ -434,111 +568,12 @@ void ptt_init (struct audio_s *audio_config_p)
int ot;
for (ot = 0; ot < NUM_OCTYPES; ot++) {
if (audio_config_p->achan[ch].octrl[ot].ptt_method == PTT_METHOD_GPIO) {
char stemp[80];
struct stat finfo;
int err;
fd = open("/sys/class/gpio/export", O_WRONLY);
if (fd < 0) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Permissions do not allow ordinary users to access GPIO.\n");
dw_printf ("Log in as root and type this command:\n");
dw_printf (" chmod go+w /sys/class/gpio/export /sys/class/gpio/unexport\n");
exit (1);
}
snprintf (stemp, sizeof(stemp), "%d", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
if (write (fd, stemp, strlen(stemp)) != strlen(stemp)) {
int e = errno;
/* Ignore EBUSY error which seems to mean */
/* the device node already exists. */
if (e != EBUSY) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error writing \"%s\" to /sys/class/gpio/export, errno=%d\n", stemp, e);
dw_printf ("%s\n", strerror(e));
exit (1);
}
}
close (fd);
/*
Idea for future:
On the RPi, the device path for GPIO number XX is /sys/class/gpio/gpioXX.
There was a report that it is different for the Cubieboard. For instance
GPIO 61 has gpio61_pi13 in the path. This indicates connector "i" pin 13.
For another similar single board computer, we find the same thing:
https://www.olimex.com/wiki/A20-OLinuXino-LIME#GPIO_under_Linux
How should we deal with this? Some possibilities:
(1) The user might explicitly mention the name in direwolf.conf.
(2) We might be able to find the names in some system device config file.
(3) Get a directory listing of /sys/class/gpio then search for a
matching name. Suppose we wanted GPIO 61. First look for an exact
match to "gpio61". If that is not found, look for something
matching the pattern "gpio61_*".
*/
/*
* We will have the same permission problem if not root.
* We only care about "direction" and "value".
*/
snprintf (stemp, sizeof(stemp), "sudo chmod go+rw /sys/class/gpio/gpio%d/direction", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
err = system (stemp);
snprintf (stemp, sizeof(stemp), "sudo chmod go+rw /sys/class/gpio/gpio%d/value", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
err = system (stemp);
snprintf (stemp, sizeof(stemp), "/sys/class/gpio/gpio%d/value", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
if (stat(stemp, &finfo) < 0) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Failed to get status for %s \n", stemp);
dw_printf ("%s\n", strerror(e));
exit (1);
}
if (geteuid() != 0) {
if ( ! (finfo.st_mode & S_IWOTH)) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Permissions do not allow ordinary users to access GPIO.\n");
dw_printf ("Log in as root and type these commands:\n");
dw_printf (" chmod go+rw /sys/class/gpio/gpio%d/direction", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
dw_printf (" chmod go+rw /sys/class/gpio/gpio%d/value", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
exit (1);
}
}
/*
* Set output direction with initial state off.
*/
snprintf (stemp, sizeof(stemp), "/sys/class/gpio/gpio%d/direction", audio_config_p->achan[ch].octrl[ot].ptt_gpio);
fd = open(stemp, O_WRONLY);
if (fd < 0) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error opening %s\n", stemp);
dw_printf ("%s\n", strerror(e));
exit (1);
}
char hilo[8];
if (audio_config_p->achan[ch].octrl[ot].ptt_invert) {
strlcpy (hilo, "high", sizeof(hilo));
}
else {
strlcpy (hilo, "low", sizeof(hilo));
}
if (write (fd, hilo, strlen(hilo)) != strlen(hilo)) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error writing initial state to %s\n", stemp);
dw_printf ("%s\n", strerror(e));
exit (1);
}
close (fd);
export_gpio(audio_config_p->achan[ch].octrl[ot].ptt_gpio, audio_config_p->achan[ch].octrl[ot].ptt_invert, 1);
}
}
for (ot = 0; ot < NUM_ICTYPES; ot++) {
if (audio_config_p->achan[ch].ictrl[ot].method == PTT_METHOD_GPIO) {
export_gpio(audio_config_p->achan[ch].ictrl[ot].gpio, audio_config_p->achan[ch].ictrl[ot].invert, 0);
}
}
}
@ -823,7 +858,67 @@ void ptt_set (int ot, int chan, int ptt_signal)
} /* end ptt_set */
/*-------------------------------------------------------------------
*
* Name: get_input
*
* Purpose: Read the value of an input line
*
* Inputs: it - Input type (ICTYPE_TCINH supported so far)
* chan - Audio channel number
*
* Outputs: 0 = inactive, 1 = active, -1 = error
*
* ------------------------------------------------------------------*/
int get_input (int it, int chan)
{
assert (it >= 0 && it < NUM_ICTYPES);
assert (chan >= 0 && chan < MAX_CHANS);
if ( ! save_audio_config_p->achan[chan].valid) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Internal error, get_input ( %d, %d ), did not expect invalid channel.\n", it, chan);
return -1;
}
#if __WIN32__
#else
if (save_audio_config_p->achan[chan].ictrl[it].method == PTT_METHOD_GPIO) {
int fd;
char stemp[80];
snprintf (stemp, sizeof(stemp), "/sys/class/gpio/gpio%d/value", save_audio_config_p->achan[chan].ictrl[it].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 input.\n", stemp);
dw_printf ("%s\n", strerror(e));
return -1;
}
char vtemp[2];
if (read (fd, vtemp, 1) != 1) {
int e = errno;
text_color_set(DW_COLOR_ERROR);
dw_printf ("Error getting GPIO %d value\n", save_audio_config_p->achan[chan].ictrl[it].gpio);
dw_printf ("%s\n", strerror(e));
}
close (fd);
if (atoi(vtemp) != save_audio_config_p->achan[chan].ictrl[it].invert) {
return 1;
}
else {
return 0;
}
}
#endif
return -1; /* Method was none, or something went wrong */
}
/*-------------------------------------------------------------------
*

1
ptt.h
View File

@ -15,6 +15,7 @@ void ptt_set (int octype, int chan, int ptt);
void ptt_term (void);
int get_input (int it, int chan);
#endif