mirror of https://github.com/wb2osz/direwolf.git
PTT init changes for TXINH
This commit is contained in:
Alex Swedenburg
parent
64f9313f77
commit
ebacfea517
2
audio.h
2
audio.h
|
|
@ -206,7 +206,7 @@ struct audio_s {
|
||||||
#define NUM_ICTYPES 1
|
#define NUM_ICTYPES 1
|
||||||
|
|
||||||
struct {
|
struct {
|
||||||
int enable; /* should we bother checking this input? */
|
ptt_method_t method; /* none, serial port, GPIO, LPT. */
|
||||||
int gpio; /* GPIO number */
|
int gpio; /* GPIO number */
|
||||||
int invert; /* 1 = active low */
|
int invert; /* 1 = active low */
|
||||||
} ictrl[NUM_ICTYPES];
|
} ictrl[NUM_ICTYPES];
|
||||||
|
|
|
||||||
1
config.c
1
config.c
|
|
@ -1641,6 +1641,7 @@ void config_init (char *fname, struct audio_s *p_audio_config,
|
||||||
p_audio_config->achan[channel].ictrl[it].gpio = atoi(t);
|
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].invert = 0;
|
||||||
}
|
}
|
||||||
|
p_audio_config->achan[channel].ictrl[it].method = PTT_METHOD_GPIO;
|
||||||
#endif
|
#endif
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
225
ptt.c
225
ptt.c
|
|
@ -147,6 +147,120 @@ void ptt_set_debug(int debug)
|
||||||
ptt_debug_level = debug;
|
ptt_debug_level = debug;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
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 +482,11 @@ void ptt_init (struct audio_s *audio_config_p)
|
||||||
using_gpio = 1;
|
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 +553,7 @@ void ptt_init (struct audio_s *audio_config_p)
|
||||||
int ot;
|
int ot;
|
||||||
for (ot = 0; ot < NUM_OCTYPES; ot++) {
|
for (ot = 0; ot < NUM_OCTYPES; ot++) {
|
||||||
if (audio_config_p->achan[ch].octrl[ot].ptt_method == PTT_METHOD_GPIO) {
|
if (audio_config_p->achan[ch].octrl[ot].ptt_method == PTT_METHOD_GPIO) {
|
||||||
char stemp[80];
|
export_gpio(audio_config_p->achan[ch].octrl[ot].ptt_gpio, audio_config_p->achan[ch].octrl[ot].ptt_invert, 1);
|
||||||
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);
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue