Maximum port number

Ltech · 2011-09-26 05:26

I have a trouble. With "Brilldea_W5100_Indirect_Driver_Ver006" in assembly
I have to use a propeller with port number 56629.

It do not work with 56629. Smaller numbers are fine. But the server is only reacting on 56629
In notice the bigest value for a port is 65533. So mine is theoretical in range.

With a udp test on pc on a lower port 5000 it works on 56629 not. It is faling on opening socket.

So i assume it is in the assembly code "Defined data" ?

Thanks a lot for helping me

Mike G · 2011-09-26 06:34

The PASM code does not trim the low byte port values which cause expected results in #WriteSingle . Find the sOPEN label and add the following line in two places in the source code. Please test, I'm not sure if this causes issues elsewhere in the code. If unit testing works out, I'll update the Google repository.

and       data,   #$FF            'Filter the low byte MG 9/26/2011

It should look like this.

'-----------------------------------------------------------------------------------------------------
'Command sub-routine for opening a socket
'this routine relies upond t0 being persistant across calls to writing routines
'-----------------------------------------------------------------------------------------------------
sOPEN
              mov       t0,     paramA          'Move the socket number into t0 ($000s)
              shl       t0,     #8              'Move the socket number to the third digit ($0s00).  This is the offset to use for below ops.

              'set the mode
              mov       reg,    _S0_MR_d        'Move the register address into a variable for processing
              add       reg,    t0              'Add in the offset for the particular socket to be worked on
              mov       data,   paramB          'Move over the socket type
              call      #WriteSingle            'Write the byte to the W5100

              'set the source port
              mov       reg,    _S0_PORT1_d     'Move the register address into a variable for processing
              add       reg,    t0              'Add in the offset for the particular socket to be worked on
              mov       data,   paramC          'Move over the source socket value
              and       data,   #$FF            'Filter the low byte MG 9/26/2011  
              call      #WriteSingle            'Write the byte to the W5100
              sub       reg,    #1              'Increment the register address
              mov       data,   paramC          'Move over the source socket value
              shr       data,   #8              'shift the data over one byte
              and       data,   #$FF            'Filter the low byte MG 9/26/2011
              call      #WriteSingle            'Write the byte to the W5100

Beau Schwabe · 2011-09-26 07:50

Mike G,

just tested... seems that the limit is 32767 ... I'm suspicious that the sign bit might be getting in the way here.

Ltech · 2011-09-26 07:59

Yes the spinneret opens a socket on port 56629. (terminal window info)
I can't test the real udp connetion server down now

****** You have to modify the destination and the source port ....******

Thanks Mike it helps me a lot

Ltech · 2011-09-26 13:05

Yes it works on port 56629

Maximum port number

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