微处理器实验第十一次实验指导书20131127.doc

实验十一信号发生器设计实验名称：信号发生器设计 学时安排：4学时实验类别：设计性 实验要求：必做 一、实验目的通过本实验，实现典型信号的产生，继续熟悉单片机及D/A应用。二、实验设备及器件 1IBM PC机 一台2DP-51PRO.NET单片机仿真器、编程器、实验仪三合一综合开发平台 一台三、实验内容2、编写程序，通过I2C总线器件ZLG7290实现键盘输入与显示。3、编写程序，通过DAC0832实现信号发生。四、实验要求熟练掌握D/A器件的驱动和应用，熟悉I2C总线协议。五、实验步骤1、安装D7区 JP1接口上的短路帽，将D7区 J4接口SDA.SCL针分别与A2区接口的P17.P16相连。2、将D7区 J2接口的RST针与A2区接口的P1.3相连。3、将D7区 J2接口的INT_KEY针与A2区接口的INT1相连。4、连接DAC0832：1)使用导线把A2区 J58接口的/WR引脚与B6区的J37接口的WR1、WR2相连2)使用导线把A2区 J63接口的A15引脚与B6区的/CS、XFER相连;3)使用导线把B6区 J10接口的ILE.Vref和VCC相连;4)使用导线把B6区 J11接口的IOUT1与C9区 J71接口的B-相连;5)使用导线把B6区 J11接口的IOUT2与C9区 J71接口的B+相连，同时也与GND相连;6)使用导线把B6区 J10接口的Rfb与C9区 J71接口的BOUT相连;7)使用导线把C9区 J71接口的V+与C9区 J19接口的+12V相连;8)使用导线把C9区 J72接口的V-与C9区 J19接口的-12V相连; 5、运行编写好的软件程序，检验实验结果。六、实验参考程序DAC0832EQU6000HSDABITP1.7;I2C总线定义SCL BITP1.6RST BITP1.3MTDEQU40H;发送数据缓冲器MRDEQU49H;接收数据缓冲区KEY EQU3FH;键值存储器KEY1EQU3DH;按键计数KEY2EQU3CH;按键计数KEY3EQU3BH;按键计数FLAGBIT00H;定义器件地址,变量ZLG7290 EQU70H;ZLG7290的器件地址ACKBIT10H;应答标志位SLADATA50H;器件的从地址SUBADATA51H;器件的子地址NUMBYTEDATA52H;读/写的字节数变量ORG 0000HJMP MAINORG0013H ；外部中断1JMPKEYINT1ORG 0100HMAIN:CLR EA ；关闭中断总开关CLRRSTLCALLDELAY ；复位后正常工作SETBRSTLCALLDELAY初始化MOVSP,#60H MOVA,#01HR0 、R1、 R2 =0KEY1 、KEY2、KEY3 =01HMOVKEY1,AMOVKEY2,AMOV KEY3,ACLR FLAG MOVR0,#0 MOVR1,#0MOV R2,#0MOV3AH,#0SETBIT1SETBEX1 ；开外部中断1SETB EAGENE:JNB FLAG,$ ；等待中断MOV A,KEY1GENE1:CJNE A,#01H,GENE2AJMP LOOP1GENE2:CJNE A,#02H,GENE3AJMP LOOP2GENE3:CJNE A,#03H,GENEAJMP LOOP3 LOOP1: MOVR5,KEY3MOVA,R0 MOVDPTR,#SINE_DATACJNER1,#1,LOW_TABINC DPHA除于B，商放在（A）,余放在（B）LOW_TAB:MOVCA,A+DPTR;MOVDPTR,#DAC0832LOOP11:MOVB,KEY2DIVABMOVXDPTR,A; INC R0; CJNER1,#1,INC_LOWCJNER0,#105,INC_OKMOVR0,#0 ; MOVR1,#0SJMPINC_OKINC_LOW:CJNER0,#0,INC_OK; MOVR1,#1INC_OK: ACALLDELAY;AJMPGENEA除于B，商放在（A）,余放在（B）LOOP2: MOVR5,KEY3MOVA,R2MOVDPTR,#DAC0832LOOP21:MOVB,KEY2DIVABMOVXDPTR,A; INC R2LOOP22:ACALLDELAY;AJMPGENEA除于B，商放在（A）,余放在（B）LOOP3: MOVR5,KEY3MOVA,3AHMOVDPTR,#DAC0832LOOP31:MOVB,KEY2DIVABMOVXDPTR, A; INC R2MOVA, R2JNZ LOOP32XRL 3AH,#0FFH；跟全1异或，相当于求反LOOP32:ACALLDELAY;AJMPGENE；延时子程序DELAY: MOV R7,#02DELAY0: MOV R4,#3DELAY1: MOV R3,#24 DJNZ R3,$ DJNZ R4,DELAY1 DJNZ R7,DELAY0 DJNZ R5,DELAY RETDELAY2: MOV R7,#02DELAY3: MOV R4,#187DELAY4: MOV R3,#248 DJNZ R3,$ DJNZ R4,DELAY4 DJNZ R7,DELAY3 RET；正弦信号数据表SINE_DATA: DB 128, 130, 132, 135, 137, 139, 141, 144, 146, 148 DB 150, 152, 155, 157, 159, 161, 163, 165, 168, 170 DB 172, 174, 176, 178, 180, 182, 184, 186, 188, 190 DB 192, 194, 196, 198, 200, 201, 203, 205, 207, 209 DB 210, 212, 214, 215, 217, 219, 220, 222, 223, 225 DB 226, 227, 229, 230, 232, 233, 234, 235, 237, 238 DB 239, 240, 241, 242, 243, 244, 245, 246, 247, 247 DB 248, 249, 250, 250, 251, 252, 252, 253, 253, 254 DB 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 DB 255, 255, 255, 255, 255, 255, 255, 255, 255, 254 DB 254, 254, 253, 253, 252, 252, 251, 250, 250, 249 DB 248, 247, 247, 246, 245, 244, 243, 242, 241, 240 DB 239, 238, 237, 235, 234, 233, 232, 230, 229, 227 DB 226, 225, 223, 222, 220, 219, 217, 215, 214, 212 DB 210, 209, 207, 205, 203, 201, 200, 198, 196, 194 DB 192, 190, 188, 186, 184, 182, 180, 178, 176, 174 DB 172, 170, 168, 165, 163, 161, 159, 157, 155, 152 DB 150, 148, 146, 144, 141, 139, 137, 135, 132, 130 DB 128, 126, 124, 121, 119, 117, 115, 112, 110, 108 DB 106, 104, 101, 99, 97, 95, 93, 91, 88, 86 DB 84, 82, 80, 78, 76, 74, 72, 70, 68, 66 DB 64, 62, 60, 58, 56, 55, 53, 51, 49, 47 DB 46, 44, 42, 41, 39, 37, 36, 34, 33, 31 DB 30, 29, 27, 26, 24, 23, 22, 21, 19, 18 DB 17, 16, 15, 14, 13, 12, 11, 10, 9, 9 DB 8, 7, 6, 6, 5, 4, 4, 3, 3, 2 DB 2, 2, 1, 1, 1, 0, 0, 0, 0, 0DB 0, 0, 0, 0, 0, 0, 1, 1, 1, 2 DB 2, 2, 3, 3, 4, 4, 5, 6, 6, 7 DB 8, 9, 9, 10, 11, 12, 13, 14, 15, 16 DB 17, 18, 19, 21, 22, 23, 24, 26, 27, 29 DB 30, 31, 33, 34, 36, 37, 39, 41, 42, 44 DB 46, 47, 49, 51, 53, 55, 56, 58, 60, 62 DB 64, 66, 68, 70, 72, 74, 76, 78, 80, 82 DB 84, 86, 88, 91, 93, 95, 97, 99, 101, 104 DB 106, 108, 110, 112, 115, 117, 119, 121, 124, 126 DB 128；外部中断1KEYINT1:PUSHPSWPUSHACCPUSHDPHPUSHDPLMOVSLA,#ZLG7290;指定器件地址MOVSUBA,#01H;指定子地址MOVNUMBYTE,#01H;发送1字节数据LCALLIRDNBYTE;调用读1字节数据程序MOVA,MRDMOVKEY, AKEY_1:CJNEA,#01H,KEY_2 INC KEY1MOVA,KEY1CJNEA,#04H,KEYENDMOVKEY1,#01HSJMPKEYENDKEY_2:CJNEA,#02H,KEY_3INC KEY2MOVA,KEY2CJNEA,#05H,KEYENDMOVKEY2,#01HSJMPKEYENDKEY_3:CJNEA,#03H,KEY_4INC KEY3MOVA,KEY3CJNEA,#05H,KEYENDMOVKEY3,#01HSJMPKEYENDKEY_4:CJNEA,#04H,KEYENDCPL FLAGCPL P1.4 KEYEND:MOVMTD,#62H;显示MOVMTD+1,KEY1 MOVSLA,#ZLG7290;指定器件地址MOVSUBA,#07H;指定子地址MOVNUMBYTE,#02H;发送2字节数据LCALLIWRNBYTE;调用写2字节数据程序LCALLDELAY2MOVMTD,#61HMOVMTD+1,KEY2 MOVSLA,#ZLG7290;指定器件地址MOVSUBA,#07H;指定子地址MOVNUMBYTE,#02H;