设有二元函数 f(x,y) = f(x) + f(y) 其中：f(x) = f(x-1) * x (x>1) f(x) = 1 (x=1) f(y) = f(y-1) * f(y-2) (y>2) f(y) = 1 (y=1,2) 请编程建立3个并发协作进程，它们分别完成f(x,y),f(x),f(y)
上传时间： 2017-09-18
上传用户：baiom
TI CC254x Bluetooth Low Energy Stack v1.4.1.43908
上传时间： 2015-06-09
上传用户：www20031722
/* ********************************************************************************************************* * uC/TCP-IP V2 * The Embedded TCP/IP Suite * * (c) Copyright 2003-2010; Micrium, Inc.; Weston, FL * * All rights reserved. Protected by international copyright laws. * * uC/TCP-IP is provided in source form to registered licensees ONLY. It is * illegal to distribute this source code to any third party unless you receive * written permission by an authorized Micrium representative. Knowledge of * the source code may NOT be used to develop a similar product. * * Please help us continue to provide the Embedded community with the finest * software available. Your honesty is greatly appreciated. * * You can contact us at www.micrium.com. ********************************************************************************************************* */ /* ********************************************************************************************************* * * NETWORK TCP LAYER * (TRANSMISSION CONTROL PROTOCOL) * * Filename : net_tcp.h * Version : V2.10 * Programmer(s) : ITJ ********************************************************************************************************* * Note(s) : (1) Supports Transmission Control Protocol as described in RFC #793 with the following * restrictions/constraints : * * (a) TCP Security & Precedence NOT supported RFC # 793, Section 3.6 * * (b) TCP Urgent Data NOT supported RFC # 793, Section 3.7 * 'The Communication of * Urgent Information' * * (c) The following TCP options NOT supported : * * (1) Window Scale RFC #1072, Section 2 * RFC #1323, Section 2 * (2) Selective Acknowledgement (SACK) RFC #1072, Section 3 * RFC #2018 * RFC #2883 * (3) TCP Echo RFC #1072, Section 4 * (4) Timestamp RFC #1323, Section 3.2 * (5) Protection Against Wrapped Sequences (PAWS) RFC #1323, Section 4 * * (d) #### IP-Options-to-TCP-Connection RFC #1122, Section 4.2.3.8 * Handling NOT supported * * (e) #### ICMP-Error-Message-to-TCP-Connection RFC #1122, Section 4.2.3.9 * Handling NOT currently supported * * (2) TCP Layer assumes/requires Network Socket Layer (see 'net_sock.h MODULE Note #1a2'). ********************************************************************************************************* */ /*$PAGE*/ /* ********************************************************************************************************* * MODULE * * Note(s) : (1) TCP Layer module is NOT required for UDP-to-Application API configuration. * * See also 'net_cfg.h TRANSPORT LAYER CONFIGURATION' * & 'net_cfg.h USER DATAGRAM PROTOCOL LAYER CONFIGURATION'. * * See also 'net_tcp.h Note #2'. * * (2) The following TCP-module-present configuration value MUST be pre-#define'd in * 'net_cfg_net.h' PRIOR to all other network modules that require TCP Layer * configuration (see 'net_cfg_net.h TCP LAYER CONFIGURATION Note #2b') : * * NET_TCP_MODULE_PRESENT ********************************************************************************************************* */ #ifdef NET_TCP_MODULE_PRESENT /* See Note #2. */ /* ********************************************************************************************************* * EXTERNS ********************************************************************************************************* */ #if ((defined(NET_TCP_MODULE)) && \ (defined(NET_GLOBALS_EXT))) #define NET_TCP_EXT #else #define NET_TCP_EXT extern #endif /*$PAGE*/ /* ********************************************************************************************************* * DEFINES ********************************************************************************************************* */ /* ********************************************************************************************************* * TCP HEADER DEFINES * * Note(s) : (1) The following TCP value MUST be pre-#define'd in 'net_def.h' PRIOR to 'net_buf.h' so that * the Network Buffer Module can configure maximum buffer header size (see 'net_def.h TCP * LAYER DEFINES' & 'net_buf.h NETWORK BUFFER INDEX & SIZE DEFINES Note #1') : * * (a) NET_TCP_HDR_SIZE_MAX 60 (NET_TCP_HDR_LEN_MAX * * NET_TCP_HDR_LEN_WORD_SIZE) * * (2) Urgent pointer & data NOT supported (see 'net_tcp.h Note #1b'). ********************************************************************************************************* */ #define NET_TCP_HDR_LEN_MASK 0xF000u #define NET_TCP_HDR_LEN_SHIFT 12u #define NET_TCP_HDR_LEN_NONE 0u #define NET_TCP_HDR_LEN_MIN 5u #define NET_TCP_HDR_LEN_MAX 15u #define NET_TCP_HDR_LEN_WORD_SIZE CPU_WORD_SIZE_32 #define NET_TCP_HDR_SIZE_MIN (NET_TCP_HDR_LEN_MIN * NET_TCP_HDR_LEN_WORD_SIZE) #if 0 /* See Note #1a. */ #define NET_TCP_HDR_SIZE_MAX (NET_TCP_HDR_LEN_MAX * NET_TCP_HDR_LEN_WORD_SIZE) #endif #define NET_TCP_HDR_SIZE_TOT_MIN (NET_IP_HDR_SIZE_TOT_MIN + NET_TCP_HDR_SIZE_MIN) #define NET_TCP_HDR_SIZE_TOT_MAX (NET_IP_HDR_SIZE_TOT_MAX + NET_TCP_HDR_SIZE_MAX) #define NET_TCP_PSEUDO_HDR_SIZE 12u /* = sizeof(NET_TCP_PSEUDO_HDR) */ #define NET_TCP_PORT_NBR_RESERVED NET_PORT_NBR_RESERVED #define NET_TCP_PORT_NBR_NONE NET_TCP_PORT_NBR_RESERVED #define NET_TCP_HDR_URG_PTR_NONE 0x0000u /* See Note #2. */ /*$PAGE*/ /* ********************************************************************************************************* * TCP HEADER FLAG DEFINES * * Note(s) : (1) See 'TCP HEADER Note #2' for flag fields. * * (2) Urgent pointer & data NOT supported (see 'net_tcp.h Note #1b'). ********************************************************************************************************* */ #define NET_TCP_HDR_FLAG_MASK 0x0FFFu #define NET_TCP_HDR_FLAG_NONE DEF_BIT_NONE #define NET_TCP_HDR_FLAG_RESERVED 0x0FE0u /* MUST be '0'. */ #define NET_TCP_HDR_FLAG_URGENT DEF_BIT_05 /* See Note #2. */ #define NET_TCP_HDR_FLAG_ACK DEF_BIT_04 #define NET_TCP_HDR_FLAG_PUSH DEF_BIT_03 #define NET_TCP_HDR_FLAG_RESET DEF_BIT_02 #define NET_TCP_HDR_FLAG_SYNC DEF_BIT_01 #define NET_TCP_HDR_FLAG_FIN DEF_BIT_00 #define NET_TCP_HDR_FLAG_CLOSE NET_TCP_HDR_FLAG_FIN /* ********************************************************************************************************* * TCP FLAG DEFINES ********************************************************************************************************* */ /* ------------------ NET TCP FLAGS ------------------- */ #define NET_TCP_FLAG_NONE DEF_BIT_NONE #define NET_TCP_FLAG_USED DEF_BIT_00 /* TCP conn cur used; i.e. NOT in free TCP conn pool. */ /* ------------------ TCP TX FLAGS ------------------- */ /* TCP tx flags copied from TCP hdr flags. */ #define NET_TCP_FLAG_TX_FIN NET_TCP_HDR_FLAG_FIN #define NET_TCP_FLAG_TX_CLOSE NET_TCP_FLAG_TX_FIN #define NET_TCP_FLAG_TX_SYNC NET_TCP_HDR_FLAG_SYNC #define NET_TCP_FLAG_TX_RESET NET_TCP_HDR_FLAG_RESET #define NET_TCP_FLAG_TX_PUSH NET_TCP_HDR_FLAG_PUSH #define NET_TCP_FLAG_TX_ACK NET_TCP_HDR_FLAG_ACK #define NET_TCP_FLAG_TX_URGENT NET_TCP_HDR_FLAG_URGENT #define NET_TCP_FLAG_TX_BLOCK DEF_BIT_07 /* ------------------ TCP RX FLAGS ------------------- */ #define NET_TCP_FLAG_RX_DATA_PEEK DEF_BIT_08 #define NET_TCP_FLAG_RX_BLOCK DEF_BIT_15 /*$PAGE*/ /* ********************************************************************************************************* * TCP TYPE DEFINES * * Note(s) : (1) NET_TCP_TYPE_&&& #define values specifically chosen as ASCII representations of the TCP * types. Memory displays of TCP types will display with their chosen ASCII names. ********************************************************************************************************* */ /* ------------------ NET TCP TYPES ------------------- */ #if (CPU_CFG_ENDIAN_TYPE == CPU_ENDIAN_TYPE_BIG) #define NET_TCP_TYPE_NONE 0x4E4F4E45u /* "NONE" in ASCII. */ #define NET_TCP_TYPE_CONN 0x54435020u /* "TCP " in ASCII. */ #else #if (CPU_CFG_DATA_SIZE == CPU_WORD_SIZE_32) #define NET_TCP_TYPE_NONE 0x454E4F4Eu /* "NONE" in ASCII. */ #define NET_TCP_TYPE_CONN 0x20504354u /* "TCP " in ASCII. */ #elif (CPU_CFG_DATA_SIZE == CPU_WORD_SIZE_16) #define NET_TCP_TYPE_NONE 0x4F4E454Eu /* "NONE" in ASCII. */ #define NET_TCP_TYPE_CONN 0x43542050u /* "TCP " in ASCII. */ #else /* Dflt CPU_WORD_SIZE_08. */ #define NET_TCP_TYPE_NONE 0x4E4F4E45u /* "NONE" in ASCII. */ #define NET_TCP_TYPE_CONN 0x54435020u /* "TCP " in ASCII. */ #endif #endif /* ********************************************************************************************************* * TCP SEQUENCE NUMBER DEFINES * * Note(s) : (1) TCP initial transmit sequence number is incremented by a fixed value, preferably a large * prime value or a large value with multiple unique factors. * * (a) One reasonable TCP initial transmit sequence number increment value example : * * 65527 = 37 * 23 * 11 * 7 * * * #### NET_TCP_TX_SEQ_NBR_CTR_INC could be developer-configured in 'net_cfg.h'. * * See also 'NET_TCP_TX_GET_SEQ_NBR() Notes #1b2 & #1c2'. ********************************************************************************************************* */ #define NET_TCP_SEQ_NBR_NONE 0u #define NET_TCP_ACK_NBR_NONE NET_TCP_SEQ_NBR_NONE #define NET_TCP_TX_SEQ_NBR_CTR_INC 65527u /* See Note #1. */ #define NET_TCP_ACK_NBR_DUP_WIN_SIZE_SCALE 4 /*$PAGE*/ /* ********************************************************************************************************* * TCP DATA/TOTAL LENGTH DEFINES * * Note(s) : (1) (a) TCP total length #define's (NET_TCP_TOT_LEN) relate to the total size of a complete * TCP packet, including the packet's TCP header. Note that a complete TCP packet MAY * be fragmented in multiple Internet Protocol packets. * * (b) TCP data length #define's (NET_TCP_DATA_LEN) relate to the data size of a complete * TCP packet, equal to the total TCP packet length minus its TCP header size. Note * that a complete TCP packet MAY be fragmented in multiple Internet Protocol packets. ********************************************************************************************************* */ /* See Notes #1a & #1b. */ #define NET_TCP_DATA_LEN_MIN 0u #define NET_TCP_TOT_LEN_MIN (NET_TCP_HDR_SIZE_MIN + NET_TCP_DATA_LEN_MIN) #define NET_TCP_TOT_LEN_MAX (NET_IP_TOT_LEN_MAX - NET_IP_HDR_SIZE_MIN ) #define NET_TCP_DATA_LEN_MAX (NET_TCP_TOT_LEN_MAX - NET_TCP_HDR_SIZE_MIN) /*$PAGE*/ /* ********************************************************************************************************* * TCP SEGMENT SIZE DEFINES * * Note(s) : (1) (a) RFC # 879, Section 3 states that the TCP Maximum Segment Size "counts only * data octets in the segment, ... not the TCP header or the IP header". * * (b) RFC #1122, Section 4.2.2.6 requires that : * * (1) "The MSS value to be sent in an MSS option must be less than or equal to * * (A) MMS_R - 20 * * where MMS_R is the maximum size for a transport-layer message that can * be received." * * (2) "If an MSS option is not received at connection setup, TCP MUST assume a * default send MSS of 536 (576 - 40)." * * See also 'net_ip.h IP DATA/TOTAL LENGTH DEFINES Note #1'. ********************************************************************************************************* */ /* See Note #1. */ #define NET_TCP_MAX_SEG_SIZE_DFLT (NET_IP_MAX_DATAGRAM_SIZE_DFLT - NET_IP_HDR_SIZE_MIN - NET_TCP_HDR_SIZE_MIN) #define NET_TCP_MAX_SEG_SIZE_DFLT_RX NET_TCP_DATA_LEN_MAX /* See Note #1b1. */ #define NET_TCP_MAX_SEG_SIZE_DFLT_TX NET_TCP_MAX_SEG_SIZE_DFLT /* See Note #1b2. */ #define NET_TCP_MAX_SEG_SIZE_NONE 0u #define NET_TCP_MAX_SEG_SIZE_MIN NET_TCP_MAX_SEG_SIZE_DFLT #define NET_TCP_MAX_SEG_SIZE_MAX NET_TCP_DATA_LEN_MAX #define NET_TCP_SEG_LEN_MIN NET_TCP_DATA_LEN_MIN #define NET_TCP_SEG_LEN_MAX NET_TCP_DATA_LEN_MAX #define NET_TCP_SEG_LEN_SYNC 1u #define NET_TCP_SEG_LEN_FIN 1u #define NET_TCP_SEG_LEN_CLOSE NET_TCP_SEG_LEN_FIN #define NET_TCP_SEG_LEN_ACK 0u #define NET_TCP_SEG_LEN_RESET 0u #define NET_TCP_SEG_LEN_PROBE 0u #define NET_TCP_DATA_LEN_TX_SYNC 0u #define NET_TCP_DATA_LEN_TX_FIN 0u #define NET_TCP_DATA_LEN_TX_CLOSE NET_TCP_DATA_LEN_TX_FIN #define NET_TCP_DATA_LEN_TX_ACK 0u #define NET_TCP_DATA_LEN_TX_PROBE_NO_DATA 0u #define NET_TCP_DATA_LEN_TX_PROBE_DATA 1u #define NET_TCP_DATA_LEN_TX_RESET 0u #define NET_TCP_TX_PROBE_DATA 0x00u /* ********************************************************************************************************* * TCP WINDOW SIZE DEFINES * * Note(s) : (1) Although NO RFC specifies the absolute minimum TCP connection window size value allowed, * RFC #793, Section 3.7 'Data Communication : Managing the Window' states that for "the * window ... there is an assumption that this is related to the currently available data * buffer space available for this connection". ********************************************************************************************************* */ #define NET_TCP_WIN_SIZE_NONE 0u #define NET_TCP_WIN_SIZE_MIN NET_TCP_MAX_SEG_SIZE_MIN #define NET_TCP_WIN_SIZE_MAX DEF_INT_16U_MAX_VAL /*$PAGE*/ /* ********************************************************************************************************* * TCP HEADER OPTIONS DEFINES * * Note(s) : (1) See the following RFC's for TCP options summary : * * (a) RFC # 793, Section 3.1 'Header Format : Options' * (b) RFC #1122; Sections 4.2.2.5, 4.2.2.6 * * (2) TCP option types are encoded in the first octet for each TCP option as follows : * * -------- * | TYPE | * -------- * * The TCP option type value determines the TCP option format : * * (a) The following TCP option types are single-octet TCP options -- i.e. the option type * octet is the ONLY octet for the TCP option. * * (1) TYPE = 0 End of Options List * (2) TYPE = 1 No Operation * * * (b) All other TCP options MUST be multi-octet TCP options (see RFC #1122, Section 4.2.2.5) : * * ------------------------------ * | TYPE | LEN | TCP OPT | * ------------------------------ * * where * TYPE Indicates the specific TCP option type * LEN Indicates the total TCP option length, in octets, including * the option type & the option length octets * TCP OPT Additional TCP option octets, if any, that contain the remaining * TCP option information * * The following TCP option types are multi-octet TCP options where the option's second * octet specify the total TCP option length, in octets, including the option type & the * option length octets : * * (1) TYPE = 2 Maximum Segment Size See RFC # 793, Section 3.1 'Header Format : * Options : Maximum Segment Size'; * RFC #1122, Section 4.2.2.6; * RFC # 879, Section 3 * * (2) TYPE = 3 Window Scale See 'net_tcp.h Note #1c1' * (3) TYPE = 4 SACK Allowed See 'net_tcp.h Note #1c2' * (4) TYPE = 5 SACK Option See 'net_tcp.h Note #1c2' * (5) TYPE = 6 Echo Request See 'net_tcp.h Note #1c3' * (6) TYPE = 7 Echo Reply See 'net_tcp.h Note #1c3' * (7) TYPE = 8 Timestamp See 'net_tcp.h Note #1c4' * * (3) TCP header allows for a maximum option list length of 40 octets : * * NET_TCP_HDR_OPT_SIZE_MAX = NET_TCP_HDR_SIZE_MAX - NET_TCP_HDR_SIZE_MIN * * = 60 - 20 * * = 40 * * (4) 'NET_TCP_OPT_SIZE' MUST be pre-defined PRIOR to all definitions that require TCP option * size data type. ********************************************************************************************************* */ /*$PAGE*/ #define NET_TCP_HDR_OPT_END_LIST 0u #define NET_TCP_HDR_OPT_NOP 1u #define NET_TCP_HDR_OPT_MAX_SEG_SIZE 2u #define NET_TCP_HDR_OPT_WIN_SCALE 3u #define NET_TCP_HDR_OPT_SACK_PERMIT 4u #define NET_TCP_HDR_OPT_SACK 5u #define NET_TCP_HDR_OPT_ECHO_REQ 6u #define NET_TCP_HDR_OPT_ECHO_REPLY 7u #define NET_TCP_HDR_OPT_TS 8u #define NET_TCP_HDR_OPT_PAD NET_TCP_HDR_OPT_END_LIST #define NET_TCP_HDR_OPT_LEN_END_LIST 1u #define NET_TCP_HDR_OPT_LEN_NOP 1u #define NET_TCP_HDR_OPT_LEN_MAX_SEG_SIZE 4u #define NET_TCP_HDR_OPT_LEN_WIN_SCALE 3u #define NET_TCP_HDR_OPT_LEN_SACK_PERMIT 2u #define NET_TCP_HDR_OPT_LEN_ECHO_REQ 6u #define NET_TCP_HDR_OPT_LEN_ECHO_REPLY 6u #define NET_TCP_HDR_OPT_LEN_TS 10u #define NET_TCP_HDR_OPT_LEN_SACK_MIN 6u #define NET_TCP_HDR_OPT_LEN_SACK_MAX 38u #define NET_TCP_HDR_OPT_LEN_MIN 1u #define NET_TCP_HDR_OPT_LEN_MIN_LEN 2u #define NET_TCP_HDR_OPT_LEN_MAX 38u typedef CPU_INT32U NET_TCP_OPT_SIZE; /* TCP opt size data type (see Note #4). */ #define NET_TCP_HDR_OPT_SIZE_WORD (sizeof(NET_TCP_OPT_SIZE)) #define NET_TCP_HDR_OPT_SIZE_MAX (NET_TCP_HDR_SIZE_MAX - NET_TCP_HDR_SIZE_MIN) #define NET_TCP_HDR_OPT_NBR_MIN 0u #define NET_TCP_HDR_OPT_NBR_MAX (NET_TCP_HDR_OPT_SIZE_MAX / NET_TCP_HDR_OPT_SIZE_WORD) #define NET_TCP_HDR_OPT_IX NET_TCP_HDR_SIZE_MIN /*$PAGE*/ /* ********************************************************************************************************* * TCP OPTION CONFIGURATION TYPE DEFINES * * Note(s) : (1) NET_TCP_OPT_CFG_TYPE_&&& #define values specifically chosen as ASCII representations of * the TCP option configuration types. Memory displays of TCP option configuration buffers * will display the TCP option configuration TYPEs with their chosen ASCII names. ********************************************************************************************************* */ /* ---------------- TCP OPT CFG TYPES ----------------- */ #if (CPU_CFG_ENDIAN_TYPE == CPU_ENDIAN_TYPE_BIG) #define NET_TCP_OPT_CFG_TYPE_NONE 0x4E4F4E45u /* "NONE" in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_MAX_SEG_SIZE 0x4D535320u /* "MSS " in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_WIN_SCALE 0x57494E20u /* "WIN " in ASCII (see 'net_tcp.h Note #1c1'). */ #define NET_TCP_OPT_CFG_TYPE_SACK_PERMIT 0x53434B50u /* "SCKP" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_SACK 0x5341434Bu /* "SACK" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REQ 0x45524551u /* "EREQ" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REPLY 0x4543484Fu /* "ECHO" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_TS 0x54532020u /* "TS " in ASCII (see 'net_tcp.h Note #1c4'). */ #else #if (CPU_CFG_DATA_SIZE == CPU_WORD_SIZE_32) #define NET_TCP_OPT_CFG_TYPE_NONE 0x454E4F4Eu /* "NONE" in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_MAX_SEG_SIZE 0x2053534Du /* "MSS " in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_WIN_SCALE 0x204E4957u /* "WIN " in ASCII (see 'net_tcp.h Note #1c1'). */ #define NET_TCP_OPT_CFG_TYPE_SACK_PERMIT 0x504B4353u /* "SCKP" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_SACK 0x4B434153u /* "SACK" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REQ 0x51455245u /* "EREQ" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REPLY 0x4F484345u /* "ECHO" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_TS 0x20205354u /* "TS " in ASCII (see 'net_tcp.h Note #1c4'). */ #elif (CPU_CFG_DATA_SIZE == CPU_WORD_SIZE_16) #define NET_TCP_OPT_CFG_TYPE_NONE 0x4F4E454Eu /* "NONE" in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_MAX_SEG_SIZE 0x534D2053u /* "MSS " in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_WIN_SCALE 0x4957204Eu /* "WIN " in ASCII (see 'net_tcp.h Note #1c1'). */ #define NET_TCP_OPT_CFG_TYPE_SACK_PERMIT 0x4353504Bu /* "SCKP" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_SACK 0x41534B43u /* "SACK" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REQ 0x52455145u /* "EREQ" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REPLY 0x43454F48u /* "ECHO" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_TS 0x53542020u /* "TS " in ASCII (see 'net_tcp.h Note #1c4'). */ #else /* Dflt CPU_WORD_SIZE_08. */ #define NET_TCP_OPT_CFG_TYPE_NONE 0x4E4F4E45u /* "NONE" in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_MAX_SEG_SIZE 0x4D535320u /* "MSS " in ASCII. */ #define NET_TCP_OPT_CFG_TYPE_WIN_SCALE 0x57494E20u /* "WIN " in ASCII (see 'net_tcp.h Note #1c1'). */ #define NET_TCP_OPT_CFG_TYPE_SACK_PERMIT 0x53434B50u /* "SCKP" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_SACK 0x5341434Bu /* "SACK" in ASCII (see 'net_tcp.h Note #1c2'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REQ 0x45524551u /* "EREQ" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_ECHO_REPLY 0x4543484Fu /* "ECHO" in ASCII (see 'net_tcp.h Note #1c3'). */ #define NET_TCP_OPT_CFG_TYPE_TS 0x54532020u /* "TS " in ASCII (see 'net_tcp.h Note #1c4'). */ #endif #endif /*$PAGE*/ /* ********************************************************************************************************* * TCP CONNECTION TIMEOUT DEFINES * * Note(s) : (1) (a) (1) RFC #1122, Section 4.2.2.13 'DISCUSSION' states that "the graceful close algorithm * of TCP requires that the connection state remain defined on (at least) one end of * the connection, for a timeout period of 2xMSL ... During this period, the (remote * socket, local socket) pair that defines the connection is busy and cannot be reused". * * (2) The following sections reiterate that the TIME-WAIT state timeout scalar is two * maximum segment lifetimes (2 MSL) : * * (A) RFC #793, Section 3.9 'Event Processing : SEGMENT ARRIVES : * Check Sequence Number : TIME-WAIT STATE' * (B) RFC #793, Section 3.9 'Event Processing : SEGMENT ARRIVES : * Check FIN Bit : TIME-WAIT STATE' * * (b) (1) RFC #793, Section 3.3 'Sequence Numbers : Knowing When to Keep Quiet' states that * "the Maximum Segment Lifetime (MSL) is ... to be 2 minutes. This is an engineering * choice, and may be changed if experience indicates it is desirable to do so". * * (2) Microsoft Corporation's Windows XP defaults MSL to 15 seconds. ********************************************************************************************************* */ /* Max seg timeout (see Note #1b) : */ #define NET_TCP_CONN_TIMEOUT_MAX_SEG_MIN_SEC ( 0u ) /* ... min = 0 seconds */ #define NET_TCP_CONN_TIMEOUT_MAX_SEG_MAX_SEC ( 2u * DEF_TIME_NBR_SEC_PER_MIN) /* ... max = 2 minutes */ #define NET_TCP_CONN_TIMEOUT_MAX_SEG_DFLT_SEC ( 15u ) /* ... dflt = 15 seconds */ #define NET_TCP_CONN_TIMEOUT_MAX_SEG_SCALAR 2u /* ... scalar (see Note #1a). */ #define NET_TCP_CONN_TIMEOUT_CONN_DFLT_SEC (120u * DEF_TIME_NBR_SEC_PER_MIN) /* Dflt conn timeout = 120 minutes */ #define NET_TCP_CONN_TIMEOUT_USER_DFLT_SEC ( 30u * DEF_TIME_NBR_SEC_PER_MIN) /* Dflt user timeout = 30 minutes */ /*$PAGE*/ /* ********************************************************************************************************* * TCP CONNECTION STATES * * Note(s) : (1) See the following RFC's for TCP state machine summary : * * (a) RFC # 793; Sections 3.2, 3.4, 3.5, 3.9 * (b) RFC #1122; Sections 4.2.2.8, 4.2.2.10, 4.2.2.11, 4.2.2.13, 4.2.2.18, 4.2.2.20 * * (2) (a) #### Additional closing-data-available state used for closing connections to allow the * application layer to receive any remaining data. * * See also 'net_tcp.c NetTCP_RxPktConnHandlerFinWait1() Note #2f5A2', * 'net_tcp.c NetTCP_RxPktConnHandlerFinWait2() Note #2f5B', * 'net_tcp.c NetTCP_RxPktConnHandlerClosing() Note #2d2B2a1B', * & 'net_tcp.c NetTCP_RxPktConnHandlerLastAck() Note #2d2A1b'. ********************************************************************************************************* */ #define NET_TCP_CONN_STATE_NONE 0u #define NET_TCP_CONN_STATE_FREE 1u #define NET_TCP_CONN_STATE_CLOSED 10u #define NET_TCP_CONN_STATE_LISTEN 20u #define NET_TCP_CONN_STATE_SYNC_RXD 30u #define NET_TCP_CONN_STATE_SYNC_RXD_PASSIVE 31u #define NET_TCP_CONN_STATE_SYNC_RXD_ACTIVE 32u #define NET_TCP_CONN_STATE_SYNC_TXD 35u #define NET_TCP_CONN_STATE_CONN 40u #define NET_TCP_CONN_STATE_FIN_WAIT_1 50u #define NET_TCP_CONN_STATE_FIN_WAIT_2 51u #define NET_TCP_CONN_STATE_CLOSING 52u #define NET_TCP_CONN_STATE_TIME_WAIT 53u #define NET_TCP_CONN_STATE_CLOSE_WAIT 55u #define NET_TCP_CONN_STATE_LAST_ACK 56u #define NET_TCP_CONN_STATE_CLOSING_DATA_AVAIL 59u /* See Note #2a. */ /* ********************************************************************************************************* * TCP CONNECTION QUEUE STATES ********************************************************************************************************* */ #define NET_TCP_RX_Q_STATE_NONE 0u #define NET_TCP_RX_Q_STATE_CLOSED 100u #define NET_TCP_RX_Q_STATE_CLOSING 101u #define NET_TCP_RX_Q_STATE_SYNC 110u #define NET_TCP_RX_Q_STATE_CONN 111u #define NET_TCP_TX_Q_STATE_NONE 0u #define NET_TCP_TX_Q_STATE_CLOSED 200u #define NET_TCP_TX_Q_STATE_CLOSING 201u #define NET_TCP_TX_Q_STATE_SYNC 210u #define NET_TCP_TX_Q_STATE_CONN 211u #define NET_TCP_TX_Q_STATE_SUSPEND 215u #define NET_TCP_TX_Q_STATE_CLOSED_SUSPEND 220u #define NET_TCP_TX_Q_STATE_CLOSING_SUSPEND 221u /*$PAGE*/ /* ********************************************************************************************************* * TCP CONNECTION CODE DEFINES **************
上传时间： 2015-11-22
上传用户：the same kong
#include<reg51.h> #define uchar unsigned char #define uint unsigned int uint i,j; sbit dula=P2^6; sbit wela=P2^7; uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d, 0x7d,0x07,0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71}; void main() { j=0; i=0; TMOD=0X01; TH0=(65536-50000)/256; TL0=(65536-50000)%6; EA=1; ET0=1; TR0=1; while(1); } void time0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%6; i++; if(i==15) { P0=table[j]; dula=1; dula=0; P0=0XC0; wela=1; wela=0; j++; i=0; if(j==16) { j=0; } } }
标签： 用定时器以间隔500MS在6位数码管上依次显示0、1、 2、3….C、D、E、F，重复。
上传时间： 2016-02-11
上传用户：娇纵Pamper
I=imread('fig1.jpg');%从D盘名为myimages的文件夹中读取。格式为jpg的图像文件chost J=imnoise(I,'salt & pepper',0.02);%给图像加入均值为0，方差为0.02的淑盐噪声 subplot(2,4,1); imshow(I); title('原始图像'); subplot(2,4,2); imshow(J); title('加入椒盐噪声之后的图像'); %h=ones(3,3)/9; %产生3 × 3的全1数组 %B=conv2(J,h); %卷积运算 %采用MATLAB中的函数对噪声干扰的图像进行滤波 Q=wiener2(J,[3 3]); %对加噪图像进行二维自适应维纳滤波 P=filter2(fspecial('average',3),J)/255; %均值滤波模板尺寸为3 K1=medfilt2(J,[3 3]); %进行3 × 3模板的中值滤波 K2= medfilt2(J,[5 5]); %进行5 × 5模板的中值滤波 K3= medfilt2(J,[7 7]); %进行7 × 7模板的中值滤波 K4= medfilt2(J,[9 9]); %进行9 × 9模板的中值滤波 %显示滤波后的图像及标题 subplot(2,4,3); imshow(Q); title('3 × 3模板维纳滤波后的图像'); subplot(2,4,4); imshow(P); title('3 × 3模板均值滤波后的图像'); subplot(2,4,5); imshow(K1); title('3 × 3模板的中值滤波的图像'); subplot(2,4,6); imshow(K2); title('5 × 5模板的中值滤波的图像'); subplot(2,4, 7); imshow(K3); title('7 × 7模板的中值滤波的图像'); subplot(2,4,8); imshow(K4); title('9 × 9模板的中值滤波的图像');
上传时间： 2016-06-02
上传用户：wxcr_1
实验源代码 //Warshall.cpp #include<stdio.h> void warshall(int k,int n) { int i , j, t; int temp[20][20]; for(int a=0;a<k;a++) { printf("请输入矩阵第%d 行元素:",a); for(int b=0;b<n;b++) { scanf ("%d",&temp[a][b]); } } for(i=0;i<k;i++){ for( j=0;j<k;j++){ if(temp[ j][i]==1) { for(t=0;t<n;t++) { temp[ j][t]=temp[i][t]||temp[ j][t]; } } } } printf("可传递闭包关系矩阵是:\n"); for(i=0;i<k;i++) { for( j=0;j<n;j++) { printf("%d", temp[i][ j]); } printf("\n"); } } void main() { printf("利用 Warshall 算法求二元关系的可传递闭包\n"); void warshall(int,int); int k , n; printf("请输入矩阵的行数 i: "); scanf("%d",&k); 四川大学实验报告 printf("请输入矩阵的列数 j: "); scanf("%d",&n); warshall(k,n); }
上传时间： 2016-06-27
上传用户：梁雪文以
批处理感知器算法的代码matlab w1=[1,0.1,1.1;1,6.8,7.1;1,-3.5,-4.1;1,2.0,2.7;1,4.1,2.8;1,3.1,5.0;1,-0.8,-1.3; 1,0.9,1.2;1,5.0,6.4;1,3.9,4.0]; w2=[1,7.1,4.2;1,-1.4,-4.3;1,4.5,0.0;1,6.3,1.6;1,4.2,1.9;1,1.4,-3.2;1,2.4,-4.0; 1,2.5,-6.1;1,8.4,3.7;1,4.1,-2.2]; w3=[1,-3.0,-2.9;1,0.5,8.7;1,2.9,2.1;1,-0.1,5.2;1,-4.0,2.2;1,-1.3,3.7;1,-3.4,6.2; 1,-4.1,3.4;1,-5.1,1.6;1,1.9,5.1]; figure; plot(w3(:,2),w3(:,3),'ro'); hold on; plot(w2(:,2),w2(:,3),'b+'); W=[w2;-w3];%增广样本规范化 a=[0,0,0]; k=0;%记录步数 n=1; y=zeros(size(W,2),1);%记录错分的样本 while any(y<=0) k=k+1; y=a*transpose(W);%记录错分的样本 a=a+sum(W(find(y<=0),:));%更新a if k >= 250 break end end if k<250 disp(['a为：',num2str(a)]) disp(['k为：',num2str(k)]) else disp(['在250步以内没有收敛，终止']) end %判决面：x2=-a2*x1/a3-a1/a3 xmin=min(min(w1(:,2)),min(w2(:,2))); xmax=max(max(w1(:,2)),max(w2(:,2))); x=xmin-1:xmax+1;%(xmax-xmin): y=-a(2)*x/a(3)-a(1)/a(3); plot(x,y)
上传时间： 2016-11-07
上传用户：a1241314660
/****************temic*********t5557***********************************/ #include <at892051.h> #include <string.h> #include <intrins.h> #include <stdio.h> #define uchar unsigned char #define uint unsigned int #define ulong unsigned long //STC12C2051AD的SFR定义 sfr WDT_CONTR = 0xe1;//stc2051的看门狗?????? /**********全局常量************/ //写卡的命令 #define write_command0 0//写密码 #define write_command1 1//写配置字 #define write_command2 2//密码写数据 #define write_command3 3//唤醒 #define write_command4 4//停止命令 #define TRUE 1 #define FALSE 0 #define OK 0 #define ERROR 255 //读卡的时间参数us #define ts_min 250//270*11.0592/12=249//取近似的整数 #define ts_max 304//330*11.0592/12=304 #define t1_min 73//90*11.0592/12=83:-10调整 #define t1_max 156//180*11.0592/12=166 #define t2_min 184//210*11.0592/12=194 #define t2_max 267//300*11.0592/12=276 //***********不采用中断处理:采用查询的方法读卡时关所有中断****************/ sbit p_U2270B_Standby = P3^5;//p_U2270B_Standby PIN=13 sbit p_U2270B_CFE = P3^3;//p_U2270B_CFE PIN=6 sbit p_U2270B_OutPut = P3^7;//p_U2270B_OutPut PIN=2 sbit wtd_sck = P1^7;//SPI总线 sbit wtd_si = P1^3; sbit wtd_so = P1^2; sbit iic_data = P1^2;//lcd IIC sbit iic_clk = P1^7; sbit led_light = P1^6;//测试绿灯 sbit led_light1 = P1^5;//测试红灯 sbit led_light_ok = P1^1;//读卡成功标志 sbit fengmingqi = P1^5; /***********全局变量************************************/ uchar data Nkey_a[4] = {0xA0, 0xA1, 0xA2, 0xA3};//初始密码 //uchar idata card_snr[4]; //配置字 uchar data bankdata[28] = {1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7}; //存储卡上用户数据(1-7)7*4=28 uchar data cominceptbuff[6] = {1,2,3,4,5,6};//串口接收数组ram uchar command; //第一个命令 uchar command1;// //uint temp; uchar j,i; uchar myaddr = 8; //uchar ywqz_count,time_count; //ywqz jishu: uchar bdata DATA; sbit BIT0 = DATA^0; sbit BIT1 = DATA^1; sbit BIT2 = DATA^2; sbit BIT3 = DATA^3; sbit BIT4 = DATA^4; sbit BIT5 = DATA^5; sbit BIT6 = DATA^6; sbit BIT7 = DATA^7; uchar bdata DATA1; sbit BIT10 = DATA1^0; sbit BIT11 = DATA1^1; sbit BIT12 = DATA1^2; sbit BIT13 = DATA1^3; sbit BIT14 = DATA1^4; sbit BIT15 = DATA1^5; sbit BIT16 = DATA1^6; sbit BIT17 = DATA1^7; bit i_CurrentLevel;//i_CurrentLevel BIT 00H(Saves current level of OutPut pin of U2270B) bit timer1_end; bit read_ok = 0; //缓存定时值,因用同一个定时器 union HLint { uint W; struct { uchar H;uchar L; } B; };//union HLint idata a union HLint data a; //缓存定时值,因用同一个定时器 union HLint0 { uint W; struct { uchar H; uchar L; } B; };//union HLint idata a union HLint0 data b; /**********************函数原型*****************/ //读写操作 void f_readcard(void);//全部读出1~7 AOR唤醒 void f_writecard(uchar x);//根据命令写不同的内容和操作 void f_clearpassword(void);//清除密码 void f_changepassword(void);//修改密码 //功能子函数 void write_password(uchar data *data p);//写初始密码或数据 void write_block(uchar x,uchar data *data p);//不能用通用指针 void write_bit(bit x);//写位 /*子函数区*****************************************************/ void delay_2(uint x) //延时,时间x*10us@12mhz,最小20us@12mhz { x--; x--; while(x) { _nop_(); _nop_(); x--; } _nop_();//WDT_CONTR=0X3C;不能频繁的复位 _nop_(); } ///////////////////////////////////////////////////////////////////// void initial(void) { SCON = 0x50; //串口方式1,允许接收 //SCON =0x50; //01010000B:10位异步收发,波特率可变,SM2=0不用接收到有效停止位才RI=1, //REN=1允许接收 TMOD = 0x21; //定时器1 定时方式2(8位),定时器0 定时方式1(16位) TCON = 0x40; //设定时器1 允许开始计时(IT1=1) TH1 = 0xfD; //FB 18.432MHz 9600 波特率 TL1 = 0xfD; //fd 11.0592 9600 IE = 0X90; //EA=ES=1 TR1 = 1; //启动定时器 WDT_CONTR = 0x3c;//使能看门狗 p_U2270B_Standby = 0;//单电源 PCON = 0x00; IP = 0x10;//uart you xian XXXPS PT1 PX1 PT0 PX0 led_light1 = 1; led_light = 0; p_U2270B_OutPut = 1; } /************************************************/ void f_readcard()//读卡 { EA = 0;//全关,防止影响跳变的定时器计时 WDT_CONTR = 0X3C;//喂狗 p_U2270B_CFE = 1;// delay_2(232); //>2.5ms /* // aor 用唤醒功能来防碰撞 p_U2270B_CFE = 0; delay_2(18);//start gap>150us write_bit(1);//10=操作码读0页 write_bit(0); write_password(&bankdata[24]);//密码block7 p_U2270B_CFE =1 ;// delay_2(516);//编程及确认时间5.6ms */ WDT_CONTR = 0X3C;//喂狗 led_light = 0; b.W = 0; while(!(read_ok == 1)) { //while(p_U2270B_OutPut);//等一个稳定的低电平?超时判断? while(!p_U2270B_OutPut);//等待上升沿的到来同步信号检测1 TR0 = 1; //deng xia jiang while(p_U2270B_OutPut);//等待下降沿 TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1;//定时器晚启动10个周期 //同步头 if((324 < a.W) && (a.W < 353)) ;//检测同步信号1 else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } //等待上升沿 while(!p_U2270B_OutPut); TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1;//b.N1<<=8; if(a.B.L < 195);//0.5p else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } //读0~7块的数据 for(j = 0;j < 28;j++) { //uchar i; for(i = 0;i < 16;i++)//8个位 { //等待下降沿的到来 while(p_U2270B_OutPut); TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1; if(t2_max < a.W/*)&&(a.W < t2_max)*/)//1P { b.W >>= 2;//先左移再赋值 b.B.L += 0xc0; i++; } else if(t1_min < a.B.L/*)&&(a.B.L < t1_max)*/)//0.5p { b.W >>= 1; b.B.L += 0x80; } else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } i++; while(!p_U2270B_OutPut);//上升 TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1; if(t2_min < a.W/*)&&(a.W < t2_max)*/)//1P { b.W >>= 2; i++; } else if(t1_min < a.B.L/*a.W)&&(a.B.L < t1_max)*/)//0.5P //else if(!(a.W==0)) { b.W >>= 1; //temp+=0x00; //led_light1=0;led_light=1;delay_2(40000); } else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } i++; } //取出奇位 DATA = b.B.L; BIT13 = BIT7; BIT12 = BIT5; BIT11 = BIT3; BIT10 = BIT1; DATA = b.B.H; BIT17 = BIT7; BIT16 = BIT5; BIT15 = BIT3; BIT14 = BIT1; bankdata[j] = DATA1; } read_ok = 1;//读卡完成了 read_error: _nop_(); } } /***************************************************/ void f_writecard(uchar x)//写卡 { p_U2270B_CFE = 1; delay_2(232); //>2.5ms //psw=0 standard write if (x == write_command0)//写密码:初始化密码 { uchar i; uchar data *data p; p = cominceptbuff; p_U2270B_CFE = 0; delay_2(31);//start gap>330us write_bit(1);//写操作码1:10 write_bit(0);//写操作码0 write_bit(0);//写锁定位0 for(i = 0;i < 35;i++) { write_bit(1);//写数据位1 } p_U2270B_CFE = 1; led_light1 = 0; led_light = 1; delay_2(40000);//测试使用 //write_block(cominceptbuff[4],p); p_U2270B_CFE = 1; bankdata[20] = cominceptbuff[0];//密码存入 bankdata[21] = cominceptbuff[1]; bankdata[22] = cominceptbuff[2]; bankdata[23] = cominceptbuff[3]; } else if (x == write_command1)//配置卡参数:初始化 { uchar data *data p; p = cominceptbuff; write_bit(1);//写操作码1:10 write_bit(0);//写操作码0 write_bit(0);//写锁定位0 write_block(cominceptbuff[4],p); p_U2270B_CFE= 1; } //psw=1 pssword mode else if(x == write_command2) //密码写数据 { uchar data*data p; p = &bankdata[24]; write_bit(1);//写操作码1:10 write_bit(0);//写操作码0 write_password(p);//发口令 write_bit(0);//写锁定位0 p = cominceptbuff; write_block(cominceptbuff[4],p);//写数据 } else if(x == write_command3)//aor //唤醒 { //cominceptbuff[1]操作码10 X xxxxxB uchar data *data p; p = cominceptbuff; write_bit(1);//10 write_bit(0); write_password(p);//密码 p_U2270B_CFE = 1;//此时数据不停的循环传出 } else //停止操作码 { write_bit(1);//11 write_bit(1); p_U2270B_CFE = 1; } p_U2270B_CFE = 1; delay_2(560);//5.6ms } /************************************/ void f_clearpassword()//清除密码 { uchar data *data p; uchar i,x; p = &bankdata[24];//原密码 p_U2270B_CFE = 0; delay_2(18);//start gap>150us //操作码10:10xxxxxxB write_bit(1); write_bit(0); for(x = 0;x < 4;x++)//发原密码 { DATA = *(p++); for(i = 0;i < 8;i++) { write_bit(BIT0); DATA >>= 1; } } write_bit(0);//锁定位0:0 p = &cominceptbuff[0]; write_block(0x00,p);//写新配置参数:pwd=0 //密码无效:即清除密码 DATA = 0x00;//停止操作码00000000B for(i = 0;i < 2;i++) { write_bit(BIT7); DATA <<= 1; } p_U2270B_CFE = 1; delay_2(560);//5.6ms } /*********************************/ void f_changepassword()//修改密码 { uchar data *data p; uchar i,x,addr; addr = 0x07;//block7 p = &Nkey_a[0];//原密码 DATA = 0x80;//操作码10:10xxxxxxB for(i = 0;i < 2;i++) { write_bit(BIT7); DATA <<= 1; } for(x = 0;x < 4;x++)//发原密码 { DATA = *(p++); for(i = 0;i < 8;i++) { write_bit(BIT7); DATA >>= 1; } } write_bit(0);//锁定位0:0 p = &cominceptbuff[0]; write_block(0x07,p);//写新密码 p_U2270B_CFE = 1; bankdata[24] = cominceptbuff[0];//密码存入 bankdata[25] = cominceptbuff[1]; bankdata[26] = cominceptbuff[2]; bankdata[27] = cominceptbuff[3]; DATA = 0x00;//停止操作码00000000B for(i = 0;i < 2;i++) { write_bit(BIT7); DATA <<= 1; } p_U2270B_CFE = 1; delay_2(560);//5.6ms } /***************************子函数***********************************/ void write_bit(bit x)//写一位 { if(x) { p_U2270B_CFE = 1; delay_2(32);//448*11.0592/120=42延时448us p_U2270B_CFE = 0; delay_2(28);//280*11.0592/120=26写1 } else { p_U2270B_CFE = 1; delay_2(92);//192*11.0592/120=18 p_U2270B_CFE = 0; delay_2(28);//280*11.0592/120=26写0 } } /*******************写一个block*******************/ void write_block(uchar addr,uchar data *data p) { uchar i,j; for(i = 0;i < 4;i++)//block0数据 { DATA = *(p++); for(j = 0;j < 8;j++) { write_bit(BIT0); DATA >>= 1; } } DATA = addr <<= 5;//0地址 for(i = 0;i < 3;i++) { write_bit(BIT7); DATA <<= 1; } } /*************************************************/ void write_password(uchar data *data p) { uchar i,j; for(i = 0;i < 4;i++)// { DATA = *(p++); for(j = 0;j < 8;j++) { write_bit(BIT0); DATA >>= 1; } } } /*************************************************/ void main() { initial(); TI = RI = 0; ES = 1; EA = 1; delay_2(28); //f_readcard(); while(1) { f_readcard(); //读卡 f_writecard(command1); //写卡 f_clearpassword(); //清除密码 f_changepassword(); //修改密码 } }
标签： 12345
上传时间： 2017-10-20
上传用户：my_lcs
已知系统函数为H(z)=1/[(1-0.2z^-1)(1-0.3z^-1)(1+0.4z^-1)]。试用长除法求h(n)的6点输出。 答案：clc;clear all;b=1;a=poly([0.2,0.3,-0.4]);x=deconv([1,zeros(1,6+4-1-1)],a)
上传时间： 2017-10-21
上传用户：zhouhua
很强大的搜索工具，可以极速搜索电脑中的资料，比系统自带的搜索工具强1万倍。
标签： Everything 搜索
上传时间： 2017-12-24
上传用户：shang1775
