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apps for raven LCD menu

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julienabeille 2008-10-14 09:45:17 +00:00
parent 4cfc98cb7b
commit 8a401ea9d9
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3
apps/raven-lcd-interface/Makefile.raven-lcd-interface Normal file
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raven-lcd-interface_src = raven-lcd.c

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apps/raven-lcd-interface/raven-lcd.c Normal file
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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.
*
* $Id: raven-lcd.c,v 1.1 2008/10/14 09:45:17 julienabeille Exp $
*/
/**
* \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 Blake Leverett <bleverett@gmail.com>
*
*/
/** \addtogroup raven
* @{
*/
/**
* \defgroup ravenserial Serial interface between Raven processors
* @{
*/
/**
* \file
* This file contains code to connect the two AVR Raven processors via a serial connection.
*
*/
#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "webserver-nogui.h"
#include "httpd-cgi.h"
#include "frame.h"
#include "mac.h"
#include "raven-lcd.h"
#include <string.h>
#include <stdio.h>
static u16_t addr[8];
static u8_t count = 0;
static u8_t seqno;
uip_ipaddr_t dest_addr;
#define cmd_len 8
static struct{
u8_t frame[cmd_len];
u8_t ndx;
u8_t len;
u8_t cmd;
u8_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])
#define PING6_DATALEN 16
#define CMD_PING 0x81
#define CMD_TEMP 0x80
#define SOF_CHAR 1
#define EOF_CHAR 4
void rs232_send(uint8_t port, unsigned char c);
/*---------------------------------------------------------------------------*/
/* Sends a ping packet out the radio */
static void
raven_ping6(void)
{
/* ping the router */
// Setup destination address.
struct uip_nd6_defrouter *defrouter;
uint8_t i,tmp;
defrouter = uip_nd6_choose_defrouter();
/* Get address from defrouter struct */
memcpy(addr, defrouter->nb->ipaddr.u8, 16);
/* Swap the bytes in the address array */
for (i=0;i<8;i++)
{
tmp = addr[i] & 0xff;
addr[i] >>= 8;
addr[i] |= tmp << 8;
}
uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
addr[3],addr[4],addr[5],addr[6],addr[7]);
UIP_IP_BUF->vtc = 0x60;
UIP_IP_BUF->tcflow = 1;
UIP_IP_BUF->flow = 0;
UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
UIP_IP_BUF->ttl = uip_netif_physical_if.cur_hop_limit;
uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &dest_addr);
uip_netif_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);
/* put one byte of data */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
count, PING6_DATALEN);
uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN + PING6_DATALEN;
UIP_IP_BUF->len[0] = (u8_t)((uip_len - 40) >> 8);
UIP_IP_BUF->len[1] = (u8_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 u8_t
raven_gui_loop(process_event_t ev, process_data_t data)
{
switch (ev){
case ICMP6_ECHO_REQUEST:
/* We have received a ping request over the air. Send frame back to 3290 */
send_frame(PING_REQUEST, 0, 0);
break;
case ICMP6_ECHO_REPLY:
/* We have received a ping reply over the air. Send frame back to 3290 */
send_frame(PING_REPLY, 1, &seqno);
break;
case SERIAL_CMD:
/* Check for command from serial port, execute it. */
if (cmd.done){
/* Execute the waiting command */
switch (cmd.cmd){
case CMD_PING:
/* Send ping request over the air */
seqno = cmd.frame[0];
raven_ping6();
break;
case CMD_TEMP:
/* Set temperature string in web server */
web_set_temp((char *)cmd.frame);
break;
default:
break;
}
/* Reset command done flag. */
cmd.done = false;
}
break;
default:
break;
}
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 = false;
if (ch != 0x01){
return;
}
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 = true;
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)
{
u8_t error;
PROCESS_BEGIN();
if((error = icmp6_new(NULL)) == 0) {
while(1) {
PROCESS_YIELD();
raven_gui_loop(ev, data);
}
}
PROCESS_END();
}
/** @} */
/** @} */

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apps/raven-lcd-interface/raven-lcd.h Normal file
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#ifndef raven_lcd_h
#define raven_lcd_h
int raven_lcd_serial_input(unsigned char ch);
PROCESS_NAME(raven_lcd_process);
/* Events for the Raven LCD processing loop */
#define PING_REQUEST 0xc1
#define PING_REPLY 0xc0
#define SERIAL_CMD 0x1
#endif