lcd液晶屏說課材料

1、Good is good, but better carries it.精益求精，善益求善。lcd液晶屏-08.08.02TEST128x64漢字顯示OKIO_ADDRESSequ288hDATASEGMENTHZ_TABDW0A3B3H,0A3B2H,0CEBBH,0CEA2H,0BBFAH,0BDCCH,0D1A7H,0CAB5HDW0D1E9H,0CFB5H,0CDB3H,0D5FDH,0D4DAH,0D1DDH,0CABEH,0D6D0HHZ_ADRDB?;存放顯示行起始端口地址DATAENDScodesegmentassumecs:code,ds:dataSTART:MOVAX,DA

2、TAMOVDS,AXMOVDX,IO_ADDRESSADDDX,3MOVAL,80HOUTDX,AL;8255初始化moval,0ffhmovdx,300Houtdx,alCALLCLEAR;LCD清除;CALLFUNCUP;LCD功能設置LEABX,HZ_TABMOVCH,2;顯示第2行信息CALLLCD_DISPLEABX,HZ_TABMOVCH,3;顯示第3行信息CALLLCD_DISPl1:jmpstart;l1CLEARPROCMOVAL,0CHMOVDX,IO_ADDRESSOUTDX,AL;設置CLEAR命令CALLCMD_SETUP;啟動LCD執(zhí)行命令RETCLEARENDPF

3、UNCUPPROC;MOVAL,0fH;LCD功能設置命令;OUTDX,AL;CALLCMD_SETUPMOVAL,34H;LCD顯示狀態(tài)命令OUTDX,ALCALLCMD_SETUPRETFUNCUPENDPLCD_DISPPROCLEABX,HZ_TABCMPCH,2JZDISP_SECMOVBYTEPTRHZ_ADR,88H;第三行起始端口地址ADDBX,16;指向第二行信息JMPnextDISP_SEC:MOVBYTEPTRHZ_ADR,90Hnext:movcl,8continue:pushcxMOVAL,HZ_ADRMOVDX,IO_ADDRESSOUTDX,ALCALLCMD_S

4、ETUP;設定DDRAM地址命令MOVAX,BXPUSHAXMOVAL,AH;先送漢字編碼高位MOVDX,IO_ADDRESSOUTDX,ALCALLDATA_SETUP;輸出漢字編碼高字節(jié)CALLDELAY;延遲POPAXMOVDX,IO_ADDRESSOUTDX,ALCALLDATA_SETUP;輸出漢字編碼低字節(jié)CALLDELAYINCBXINCBX;修改顯示內(nèi)碼緩沖區(qū)指針I(yè)NCBYTEPTRHZ_ADR;修改LCD顯示端口地址POPCXDECCLJNZCONTINUERETLCD_DISPENDPCMD_SETUPPROCMOVDX,IO_ADDRESS;指向8255端口控制端口ADD

5、DX,2NOPMOVAL,00000000B;PC1置0,pc0置0（LCDI端=0，W端0）OUTDX,ALcalldelayNOPMOVAL,00000100B;PC2置1（LCDE端1）OUTDX,ALNOPcalldelayMOVAL,00000000B;PC2置0,（LCDE端置0）OUTDX,ALcalldelayRETCMD_SETUPENDPDATA_SETUPPROCMOVDX,IO_ADDRESS;指向8255控制端口ADDDX,2MOVAL,00000001B;PC1置0，PC0=1（LCDI端=1）OUTDX,ALNOPcalldelayMOVAL,00000101B;

6、PC2置1（LCDE端1）OUTDX,ALNOPcalldelayMOVAL,00000001B;PC2置0,（LCDE端0）OUTDX,ALNOPcalldelayRETDATA_SETUPENDPDELAYPROCpushcxpushdxMOVCX,0fffhx1:loopx1popdxpopcxRETDELAYENDPcodeendsendstart/*/*LCD漢字顯示*/*/#include#include#includeApiExusb.h#pragmacomment(lib,ApiExusb.lib)charlcd216=0 xa3,0 xb3,0 xa3,0 xb2,0 xce

7、,0 xbb,0 xce,0 xa2,0 xbb,0 xfa,0 xbd,0 xcc,0 xd1,0 xa7,0 xca,0 xb5;charlcd316=0 xd1,0 xe9,0 xcf,0 xb5,0 xcd,0 xb3,0 xd5,0 xfd,0 xd4,0 xda,0 xd1,0 xdd,0 xca,0 xbe,0 xd6,0 xd0;voidclear();voidcmdsetup();voiddatasetup();voidmain()inti;printf(Pressanykeytobegin!nn);getch();if(!Startup()/*打開設備*/printf(ER

8、ROR:OpenDeviceError!n);return;PortWriteByte(0 x28b,0 x80);/*設8255為方式0,C口輸出,A口輸出*/clear();PortWriteByte(0 x288,0 x90);cmdsetup();Sleep(10);for(i=0;i16;i+)PortWriteByte(0 x288,lcd2i);datasetup();PortWriteByte(0 x288,0 x88);cmdsetup();Sleep(10);for(i=0;i16;i+)PortWriteByte(0 x288,lcd3i);datasetup();Cleanup();/*關閉設備*/voidclear()PortWriteByte(0 x288,0 x0c);cmdsetup();voidcmdsetup()PortWriteByte(0 x28a,0 x00);Sleep(1);PortWriteByte(0 x28a,0 x04);Sleep(1);PortWriteByte(0 x28a,0 x00);