This is an example of how to create an ACM+ECM gadget device.
#include <errno.h>
#include <stdio.h>
#include <sys/sysmacros.h>
#include <linux/usb/ch9.h>
#define VENDOR 0x1d6b
#define PRODUCT 0x0104
int main(void)
{
int ret = -EINVAL;
int usbg_ret;
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 64,
.idVendor = VENDOR,
.idProduct = PRODUCT,
.bcdDevice = 0x0001,
};
.manufacturer = "Foo Inc.",
.product = "Bar Gadget"
};
.
configuration =
"CDC 2xACM+ECM"
};
usbg_ret =
usbg_init(
"/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on USB gadget init\n");
goto out1;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on create gadget\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating acm0 function\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating acm1 function\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating ecm function\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating config\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding acm.GS0\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding acm.GS1\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding ecm.usb0\n");
goto out2;
}
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error enabling gadget\n");
goto out2;
}
ret = 0;
out2:
out1:
return ret;
}
int usbg_create_gadget(usbg_state *s, const char *name, const struct usbg_gadget_attrs *g_attrs, const struct usbg_gadget_strs *g_strs, usbg_gadget **g)
Create a new USB gadget device and set given attributes and strings.
Definition usbg.c:1532
const char * usbg_strerror(usbg_error e)
Get the short description of error.
Definition usbg_error.c:123
int usbg_add_config_function(usbg_config *c, const char *name, usbg_function *f)
Add a function to a configuration.
Definition usbg.c:2368
int usbg_create_config(usbg_gadget *g, int id, const char *label, const struct usbg_config_attrs *c_attrs, const struct usbg_config_strs *c_strs, usbg_config **c)
Create a new USB gadget configuration.
Definition usbg.c:2179
int usbg_enable_gadget(usbg_gadget *g, usbg_udc *udc)
Enable a USB gadget device.
Definition usbg.c:2548
int usbg_init(const char *configfs_path, usbg_state **state)
Initialize the libusbgx library state.
Definition usbg.c:1091
void usbg_cleanup(usbg_state *s)
Clean up the libusbgx library state.
Definition usbg.c:1136
int usbg_create_function(usbg_gadget *g, usbg_function_type type, const char *instance, void *f_attrs, usbg_function **f)
Create a new USB gadget function and set its attributes.
Definition usbg.c:2051
const char * usbg_error_name(usbg_error e)
Get the error name as a constant string.
Definition usbg_error.c:62
USB configuration strings.
Definition usbg.h:199
USB gadget device attributes.
Definition usbg.h:135
USB gadget device strings.
Definition usbg.h:158
Definition usbg_internal.h:117
Definition usbg_internal.h:129
Definition usbg_internal.h:103
Definition usbg_internal.h:93