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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "ch.h"
#include "hal.h"
#include "evtimer.h"
#include "uip.h"
#include "uip_arp.h"
#include "httpd.h"
#include "clock-arch.h"
#define IPADDR0 192
#define IPADDR1 168
#define IPADDR2 1
#define IPADDR3 20
#define SEND_TIMEOUT 50
static const struct uip_eth_addr macaddr = {
{0xC2, 0xAF, 0x51, 0x03, 0xCF, 0x46}
};
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
/*
* uIP send function wrapping the EMAC functions.
*/
static void network_device_send(void) {
MACTransmitDescriptor td;
if (macWaitTransmitDescriptor(Ð1, &td, MS2ST(SEND_TIMEOUT)) == RDY_OK) {
if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN)
macWriteTransmitDescriptor(&td, uip_buf, uip_len);
else {
macWriteTransmitDescriptor(&td, uip_buf, UIP_LLH_LEN + UIP_TCPIP_HLEN);
macWriteTransmitDescriptor(&td, uip_appdata,
uip_len - (UIP_LLH_LEN + UIP_TCPIP_HLEN));
}
macReleaseTransmitDescriptor(&td);
}
/* Dropped... */
}
/*
* uIP receive function wrapping the EMAC function.
*/
static size_t network_device_read(void) {
MACReceiveDescriptor rd;
size_t size;
if (macWaitReceiveDescriptor(Ð1, &rd, TIME_IMMEDIATE) != RDY_OK)
return 0;
size = rd.size;
macReadReceiveDescriptor(&rd, uip_buf, size);
macReleaseReceiveDescriptor(&rd);
return size;
}
void clock_init(void) {}
clock_time_t clock_time( void )
{
return chTimeNow();
}
/*
* TCP/IP periodic timer.
*/
static void PeriodicTimerHandler(eventid_t id) {
int i;
(void)id;
for (i = 0; i < UIP_CONNS; i++) {
uip_periodic(i);
if (uip_len > 0) {
uip_arp_out();
network_device_send();
}
}
}
/*
* ARP periodic timer.
*/
static void ARPTimerHandler(eventid_t id) {
(void)id;
(void)macPollLinkStatus(Ð1);
uip_arp_timer();
}
/*
* Ethernet frame received.
*/
static void FrameReceivedHandler(eventid_t id) {
(void)id;
while ((uip_len = network_device_read()) > 0) {
if (BUF->type == HTONS(UIP_ETHTYPE_IP)) {
uip_arp_ipin();
uip_input();
if (uip_len > 0) {
uip_arp_out();
network_device_send();
}
}
else if (BUF->type == HTONS(UIP_ETHTYPE_ARP)) {
uip_arp_arpin();
if (uip_len > 0)
network_device_send();
}
}
}
#define FRAME_RECEIVED_ID 0
#define PERIODIC_TIMER_ID 1
#define ARP_TIMER_ID 2
static const evhandler_t evhndl[] = {
FrameReceivedHandler,
PeriodicTimerHandler,
ARPTimerHandler
};
msg_t WebThread(void *p) {
EvTimer evt1, evt2;
EventListener el0, el1, el2;
uip_ipaddr_t ipaddr;
(void)p;
/*
* Event sources setup.
*/
chEvtRegister(macGetReceiveEventSource(Ð1), &el0, FRAME_RECEIVED_ID);
chEvtAddFlags(EVENT_MASK(FRAME_RECEIVED_ID)); /* In case some frames are already buffered */
evtInit(&evt1, MS2ST(500));
evtStart(&evt1);
chEvtRegister(&evt1.et_es, &el1, PERIODIC_TIMER_ID);
evtInit(&evt2, S2ST(10));
evtStart(&evt2);
chEvtRegister(&evt2.et_es, &el2, ARP_TIMER_ID);
/*
* EMAC settings.
*/
macSetAddress(Ð1, &macaddr.addr[0]);
(void)macPollLinkStatus(Ð1);
/*
* uIP initialization.
*/
uip_init();
uip_setethaddr(macaddr);
uip_ipaddr(ipaddr, IPADDR0, IPADDR1, IPADDR2, IPADDR3);
uip_sethostaddr(ipaddr);
httpd_init();
while (TRUE) {
chEvtDispatch(evhndl, chEvtWaitOne(ALL_EVENTS));
}
return 0;
}
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