lwIP Related

The server socket example won't work with lwIP. It was written for InterNiche. You can use lwIP without an OS (easier than you can with InterNiche), but you will have to write your own socket example. lwIP socket programming is not difficult.

Bill A.

Thanx BillA,

1.Simple Socket Server Example is working with Quartus 5, and use telnet as a server. with lwIP only. (Example code given along with NIOS-II it IDE tool )

2. Is the API's i am using on Linux (bind, connect, etc.) while writing socket programming is same on lwIP?

3. If I wish to take data through Ethernet using lwip and after processing it ...i want to forward it to some other ip address or some other FPGA modules, does it required OS in between?

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Thanx BillA,

1.Simple Socket Server Example is working with Quartus 5, and use telnet as a server. with lwIP only. (Example code given along with NIOS-II it IDE tool )

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You're welcome. I was commenting on current versions of NIOS tools which don't support lwIP.

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2. Is the API's i am using on Linux (bind, connect, etc.) while writing socket programming is same on lwIP?

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Yes, the sockets API in lwIP is pretty close to standard.

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3. If I wish to take data through Ethernet using lwip and after processing it ...i want to forward it to some other ip address or some other FPGA modules, does it required OS in between?

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No, lwIP works well without an OS and it's "RAW API" is very efficient. If you use sockets, of course you'll need 2 and have to pass data from one to the other. sockets do require an OS in lwIP - the RAW API does not, but does require you monitor a timer and do the TCP housekeeping by making calls to lwIP timing functions. I've posted a message on the lwip-users mailing list (see lwip on Savannah) on how to do this easily with no OS.

You can use an OS and FreeRtos is used a lot by many lwIP users.

Bill

Thanx Bill,

Could you please suggest me some document/web link, who put light on lwIP function Call's.

kaushal

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Thanx Bill,

Could you please suggest me some document/web link, who put light on lwIP function Call's.

kaushal

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https://savannah.nongnu.org/projects/lwip

http://lwip.wikia.com/wiki/lwip_wiki

Bill

Dear Bill,

I have Quartus 5.0 and NIOS-II (ver 1.1) and i am writing an application over uc/OS-II.

now i am trying to add simple client application and before building the project i add the lwip software component but during compilation time it reflect following error's

**** Incremental build of configuration Debug for project hello_ucosii_0 ****

make -s all

Compiling hello_ucosii.c...

Linking hello_ucosii_0.elf...

C:/altera/kits/nios2_60/examples/verilog/niosII_cyclone_1c20/standard/software/hello_ucosii_0_syslib/Debug/libhello_ucosii_0_syslib.a(altera_avalon_lan91c111 .o)(.text+0xd88): In function `low_level_init':

/cygdrive/c/altera/kits/nios2_60/components/altera_avalon_lan91c111/UCOSII/src/altera_avalon_lan91c111.c:752: undefined reference to `get_mac_addr'

C:/altera/kits/nios2_60/examples/verilog/niosII_cyclone_1c20/standard/software/hello_ucosii_0_syslib/Debug/libhello_ucosii_0_syslib.a(alt_lwip_dev.o)(.text+0 x230): In function `lwip_devices_init':

/cygdrive/c/altera/kits/nios2_60/components/altera_lwip/UCOSII/src/alt_lwip_dev.c:165: undefined reference to `get_ip_addr'

collect2: ld returned 1 exit status

make: *** [hello_ucosii_0.elf] Error 1

Build completed

1.>i do not know how to add a simple client application over uc/OS, please help me out how to add this

2.> what setting's i ave to do before writing client code.

3.> what are the header files are required.

when i add the ipport.h and tcpport.h file it generate the following errors (though i haven't yet add my c-code , i have just add the header file anly)

**** Incremental build of configuration Debug for project hello_ucosii_0 ****

make -s all

Compiling hello_ucosii.c...

../hello_ucosii.c:42:20: ipport.h: No such file or directory

../hello_ucosii.c:43:21: tcpport.h: No such file or directory

make: *** [obj/hello_ucosii.o] Error 1

Build completed

kaushal

http://www.alteraforum.com/proweb/misc/progress.gif (http://www.alteraforum.com/forum/editpost.php?do=editpost&p=83099)

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Dear Bill,

I have Quartus 5.0 and NIOS-II (ver 1.1) and i am writing an application over uc/OS-II.

now i am trying to add simple client application and before building the project i add the lwip software component but during compilation time it reflect following error's

**** Incremental build of configuration Debug for project hello_ucosii_0 ****

make -s all

Compiling hello_ucosii.c...

Linking hello_ucosii_0.elf...

C:/altera/kits/nios2_60/examples/verilog/niosII_cyclone_1c20/standard/software/hello_ucosii_0_syslib/Debug/libhello_ucosii_0_syslib.a(altera_avalon_lan91c111 .o)(.text+0xd88): In function `low_level_init':

/cygdrive/c/altera/kits/nios2_60/components/altera_avalon_lan91c111/UCOSII/src/altera_avalon_lan91c111.c:752: undefined reference to `get_mac_addr'

C:/altera/kits/nios2_60/examples/verilog/niosII_cyclone_1c20/standard/software/hello_ucosii_0_syslib/Debug/libhello_ucosii_0_syslib.a(alt_lwip_dev.o)(.text+0 x230): In function `lwip_devices_init':

/cygdrive/c/altera/kits/nios2_60/components/altera_lwip/UCOSII/src/alt_lwip_dev.c:165: undefined reference to `get_ip_addr'

collect2: ld returned 1 exit status

make: *** [hello_ucosii_0.elf] Error 1

Build completed

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It sounds like you're missing the actual driver - usually in ethernetif.c - low_level_init and other functions particular to the 91C111 would be here. Search all of your files for low_level_init and be sure it's included in the project.

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1.>i do not know how to add a simple client application over uc/OS, please help me out how to add this

2.> what setting's i ave to do before writing client code.

3.> what are the header files are required.

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Check the files on the sites I listed above. You need to get Ethernet working, and then a port of lwIP for uC/OS-II. You will probably find much more help on those sites than here. I have not used 9C111 or uC/OS-II with lwIP so I can't say much more about this configuration.

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when i add the ipport.h and tcpport.h file it generate the following errors (though i haven't yet add my c-code , i have just add the header file anly)

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These files are files supplied and for use with InterNiche - do not mix TCP/IP stack source files! Either use InterNiche or lwIP. As InterNiche already supports uC/OS-II on the NIOS, why not use it?

Bill