nes-proj/arch/platform/native/platform.c

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/*
* Copyright (c) 2002, Adam Dunkels.
* 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 Contiki OS
*
*/
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/**
* \ingroup platform
*
* \defgroup native_platform Native platform
*
* Platform running in the host (Windows or Linux) environment.
*
* Used mainly for development and debugging.
* @{
*/
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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#include <errno.h>
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#ifdef __CYGWIN__
#include "net/wpcap-drv.h"
#endif /* __CYGWIN__ */
#include "contiki.h"
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#include "net/netstack.h"
#include "dev/serial-line.h"
#include "dev/button-hal.h"
#include "dev/gpio-hal.h"
#include "dev/leds.h"
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#include "net/ipv6/uip.h"
#include "net/ipv6/uip-debug.h"
#include "net/queuebuf.h"
#if NETSTACK_CONF_WITH_IPV6
#include "net/ipv6/uip-ds6.h"
#endif /* NETSTACK_CONF_WITH_IPV6 */
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/* Log configuration */
#include "sys/log.h"
#define LOG_MODULE "Native"
#define LOG_LEVEL LOG_LEVEL_MAIN
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/*---------------------------------------------------------------------------*/
/**
* \name Native Platform Configuration
*
* @{
*/
/*
* Defines the maximum number of file descriptors monitored by the platform
* main loop.
*/
#ifdef SELECT_CONF_MAX
#define SELECT_MAX SELECT_CONF_MAX
#else
#define SELECT_MAX 8
#endif
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/*
* Defines the timeout (in msec) of the select operation if no monitored file
* descriptors becomes ready.
*/
#ifdef SELECT_CONF_TIMEOUT
#define SELECT_TIMEOUT SELECT_CONF_TIMEOUT
#else
#define SELECT_TIMEOUT 1000
#endif
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/*
* Adds the STDIN file descriptor to the list of monitored file descriptors.
*/
#ifdef SELECT_CONF_STDIN
#define SELECT_STDIN SELECT_CONF_STDIN
#else
#define SELECT_STDIN 1
#endif
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/** @} */
/*---------------------------------------------------------------------------*/
static const struct select_callback *select_callback[SELECT_MAX];
static int select_max = 0;
#ifdef PLATFORM_CONF_MAC_ADDR
static uint8_t mac_addr[] = PLATFORM_CONF_MAC_ADDR;
#else /* PLATFORM_CONF_MAC_ADDR */
static uint8_t mac_addr[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
#endif /* PLATFORM_CONF_MAC_ADDR */
/*---------------------------------------------------------------------------*/
int
select_set_callback(int fd, const struct select_callback *callback)
{
int i;
if(fd >= 0 && fd < SELECT_MAX) {
/* Check that the callback functions are set */
if(callback != NULL &&
(callback->set_fd == NULL || callback->handle_fd == NULL)) {
callback = NULL;
}
select_callback[fd] = callback;
/* Update fd max */
if(callback != NULL) {
if(fd > select_max) {
select_max = fd;
}
} else {
select_max = 0;
for(i = SELECT_MAX - 1; i > 0; i--) {
if(select_callback[i] != NULL) {
select_max = i;
break;
}
}
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
#if SELECT_STDIN
static int
stdin_set_fd(fd_set *rset, fd_set *wset)
{
FD_SET(STDIN_FILENO, rset);
return 1;
}
static void
stdin_handle_fd(fd_set *rset, fd_set *wset)
{
char c;
if(FD_ISSET(STDIN_FILENO, rset)) {
if(read(STDIN_FILENO, &c, 1) > 0) {
serial_line_input_byte(c);
}
}
}
const static struct select_callback stdin_fd = {
stdin_set_fd, stdin_handle_fd
};
#endif /* SELECT_STDIN */
/*---------------------------------------------------------------------------*/
static void
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set_lladdr(void)
{
linkaddr_t addr;
memset(&addr, 0, sizeof(linkaddr_t));
#if NETSTACK_CONF_WITH_IPV6
memcpy(addr.u8, mac_addr, sizeof(addr.u8));
#else
int i;
for(i = 0; i < sizeof(linkaddr_t); ++i) {
addr.u8[i] = mac_addr[7 - i];
}
#endif
linkaddr_set_node_addr(&addr);
}
/*---------------------------------------------------------------------------*/
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#if NETSTACK_CONF_WITH_IPV6
static void
set_global_address(void)
{
static uip_ipaddr_t ipaddr;
static uip_ipaddr_t *prefix = NULL;
/* Assign a unique local address (RFC4193,
http://tools.ietf.org/html/rfc4193). */
if(prefix == NULL) {
uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 0);
} else {
memcpy(&ipaddr, prefix, 8);
}
/* Assumes that the uip_lladdr is set */
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
LOG_INFO("Added global IPv6 address ");
LOG_INFO_6ADDR(&ipaddr);
LOG_INFO_("\n");
/* set the PREFIX::1 address to the IF */
uip_ip6addr(&ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 1);
uip_ds6_defrt_add(&ipaddr, 0);
}
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#endif
/*---------------------------------------------------------------------------*/
int contiki_argc = 0;
char **contiki_argv;
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/*---------------------------------------------------------------------------*/
void
platform_process_args(int argc, char**argv)
{
/* crappy way of remembering and accessing argc/v */
contiki_argc = argc;
contiki_argv = argv;
/* native under windows is hardcoded to use the first one or two args */
/* for wpcap configuration so this needs to be "removed" from */
/* contiki_args (used by the native-border-router) */
#ifdef __CYGWIN__
contiki_argc--;
contiki_argv++;
#ifdef UIP_FALLBACK_INTERFACE
contiki_argc--;
contiki_argv++;
#endif
#endif
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}
/*---------------------------------------------------------------------------*/
void
platform_init_stage_one()
{
gpio_hal_init();
button_hal_init();
leds_init();
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return;
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}
/*---------------------------------------------------------------------------*/
void
platform_init_stage_two()
{
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set_lladdr();
serial_line_init();
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}
/*---------------------------------------------------------------------------*/
void
platform_init_stage_three()
{
#if NETSTACK_CONF_WITH_IPV6
#ifdef __CYGWIN__
process_start(&wpcap_process, NULL);
#endif
set_global_address();
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#endif /* NETSTACK_CONF_WITH_IPV6 */
/* Make standard output unbuffered. */
setvbuf(stdout, (char *)NULL, _IONBF, 0);
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}
/*---------------------------------------------------------------------------*/
void
platform_main_loop()
{
#if SELECT_STDIN
select_set_callback(STDIN_FILENO, &stdin_fd);
#endif /* SELECT_STDIN */
while(1) {
fd_set fdr;
fd_set fdw;
int maxfd;
int i;
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int retval;
struct timeval tv;
retval = process_run();
tv.tv_sec = 0;
tv.tv_usec = retval ? 1 : SELECT_TIMEOUT;
FD_ZERO(&fdr);
FD_ZERO(&fdw);
maxfd = 0;
for(i = 0; i <= select_max; i++) {
if(select_callback[i] != NULL && select_callback[i]->set_fd(&fdr, &fdw)) {
maxfd = i;
}
}
retval = select(maxfd + 1, &fdr, &fdw, NULL, &tv);
if(retval < 0) {
if(errno != EINTR) {
perror("select");
}
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} else if(retval > 0) {
/* timeout => retval == 0 */
for(i = 0; i <= maxfd; i++) {
if(select_callback[i] != NULL) {
select_callback[i]->handle_fd(&fdr, &fdw);
}
}
}
etimer_request_poll();
}
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return;
}
/*---------------------------------------------------------------------------*/
void
log_message(char *m1, char *m2)
{
fprintf(stderr, "%s%s\n", m1, m2);
}
/*---------------------------------------------------------------------------*/
void
uip_log(char *m)
{
fprintf(stderr, "%s\n", m);
}
/*---------------------------------------------------------------------------*/
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/** @} */