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| author | Matt Ettus <matt@ettus.com> | 2010-10-12 23:21:39 -0700 |
|---|---|---|
| committer | Matt Ettus <matt@ettus.com> | 2010-10-12 23:21:39 -0700 |
| commit | ee03f1d4acf5c7d3359c86baba5085660d63ebae (patch) | |
| tree | 7dc719947066a31914c111fc867db51bf995782b /usrp2/vrt | |
| parent | ecea1b5b4a0c7eb6683d15ca15e176f57a5a372a (diff) | |
| download | uhd-ee03f1d4acf5c7d3359c86baba5085660d63ebae.tar.gz uhd-ee03f1d4acf5c7d3359c86baba5085660d63ebae.tar.bz2 uhd-ee03f1d4acf5c7d3359c86baba5085660d63ebae.zip | |
now handles frames larger than the vita packet (i.e. with padding)
Diffstat (limited to 'usrp2/vrt')
| -rw-r--r-- | usrp2/vrt/vita_tx_deframer.v | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/usrp2/vrt/vita_tx_deframer.v b/usrp2/vrt/vita_tx_deframer.v index 40867cc55..7fb8e3893 100644 --- a/usrp2/vrt/vita_tx_deframer.v +++ b/usrp2/vrt/vita_tx_deframer.v @@ -70,11 +70,13 @@ module vita_tx_deframer localparam VITA_PAYLOAD = 8; localparam VITA_STORE = 9; localparam VITA_TRAILER = 10; + localparam VITA_DUMP = 11; wire [15:0] hdr_len = 2 + has_streamid_reg + has_classid_reg + has_classid_reg + has_secs_reg + has_tics_reg + has_tics_reg + has_trailer_reg; - wire eop = eof | (pkt_len==hdr_len); // FIXME would ignoring eof allow larger VITA packets? + wire vita_eof = (pkt_len==hdr_len); + wire eop = eof | vita_eof; // FIXME would ignoring eof allow larger VITA packets? wire fifo_space; always @(posedge clk) @@ -101,12 +103,14 @@ module vita_tx_deframer end else if((vita_state == VITA_STORE) & fifo_space) - if(eop) - if(has_trailer_reg) + if(vita_eof) + if(eof) + vita_state <= (USE_TRANS_HEADER==1) ? VITA_TRANS_HEADER : VITA_HEADER; + else if(has_trailer_reg) vita_state <= VITA_TRAILER; else - vita_state <= (USE_TRANS_HEADER==1) ? VITA_TRANS_HEADER : VITA_HEADER; - else + vita_state <= VITA_DUMP; + else begin vita_state <= VITA_PAYLOAD; pkt_len <= pkt_len - 1; @@ -172,7 +176,13 @@ module vita_tx_deframer else vector_phase <= vector_phase + 1; VITA_TRAILER : - vita_state <= (USE_TRANS_HEADER==1) ? VITA_TRANS_HEADER : VITA_HEADER; + if(eof) + vita_state <= (USE_TRANS_HEADER==1) ? VITA_TRANS_HEADER : VITA_HEADER; + else + vita_state <= VITA_DUMP; + VITA_DUMP : + if(eof) + vita_state <= (USE_TRANS_HEADER==1) ? VITA_TRANS_HEADER : VITA_HEADER; VITA_STORE : ; default : |