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Richard Erlacher
09/08/08 20:34
Read: 776 times
Denver, Co
USA


 
#158103 - use the FPGA memory for trigger FIFO
Responding to: Andy Peters's previous message
I've had to build a few that were "nearly" complete logic analyzers, but needed complex triggering logic. If you use the on-chip memory, of which there's not very much, as a trigger FIFO, and use external memory to buffer the samples, I think you'll have a better set of triggering options, like wait until THIS happens nnn times, then wait for THAT to occur, then wait for This_Other_Thing mmm times, ... you get the picture. It's not nearly as hard as one might think.

The PC software IS the crux.

RE


List of 29 messages in thread
TopicAuthorDate
Logic Analyzer      Per Guldmann      09/04/08 06:31      
   another option      Erik Malund      09/04/08 07:38      
   From the embedded muse...      Jon Ledbetter      09/04/08 08:19      
      that Jack is a King      Erik Malund      09/04/08 09:33      
   I bought one...      Dave Brooks      09/04/08 12:40      
      Exactly what analyzer did you buy?      Per Westermark      09/04/08 12:52      
         the 34 channel one...      Dave Brooks      09/04/08 13:02      
            Link      Andy Neil      09/05/08 01:29      
      in the job where I work now...      Jan Waclawek      09/04/08 13:05      
         logic analyzer      Per Guldmann      09/08/08 14:25      
            lucky you      Erik Malund      09/08/08 14:37      
         Logic Analyzer projects      Andy Peters      09/08/08 18:45      
            use the FPGA memory for trigger FIFO      Richard Erlacher      09/08/08 20:34      
            thst's it!      Jan Waclawek      09/17/08 00:36      
               do you mean "PC-software" or "Windows software"      Richard Erlacher      09/17/08 04:31      
                  Both.      Jan Waclawek      09/17/08 12:00      
                     now ... I\'ve never done this ... but ...      Richard Erlacher      09/17/08 16:47      
                        MinGW + wxWidgets      Per Westermark      09/17/08 23:00      
   miniLA      Jan Waclawek      09/07/08 07:54      
      great info      Jecksons Ben      09/07/08 21:43      
         Look for old PC motherboard cache RAM        Richard Erlacher      09/07/08 23:04      
            Thank you      Jecksons Ben      09/08/08 18:50      
         replacement        Jan Waclawek      09/08/08 12:54      
            Thank's      Jecksons Ben      09/08/08 19:13      
   Found???      Jecksons Ben      09/16/08 22:01      
      Those are hard to work with      Richard Erlacher      09/17/08 04:34      
         Correct...but.      Jecksons Ben      09/17/08 21:32      
   Hi      Nomana Intekhab Hadi (Ruh      11/15/08 16:30      
      this defines ...      Andy Peters      11/19/08 14:31      

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