IF EnPulse = '0' THEN
CntINPulse <= 0;
EnOutput <= '0';
PulseCNTStart <= '0';
ELSIF (PulseIN 'EVENT AND PulseIN = '1') THEN
if CntINPulse = 1 then
PulseCNTStart <= '1';
elsif CntINPulse = 11 then
CntINPulse<= 0;
PulseCNTStart <= '0';
else
CntINPulse<=CntINPulse+1;
end if;
end if;
为啥加上 if CntINPulse = 1就不好使？这样就好使了，就出现了在第11个脉冲处出现CntINPulse拉低，在起始处CntINPulse 变高：为何加上if CntINPulse = 1后CntINPulse就变成全高了？
IF EnPulse = '0' THEN
CntINPulse <= 0;
EnOutput <= '0';
PulseCNTStart <= '0';
ELSIF (PulseIN 'EVENT AND PulseIN = '1') THEN
PulseCNTStart <= '1';
if CntINPulse = 11 then
CntINPulse<= 0;
PulseCNTStart <= '0';
else
CntINPulse<=CntINPulse+1;
end if;
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