142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2001-2004 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. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 lwIP TCP/IP stack.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is the interface to the platform specific serial IO module
|
||
|
|
* It needs to be implemented by those platforms which need SLIP or PPP
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __SIO_H__
|
||
|
|
#define __SIO_H__
|
||
|
|
|
||
|
|
#include "lwip/arch.h"
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* If you want to define sio_fd_t elsewhere or differently,
|
||
|
|
define this in your cc.h file. */
|
||
|
|
#ifndef __sio_fd_t_defined
|
||
|
|
typedef void * sio_fd_t;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* The following functions can be defined to something else in your cc.h file
|
||
|
|
or be implemented in your custom sio.c file. */
|
||
|
|
|
||
|
|
#ifndef sio_open
|
||
|
|
/**
|
||
|
|
* Opens a serial device for communication.
|
||
|
|
*
|
||
|
|
* @param devnum device number
|
||
|
|
* @return handle to serial device if successful, NULL otherwise
|
||
|
|
*/
|
||
|
|
sio_fd_t sio_open(u8_t devnum)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef sio_send
|
||
|
|
/**
|
||
|
|
* Sends a single character to the serial device.
|
||
|
|
*
|
||
|
|
* @param c character to send
|
||
|
|
* @param fd serial device handle
|
||
|
|
*
|
||
|
|
* @note This function will block until the character can be sent.
|
||
|
|
*/
|
||
|
|
void sio_send(u8_t c, sio_fd_t fd)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef sio_recv
|
||
|
|
/**
|
||
|
|
* Receives a single character from the serial device.
|
||
|
|
*
|
||
|
|
* @param fd serial device handle
|
||
|
|
*
|
||
|
|
* @note This function will block until a character is received.
|
||
|
|
*/
|
||
|
|
u8_t sio_recv(sio_fd_t fd)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef sio_read
|
||
|
|
/**
|
||
|
|
* Reads from the serial device.
|
||
|
|
*
|
||
|
|
* @param fd serial device handle
|
||
|
|
* @param data pointer to data buffer for receiving
|
||
|
|
* @param len maximum length (in bytes) of data to receive
|
||
|
|
* @return number of bytes actually received - may be 0 if aborted by sio_read_abort
|
||
|
|
*
|
||
|
|
* @note This function will block until data can be received. The blocking
|
||
|
|
* can be cancelled by calling sio_read_abort().
|
||
|
|
*/
|
||
|
|
u32_t sio_read(sio_fd_t fd, u8_t *data, u32_t len)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef sio_tryread
|
||
|
|
/**
|
||
|
|
* Tries to read from the serial device. Same as sio_read but returns
|
||
|
|
* immediately if no data is available and never blocks.
|
||
|
|
*
|
||
|
|
* @param fd serial device handle
|
||
|
|
* @param data pointer to data buffer for receiving
|
||
|
|
* @param len maximum length (in bytes) of data to receive
|
||
|
|
* @return number of bytes actually received
|
||
|
|
*/
|
||
|
|
u32_t sio_tryread(sio_fd_t fd, u8_t *data, u32_t len)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef sio_write
|
||
|
|
/**
|
||
|
|
* Writes to the serial device.
|
||
|
|
*
|
||
|
|
* @param fd serial device handle
|
||
|
|
* @param data pointer to data to send
|
||
|
|
* @param len length (in bytes) of data to send
|
||
|
|
* @return number of bytes actually sent
|
||
|
|
*
|
||
|
|
* @note This function will block until all data can be sent.
|
||
|
|
*/
|
||
|
|
u32_t sio_write(sio_fd_t fd, u8_t *data, u32_t len)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef sio_read_abort
|
||
|
|
/**
|
||
|
|
* Aborts a blocking sio_read() call.
|
||
|
|
*
|
||
|
|
* @param fd serial device handle
|
||
|
|
*/
|
||
|
|
void sio_read_abort(sio_fd_t fd)ICACHE_FLASH_ATTR;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __SIO_H__ */
|