102 řádky
2.3 KiB
C
102 řádky
2.3 KiB
C
/* Copyright (c) 2011,2012 Simon Schubert <2@0x2c.org>.
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* Modifications by Jacob Alexander 2014-2015 <haata@kiibohd.com>
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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 3 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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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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/**
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* Internal driver structures
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*/
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/**
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* USB state machine
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* =================
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*
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* Device configuration states:
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*
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* Attached <-> Powered
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* Powered -(reset)-> Default
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* Default -(SET_ADDRESS)-> Address
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* Address -(SET_CONFIGURATION)-> Configured
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* Configured -(SET_CONFIGURATION 0)-> Address
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* Address -(SET_ADDRESS 0)-> Default
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* [Default, Configured, Address] -(reset)-> Default
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*/
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// ----- Defines -----
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#ifndef USB_MAX_EP
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#define USB_MAX_EP 16
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#endif
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// ----- Structs -----
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struct usbd_ep_pipe_state_t {
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enum usb_ep_pingpong pingpong; /* next desc to use */
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enum usb_data01 data01;
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size_t transfer_size;
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size_t pos;
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uint8_t *data_buf;
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const uint8_t *copy_source;
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int short_transfer;
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ep_callback_t callback;
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void *callback_data;
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size_t ep_maxsize;
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/* constant */
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int ep_num;
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enum usb_ep_dir ep_dir;
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};
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struct usbd_ep_state_t {
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union {
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struct usbd_ep_pipe_state_t pipe[2];
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struct {
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struct usbd_ep_pipe_state_t rx;
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struct usbd_ep_pipe_state_t tx;
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};
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};
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};
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struct usbd_t {
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struct usbd_function_ctx_header functions;
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struct usbd_function control_function;
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const struct usbd_device *identity;
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int address;
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int config;
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enum usbd_dev_state {
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USBD_STATE_DISABLED = 0,
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USBD_STATE_DEFAULT,
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USBD_STATE_SETTING_ADDRESS,
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USBD_STATE_ADDRESS,
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USBD_STATE_CONFIGURED
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} state;
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enum usb_ctrl_req_dir ctrl_dir;
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struct usbd_ep_state_t ep_state[USB_MAX_EP];
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};
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extern struct usbd_t usb;
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// ----- Functions -----
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void usb_restart(void);
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void usb_enable(void);
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const struct usbd_config *usb_get_config_data(int config);
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