mirror of
https://github.com/RobotechLille/cdf2018-principal
synced 2024-12-22 05:30:37 +01:00
FPGA : Pile/cache d'envoi
This commit is contained in:
parent
81a7fd8bd7
commit
d0e5842ca4
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@ -175,7 +175,10 @@ build/%_tb: build/%_tb.o $(addprefix build/,$(subst .vhd,.o,$(VHDSOURCE)))
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build/%_tb.vcd: build/%_tb
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(cd "$(shell dirname "$<")"; ghdl -r "$(basename $(notdir $<))" --vcd="../$@" )
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%_wave: build/%_tb.vcd
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build/%_tb.ghw: build/%_tb
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(cd "$(shell dirname "$<")"; ghdl -r "$(basename $(notdir $<))" --wave="../$@" )
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%_wave: build/%_tb.ghw
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gtkwave --save "$(notdir $(basename $<)).gtkw" "$<"
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###########################################################################
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@ -34,8 +34,9 @@ architecture Behavioral of communication is
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signal readOffset : integer := 0;
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type sendMessages is (none, A2FD_PINGs, F2AD_ERR_UNKNOWN_CODEs);
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signal sendMessage : sendMessages := none;
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signal sendOffset : integer := 0;
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constant SENDQUEUE_SIZE : integer := 4;
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type sendQueueMemorya is array (0 to SENDQUEUE_SIZE - 1) of sendMessages;
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signal frontTrigger : integer := 0;
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signal backTrigger : integer := 0;
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@ -46,13 +47,49 @@ begin
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txStb <= txStbs;
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readsendFA : process(clock, reset)
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variable sendMessage : sendMessages := none;
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variable sendOffset : integer := 0;
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-- Send queue
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variable sendQueueMemory : sendQueueMemorya;
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variable sendTail : integer := 0;
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variable sendHead : integer := 0;
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variable sendLooped : boolean := false;
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procedure pushSend
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(message : in sendMessages) is
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begin
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sendQueueMemory(sendHead) := message;
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if sendHead < SENDQUEUE_SIZE - 1 then
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sendHead := sendHead + 1;
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else
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sendHead := 0;
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sendLooped := true;
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end if;
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end pushSend;
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procedure popSend
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(message : out sendMessages) is
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begin
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if sendTail < sendHead or sendLooped then
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message := sendQueueMemory(sendTail);
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if sendTail < SENDQUEUE_SIZE - 1 then
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sendTail := sendTail + 1;
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else
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sendTail := 0;
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sendLooped := false;
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end if;
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else
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message := none;
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end if;
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end popSend;
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begin
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if reset = '1' then
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readState <= readIdle;
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txStbs <= '0';
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sendMessage <= none;
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sendOffset <= 0;
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else
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if rising_edge(clock) then
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-- If read something
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@ -60,31 +97,36 @@ begin
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if readState = readIdle then
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case rxData is
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when A2FD_PING =>
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sendMessage <= A2FD_PINGs; -- TODO Not so brutal
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pushSend(A2FD_PINGs);
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when others =>
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sendMessage <= F2AD_ERR_UNKNOWN_CODEs;
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pushSend(F2AD_ERR_UNKNOWN_CODEs);
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end case;
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end if;
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end if;
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-- If what was sent is acknowledged and there is still something to send
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if txStbs = '0' or txAck = '1' then
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if sendMessage = none then -- Reads a message if none is currently being sent
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sendOffset := 0;
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popSend(sendMessage);
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else
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sendOffset := sendOffset + 1;
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end if;
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txStbs <= '1';
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sendOffset <= sendOffset + 1;
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case sendMessage is
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when none =>
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when none => -- If no message available: don't send anything
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txStbs <= '0';
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sendOffset <= 0;
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when A2FD_PINGs =>
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txData <= A2FD_PING;
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sendMessage <= none;
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sendMessage := none;
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when F2AD_ERR_UNKNOWN_CODEs =>
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case sendOffset is
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when 0 =>
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txData <= F2AD_ERR;
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when others =>
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txData <= ERR_UNKNOWN_CODE;
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sendMessage <= none;
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sendMessage := none;
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end case;
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end case;
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end if;
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@ -1,41 +1,52 @@
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[*]
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[*] GTKWave Analyzer v3.3.86 (w)1999-2017 BSI
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[*] Sun Feb 25 17:14:08 2018
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[*] Mon Feb 26 17:06:42 2018
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[*]
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[dumpfile] "/home/geoffrey/Documents/Polytech/Robotech/2017-2018/CdF/cdf2018-principal/fpga/build/communication_tb.vcd"
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[dumpfile_mtime] "Sun Feb 25 17:12:53 2018"
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[dumpfile_size] 4479
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[dumpfile] "/home/geoffrey/Documents/Polytech/Robotech/2017-2018/CdF/cdf2018-principal/fpga/build/communication_tb.ghw"
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[dumpfile_mtime] "Mon Feb 26 17:03:51 2018"
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[dumpfile_size] 3315
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[savefile] "/home/geoffrey/Documents/Polytech/Robotech/2017-2018/CdF/cdf2018-principal/fpga/communication_tb.gtkw"
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[timestart] 0
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[size] 1680 1012
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[pos] -1 -1
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*-27.785210 1133000000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
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*-28.533670 586000000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
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[treeopen] top.
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[treeopen] top.communication_tb.
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[treeopen] top.communication_tb.dut.
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[sst_width] 213
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[signals_width] 118
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[sst_expanded] 1
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[sst_vpaned_height] 244
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[sst_vpaned_height] 200
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@28
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clock
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reset
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@820
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[color] 2
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rxdata[7:0]
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@22
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[color] 2
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rxdata[7:0]
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@28
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[color] 2
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rxstb
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@820
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[color] 5
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txdata[7:0]
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top.communication_tb.clock
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top.communication_tb.reset
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@22
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[color] 5
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txdata[7:0]
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#{top.communication_tb.rxdata[7:0]} top.communication_tb.rxdata[7] top.communication_tb.rxdata[6] top.communication_tb.rxdata[5] top.communication_tb.rxdata[4] top.communication_tb.rxdata[3] top.communication_tb.rxdata[2] top.communication_tb.rxdata[1] top.communication_tb.rxdata[0]
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@820
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[color] 5
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#{top.communication_tb.rxdata[7:0]} top.communication_tb.rxdata[7] top.communication_tb.rxdata[6] top.communication_tb.rxdata[5] top.communication_tb.rxdata[4] top.communication_tb.rxdata[3] top.communication_tb.rxdata[2] top.communication_tb.rxdata[1] top.communication_tb.rxdata[0]
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@28
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[color] 5
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txstb
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[color] 5
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txack
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top.communication_tb.dut.rxstb
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@420
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[color] 6
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top.communication_tb.dut.readstate
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[color] 6
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top.communication_tb.dut.readoffset
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@421
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[color] 2
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top.communication_tb.dut.a
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@22
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[color] 1
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#{top.communication_tb.txdata[7:0]} top.communication_tb.txdata[7] top.communication_tb.txdata[6] top.communication_tb.txdata[5] top.communication_tb.txdata[4] top.communication_tb.txdata[3] top.communication_tb.txdata[2] top.communication_tb.txdata[1] top.communication_tb.txdata[0]
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@820
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[color] 1
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#{top.communication_tb.txdata[7:0]} top.communication_tb.txdata[7] top.communication_tb.txdata[6] top.communication_tb.txdata[5] top.communication_tb.txdata[4] top.communication_tb.txdata[3] top.communication_tb.txdata[2] top.communication_tb.txdata[1] top.communication_tb.txdata[0]
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@28
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[color] 1
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top.communication_tb.dut.txstb
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[color] 1
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top.communication_tb.dut.txack
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[pattern_trace] 1
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[pattern_trace] 0
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@ -6,7 +6,7 @@ library ieee;
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use ieee.std_logic_1164.all;
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entity communication_tb is
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end communication_tb;
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end communication_tb;
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architecture tb of communication_tb is
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@ -78,7 +78,7 @@ begin
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-- Test Ping
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report "Receiving 'P'" severity note;
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report "TEST Receiving 'P'" severity note;
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rxData <= x"50";
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rxStb <= '1';
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wait for TbPeriod;
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@ -101,7 +101,7 @@ begin
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-- Test unknown char
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report "Receiving '?'" severity note;
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report "TEST Receiving '?'" severity note;
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rxData <= x"3F";
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rxStb <= '1';
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wait for TbPeriod;
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@ -131,6 +131,33 @@ begin
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assert txStb = '0' report "Not stopping send" severity error;
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wait for 100 ns; -- Margin
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-- Test queue
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report "TEST Receiving 'P' three times" severity note;
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rxData <= x"50";
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for I in 0 to 2 loop
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rxStb <= '1';
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wait for TbPeriod;
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rxStb <= '0';
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wait for 100 ns;
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end loop;
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for I in 0 to 2 loop
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wait for 100 ns;
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assert txData = x"50" report "Not sent 'P'" severity error;
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assert txStb = '1' report "Not sending" severity error;
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report "Acknowledging send" severity note;
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wait for 100 ns;
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txAck <= '1';
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wait for TbPeriod;
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txAck <= '0';
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end loop;
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wait for 100 ns;
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assert txStb = '0' report "Not stopping send" severity error;
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wait for 100 ns; -- Margin
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TbSimEnded <= '1';
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wait;
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