PIC/Demo%20trimmet/ARPTsk.c

/*********************************************************************
 *
 *                  ARP Server Module for Microchip TCP/IP Stack
 *
 *********************************************************************
 * FileName:        ARPTsk.c
 * Dependencies:    Compiler.h
 *                  string.h
 *                  ARP.h
 *                  ARPTsk.h
 * Processor:       PIC18, PIC24F, PIC24H, dsPIC30F, dsPIC33F
 * Complier:        Microchip C18 v3.02 or higher
 *                                      Microchip C30 v2.01 or higher
 * Company:         Microchip Technology, Inc.
 *
 * Software License Agreement
 *
 * This software is owned by Microchip Technology Inc. ("Microchip") 
 * and is supplied to you for use exclusively as described in the 
 * associated software agreement.  This software is protected by 
 * software and other intellectual property laws.  Any use in 
 * violation of the software license may subject the user to criminal 
 * sanctions as well as civil liability.  Copyright 2006 Microchip
 * Technology Inc.  All rights reserved.
 *
 * This software is provided "AS IS."  MICROCHIP DISCLAIMS ALL 
 * WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, NOT LIMITED 
 * TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND 
 * INFRINGEMENT.  Microchip shall in no event be liable for special, 
 * incidental, or consequential damages.
 *
 *
 * Author               Date    Comment
 *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Nilesh Rajbharti     8/20/01 Original        (Rev 1.0)
 * Nilesh Rajbharti     2/9/02  Cleanup
 * Nilesh Rajbharti     5/22/02 Rev 2.0 (See version.log for detail)
 ********************************************************************/

#include "Compiler.h"
#include <string.h>

#include "ARP.h"
#include "ARPTsk.h"

/*
 * ARP Task FSM States
 */
typedef enum _ARP_STATE
{
    SM_ARP_IDLE,
    SM_ARP_REPLY
} ARP_STATE;


/*
 * This ARP task caches one ARP response.
 */
static ARP_STATE smARP;

#ifdef STACK_CLIENT_MODE
static NODE_INFO Cache;
#endif


/*********************************************************************
 * Function:        void ARPInit(void)
 *
 * PreCondition:    None
 *
 * Input:           None
 *
 * Output:          ARP Cache is initialized.
 *
 * Side Effects:    None
 *
 * Overview:        None
 *
 * Note:            None
 ********************************************************************/
void ARPInit(void)
{
    smARP = SM_ARP_IDLE;

#ifdef STACK_CLIENT_MODE
    Cache.MACAddr.v[0] = 0xff;
    Cache.MACAddr.v[1] = 0xff;
    Cache.MACAddr.v[2] = 0xff;
    Cache.MACAddr.v[3] = 0xff;
    Cache.MACAddr.v[4] = 0xff;
    Cache.MACAddr.v[5] = 0xff;

        Cache.IPAddr.Val = 0x0;
#endif
}


/*********************************************************************
 * Function:        BOOL ARPProcess(void)
 *
 * PreCondition:    ARP packet is ready in MAC buffer.
 *
 * Input:           None
 *
 * Output:          ARP FSM is executed.
 *
 * Side Effects:    None
 *
 * Overview:        None
 *
 * Note:            None
 ********************************************************************/
BOOL ARPProcess(void)
{
    NODE_INFO remoteNode;
    BYTE opCode;

    switch(smARP)
    {
    case SM_ARP_IDLE:
        if ( !ARPGet(&remoteNode, &opCode) )
            break;

        if ( opCode == ARP_REPLY )
        {
//#ifdef STACK_CLIENT_MODE
            Cache.MACAddr = remoteNode.MACAddr;
            Cache.IPAddr.Val = remoteNode.IPAddr.Val;
//#endif
            break;
        }
        else
            smARP = SM_ARP_REPLY;

    default:
                if(ARPPut(&remoteNode, ARP_REPLY))
                {
                        smARP = SM_ARP_IDLE;
                }
        else
            return FALSE;
        break;
    }
    return TRUE;
}


/*********************************************************************
 * Function:        void ARPResolve(IP_ADDR* IPAddr)
 *
 * PreCondition:    MACIsTxReady(TRUE) returns TRUE
 *
 * Input:           IPAddr  - IP Address to be resolved.
 *
 * Output:          None
 *
 * Side Effects:    None
 *
 * Overview:        An ARP request is sent.
 *
 * Note:            This function is available only when
 *                  STACK_CLIENT_MODE is defined.
 ********************************************************************/
#ifdef STACK_CLIENT_MODE
void ARPResolve(IP_ADDR *IPAddr)
{
    NODE_INFO remoteNode;

    remoteNode.IPAddr = *IPAddr;

    ARPPut(&remoteNode, ARP_REQUEST);
}
#endif


/*********************************************************************
 * Function:        BOOL ARPIsResolved(IP_ADDR* IPAddr,
 *                                      MAC_ADDR *MACAddr)
 *
 * PreCondition:    None
 *
 * Input:           IPAddr      - IPAddress to be resolved.
 *                  MACAddr     - Buffer to hold corresponding
 *                                MAC Address.
 *
 * Output:          TRUE if given IP Address has been resolved.
 *                  FALSE otherwise.
 *
 * Side Effects:    None
 *
 * Overview:        None
 *
 * Note:            This function is available only when
 *                  STACK_CLIENT_MODE is defined.
 ********************************************************************/
#ifdef STACK_CLIENT_MODE
BOOL ARPIsResolved(IP_ADDR *IPAddr, MAC_ADDR *MACAddr)
{
        int i;
    if(Cache.IPAddr.Val == IPAddr->Val /*|| Cache.IPAddr.Val == AppConfig.MyGateway.Val*/)
    {
        *MACAddr = Cache.MACAddr;

        return TRUE;
    }
    return FALSE;
}


BOOL MyArp(NODE_INFO *node)
{
        int i;
    if(Cache.IPAddr.Val == node->IPAddr.Val || Cache.IPAddr.Val == AppConfig.MyGateway.Val)
    {
        for (i=0; i<6;i++)
                node->MACAddr.v[i] = Cache.MACAddr.v[i];

        return TRUE;
    }
    return FALSE;
}

#endif
1	hedin	91	/*********************************************************************
2			*
3			* ARP Server Module for Microchip TCP/IP Stack
4			*
5			*********************************************************************
6			* FileName: ARPTsk.c
7			* Dependencies: Compiler.h
8			* string.h
9			* ARP.h
10			* ARPTsk.h
11			* Processor: PIC18, PIC24F, PIC24H, dsPIC30F, dsPIC33F
12			* Complier: Microchip C18 v3.02 or higher
13			* Microchip C30 v2.01 or higher
14			* Company: Microchip Technology, Inc.
15			*
16			* Software License Agreement
17			*
18			* This software is owned by Microchip Technology Inc. ("Microchip")
19			* and is supplied to you for use exclusively as described in the
20			* associated software agreement. This software is protected by
21			* software and other intellectual property laws. Any use in
22			* violation of the software license may subject the user to criminal
23			* sanctions as well as civil liability. Copyright 2006 Microchip
24			* Technology Inc. All rights reserved.
25			*
26			* This software is provided "AS IS." MICROCHIP DISCLAIMS ALL
27			* WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, NOT LIMITED
28			* TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
29			* INFRINGEMENT. Microchip shall in no event be liable for special,
30			* incidental, or consequential damages.
31			*
32			*
33			* Author Date Comment
34			*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
35			* Nilesh Rajbharti 8/20/01 Original (Rev 1.0)
36			* Nilesh Rajbharti 2/9/02 Cleanup
37			* Nilesh Rajbharti 5/22/02 Rev 2.0 (See version.log for detail)
38			********************************************************************/
39
40			#include "Compiler.h"
41			#include <string.h>
42
43			#include "ARP.h"
44			#include "ARPTsk.h"
45
46			/*
47			* ARP Task FSM States
48			*/
49			typedef enum _ARP_STATE
50			{
51			SM_ARP_IDLE,
52			SM_ARP_REPLY
53			} ARP_STATE;
54
55
56			/*
57			* This ARP task caches one ARP response.
58			*/
59			static ARP_STATE smARP;
60
61			#ifdef STACK_CLIENT_MODE
62			static NODE_INFO Cache;
63			#endif
64
65
66			/*********************************************************************
67			* Function: void ARPInit(void)
68			*
69			* PreCondition: None
70			*
71			* Input: None
72			*
73			* Output: ARP Cache is initialized.
74			*
75			* Side Effects: None
76			*
77			* Overview: None
78			*
79			* Note: None
80			********************************************************************/
81			void ARPInit(void)
82			{
83			smARP = SM_ARP_IDLE;
84
85			#ifdef STACK_CLIENT_MODE
86			Cache.MACAddr.v[0] = 0xff;
87			Cache.MACAddr.v[1] = 0xff;
88			Cache.MACAddr.v[2] = 0xff;
89			Cache.MACAddr.v[3] = 0xff;
90			Cache.MACAddr.v[4] = 0xff;
91			Cache.MACAddr.v[5] = 0xff;
92
93			Cache.IPAddr.Val = 0x0;
94			#endif
95			}
96
97
98
99			/*********************************************************************
100			* Function: BOOL ARPProcess(void)
101			*
102			* PreCondition: ARP packet is ready in MAC buffer.
103			*
104			* Input: None
105			*
106			* Output: ARP FSM is executed.
107			*
108			* Side Effects: None
109			*
110			* Overview: None
111			*
112			* Note: None
113			********************************************************************/
114			BOOL ARPProcess(void)
115			{
116			NODE_INFO remoteNode;
117			BYTE opCode;
118
119			switch(smARP)
120			{
121			case SM_ARP_IDLE:
122			if ( !ARPGet(&remoteNode, &opCode) )
123			break;
124
125			if ( opCode == ARP_REPLY )
126			{
127	hedin	92	//#ifdef STACK_CLIENT_MODE
128	hedin	91	Cache.MACAddr = remoteNode.MACAddr;
129			Cache.IPAddr.Val = remoteNode.IPAddr.Val;
130	hedin	92	//#endif
131	hedin	91	break;
132			}
133			else
134			smARP = SM_ARP_REPLY;
135
136			default:
137			if(ARPPut(&remoteNode, ARP_REPLY))
138			{
139			smARP = SM_ARP_IDLE;
140			}
141			else
142			return FALSE;
143			break;
144			}
145			return TRUE;
146			}
147
148
149			/*********************************************************************
150			* Function: void ARPResolve(IP_ADDR* IPAddr)
151			*
152			* PreCondition: MACIsTxReady(TRUE) returns TRUE
153			*
154			* Input: IPAddr - IP Address to be resolved.
155			*
156			* Output: None
157			*
158			* Side Effects: None
159			*
160			* Overview: An ARP request is sent.
161			*
162			* Note: This function is available only when
163			* STACK_CLIENT_MODE is defined.
164			********************************************************************/
165			#ifdef STACK_CLIENT_MODE
166			void ARPResolve(IP_ADDR *IPAddr)
167			{
168			NODE_INFO remoteNode;
169
170			remoteNode.IPAddr = *IPAddr;
171
172			ARPPut(&remoteNode, ARP_REQUEST);
173			}
174			#endif
175
176
177
178			/*********************************************************************
179			* Function: BOOL ARPIsResolved(IP_ADDR* IPAddr,
180			* MAC_ADDR *MACAddr)
181			*
182			* PreCondition: None
183			*
184			* Input: IPAddr - IPAddress to be resolved.
185			* MACAddr - Buffer to hold corresponding
186			* MAC Address.
187			*
188			* Output: TRUE if given IP Address has been resolved.
189			* FALSE otherwise.
190			*
191			* Side Effects: None
192			*
193			* Overview: None
194			*
195			* Note: This function is available only when
196			* STACK_CLIENT_MODE is defined.
197			********************************************************************/
198			#ifdef STACK_CLIENT_MODE
199			BOOL ARPIsResolved(IP_ADDR IPAddr, MAC_ADDR MACAddr)
200			{
201	hedin	92	int i;
202			if(Cache.IPAddr.Val == IPAddr->Val /\|\| Cache.IPAddr.Val == AppConfig.MyGateway.Val/)
203	hedin	91	{
204			*MACAddr = Cache.MACAddr;
205	hedin	92
206	hedin	91	return TRUE;
207			}
208			return FALSE;
209			}
210	hedin	92
211
212			BOOL MyArp(NODE_INFO *node)
213			{
214			int i;
215			if(Cache.IPAddr.Val == node->IPAddr.Val \|\| Cache.IPAddr.Val == AppConfig.MyGateway.Val)
216			{
217			for (i=0; i<6;i++)
218			node->MACAddr.v[i] = Cache.MACAddr.v[i];
219
220			return TRUE;
221			}
222			return FALSE;
223			}
224
225	hedin	91	#endif