/******************************************************************************
Copyright 2009, Freie Universitaet Berlin (FUB). All rights reserved.

These sources were developed at the Freie Universitaet Berlin, Computer Systems
and Telematics group (http://cst.mi.fu-berlin.de).
-------------------------------------------------------------------------------
This file is part of FeuerWare.

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 3 of the License, or (at your option) any later
version.

FeuerWare 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, see http://www.gnu.org/licenses/ .
--------------------------------------------------------------------------------
For further information and questions please use the web site
	http://scatterweb.mi.fu-berlin.de
and the mailinglist (subscription via web site)
	scatterweb@lists.spline.inf.fu-berlin.de
*******************************************************************************/

#ifndef SHT11BOARD_H_
#define SHT11BOARD_H_

/**
 * @ingroup		lpc2387
 * @{
 */

/**
 * @file
 * @brief		LPC2387 SHT11 Device Driver
 *
 * @author      Freie Universität Berlin, Computer Systems & Telematics, FeuerWhere project
 * @version     $Revision$
 *
 * @note		$Id$
 */

#include <lpc23xx.h>
#include <board.h>

#define SHT11_SCK_LOW	FIO1CLR = BIT25;	// serial clock line low
#define SHT11_SCK_HIGH	FIO1SET = BIT25;    // serial clock line high
#define SHT11_DATA		((FIO1PIN & BIT26) != 0)				// read serial I/O
#define SHT11_DATA_LOW	(FIO1CLR = BIT26); 	// serial I/O line low
#define SHT11_DATA_HIGH	(FIO1SET = BIT26);  // serial I/O line high
#define SHT11_DATA_IN	(FIO1DIR &= ~BIT26)						// serial I/O as input
#define SHT11_DATA_OUT	(FIO1DIR |= BIT26)						// serial I/O as output
#define SHT11_INIT		FIO1DIR |= BIT25; PINSEL3 &= ~(BIT14|BIT15 | BIT16|BIT17);

/* time to wait after toggling the data line */
#define SHT11_DATA_WAIT     (50)
/* time to wait after toggling the clock line */
#define SHT11_CLK_WAIT      (10)

/** @} */
#endif /* SHT11BOARD_H_ */