2007-08-20 11:01:13 +00:00
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*
|
2009-04-08 14:56:00 +00:00
|
|
|
* @(#)$Id: rs232.c,v 1.8 2009/04/08 14:56:03 nvt-se Exp $
|
2007-08-20 11:01:13 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
/** \addtogroup esbrs232
|
|
|
|
* @{ */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* \file
|
|
|
|
* RS232 communication device driver for the MSP430.
|
|
|
|
* \author Adam Dunkels <adam@sics.se>
|
|
|
|
*
|
|
|
|
* This file contains an RS232 device driver for the MSP430 microcontroller.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <io.h>
|
|
|
|
#include <signal.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include "dev/msb430-uart1.h"
|
|
|
|
#include "rs232.h"
|
|
|
|
|
|
|
|
#ifndef U1IFG
|
|
|
|
#define U1IFG IFG2
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
|
|
* Initalize the RS232 port.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
rs232_init(void)
|
|
|
|
{
|
|
|
|
rs232_set_speed(RS232_115200);
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
2008-03-28 15:59:58 +00:00
|
|
|
int
|
|
|
|
putchar(int c)
|
|
|
|
{
|
2008-10-28 12:42:53 +00:00
|
|
|
if(uart_get_mode() == UART_MODE_RS232) {
|
2007-08-20 11:01:13 +00:00
|
|
|
/* Loop until the transmission buffer is available. */
|
|
|
|
UART_WAIT_TX();
|
|
|
|
/* Transmit the data. */
|
|
|
|
UART_TX = c;
|
2008-03-28 15:59:58 +00:00
|
|
|
return c;
|
|
|
|
} else {
|
|
|
|
return -1;
|
2007-08-20 11:01:13 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
void
|
2009-04-08 14:56:00 +00:00
|
|
|
rs232_send(char c)
|
|
|
|
{
|
|
|
|
/* Check if the UART is in RS232 mode before sending.
|
|
|
|
This check can be ommitted if every access to rs232 locks the uart
|
|
|
|
before using it.
|
|
|
|
*/
|
|
|
|
|
|
|
|
putchar(c);
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
void
|
2007-08-20 11:01:13 +00:00
|
|
|
rs232_set_speed(enum rs232_speed speed)
|
|
|
|
{
|
|
|
|
// baud
|
2008-09-19 12:18:04 +00:00
|
|
|
const unsigned char br_table[5][3] = {
|
2008-10-28 12:42:53 +00:00
|
|
|
{0x00, 0x01, 0x00}, // 9600
|
2007-08-20 11:01:13 +00:00
|
|
|
{0x80, 0x00, 0x00}, // 19200
|
|
|
|
{0x40, 0x00, 0x00}, // 38400
|
|
|
|
{0x2a, 0x00, 0x5b}, // 57600
|
|
|
|
{0x15, 0x00, 0x4a} // 115200
|
|
|
|
};
|
|
|
|
|
|
|
|
uart_set_speed(UART_MODE_RS232, br_table[speed][0],
|
|
|
|
br_table[speed][1], br_table[speed][2]);
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
void
|
|
|
|
rs232_print(char *cptr)
|
|
|
|
{
|
2008-10-28 12:42:53 +00:00
|
|
|
// lock UART for print operation
|
|
|
|
if (uart_lock(UART_MODE_RS232)) {
|
|
|
|
while(*cptr != 0) {
|
|
|
|
rs232_send(*cptr);
|
|
|
|
++cptr;
|
|
|
|
}
|
|
|
|
uart_unlock(UART_MODE_RS232);
|
2007-08-20 11:01:13 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
|
|
void
|
|
|
|
rs232_set_input(fp_uart_handler f)
|
|
|
|
{
|
|
|
|
uart_set_handler(UART_MODE_RS232, f);
|
|
|
|
}
|
|
|
|
/** @} */
|