George-
> We'd greatly appreciate any help, thanks!
I noticed that you're asserting 'skip' in the WAIT state for a starting packet,
and in the HEADER state for later packets. Without more code, I can't tell if
this makes any difference. You might try rewriting it to have the same state
transitions and assertion of 'skip' for all packets of a burst.
/Hugh
something like this:
modify the second half of HEADER state like:
if (fifodata[`STARTOFBURST] == 1)
// new burst; use clk to decide whether to skip
trash <= 0;
payload_len <= fifodata[`PAYLOAD] ;
read_len <= 0;
reader_state <= TIMESTAMP;
rdreq <= 1;
and then change the WAIT state as:
begin
if (tx_strobe == 1)
tx_empty <= 1 ;
if (trash == 1) //skip second and later packets flagged as trash
begin
reader_state <= IDLE;
skip <= 1;
end
else if ((timestamp < (adc_time + `JITTER)
&& (timestamp > adc_time))
|| timestamp == 32'hFFFFFFFF)
reader_state <= WAITSTROBE;
// Wait a little bit more
else if (timestamp > adc_time + `JITTER)
reader_state <= WAIT;
// Outdated
else if (timestamp < adc_time)
//skip start of burst, flag later as trash
begin
trash <= 1;
reader_state <= IDLE;
skip <= 1;
end
end
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