nes-proj/platform/esb/dev/ctsrts-sensor.h

62 lines
2.4 KiB
C

/*
* Copyright (c) 2005, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* RTS/CTS (Request to Send/Clear to Send) are the signals used for hardware
* flow control. By setting the RTS line to "ON" the host tells the connected
* device that it is ready to receive data. Hardware flow control is not
* implemented yet. This implementation is just so some application can use
* the pins, it would also be possible for rs232.c to use it for hardware
* handshake but that is not implemented yet.
*/
#ifndef __CTSRTS_SENSOR_H__
#define __CTSRTS_SENSOR_H__
#include "lib/sensors.h"
extern const struct sensors_sensor ctsrts_sensor;
#define CTSRTS_SENSOR "CTSRTS"
/**
* Indicate to host/client we are NOT ready to receive data. Sets the RTS pin
* to low.
*/
void ctsrts_rts_clear(void);
/**
* Request host/client to send data. Sets the RTS pin to high.
*/
void ctsrts_rts_set(void);
#endif /* __CTSRTS_SENSOR_H__ */