X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/16ea5aa7a2e5f326f8ff129e740a19bb3fb7829f..ce8d0424b1a59bb2b0bd3ab8f69f4e4cf8c9930b:/Projects/Webserver/Lib/DHCPClientApp.c

diff --git a/Projects/Webserver/Lib/DHCPClientApp.c b/Projects/Webserver/Lib/DHCPClientApp.c
index 79170fabe..cf512734e 100644
--- a/Projects/Webserver/Lib/DHCPClientApp.c
+++ b/Projects/Webserver/Lib/DHCPClientApp.c
@@ -33,32 +33,29 @@
  *  DHCP Client Application. When connected to the uIP stack, this will retrieve IP configuration settings from the
  *  DHCP server on the network.
  */
- 
+
 #include "DHCPClientApp.h"
 
-#if defined(ENABLE_DHCP) || defined(__DOXYGEN__)
-/** Timer for managing the timeout period for a DHCP server to respond */
-struct timer DHCPTimer;
+#if defined(ENABLE_DHCP_CLIENT) || defined(__DOXYGEN__)
 
 /** Initialization function for the DHCP client. */
 void DHCPClientApp_Init(void)
 {
-	uip_udp_appstate_t* const AppState = &uip_udp_conn->appstate;
-	
 	/* Create a new UDP connection to the DHCP server port for the DHCP solicitation */
-	uip_ipaddr_t DHCPServerIPAddress;
-	uip_ipaddr(&DHCPServerIPAddress, 255, 255, 255, 255);
-	AppState->DHCPClient.Connection = uip_udp_new(&DHCPServerIPAddress, HTONS(DHCPC_SERVER_PORT));
+	struct uip_udp_conn* Connection = uip_udp_new(&uip_broadcast_addr, HTONS(DHCPC_SERVER_PORT));
 	
-	/* If the connection was sucessfully created, bind it to the local DHCP client port */
-	if(AppState->DHCPClient.Connection != NULL)
+	/* If the connection was successfully created, bind it to the local DHCP client port */
+	if (Connection != NULL)
 	{
-		uip_udp_bind(AppState->DHCPClient.Connection, HTONS(DHCPC_CLIENT_PORT));
+		uip_udp_appstate_t* const AppState = &Connection->appstate;
+		uip_udp_bind(Connection, HTONS(DHCPC_CLIENT_PORT));
+		
+		/* Set the initial client state */
 		AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
-	}
 
-	/* Set timeout period to half a second for a DHCP server to respond */
-	timer_set(&DHCPTimer, CLOCK_SECOND / 2);
+		/* Set timeout period to half a second for a DHCP server to respond */
+		timer_set(&AppState->DHCPClient.Timeout, CLOCK_SECOND / 2);
+	}
 }
  
 /** uIP stack application callback for the DHCP client. This function must be called each time the TCP/IP stack 
@@ -89,7 +86,7 @@ void DHCPClientApp_Callback(void)
 			uip_udp_send(AppDataSize);
 
 			/* Reset the timeout timer, progress to next state */
-			timer_reset(&DHCPTimer);
+			timer_reset(&AppState->DHCPClient.Timeout);
 			AppState->DHCPClient.CurrentState = DHCP_STATE_WaitForOffer;			
 			
 			break;
@@ -97,7 +94,7 @@ void DHCPClientApp_Callback(void)
 			if (!(uip_newdata()))
 			{
 				/* Check if the DHCP timeout period has expired while waiting for a response */
-				if (timer_expired(&DHCPTimer))
+				if (timer_expired(&AppState->DHCPClient.Timeout))
 				  AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
 				
 				break;
@@ -114,7 +111,7 @@ void DHCPClientApp_Callback(void)
 				DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_ROUTER,      &AppState->DHCPClient.DHCPOffer_Data.GatewayIP);
 				DHCPClientApp_GetOption(AppData->Options, DHCP_OPTION_SERVER_ID,   &AppState->DHCPClient.DHCPOffer_Data.ServerIP);
 				
-				timer_reset(&DHCPTimer);
+				timer_reset(&AppState->DHCPClient.Timeout);
 				AppState->DHCPClient.CurrentState = DHCP_STATE_SendRequest;
 			}
 
@@ -135,7 +132,7 @@ void DHCPClientApp_Callback(void)
 			uip_udp_send(AppDataSize);
 			
 			/* Reset the timeout timer, progress to next state */
-			timer_reset(&DHCPTimer);
+			timer_reset(&AppState->DHCPClient.Timeout);
 			AppState->DHCPClient.CurrentState = DHCP_STATE_WaitForACK;
 
 			break;
@@ -143,7 +140,7 @@ void DHCPClientApp_Callback(void)
 			if (!(uip_newdata()))
 			{
 				/* Check if the DHCP timeout period has expired while waiting for a response */
-				if (timer_expired(&DHCPTimer))
+				if (timer_expired(&AppState->DHCPClient.Timeout))
 				  AppState->DHCPClient.CurrentState = DHCP_STATE_SendDiscover;
 				
 				break;
@@ -188,13 +185,13 @@ uint16_t DHCPClientApp_FillDHCPHeader(DHCP_Header_t* DHCPHeader, uint8_t DHCPMes
 	DHCPHeader->TransactionID         = DHCP_TRANSACTION_ID;
 	DHCPHeader->ElapsedSeconds        = 0;
 	DHCPHeader->Flags                 = HTONS(BOOTP_BROADCAST);
-	memcpy(&DHCPHeader->ClientIP, &uip_hostaddr, sizeof(uip_ipaddr_t));
-	memcpy(&DHCPHeader->YourIP, &AppState->DHCPClient.DHCPOffer_Data.AllocatedIP, sizeof(uip_ipaddr_t));
-	memcpy(&DHCPHeader->NextServerIP, &AppState->DHCPClient.DHCPOffer_Data.ServerIP, sizeof(uip_ipaddr_t));
+	memcpy(&DHCPHeader->ClientIP,     &uip_hostaddr,        sizeof(uip_ipaddr_t));
+	memcpy(&DHCPHeader->YourIP,       &AppState->DHCPClient.DHCPOffer_Data.AllocatedIP, sizeof(uip_ipaddr_t));
+	memcpy(&DHCPHeader->NextServerIP, &AppState->DHCPClient.DHCPOffer_Data.ServerIP,    sizeof(uip_ipaddr_t));
 	memcpy(&DHCPHeader->ClientHardwareAddress, &MACAddress, sizeof(struct uip_eth_addr));
 	DHCPHeader->Cookie                = DHCP_MAGIC_COOKIE;
 	
-	/* Add a DHCP type and terminator options to the start of the DHCP options field */
+	/* Add a DHCP message type and terminator options to the start of the DHCP options field */
 	DHCPHeader->Options[0]            = DHCP_OPTION_MSG_TYPE;
 	DHCPHeader->Options[1]            = 1;
 	DHCPHeader->Options[2]            = DHCPMessageType;
@@ -240,7 +237,7 @@ uint8_t DHCPClientApp_SetOption(uint8_t* DHCPOptionList, uint8_t Option, uint8_t
  */
 bool DHCPClientApp_GetOption(uint8_t* DHCPOptionList, uint8_t Option, void* Destination)
 {
-	/* Look through the incomming DHCP packet's options list for the requested option */
+	/* Look through the incoming DHCP packet's options list for the requested option */
 	while (*DHCPOptionList != DHCP_OPTION_END)
 	{
 		/* Check if the current DHCP option in the packet is the one requested */
@@ -249,7 +246,7 @@ bool DHCPClientApp_GetOption(uint8_t* DHCPOptionList, uint8_t Option, void* Dest
 			/* Copy request option's data to the destination buffer */
 			memcpy(Destination, &DHCPOptionList[2], DHCPOptionList[1]);
 			
-			/* Indicate that the requested option data was sucessfully retrieved */
+			/* Indicate that the requested option data was successfully retrieved */
 			return true;
 		}
 		
@@ -257,7 +254,7 @@ bool DHCPClientApp_GetOption(uint8_t* DHCPOptionList, uint8_t Option, void* Dest
 		DHCPOptionList += (DHCPOptionList[1] + 2);
 	}
 	
-	/* Requested option not found in the incomming packet's DHCP options list */
+	/* Requested option not found in the incoming packet's DHCP options list */
 	return false;
 }
 #endif