diff options
Diffstat (limited to 'examples/gadget-hid.c')
| -rw-r--r-- | examples/gadget-hid.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/examples/gadget-hid.c b/examples/gadget-hid.c new file mode 100644 index 0000000..52ced2c --- /dev/null +++ b/examples/gadget-hid.c @@ -0,0 +1,153 @@ +/* + * Copyright (C) 2014 Samsung Electronics + * + * Krzysztof Opasiak <k.opasiak@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <errno.h> +#include <stdio.h> +#include <linux/usb/ch9.h> +#include <usbg/usbg.h> +#include <usbg/function/hid.h> + +#define VENDOR 0x1d6b +#define PRODUCT 0x0104 + +static char report_desc[] = { + 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ + 0x09, 0x06, /* USAGE (Keyboard) */ + 0xa1, 0x01, /* COLLECTION (Application) */ + 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ + 0x19, 0xe0, /* USAGE_MINIMUM (Keyboard LeftControl) */ + 0x29, 0xe7, /* USAGE_MAXIMUM (Keyboard Right GUI) */ + 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ + 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ + 0x75, 0x01, /* REPORT_SIZE (1) */ + 0x95, 0x08, /* REPORT_COUNT (8) */ + 0x81, 0x02, /* INPUT (Data,Var,Abs) */ + 0x95, 0x01, /* REPORT_COUNT (1) */ + 0x75, 0x08, /* REPORT_SIZE (8) */ + 0x81, 0x03, /* INPUT (Cnst,Var,Abs) */ + 0x95, 0x05, /* REPORT_COUNT (5) */ + 0x75, 0x01, /* REPORT_SIZE (1) */ + 0x05, 0x08, /* USAGE_PAGE (LEDs) */ + 0x19, 0x01, /* USAGE_MINIMUM (Num Lock) */ + 0x29, 0x05, /* USAGE_MAXIMUM (Kana) */ + 0x91, 0x02, /* OUTPUT (Data,Var,Abs) */ + 0x95, 0x01, /* REPORT_COUNT (1) */ + 0x75, 0x03, /* REPORT_SIZE (3) */ + 0x91, 0x03, /* OUTPUT (Cnst,Var,Abs) */ + 0x95, 0x06, /* REPORT_COUNT (6) */ + 0x75, 0x08, /* REPORT_SIZE (8) */ + 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ + 0x25, 0x65, /* LOGICAL_MAXIMUM (101) */ + 0x05, 0x07, /* USAGE_PAGE (Keyboard) */ + 0x19, 0x00, /* USAGE_MINIMUM (Reserved) */ + 0x29, 0x65, /* USAGE_MAXIMUM (Keyboard Application) */ + 0x81, 0x00, /* INPUT (Data,Ary,Abs) */ + 0xc0 /* END_COLLECTION */ +}; + +int main() { + usbg_state *s; + usbg_gadget *g; + usbg_config *c; + usbg_function *f_hid; + 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 = "1xHID" + }; + + struct usbg_f_hid_attrs f_attrs = { + .protocol = 1, + .report_desc = { + .desc = report_desc, + .len = sizeof(report_desc), + }, + .report_length = 8, + .subclass = 0, + }; + + usbg_ret = usbg_init("/sys/kernel/config", &s); + if (usbg_ret != USBG_SUCCESS) { + fprintf(stderr, "Error on usbg 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 creating 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_HID, "usb0", &f_attrs, &f_hid); + if (usbg_ret != USBG_SUCCESS) { + fprintf(stderr, "Error creating function\n"); + fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret), + usbg_strerror(usbg_ret)); + goto out2; + } + + 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", f_hid); + if (usbg_ret != USBG_SUCCESS) { + fprintf(stderr, "Error adding function\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; +} |