I've been pondering a few ways to do the wait and ramp down (wait something like 16 clocks and then ramp down by right shifting on each clock)- but to do so, I need to know what the last value was so I can shift it. Will tx_i_*/tx_q_* remain persistent between clocks (my deduction was yes?) If so, my plan here was to have a reg that holds a 4-bit counter that starts at 15 whenever tx empty goes high/true and then just keep right shifting the appropriate value (based on load_next) until zero (or just keep shifting until data since 0 >> 1 = 0- would that save on logic?).
Then I had one question- is there ever a situation where we're out of data for any number of channels, but there's still one transmitting (e.g. can tx_empty ever be asserted when we're feeding just one of the 4 destinations?). I'm under the (mistaken?) impression that tx_empty asserts when we stop feeding the buffer altogether (underrun)- so without doing some digging- do we fill zero's to the channels we're not using when we're still feeding one of them? With those answered, I think I can probably try and get a version done today for testing. -- View this message in context: http://www.nabble.com/ramping-down-%28tx_empy-continued%29-tf3021634.html#a8392238 Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
