This is an example of how to learn about UDCs available in system and find out what gadget are enabled on them.
#include <errno.h>
#include <stdio.h>
#include <sys/sysmacros.h>
int main(void)
{
int usbg_ret;
int ret = -EINVAL;
const char *udc_name, *gadget_name;
usbg_ret =
usbg_init(
"/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on USB state init\n");
goto out;
}
if (g)
else
gadget_name = "";
fprintf(stdout, "%s <-> %s\n", udc_name, gadget_name);
}
ret = 0;
out:
return ret;
}
const char * usbg_strerror(usbg_error e)
Get the short description of error.
Definition usbg_error.c:123
const char * usbg_get_udc_name(usbg_udc *u)
Get name of udc.
Definition usbg.c:1598
#define usbg_for_each_udc(u, s)
Definition usbg.h:1127
int usbg_init(const char *configfs_path, usbg_state **state)
Initialize the libusbgx library state.
Definition usbg.c:1091
const char * usbg_get_gadget_name(usbg_gadget *g)
Get gadget name.
Definition usbg.c:1585
void usbg_cleanup(usbg_state *s)
Clean up the libusbgx library state.
Definition usbg.c:1136
usbg_gadget * usbg_get_udc_gadget(usbg_udc *u)
Get gadget which is attached to this UDC.
Definition usbg.c:1678
const char * usbg_error_name(usbg_error e)
Get the error name as a constant string.
Definition usbg_error.c:62
Definition usbg_internal.h:103
Definition usbg_internal.h:93
Definition usbg_internal.h:153