giomba
/
nes-proj
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
nes-proj/platform/sensinode/disco.c

351 lines
10 KiB
C
Raw Blame History

/*
* 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
* Disco server sources
* (embedded part of the DISCOBALL project)
*
* It objective is to receive a code file over UDP, store it in
* external flash and disseminate it to other nodes of the
* 6LoWPAN network.
*
* For this to work, the image must be co-hosted with the BooTTY!
* bootloader, which will move the image from external to internal
* flash.
*
* To link this application in your contiki image, all you need to
* do is to add this line:
* OFFSET_FIRMWARE=1
* to your project's makefile
*
* \author
* George Oikonomou - <oikonomou@users.sourceforge.net>
*/
#include "contiki.h"
#include "contiki-net.h"
#include "sys/clock.h"
#include "sys/ctimer.h"
#include "dev/watchdog.h"
#include "dev/n740.h"
#include "dev/m25p16.h"
#include "disco.h"
/*---------------------------------------------------------------------------*/
#define DEBUG DEBUG_NONE
#include "net/ip/uip-debug.h"
/*---------------------------------------------------------------------------*/
#if BATMON_CONF_ENABLED
void batmon_log(uint8_t trigger);
#define LOG_TRIGGER_OAP_DISCO_START 0x01
#define LOG_TRIGGER_OAP_DISCO_DONE 0x02
#define LOG_TRIGGER_OAP_DISCO_ABORT 0x03
#else
#define batmon_log(t) do { } while(0);
#endif
/*---------------------------------------------------------------------------*/
static struct uip_udp_conn *server_conn;
static struct disco_request_pdu *req;
static struct disco_response_pdu resp;
static struct disco_seed seed;
static uint8_t state;
static uint8_t sector;
static uint16_t interval;
static struct ctimer disco_timer;
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
extern uint16_t uip_len;
extern void *uip_appdata;
__xdata __at(BOOTTY_CMD_LOCATION) static uint8_t bd;
/*---------------------------------------------------------------------------*/
static void timer_handler(void *p);
/*---------------------------------------------------------------------------*/
static void
abort() CC_NON_BANKED
{
PRINTF("Disco: Abort @ %lu\n", clock_seconds());
n740_analog_deactivate();
m25p16_dp();
n740_analog_activate();
state = DISCO_STATE_LISTENING;
memset(&seed, 0, sizeof(seed));
ctimer_stop(&disco_timer);
batmon_log(LOG_TRIGGER_OAP_DISCO_ABORT);
}
/*---------------------------------------------------------------------------*/
static void
restart_timer(uint16_t t) CC_NON_BANKED
{
interval = t;
ctimer_stop(&disco_timer);
ctimer_set(&disco_timer, interval, timer_handler, &state);
}
/*---------------------------------------------------------------------------*/
static void
timer_handler(void *p)
{
uint8_t *s = p;
uint8_t wip;
PRINTF("Disco: @ %lu, s: %u\n", clock_seconds(), *s);
if(*s == DISCO_STATE_PREPARING) {
n740_analog_deactivate();
wip = M25P16_WIP();
n740_analog_activate();
if(wip) {
restart_timer(DISCO_TIMEOUT_PREPARE);
} else {
PRINTF("Disco: Erased %u\n", sector);
if((sector & 1) == 0) {
sector++;
PRINTF("Disco: Next %u\n", sector);
n740_analog_deactivate();
m25p16_se(sector);
n740_analog_activate();
restart_timer(DISCO_TIMEOUT_PREPARE);
} else {
PRINTF("Disco: Ready\n");
*s = DISCO_STATE_READY;
resp.status = DISCO_CMD_INIT;
restart_timer(DISCO_TIMEOUT_ABORT);
server_conn->rport = seed.port;
uip_ipaddr_copy(&server_conn->ripaddr, &seed.addr);
uip_udp_packet_send(server_conn, &resp, DISCO_RESP_LEN_INIT);
/* Restore server connection to allow data from any node */
uip_create_unspecified(&server_conn->ripaddr);
server_conn->rport = 0;
}
}
} else if(*s == DISCO_STATE_READY) {
abort();
} else if(*s == DISCO_STATE_REBOOTING) {
watchdog_reboot();
}
}
/*---------------------------------------------------------------------------*/
static uint8_t
is_protected(uint8_t a) CC_NON_BANKED
{
uint8_t bp = M25P16_BP() >> 2;
if(bp > 5) {
return SECTOR_PROTECTED;
}
bp -= 1;
if(a >= (32 - (1 << bp))) {
return SECTOR_PROTECTED;
}
return SECTOR_UNPROTECTED;
}
/*---------------------------------------------------------------------------*/
static uint8_t
cmd_init() CC_NON_BANKED
{
PRINTF("Disco: Init 0x%02x\n", req->addr[0]);
if(uip_datalen() != DISCO_LEN_INIT) {
PRINTF("Disco: Bad len (%u)\n", uip_datalen());
resp.status = DISCO_ERR_BAD_LEN;
return DISCO_RESP_LEN_ERR;
}
n740_analog_deactivate();
m25p16_res();
sector = 2 * req->addr[0];
if(is_protected(sector) == SECTOR_PROTECTED
|| is_protected(sector + 1) == SECTOR_PROTECTED) {
resp.status = DISCO_ERR_PROTECTED;
n740_analog_activate();
return DISCO_RESP_LEN_ERR;
}
m25p16_se(sector);
n740_analog_activate();
state = DISCO_STATE_PREPARING;
restart_timer(DISCO_TIMEOUT_PREPARE);
/* Store the sender's address/port so we can reply when ready */
seed.port = UIP_UDP_BUF->srcport;
uip_ipaddr_copy(&seed.addr, &UIP_IP_BUF->srcipaddr);
PRINTF("Disco: OK\n");
batmon_log(LOG_TRIGGER_OAP_DISCO_START);
return DISCO_RESPONSE_NONE;
}
/*---------------------------------------------------------------------------*/
static uint8_t
cmd_write() CC_NON_BANKED
{
PRINTF("Disco: Write 0x%02x%02x%02x\n", req->addr[0], req->addr[1],
req->addr[2]);
if(uip_datalen() != DISCO_LEN_WRITE) {
resp.status = DISCO_ERR_BAD_LEN;
return DISCO_RESP_LEN_ERR;
}
restart_timer(DISCO_TIMEOUT_ABORT);
n740_analog_deactivate();
m25p16_pp(req->addr, req->data, DISCO_FLEN_DATA);
watchdog_periodic();
while(M25P16_WIP());
n740_analog_activate();
resp.status = DISCO_CMD_WRITE;
memcpy(resp.addr, req->addr, DISCO_FLEN_ADDR);
return DISCO_RESP_LEN_WRITE;
}
/*---------------------------------------------------------------------------*/
static uint8_t
cmd_switch() CC_NON_BANKED
{
PRINTF("Disco: Switch 0x%02x\n", req->addr[0]);
if(uip_datalen() != DISCO_LEN_SWITCH) {
resp.status = DISCO_ERR_BAD_LEN;
return DISCO_RESP_LEN_ERR;
}
if(req->addr[0] > 15) {
resp.status = DISCO_ERR_BAD_OFFSET;
return DISCO_RESP_LEN_ERR;
}
bd = BOOTTY_CMD_COPY_IMAGE;
bd |= req->addr[0];
resp.status = DISCO_CMD_SWITCH;
resp.addr[0] = req->addr[0];
restart_timer(DISCO_TIMEOUT_REBOOT);
state = DISCO_STATE_REBOOTING;
return DISCO_RESP_LEN_SWITCH;
}
/*---------------------------------------------------------------------------*/
static uint8_t
cmd_done() CC_NON_BANKED
{
PRINTF("Disco: Done\n");
if(uip_datalen() != DISCO_LEN_DONE) {
resp.status = DISCO_ERR_BAD_LEN;
return DISCO_RESP_LEN_ERR;
}
resp.status = DISCO_CMD_DONE;
batmon_log(LOG_TRIGGER_OAP_DISCO_DONE);
return DISCO_RESP_LEN_DONE;
}
/*---------------------------------------------------------------------------*/
static uint8_t
event_handler(process_event_t ev) CC_NON_BANKED
{
uint8_t rv = DISCO_RESPONSE_NONE;
if(ev != tcpip_event) {
return rv;
}
/* Always accept CMD_DONE */
if(req->cmd == DISCO_CMD_DONE) {
return cmd_done();
}
/* Always accept switch too */
if(req->cmd == DISCO_CMD_SWITCH) {
return cmd_switch();
}
switch(state) {
case DISCO_STATE_LISTENING:
req = uip_appdata;
if(req->cmd == DISCO_CMD_INIT) {
rv = cmd_init();
}
break;
case DISCO_STATE_PREPARING:
PRINTF("Disco: Not Ready\n");
resp.status = DISCO_ERR_NOT_READY;
rv = DISCO_RESP_LEN_ERR;
break;
case DISCO_STATE_READY:
req = uip_appdata;
if(req->cmd == DISCO_CMD_WRITE) {
rv = cmd_write();
} else if(req->cmd == DISCO_CMD_INIT) {
resp.status = DISCO_ERR_INIT_DONE;
rv = DISCO_RESP_LEN_ERR;
} else if(req->cmd == DISCO_CMD_SWITCH) {
rv = cmd_switch();
}
break;
}
return rv;
}
/*---------------------------------------------------------------------------*/
PROCESS(disco_process, "Disco Server Process");
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(disco_process, ev, data)
{
uint8_t len;
PROCESS_BEGIN();
PRINTF("Disco Server\n");
server_conn = udp_new(NULL, UIP_HTONS(0), NULL);
udp_bind(server_conn, UIP_HTONS(DISCO_UDP_PORT));
state = DISCO_STATE_LISTENING;
while(1) {
PROCESS_YIELD();
len = event_handler(ev);
if(len > 0) {
server_conn->rport = UIP_UDP_BUF->srcport;
uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
uip_udp_packet_send(server_conn, &resp, len);
/* Restore server connection to allow data from any node */
uip_create_unspecified(&server_conn->ripaddr);
server_conn->rport = 0;
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
Reference in New Issue View Git Blame Copy Permalink