1 files changed, 183 insertions, 0 deletions
diff --git a/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c b/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c
new file mode 100644
index 000000000..ac4f8779b
--- /dev/null
+++ b/demos/ARM7-AT91SAM7X-UIP-GCC/web/webthread.c
@@ -0,0 +1,183 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#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}
+};
+
+static const MACConfig mac_config = {macaddr.addr};
+
+#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(&ETHD1, &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(&ETHD1, &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(&ETHD1);
+  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(&ETHD1), &el0, FRAME_RECEIVED_ID);
+  chEvtAddEvents(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 driver start.
+   */
+  macStart(&ETHD1, &mac_config);
+  (void)macPollLinkStatus(&ETHD1);
+
+  /*
+   * 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;
+}