ADDA的FPGA控制

《ADDA的FPGA控制》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、libraryieee;useieee.std_logic_1164.all;useieee.std_logic_unsigned.all;useieee.std_logic_arith.all;entityaddaisport(keyc:instd_logic;--thekeyforchoosethekindofdisplay    --bcdout:instd_logic_vector(11downto0);    --qa:instd_logic_vector(11downto0);    dataoututstd_logic_vector(11downto0);--fordispla

2、y    key:instd_logic;--maketherateofthevalue    datain:instd_logic_vector(7downto0);--thedatafromtheADdevice    clk:instd_logic;--theclockoftheAD-deviceworks750kHZ    eoc:instd_logic;--theADensureout    --lock1utstd_logic;--??    aleutstd_logic;--theAD'addressensureout    start:outstd_logic;--thead

3、'signalofstarting    oe:outstd_logic;--theoutensure    adda:outstd_logic;--thechannelofchoosing    clkk:instd_logic;--theclockoftheDAdeviceworks    clk1:instd_logic;--thefrequencyofmovingdata    kk:instd_logic;--thekeyforchangethefrequency    --data:instd_logic_vector(11downto0);    --dd:outstd_log

4、ic_vector(7downto0));    dd:outstd_logic_vector(7downto0));--thedatafortheDAend;architectureartofaddaissignalbcdout:std_logic_vector(11downto0);--thenumericalnumberfromtheADdevicesignalqqa:std_logic_vector(11downto0);--thenumericalnumberfromthekeyboardsignalqaa:std_logic_vector(11downto0);--themarg

5、insignaldata:std_logic_vector(11downto0);--thenumericalnumberfortheDAsignaldataa,datab,datac:std_logic_vector(3downto0);--thedataforthearithmeticsignaldta,dtb,dtc:std_logic_vector(3downto0);--liketheabovesignalwk:std_logic;--theclockofthearithmeticsignalqa,qb,qc:std_logic_vector(3downto0);--thedata

6、foroneofthedisplay--signalda,db,dc:std_logic_vector(3downto0);--daisthehighestbitbthemiddlethecthelastone--signaldda,ddb,ddc:std_logic_vector(3downto0);--signalqqa:std_logic_vector(11downto0);--thecountforsub--signalstate:std_logic_vector(1downto0);--thekindofdisplay--signalqqa:std_logic_vector(11d

7、ownto0);--thecountforsubbeginwk<=clk;dataa<=qqa(11downto8);datab<=qqa(7downto4);datac<=qqa(3downto0);dta<=bcdout(11downto8);dtb<=bcdout(7downto4);dtc<=bcdout(3downto0);qaa<=qa&qb&qc;data<=bcdout;--????keybo