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data field start

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This commit is contained in:
leo 2023-09-26 11:00:33 +02:00
parent 483aac6162
commit 886949296a
Signed by: leo
GPG Key ID: 0DD993BFB2B307DB
1 changed files with 63 additions and 2 deletions
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65
ReceptionTrame_lib/receptionTrame_com.vhd
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@ -30,7 +30,7 @@ ENTITY receptionTrame_com IS
END receptionTrame_com;
ARCHITECTURE arch of receptionTrame_com IS
TYPE state IS (waiting, syncBreak0, syncBreak1, syncFieldWait, syncFieldStart, syncFieldData, syncFieldStop, idFieldWait, idFieldStart, idFieldData, idFieldStop);
TYPE state IS (waiting, syncBreak0, syncBreak1, syncFieldWait, syncFieldStart, syncFieldData, syncFieldStop, idFieldWait, idFieldStart, idFieldData, idFieldStop, dataFieldWait, dataFieldStart, dataFieldData, dataFieldStop);
SIGNAL cState, nState : state;
BEGIN
@ -120,7 +120,39 @@ CASE cState IS
WHEN idFieldStop =>
if(n_0 = '1') then
if(LinSYnchro = '1') then
nState <= waiting; -- data frame
nState <= dataFieldWait;
else
nState <= waiting;
end if;
end if;
WHEN dataFieldWait =>
if(LinSynchro = '0') then
nState <= dataFieldStart;
end if;
WHEN dataFieldStart =>
if(n_0 = '1') then
if(LinSynchro = '0') then
nState <= dataFieldData;
else
nState <= waiting;
end if;
end if;
WHEN dataFieldData =>
if(nbBit_0 = '1') then
nState <= dataFieldStop;
end if;
WHEN dataFieldStop =>
if(n_0 = '1') then
if(LinSynchro = '1') then
if(nbData_0 = '1') then
nState <= waiting;
else
nState <= dataFieldWait;
end if;
else
nState <= waiting;
end if;
@ -260,6 +292,35 @@ BEGIN
nbBit_LOAD <= '0';
n_EN <= '1';
end if;
WHEN idFieldStop =>
if(n_0 = '1') then
if(LinSynchro = '1') then
nbData_LOAD <= '1';
else
-- ERROR id stop
end if;
else
n_LOAD <= '0';
n_EN <= '1';
end if;
WHEN dataFieldWait =>
if(LinSynchro = '0') then
n_SELECT <= '1';
n_LOAD <= '1';
end if;
WHEN dataFieldStart =>
if(n_0 = '1') then
n_SELECT <= '0';
n_LOAD <= '1';
nbBit_SELECT <= '1';
nbBit_LOAD <= '1';
else
n_LOAD <= '0';
n_EN <= '1';
end if;
WHEN others =>