[time-nuts] VP oncore problem

Morris Odell vilgotch at bigpond.net.au
Fri Feb 29 18:03:05 EST 2008

Hi all,

I wonder if anyone can help me with a problem I'm having with a VP Oncore 

I am building something which includes one of these receivers and it 
communicates with the host microcontroller via the VP's serial binary link. 
The host receives messages from the VP just fine. The problem arises when 
the host tries to send configuration commands to the VP. When this happens 
the VP only responds to the first of 4  messages (Total: about 40 bytes). It 
doesn't matter what order they are sent in a continuous string or whether or 
not there are time delays up to 5 seconds or dummy characters between them, 
the VP only acknowledges the first one and is deaf to any more. Once the 
system is restarted it will receive one more message before going deaf 

The VP manual says the serial receive buffer will store up to 2048 
characters and act on them sequentially. This is obviously not happening. Am 
I missing something here?



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