int main(void)
{
usbg_state *s;
usbg_gadget *g;
usbg_config *c;
usbg_function *f_acm0, *f_acm1, *f_ecm;
int ret = -EINVAL;
int usbg_ret;
usbg_gadget_attrs g_attrs = {
.bcdUSB = 0x0200,
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 64, /* Max allowed ep0 packet size */
.idVendor = VENDOR,
.idProduct = PRODUCT,
.bcdDevice = 0x0001, /* Verson of device */
};
usbg_gadget_strs g_strs = {
.str_ser = "0123456789", /* Serial number */
.str_mnf = "Foo Inc.", /* Manufacturer */
.str_prd = "Bar Gadget" /* Product string */
};
usbg_config_strs c_strs = {
.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");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out1;
}
usbg_ret = usbg_create_gadget(s, "g1", &g_attrs, &g_strs, &g);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on create gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, F_ACM, "usb0", NULL, &f_acm0);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating acm0 function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, F_ACM, "usb1", NULL, &f_acm1);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating acm1 function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, F_ECM, "usb0", NULL, &f_ecm);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating ecm function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
/* NULL can be passed to use kernel defaults */
usbg_ret = usbg_create_config(g, 1, "The only one", NULL, &c_strs, &c);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating config\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "acm.GS0", f_acm0);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding acm.GS0\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "acm.GS1", f_acm1);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding acm.GS1\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "ecm.usb0", f_ecm);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding ecm.usb0\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_enable_gadget(g, DEFAULT_UDC);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error enabling gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
ret = 0;
out2:
usbg_cleanup(s);
out1:
return ret;
}
int main(void)
{
usbg_state *s;
usbg_gadget *g;
usbg_config *c;
usbg_function *f_ffs1, *f_ffs2;
int ret = -EINVAL;
int usbg_ret;
struct usbg_gadget_attrs g_attrs = {
.bcdUSB = 0x0200,
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 64, /* Max allowed ep0 packet size */
.idVendor = VENDOR,
.idProduct = PRODUCT,
.bcdDevice = 0x0001, /* Verson of device */
};
struct usbg_gadget_strs g_strs = {
.serial = "0123456789", /* Serial number */
.manufacturer = "Foo Inc.", /* Manufacturer */
.product = "Bar Gadget" /* Product string */
};
struct usbg_config_strs c_strs = {
.configuration = "2xFFS"
};
usbg_ret = usbg_init("/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on USB gadget init\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out1;
}
usbg_ret = usbg_create_gadget(s, "g1", &g_attrs, &g_strs, &g);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on create gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, USBG_F_FFS, "my_dev_name", NULL, &f_ffs1);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating ffs1 function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, USBG_F_FFS, "my_other_dev_name",
NULL, &f_ffs2);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating ffs2 function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
/* NULL can be passed to use kernel defaults */
usbg_ret = usbg_create_config(g, 1, "The only one", NULL, &c_strs, &c);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating config\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "some_name_here", f_ffs1);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding ffs1\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "some_name_here_too", f_ffs2);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding ffs2\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
fprintf(stdout, "2xFFS gadget has been created.\n"
"Enable it after preparing your functions.\n");
/*
* Here we end up with two created ffs instances but they are not
* fully operational. Now we have to do step by step:
* 1) Mount both instances:
* $ mount my_dev_name -t functionfs /path/to/mount/dir1
* $ mount my_awesome_dev_name -t functionfs /path/to/mount/dir2
*
* 2) Run ffs daemons for both instances:
* $ my-ffs-daemon /path/to/mount/dir1
* $ my-ffs-daemon /path/to/mount/dir2
*
* 3) Enable your gadget:
* $ echo "my_udc_name" > /sys/kernel/config/usb_gadget/g1/UDC
*/
ret = 0;
out2:
usbg_cleanup(s);
out1:
return ret;
}
int main(void)
{
usbg_state *s;
usbg_gadget *g;
usbg_config *c;
usbg_function *f_acm0, *f_acm1, *f_ecm;
int ret = -EINVAL;
int usbg_ret;
usbg_gadget_attrs g_attrs = {
0x0200, /* bcdUSB */
0x00, /* Defined at interface level */
0x00, /* subclass */
0x00, /* device protocol */
0x0040, /* Max allowed packet size */
VENDOR,
PRODUCT,
0x0001, /* Verson of device */
};
usbg_gadget_strs g_strs = {
"0123456789", /* Serial number */
"Foo Inc.", /* Manufacturer */
"Bar Gadget" /* Product string */
};
usbg_config_strs c_strs = {
"CDC 2xACM+ECM"
};
usbg_ret = usbg_init("/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on USB gadget init\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out1;
}
usbg_ret = usbg_create_gadget(s, "g1", &g_attrs, &g_strs, &g);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on create gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, F_ACM, "usb0", NULL, &f_acm0);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating acm0 function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, F_ACM, "usb1", NULL, &f_acm1);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating acm1 function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_create_function(g, F_ECM, "usb0", NULL, &f_ecm);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating ecm function\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
/* NULL can be passed to use kernel defaults */
usbg_ret = usbg_create_config(g, 1, "The only one", NULL, &c_strs, &c);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error creating config\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "acm.GS0", f_acm0);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding acm.GS0\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "acm.GS1", f_acm1);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding acm.GS1\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_add_config_function(c, "ecm.usb0", f_ecm);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error adding ecm.usb0\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
usbg_ret = usbg_enable_gadget(g, DEFAULT_UDC);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error enabling gadget\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
goto out2;
}
ret = 0;
out2:
usbg_cleanup(s);
out1:
return ret;
}
