osd-contiki/platform/sensinode/dev/models.c

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2012-03-05 17:28:06 +01:00
/*
* Copyright (c) 2010, Loughborough University - 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.
*/
/**
* \file
* Model-specific functions for Sensinode devices.
*
* Bankable
*
* \author
* George Oikonomou - <oikonomou@users.sourceforge.net>
*/
#include "dev/models.h"
#include "dev/uart1.h"
#include "dev/m25p16.h"
/*---------------------------------------------------------------------------*/
void
model_init()
{
#ifdef MODEL_N740
/*
* We want to prevent the dongle from controlling the state of the
* analog switch on the N740s.
*
* Set P0_3 as out and start with P0_3=0 (USB and Light selected)
*/
P0DIR |= 0x08; /* P0_3 out */
P0_3 = 0;
/* Init the serial-parallel chip for N740s. This will also 'init' LEDs */
n740_ser_par_init();
/* Put the Serial Flash in Deep Power mode */
n740_analog_deactivate();
#if M25P16_CONF_ON
m25p16_dp();
#endif /* SERIAL_FLASH_CONF_ON */
n740_ser_par_set(0);
#endif
}
/*---------------------------------------------------------------------------*/
void
model_uart_intr_en()
{
#ifdef MODEL_N740
/*
* Dirty, ugly hack for the N740 USART1 RX issue:
* When the USB is for whatever reason disabled (either disconnected or the
* analog switch has switched to the D-connector), RX starts flowing down
* pin 1.7 (and the line stays low), resulting in non-stop UART1_RX
* interrupts. So, we only acknowledge the interrupt when the line is
* high and the dongle is connected (thus we are on USB).
*
* For all other models, just turn the interrupt on
*
* Interrupts will only turn on if UART_ONE_CONF_WITH_INPUT is defined 1
*/
if(P1_7 == 1 && P0_3 == 0) {
UART1_RX_INT(1);
}
#else
UART1_RX_INT(1);
#endif
}