mirror of
https://github.com/linux-usb-gadgets/libusbgx.git
synced 2025-07-19 15:55:05 +03:00
709c04fab9
Each usbg_set_config_*() may fail so it should have a return value to notify user about reason of failure. To be consistent with rest of API usbg_create_config() should also return error code to notify user about reasons of failure instead of binary information (NULL or not). Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> [Port from libusbg and update description] Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/*
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* Copyright (C) 2013 Linaro Limited
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*
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* Matt Porter <mporter@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <usbg/usbg.h>
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/**
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* @file gadget-acm-ecm.c
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* @example gadget-acm-ecm.c
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* This is an example of how to create an ACM+ECM gadget device.
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*/
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#define VENDOR 0x1d6b
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#define PRODUCT 0x0104
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int main(void)
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{
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usbg_state *s;
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usbg_gadget *g;
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usbg_config *c;
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usbg_function *f_acm0, *f_acm1, *f_ecm;
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int ret = -EINVAL;
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int usbg_ret;
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usbg_gadget_attrs g_attrs = {
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0x0200, /* bcdUSB */
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0x00, /* Defined at interface level */
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0x00, /* subclass */
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0x00, /* device protocol */
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0x0040, /* Max allowed packet size */
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VENDOR,
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PRODUCT,
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0x0001, /* Verson of device */
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};
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usbg_gadget_strs g_strs = {
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"0123456789", /* Serial number */
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"Foo Inc.", /* Manufacturer */
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"Bar Gadget" /* Product string */
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};
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usbg_config_strs c_strs = {
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"CDC 2xACM+ECM"
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};
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usbg_ret = usbg_init("/sys/kernel/config", &s);
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if (usbg_ret != USBG_SUCCESS) {
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fprintf(stderr, "Error on USB gadget init\n");
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goto out1;
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}
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usbg_ret = usbg_create_gadget(s, "g1", &g_attrs, &g_strs, &g);
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if (usbg_ret != USBG_SUCCESS) {
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fprintf(stderr, "Error on create gadget\n");
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goto out2;
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}
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usbg_ret = usbg_create_function(g, F_ACM, "usb0", NULL, &f_acm0);
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if (usbg_ret != USBG_SUCCESS) {
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fprintf(stderr, "Error creating acm0 function\n");
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goto out2;
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}
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usbg_ret = usbg_create_function(g, F_ACM, "usb1", NULL, &f_acm1);
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if (usbg_ret != USBG_SUCCESS) {
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fprintf(stderr, "Error creating acm1 function\n");
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goto out2;
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}
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usbg_ret = usbg_create_function(g, F_ECM, "usb0", NULL, &f_acm1);
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if (usbg_ret != USBG_SUCCESS) {
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fprintf(stderr, "Error creating ecm function\n");
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goto out2;
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}
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usbg_ret = usbg_create_config(g, "c.1", NULL /* use defaults */, &c_strs, &c);
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if (usbg_ret != USBG_SUCCESS) {
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fprintf(stderr, "Error creating config\n");
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goto out2;
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}
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usbg_add_config_function(c, "acm.GS0", f_acm0);
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usbg_add_config_function(c, "acm.GS1", f_acm1);
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usbg_add_config_function(c, "ecm.usb0", f_ecm);
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usbg_enable_gadget(g, DEFAULT_UDC);
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ret = 0;
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out2:
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usbg_cleanup(s);
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out1:
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return ret;
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}
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