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nxdumptool/source/usb.h
2020-05-07 23:48:22 -04:00

49 lines
2 KiB
C

/*
* Copyright (c) 2020 DarkMatterCore
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifndef __USB_H__
#define __USB_H__
#include <switch.h>
#define USB_TRANSFER_BUFFER_SIZE 0x800000 /* 8 MiB */
/// Initializes the USB interface, input and output endpoints and allocates an internal transfer buffer.
bool usbInitialize(void);
/// Closes the USB interface, input and output endpoints and frees the transfer buffer.
void usbExit(void);
/// Returns a pointer to a heap-allocated, page-aligned memory buffer that's suitable for USB transfers.
void *usbAllocatePageAlignedBuffer(size_t size);
/// Starts a data transfer session with the connected host device. Returns true if the host device replies with valid data within a certain time span.
/// This should be called before usbSendFileProperties().
bool usbStartSession(void);
/// Sends file properties to the host device before starting a file data transfer. Must be called before usbSendFileData(), and after usbStartSession().
bool usbSendFileProperties(u64 file_size, const char *filename);
/// Performs a file data transfer. Must be continuously called after usbSendFileProperties() until all file data has been transferred.
/// Data chunk size must not exceed USB_TRANSFER_BUFFER_SIZE.
bool usbSendFileData(void *data, u64 data_size);
/// Ends a previously started data transfer session with the connected host device.
void usbEndSession(void);
#endif /* __USB_H__ */