contiki/platform/avr-raven/apps/raven-ipso/raven-ipso.c

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/* Copyright (c) 2008, Swedish Institute of Computer Science
* All rights reserved.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*
*/
/** \addtogroup raven
* @{
*/
/**
* \defgroup ravenserial Serial interface between Raven processors
*
* \brief This module contains code to interface a Contiki-based
* project on the AVR Raven platform's ATMega1284P chip to the LCD
* driver chip (ATMega3290P) on the Raven.
*
* \author Durvy Mathilde <mdurvy@cisco.com>
*
* @{
*/
/**
* \file
* This file contains code to connect the two AVR Raven processors via
* a serial connection for the IPSO interop application
*
*/
#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "mac.h"
#include "raven-lcd.h"
#include <string.h>
#include <stdio.h>
#define cmd_len 8
#define data_len 20
static uint8_t seqno;
uip_ipaddr_t ping_addr;
uip_ipaddr_t udp_addr;
static struct uip_udp_conn *udp_conn;
char udp_data[data_len];
static struct{
uint8_t frame[cmd_len];
uint8_t ndx;
uint8_t len;
uint8_t cmd;
uint8_t done;
} cmd;
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
void rs232_send(uint8_t port, unsigned char c);
/*------------------------------------------------------------------*/
/* Sends a ping packet out the radio */
void
raven_ping6(void)
{
/* ping ipv6.google.com*/
uip_ip6addr(&ping_addr,0x2001,0x420,0x5FFF,0x7D,0x2D0,0xB7FF,0xFE23,0xE6DB);
//uip_ip6addr(&ping_addr, 0x2001, 0x4860, 0, 0x2001, 0, 0, 0, 0x68);
//uip_ip6addr(&ping_addr, 0xaaaa, 0, 0, 0, 0, 0, 0, 1);
UIP_IP_BUF->vtc = 0x60;
UIP_IP_BUF->tcflow = 1;
UIP_IP_BUF->flow = 0;
UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
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//UIP_IP_BUF->ttl = uip_netif_physical_if.cur_hop_limit;
UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &ping_addr);
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//uip_netif_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
UIP_ICMP_BUF->icode = 0;
/* set identifier and sequence number to 0 */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN;
UIP_IP_BUF->len[0] = (uint8_t)((uip_len - 40) >> 8);
UIP_IP_BUF->len[1] = (uint8_t)((uip_len - 40) & 0x00FF);
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
tcpip_ipv6_output();
}
/*------------------------------------------------------------------*/
/* Send a serial command frame to the ATMega3290 Processsor on Raven
via serial port */
static void
send_frame(uint8_t cmd, uint8_t len, uint8_t *payload)
{
uint8_t i;
rs232_send(0, SOF_CHAR); /* Start of Frame */
rs232_send(0, len);
rs232_send(0, cmd);
for (i=0;i<len;i++)
rs232_send(0,*payload++);
rs232_send(0, EOF_CHAR);
}
/*------------------------------------------------------------------*/
static uint8_t
raven_gui_loop(process_event_t ev, process_data_t data)
{
if(ev == tcpip_icmp6_event) {
switch(*((uint8_t *)data)){
case ICMP6_ECHO_REQUEST:
/* We have received a ping request over the air. Tell 3290 */
send_frame(REPORT_PING_BEEP, 0, 0);
break;
case ICMP6_ECHO_REPLY:
/* We have received a ping reply over the air. Pass seqno to 3290 */
send_frame(REPORT_PING, 1, &seqno);
break;
}
} else {
switch(ev){
case SERIAL_CMD:
/* Check for command from serial port, execute it. */
if (cmd.done){
/* Execute the waiting command */
switch (cmd.cmd){
case SEND_PING:
/* Send ping request over the air */
seqno = cmd.frame[0];
raven_ping6();
break;
case SEND_TEMP:
/* Set temperature string in web server */
sprintf(udp_data, "T%s\r\n", (char *)cmd.frame);
uip_udp_packet_send(udp_conn, udp_data, data_len);
break;
default:
break;
}
/* Reset command done flag. */
cmd.done = 0;
}
break;
default:
break;
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}
}
return 0;
}
/*--------------------------------------------------------------------*/
/* Process an input character from serial port.
* ** This is called from an ISR!!
*/
int raven_lcd_serial_input(unsigned char ch)
{
/* Parse frame, */
switch (cmd.ndx){
case 0:
/* first byte, must be 0x01 */
cmd.done = 0;
if (ch != 0x01){
return 0;
}
break;
case 1:
/* Second byte, length of payload */
cmd.len = ch;
break;
case 2:
/* Third byte, command byte */
cmd.cmd = ch;
break;
default:
/* Payload and ETX */
if (cmd.ndx >= cmd.len+3){
/* all done, check ETX */
if (ch == 0x04){
cmd.done = 1;
process_post(&raven_lcd_process, SERIAL_CMD, 0);
} else {
/* Failed ETX */
cmd.ndx = 0;
}
} else {
/* Just grab and store payload */
cmd.frame[cmd.ndx - 3] = ch;
}
break;
}
cmd.ndx++;
return 0;
}
/*---------------------------------------------------------------------------*/
PROCESS(raven_lcd_process, "Raven LCD interface process");
PROCESS_THREAD(raven_lcd_process, ev, data)
{
uint8_t error;
PROCESS_BEGIN();
/*Create a udp connection to the IPSOserver*/
//swisscom uip_ip6addr(&udp_addr,0x2001,918,0xfff9,0,0,0,0,1);
//HE uip_ip6addr(&udp_addr,0x2001,0x470,0x1f12,0x5ec,0x12,0x13ff,0xfe14,0x1516);
uip_ip6addr(&udp_addr,0x2001,0x420,0x5FFF,0x7D,0x2D0,0xB7FF,0xFE23,0xE6DB);
/* set destination parameters*/
udp_conn = udp_new(&udp_addr, UIP_HTONS(0xF0B0), NULL);
/*set local port */
udp_bind(udp_conn, UIP_HTONS(0xF0B0+1));
if((error = icmp6_new(NULL)) == 0) {
while(1) {
PROCESS_YIELD();
raven_gui_loop(ev, data);
}
}
PROCESS_END();
}
/** @} */
/** @} */