ethnetWatchDog - code that uses Watchdog to reset Mbed every 30sec…

Users » eqon » Code » ethnetWatchDog

Egon V / Mbed 2 deprecated ethnetWatchDog

code that uses Watchdog to reset Mbed every 30seconds. After 30-60mins, the ethernet interface fails to setup() after WatchDog reset.

Dependencies: mbed

EthernetNetIf/LPC2368/lwip/include/lwip/dhcp.h@0:0ce833f21e63, 2012-06-07 (annotated)

Committer:: eqon
Date:: Thu Jun 07 05:44:29 2012 +0000
Revision:: 0:0ce833f21e63

Who changed what in which revision?

User	Revision	Line number	New contents of line
eqon	0:0ce833f21e63	1	/** @file
eqon	0:0ce833f21e63	2	*/
eqon	0:0ce833f21e63	3
eqon	0:0ce833f21e63	4	#ifndef __LWIP_DHCP_H__
eqon	0:0ce833f21e63	5	#define __LWIP_DHCP_H__
eqon	0:0ce833f21e63	6
eqon	0:0ce833f21e63	7	#include "lwip/opt.h"
eqon	0:0ce833f21e63	8
eqon	0:0ce833f21e63	9	#if LWIP_DHCP /* don't build if not configured for use in lwipopts.h */
eqon	0:0ce833f21e63	10
eqon	0:0ce833f21e63	11	#include "lwip/netif.h"
eqon	0:0ce833f21e63	12	#include "lwip/udp.h"
eqon	0:0ce833f21e63	13
eqon	0:0ce833f21e63	14	#ifdef __cplusplus
eqon	0:0ce833f21e63	15	extern "C" {
eqon	0:0ce833f21e63	16	#endif
eqon	0:0ce833f21e63	17
eqon	0:0ce833f21e63	18	/** period (in seconds) of the application calling dhcp_coarse_tmr() */
eqon	0:0ce833f21e63	19	#define DHCP_COARSE_TIMER_SECS 60
eqon	0:0ce833f21e63	20	/** period (in milliseconds) of the application calling dhcp_coarse_tmr() */
eqon	0:0ce833f21e63	21	#define DHCP_COARSE_TIMER_MSECS (DHCP_COARSE_TIMER_SECS * 1000UL)
eqon	0:0ce833f21e63	22	/** period (in milliseconds) of the application calling dhcp_fine_tmr() */
eqon	0:0ce833f21e63	23	#define DHCP_FINE_TIMER_MSECS 500
eqon	0:0ce833f21e63	24
eqon	0:0ce833f21e63	25	#define DHCP_CHADDR_LEN 16U
eqon	0:0ce833f21e63	26	#define DHCP_SNAME_LEN 64U
eqon	0:0ce833f21e63	27	#define DHCP_FILE_LEN 128U
eqon	0:0ce833f21e63	28
eqon	0:0ce833f21e63	29	struct dhcp
eqon	0:0ce833f21e63	30	{
eqon	0:0ce833f21e63	31	/** transaction identifier of last sent request */
eqon	0:0ce833f21e63	32	u32_t xid;
eqon	0:0ce833f21e63	33	/** our connection to the DHCP server */
eqon	0:0ce833f21e63	34	struct udp_pcb *pcb;
eqon	0:0ce833f21e63	35	/** incoming msg */
eqon	0:0ce833f21e63	36	struct dhcp_msg *msg_in;
eqon	0:0ce833f21e63	37	/** current DHCP state machine state */
eqon	0:0ce833f21e63	38	u8_t state;
eqon	0:0ce833f21e63	39	/** retries of current request */
eqon	0:0ce833f21e63	40	u8_t tries;
eqon	0:0ce833f21e63	41	#if LWIP_DHCP_AUTOIP_COOP
eqon	0:0ce833f21e63	42	u8_t autoip_coop_state;
eqon	0:0ce833f21e63	43	#endif
eqon	0:0ce833f21e63	44	u8_t subnet_mask_given;
eqon	0:0ce833f21e63	45
eqon	0:0ce833f21e63	46	struct pbuf p_out; / pbuf of outcoming msg */
eqon	0:0ce833f21e63	47	struct dhcp_msg msg_out; / outgoing msg */
eqon	0:0ce833f21e63	48	u16_t options_out_len; /* outgoing msg options length */
eqon	0:0ce833f21e63	49	u16_t request_timeout; /* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */
eqon	0:0ce833f21e63	50	u16_t t1_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for renewal time */
eqon	0:0ce833f21e63	51	u16_t t2_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for rebind time */
eqon	0:0ce833f21e63	52	ip_addr_t server_ip_addr; /* dhcp server address that offered this lease */
eqon	0:0ce833f21e63	53	ip_addr_t offered_ip_addr;
eqon	0:0ce833f21e63	54	ip_addr_t offered_sn_mask;
eqon	0:0ce833f21e63	55	ip_addr_t offered_gw_addr;
eqon	0:0ce833f21e63	56
eqon	0:0ce833f21e63	57	u32_t offered_t0_lease; /* lease period (in seconds) */
eqon	0:0ce833f21e63	58	u32_t offered_t1_renew; /* recommended renew time (usually 50% of lease period) */
eqon	0:0ce833f21e63	59	u32_t offered_t2_rebind; /* recommended rebind time (usually 66% of lease period) */
eqon	0:0ce833f21e63	60	/* @todo: LWIP_DHCP_BOOTP_FILE configuration option?
eqon	0:0ce833f21e63	61	integrate with possible TFTP-client for booting? */
eqon	0:0ce833f21e63	62	#if LWIP_DHCP_BOOTP_FILE
eqon	0:0ce833f21e63	63	ip_addr_t offered_si_addr;
eqon	0:0ce833f21e63	64	char boot_file_name[DHCP_FILE_LEN];
eqon	0:0ce833f21e63	65	#endif /* LWIP_DHCP_BOOTPFILE */
eqon	0:0ce833f21e63	66	};
eqon	0:0ce833f21e63	67
eqon	0:0ce833f21e63	68	/* MUST be compiled with "pack structs" or equivalent! */
eqon	0:0ce833f21e63	69	#ifdef PACK_STRUCT_USE_INCLUDES
eqon	0:0ce833f21e63	70	# include "arch/bpstruct.h"
eqon	0:0ce833f21e63	71	#endif
eqon	0:0ce833f21e63	72	PACK_STRUCT_BEGIN
eqon	0:0ce833f21e63	73	/** minimum set of fields of any DHCP message */
eqon	0:0ce833f21e63	74	struct dhcp_msg
eqon	0:0ce833f21e63	75	{
eqon	0:0ce833f21e63	76	PACK_STRUCT_FIELD(u8_t op);
eqon	0:0ce833f21e63	77	PACK_STRUCT_FIELD(u8_t htype);
eqon	0:0ce833f21e63	78	PACK_STRUCT_FIELD(u8_t hlen);
eqon	0:0ce833f21e63	79	PACK_STRUCT_FIELD(u8_t hops);
eqon	0:0ce833f21e63	80	PACK_STRUCT_FIELD(u32_t xid);
eqon	0:0ce833f21e63	81	PACK_STRUCT_FIELD(u16_t secs);
eqon	0:0ce833f21e63	82	PACK_STRUCT_FIELD(u16_t flags);
eqon	0:0ce833f21e63	83	PACK_STRUCT_FIELD(ip_addr_p_t ciaddr);
eqon	0:0ce833f21e63	84	PACK_STRUCT_FIELD(ip_addr_p_t yiaddr);
eqon	0:0ce833f21e63	85	PACK_STRUCT_FIELD(ip_addr_p_t siaddr);
eqon	0:0ce833f21e63	86	PACK_STRUCT_FIELD(ip_addr_p_t giaddr);
eqon	0:0ce833f21e63	87	PACK_STRUCT_FIELD(u8_t chaddr[DHCP_CHADDR_LEN]);
eqon	0:0ce833f21e63	88	PACK_STRUCT_FIELD(u8_t sname[DHCP_SNAME_LEN]);
eqon	0:0ce833f21e63	89	PACK_STRUCT_FIELD(u8_t file[DHCP_FILE_LEN]);
eqon	0:0ce833f21e63	90	PACK_STRUCT_FIELD(u32_t cookie);
eqon	0:0ce833f21e63	91	#define DHCP_MIN_OPTIONS_LEN 68U
eqon	0:0ce833f21e63	92	/** make sure user does not configure this too small */
eqon	0:0ce833f21e63	93	#if ((defined(DHCP_OPTIONS_LEN)) && (DHCP_OPTIONS_LEN < DHCP_MIN_OPTIONS_LEN))
eqon	0:0ce833f21e63	94	# undef DHCP_OPTIONS_LEN
eqon	0:0ce833f21e63	95	#endif
eqon	0:0ce833f21e63	96	/** allow this to be configured in lwipopts.h, but not too small */
eqon	0:0ce833f21e63	97	#if (!defined(DHCP_OPTIONS_LEN))
eqon	0:0ce833f21e63	98	/** set this to be sufficient for your options in outgoing DHCP msgs */
eqon	0:0ce833f21e63	99	# define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN
eqon	0:0ce833f21e63	100	#endif
eqon	0:0ce833f21e63	101	PACK_STRUCT_FIELD(u8_t options[DHCP_OPTIONS_LEN]);
eqon	0:0ce833f21e63	102	} PACK_STRUCT_STRUCT;
eqon	0:0ce833f21e63	103	PACK_STRUCT_END
eqon	0:0ce833f21e63	104	#ifdef PACK_STRUCT_USE_INCLUDES
eqon	0:0ce833f21e63	105	# include "arch/epstruct.h"
eqon	0:0ce833f21e63	106	#endif
eqon	0:0ce833f21e63	107
eqon	0:0ce833f21e63	108	void dhcp_set_struct(struct netif netif, struct dhcp dhcp);
eqon	0:0ce833f21e63	109	/** start DHCP configuration */
eqon	0:0ce833f21e63	110	err_t dhcp_start(struct netif *netif);
eqon	0:0ce833f21e63	111	/** enforce early lease renewal (not needed normally)*/
eqon	0:0ce833f21e63	112	err_t dhcp_renew(struct netif *netif);
eqon	0:0ce833f21e63	113	/** release the DHCP lease, usually called before dhcp_stop()*/
eqon	0:0ce833f21e63	114	err_t dhcp_release(struct netif *netif);
eqon	0:0ce833f21e63	115	/** stop DHCP configuration */
eqon	0:0ce833f21e63	116	void dhcp_stop(struct netif *netif);
eqon	0:0ce833f21e63	117	/** inform server of our manual IP address */
eqon	0:0ce833f21e63	118	void dhcp_inform(struct netif *netif);
eqon	0:0ce833f21e63	119	/** Handle a possible change in the network configuration */
eqon	0:0ce833f21e63	120	void dhcp_network_changed(struct netif *netif);
eqon	0:0ce833f21e63	121
eqon	0:0ce833f21e63	122	/** if enabled, check whether the offered IP address is not in use, using ARP */
eqon	0:0ce833f21e63	123	#if DHCP_DOES_ARP_CHECK
eqon	0:0ce833f21e63	124	void dhcp_arp_reply(struct netif netif, ip_addr_t addr);
eqon	0:0ce833f21e63	125	#endif
eqon	0:0ce833f21e63	126
eqon	0:0ce833f21e63	127	/** to be called every minute */
eqon	0:0ce833f21e63	128	void dhcp_coarse_tmr(void);
eqon	0:0ce833f21e63	129	/** to be called every half second */
eqon	0:0ce833f21e63	130	void dhcp_fine_tmr(void);
eqon	0:0ce833f21e63	131
eqon	0:0ce833f21e63	132	/** DHCP message item offsets and length */
eqon	0:0ce833f21e63	133	#define DHCP_OP_OFS 0
eqon	0:0ce833f21e63	134	#define DHCP_HTYPE_OFS 1
eqon	0:0ce833f21e63	135	#define DHCP_HLEN_OFS 2
eqon	0:0ce833f21e63	136	#define DHCP_HOPS_OFS 3
eqon	0:0ce833f21e63	137	#define DHCP_XID_OFS 4
eqon	0:0ce833f21e63	138	#define DHCP_SECS_OFS 8
eqon	0:0ce833f21e63	139	#define DHCP_FLAGS_OFS 10
eqon	0:0ce833f21e63	140	#define DHCP_CIADDR_OFS 12
eqon	0:0ce833f21e63	141	#define DHCP_YIADDR_OFS 16
eqon	0:0ce833f21e63	142	#define DHCP_SIADDR_OFS 20
eqon	0:0ce833f21e63	143	#define DHCP_GIADDR_OFS 24
eqon	0:0ce833f21e63	144	#define DHCP_CHADDR_OFS 28
eqon	0:0ce833f21e63	145	#define DHCP_SNAME_OFS 44
eqon	0:0ce833f21e63	146	#define DHCP_FILE_OFS 108
eqon	0:0ce833f21e63	147	#define DHCP_MSG_LEN 236
eqon	0:0ce833f21e63	148
eqon	0:0ce833f21e63	149	#define DHCP_COOKIE_OFS DHCP_MSG_LEN
eqon	0:0ce833f21e63	150	#define DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4)
eqon	0:0ce833f21e63	151
eqon	0:0ce833f21e63	152	#define DHCP_CLIENT_PORT 68
eqon	0:0ce833f21e63	153	#define DHCP_SERVER_PORT 67
eqon	0:0ce833f21e63	154
eqon	0:0ce833f21e63	155	/** DHCP client states */
eqon	0:0ce833f21e63	156	#define DHCP_OFF 0
eqon	0:0ce833f21e63	157	#define DHCP_REQUESTING 1
eqon	0:0ce833f21e63	158	#define DHCP_INIT 2
eqon	0:0ce833f21e63	159	#define DHCP_REBOOTING 3
eqon	0:0ce833f21e63	160	#define DHCP_REBINDING 4
eqon	0:0ce833f21e63	161	#define DHCP_RENEWING 5
eqon	0:0ce833f21e63	162	#define DHCP_SELECTING 6
eqon	0:0ce833f21e63	163	#define DHCP_INFORMING 7
eqon	0:0ce833f21e63	164	#define DHCP_CHECKING 8
eqon	0:0ce833f21e63	165	#define DHCP_PERMANENT 9
eqon	0:0ce833f21e63	166	#define DHCP_BOUND 10
eqon	0:0ce833f21e63	167	/** not yet implemented #define DHCP_RELEASING 11 */
eqon	0:0ce833f21e63	168	#define DHCP_BACKING_OFF 12
eqon	0:0ce833f21e63	169
eqon	0:0ce833f21e63	170	/** AUTOIP cooperatation flags */
eqon	0:0ce833f21e63	171	#define DHCP_AUTOIP_COOP_STATE_OFF 0
eqon	0:0ce833f21e63	172	#define DHCP_AUTOIP_COOP_STATE_ON 1
eqon	0:0ce833f21e63	173
eqon	0:0ce833f21e63	174	#define DHCP_BOOTREQUEST 1
eqon	0:0ce833f21e63	175	#define DHCP_BOOTREPLY 2
eqon	0:0ce833f21e63	176
eqon	0:0ce833f21e63	177	/** DHCP message types */
eqon	0:0ce833f21e63	178	#define DHCP_DISCOVER 1
eqon	0:0ce833f21e63	179	#define DHCP_OFFER 2
eqon	0:0ce833f21e63	180	#define DHCP_REQUEST 3
eqon	0:0ce833f21e63	181	#define DHCP_DECLINE 4
eqon	0:0ce833f21e63	182	#define DHCP_ACK 5
eqon	0:0ce833f21e63	183	#define DHCP_NAK 6
eqon	0:0ce833f21e63	184	#define DHCP_RELEASE 7
eqon	0:0ce833f21e63	185	#define DHCP_INFORM 8
eqon	0:0ce833f21e63	186
eqon	0:0ce833f21e63	187	/** DHCP hardware type, currently only ethernet is supported */
eqon	0:0ce833f21e63	188	#define DHCP_HTYPE_ETH 1
eqon	0:0ce833f21e63	189
eqon	0:0ce833f21e63	190	#define DHCP_MAGIC_COOKIE 0x63825363UL
eqon	0:0ce833f21e63	191
eqon	0:0ce833f21e63	192	/* This is a list of options for BOOTP and DHCP, see RFC 2132 for descriptions */
eqon	0:0ce833f21e63	193
eqon	0:0ce833f21e63	194	/** BootP options */
eqon	0:0ce833f21e63	195	#define DHCP_OPTION_PAD 0
eqon	0:0ce833f21e63	196	#define DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */
eqon	0:0ce833f21e63	197	#define DHCP_OPTION_ROUTER 3
eqon	0:0ce833f21e63	198	#define DHCP_OPTION_DNS_SERVER 6
eqon	0:0ce833f21e63	199	#define DHCP_OPTION_HOSTNAME 12
eqon	0:0ce833f21e63	200	#define DHCP_OPTION_IP_TTL 23
eqon	0:0ce833f21e63	201	#define DHCP_OPTION_MTU 26
eqon	0:0ce833f21e63	202	#define DHCP_OPTION_BROADCAST 28
eqon	0:0ce833f21e63	203	#define DHCP_OPTION_TCP_TTL 37
eqon	0:0ce833f21e63	204	#define DHCP_OPTION_END 255
eqon	0:0ce833f21e63	205
eqon	0:0ce833f21e63	206	/** DHCP options */
eqon	0:0ce833f21e63	207	#define DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */
eqon	0:0ce833f21e63	208	#define DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */
eqon	0:0ce833f21e63	209	#define DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */
eqon	0:0ce833f21e63	210
eqon	0:0ce833f21e63	211	#define DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */
eqon	0:0ce833f21e63	212	#define DHCP_OPTION_MESSAGE_TYPE_LEN 1
eqon	0:0ce833f21e63	213
eqon	0:0ce833f21e63	214	#define DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */
eqon	0:0ce833f21e63	215	#define DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */
eqon	0:0ce833f21e63	216
eqon	0:0ce833f21e63	217	#define DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */
eqon	0:0ce833f21e63	218	#define DHCP_OPTION_MAX_MSG_SIZE_LEN 2
eqon	0:0ce833f21e63	219
eqon	0:0ce833f21e63	220	#define DHCP_OPTION_T1 58 /* T1 renewal time */
eqon	0:0ce833f21e63	221	#define DHCP_OPTION_T2 59 /* T2 rebinding time */
eqon	0:0ce833f21e63	222	#define DHCP_OPTION_US 60
eqon	0:0ce833f21e63	223	#define DHCP_OPTION_CLIENT_ID 61
eqon	0:0ce833f21e63	224	#define DHCP_OPTION_TFTP_SERVERNAME 66
eqon	0:0ce833f21e63	225	#define DHCP_OPTION_BOOTFILE 67
eqon	0:0ce833f21e63	226
eqon	0:0ce833f21e63	227	/** possible combinations of overloading the file and sname fields with options */
eqon	0:0ce833f21e63	228	#define DHCP_OVERLOAD_NONE 0
eqon	0:0ce833f21e63	229	#define DHCP_OVERLOAD_FILE 1
eqon	0:0ce833f21e63	230	#define DHCP_OVERLOAD_SNAME 2
eqon	0:0ce833f21e63	231	#define DHCP_OVERLOAD_SNAME_FILE 3
eqon	0:0ce833f21e63	232
eqon	0:0ce833f21e63	233	#ifdef __cplusplus
eqon	0:0ce833f21e63	234	}
eqon	0:0ce833f21e63	235	#endif
eqon	0:0ce833f21e63	236
eqon	0:0ce833f21e63	237	#endif /* LWIP_DHCP */
eqon	0:0ce833f21e63	238
eqon	0:0ce833f21e63	239	#endif /__LWIP_DHCP_H__/

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	07 Jun 2012
Imports:	18
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

EthernetNetIf/LPC2368/lwip/include/lwip/dhcp.h@0:0ce833f21e63, 2012-06-07 (annotated)

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