u-boot/include/tws.h
Detlev Zundel 572e6179ad drivers/twserial: Add protocol driver for "three wire serial" interface.
This pretty unintelligent interface is used on some RTC chips.

Signed-off-by: Detlev Zundel <dzu@denx.de>
2009-03-30 09:38:36 +02:00

39 lines
1.2 KiB
C

/*
* (C) Copyright 2009
* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
#ifndef _TWS_H_
#define _TWS_H_
/*
* Read/Write interface:
* buffer: Where to read/write the data
* len: How many bits to read/write
*
* Returns: 0 on success, not 0 on failure
*/
int tws_read(uchar *buffer, int len);
int tws_write(uchar *buffer, int len);
#endif /* _TWS_H_ */