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Файл:(ARM).Porting TCP-IP programmer's guide.Ver 1.4.pdf
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- •Preface
- •About this book
- •Intended audience
- •Using this book
- •Typographical conventions
- •Further reading
- •Feedback
- •Feedback on ARM TCP/IP
- •Feedback on this book
- •Introduction
- •1.1 A typical embedded networking stack
- •1.2 What is PPP?
- •1.3 ARM TCP/IP requirements
- •1.3.1 Memory requirements
- •1.3.2 CPU requirements
- •1.3.3 Operating system requirements
- •1.4 ARM PPP requirements
- •1.4.1 Line management functions
- •1.4.2 Static memory
- •1.4.3 Dynamic memory
- •1.4.4 Periodic clock tick
- •1.5 Example package directories
- •1.6 Sample programs
- •TCP/IP Porting
- •2.1 Porting procedure
- •2.2 Portable and nonportable files
- •2.2.1 Portable files
- •2.2.2 Nonportable files
- •2.3 Creating the IP port file
- •2.3.1 Standard macros and definitions
- •2.3.2 CPU architecture
- •2.3.4 Debugging aids
- •2.3.5 Timers and multitasking
- •2.3.6 Stack features and options
- •2.4 Coding the glue layer
- •2.4.1 Task control
- •2.5 Specifying IP addresses
- •2.5.1 Porting programmer IP issues
- •2.5.2 End user IP issues
- •2.6 Testing the TCP/IP port
- •PPP Porting
- •3.1 Porting procedure
- •3.2 Porting PPP
- •3.2.1 Source files
- •3.2.2 Compiling PPP
- •3.2.3 Entry points and support calls
- •3.3 Testing PPP
- •3.3.1 Loopback
- •3.3.2 Client connection
- •3.3.3 Server connection
- •3.3.4 Abrupt disconnect
- •3.3.5 Multilink test
- •TCP/IP API Functions
- •4.2.1 cksum()
- •4.2.2 dprintf() and initmsg()
- •4.2.3 dtrap()
- •4.2.4 ENTER_CRIT_SECTION() and EXIT_CRIT_SECTION()
- •4.2.5 LOCK_NET_RESOURCE() and UNLOCK_NET_RESOURCE()
- •4.2.6 npalloc()
- •4.2.7 npfree()
- •4.2.8 panic()
- •4.2.9 prep_ifaces()
- •4.2.10 tcp_sleep()
- •4.2.11 tcp_wakeup()
- •4.3 Network interfaces
- •4.3.1 The NET structure
- •4.3.2 n_close()
- •4.3.3 n_init()
- •4.3.4 n_reg_type()
- •4.3.5 n_stats()
- •4.3.6 pkt_send()
- •4.3.7 raw_send()
- •PPP API Functions
- •5.2.1 _ALLOC() functions
- •5.2.2 ConPrintf()
- •5.2.3 _FREE() functions
- •5.2.4 get_secret()
- •5.2.5 ppp_port_init()
- •5.3 Serial line drivers
- •5.3.1 ln_connect()
- •5.3.2 ln_getc()
- •5.3.3 ln_hangup()
- •5.3.4 ln_putc()
- •5.3.5 ln_speed()
- •5.3.6 ln_state()
- •5.3.7 ln_write()
- •5.4 PPP entry points
- •5.4.1 lcp_lowerdown()
- •5.4.2 lcp_lowerup()
- •5.4.3 ppp_input()
- •5.4.4 ppp_timeisup()
- •5.4.5 prep_ppp()
- •Modem Functions
- •6.1 dialer.c
- •6.1.1 dial()
- •6.1.2 dial_check()
- •6.1.3 dialer_status()
- •6.1.4 modem_cmd()
- •6.1.5 modem_connect()
- •6.1.6 modem_getc()
- •6.1.7 modem_gets()
- •6.1.8 modem_hangup()
- •6.1.9 modem_init()
- •6.1.10 modem_lstate()
- •6.1.11 modem_putc()
- •6.1.12 modem_reset()
- •6.1.13 modem_speed()
- •6.1.14 modem_state()
- •6.1.15 modem_write()
- •6.2 login.c
- •6.2.1 do_script()
- •6.2.2 login()
- •6.2.3 log_input()
- •6.2.4 log_output()
- •6.2.5 logserver()
- •6.3 mdmport.c
- •6.3.1 dial_delay()
- •6.3.2 hangup()
- •6.3.3 modem_clr_dtr() and modem_set_dtr()
- •6.3.4 modem_DCD()
- •6.3.5 modem_portstat()
- •DHCP Client Functions
- •7.1 DHCP client functions
- •7.1.1 dhc_init()
- •7.1.2 dhc_discover()
- •7.1.3 dhc_set_callback()
- •7.1.4 dhc_halt()
- •7.1.5 dhc_second()
- •Low-overhead UDP Functions
- •8.1 UDP functions
- •8.1.1 udp_alloc()
- •8.1.2 udp_close()
- •8.1.3 udp_open()
- •8.1.4 udp_send()
- •8.1.5 udp_socket()
- •Sockets
- •9.1 ARM implementation of sockets
- •9.2 Socket API reference
- •9.2.1 t_accept()
- •9.2.2 t_bind()
- •9.2.3 t_connect()
- •9.2.4 t_errno()
- •9.2.5 t_getpeername()
- •9.2.6 t_getsockname()
- •9.2.7 t_getsockopt()
- •9.2.8 t_listen()
- •9.2.9 t_recv() and t_recvfrom()
- •9.2.10 t_select()
- •9.2.11 t_send() and t_sendto()
- •9.2.12 t_setsockopt()
- •9.2.13 t_shutdown()
- •9.2.14 t_socket()
- •9.2.15 t_socketclose()
- •ARM-specific Functions
- •10.1 ARM directories
- •10.1.1 armthumb
- •10.2 cksum.s
- •10.3 clock.c
- •10.3.1 clock_init()
- •10.3.2 clock_c()
- •10.4 delay.s
- •10.5 dtrap.s
- •10.6 except.s
- •10.7.1 ENTER_CRIT_SECTION() and EXIT_CRIT_SECTION()
- •10.7.2 irqDispatch()
- •10.7.3 irq_Enable() and irq_Disable()
- •10.7.4 irqInit()
- •10.8 lswap.s
- •10.10 olicom.c
- •10.11 pcmcia.c
- •10.12 stack.s
- •10.13 uart.c description
- •10.14 uart.c ring buffer management functions
- •10.14.1 ring_add()
- •10.14.2 ring_avail()
- •10.14.3 ring_new()
- •10.14.4 ring_remove()
- •10.14.5 ring_space()
- •10.15 uart.c interface functions
- •10.15.1 uart_getc()
- •10.15.2 uart_DCD()
- •10.15.3 uart_delay()
- •10.15.4 uart_do_irq()
- •10.15.5 uart_init()
- •10.15.6 uart_irq()
- •10.15.7 uart_putc()
- •10.15.8 uart_ready()
- •10.15.9 uart_reset()
- •10.15.10 uart_setup()
- •10.15.11 uart_stats()
- •10.16 uart.c debug TTY interface functions
- •10.16.1 dputchar()
- •10.16.2 getch()
- •10.16.3 kbhit()
- •Miscellaneous Library Functions
- •11.1 app_ping.c
- •11.2 in_utils.c
- •11.2.1 con_page()
- •11.2.2 hexdump()
- •11.2.3 nextarg()
- •11.2.4 ns_printf()
- •11.2.5 panic()
- •11.2.6 print_eth()
- •11.2.7 print_ipad()
- •11.2.8 print_uptime()
- •11.2.11 sysuptime()
- •11.2.12 uslash()
- •11.3 memman.c
- •11.4 menus.c, menulib.c, and nrmenus.c
- •11.5 nextcarg.c
- •11.5.1 nextcarg()
- •11.6 nvfsio.c
- •11.6.1 Overview
- •11.6.2 nv_fclose()
- •11.6.3 nv_fgets()
- •11.6.4 nv_fopen()
- •11.6.5 nv_fprintf()
- •11.6.6 nv_fwrite()
- •11.6.7 nv_initialize()
- •11.6.8 nv_writeflash()
- •11.7 nvparms.c
- •11.8 parseip.c
- •11.8.1 parseip()
- •11.9 reshost.c
- •11.9.1 in_reshost()
- •11.10 strilib.c
- •11.11 strlib.c
- •11.12 tcp_echo.c
- •11.13 ttyio.c
- •11.14 udp_echo.c
- •11.15 userpass.c
- •11.15.1 add_user()
- •11.15.2 check_permit()
- •Example Applications
- •12.1 Overview of the examples
- •12.1.1 Requirements
- •12.1.2 Building projects
- •12.1.3 Running the examples
- •12.2 Example descriptions
- •12.2.1 chargen
- •12.2.2 loopback
- •12.2.3 maildemo
- •12.2.4 menus
- •Error Codes
- •A.1 ENP_ error codes
- •A.2 Socket error codes
ARM-specific Functions
10.4delay.s
This file contains a simple assembly language delay loop, intended to allow time for hardware registers to settle down. The Olicom Ethernet driver uses delay() when programming the registers of the 82595 chip.
The delay() function takes a single argument, the number of microseconds to delay for.
Note
This function is not a precision timing function and the actual time delay will vary with processor clock speed and other hardware-specific variables.
ARM DUI 0079B |
Copyright © 1998 and 1999 ARM Limited. All rights reserved. |
10-7 |
ARM-specific Functions
10.5dtrap.s
The function dtrap(), implemented in this file, does nothing. If the RTOS you are using supports a trap to debugger call, you can call that from this function. It is possible to use an armsd.ini file containing the command break @_dtrap to cause the debugger to halt execution of the system when dtrap() is called.
You do not need to include dtrap.s in production code because you will have eliminated all possible causes of dtrap() before production.
10-8 |
Copyright © 1998 and 1999 ARM Limited. All rights reserved. |
ARM DUI 0079B |
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