?? da-ad.src
字號:
; DA-AD.SRC generated from: DA-AD.C
; COMPILER INVOKED BY:
; C:\Keil\C51\BIN\C51.EXE DA-AD.C BROWSE DEBUG OBJECTEXTEND
$NOMOD51
NAME DA_AD
LS138B BIT 0A0H.3
LS138C BIT 0A0H.4
P0 DATA 080H
P1 DATA 090H
P2 DATA 0A0H
P3 DATA 0B0H
T0 BIT 0B0H.4
AC BIT 0D0H.6
T1 BIT 0B0H.5
T2 BIT 090H.0
EA BIT 0A8H.7
IE DATA 0A8H
EXF2 BIT 0C8H.6
RD BIT 0B0H.7
ES BIT 0A8H.4
IP DATA 0B8H
RI BIT 098H.0
INT0 BIT 0B0H.2
CY BIT 0D0H.7
TI BIT 098H.1
INT1 BIT 0B0H.3
RCAP2H DATA 0CBH
PS BIT 0B8H.4
SP DATA 081H
T2EX BIT 090H.1
OV BIT 0D0H.2
RCAP2L DATA 0CAH
C_T2 BIT 0C8H.1
WR BIT 0B0H.6
RCLK BIT 0C8H.5
TCLK BIT 0C8H.4
SBUF DATA 099H
PCON DATA 087H
SCON DATA 098H
TMOD DATA 089H
TCON DATA 088H
IE0 BIT 088H.1
IE1 BIT 088H.3
B DATA 0F0H
CP_RL2 BIT 0C8H.0
ACC DATA 0E0H
ET0 BIT 0A8H.1
ET1 BIT 0A8H.3
TF0 BIT 088H.5
ET2 BIT 0A8H.5
TF1 BIT 088H.7
TF2 BIT 0C8H.7
RB8 BIT 098H.2
TH0 DATA 08CH
EX0 BIT 0A8H.0
IT0 BIT 088H.0
TH1 DATA 08DH
TB8 BIT 098H.3
EX1 BIT 0A8H.2
IT1 BIT 088H.2
TH2 DATA 0CDH
P BIT 0D0H.0
SM0 BIT 098H.7
TL0 DATA 08AH
SM1 BIT 098H.6
TL1 DATA 08BH
SM2 BIT 098H.5
TL2 DATA 0CCH
PT0 BIT 0B8H.1
PT1 BIT 0B8H.3
RS0 BIT 0D0H.3
PT2 BIT 0B8H.5
TR0 BIT 088H.4
RS1 BIT 0D0H.4
TR1 BIT 088H.6
TR2 BIT 0C8H.2
PX0 BIT 0B8H.0
PX1 BIT 0B8H.2
DPH DATA 083H
DPL DATA 082H
EXEN2 BIT 0C8H.3
REN BIT 098H.4
T2CON DATA 0C8H
RXD BIT 0B0H.0
TXD BIT 0B0H.1
F0 BIT 0D0H.5
PSW DATA 0D0H
LS138A BIT 0A0H.2
?PR?_DACconversion?DA_AD SEGMENT CODE
?DT?_DACconversion?DA_AD SEGMENT DATA OVERLAYABLE
?PR?_ISendByte?DA_AD SEGMENT CODE
?DT?_ISendByte?DA_AD SEGMENT DATA OVERLAYABLE
?PR?_IRcvByte?DA_AD SEGMENT CODE
?DT?_IRcvByte?DA_AD SEGMENT DATA OVERLAYABLE
?PR?main?DA_AD SEGMENT CODE
?DT?main?DA_AD SEGMENT DATA OVERLAYABLE
?CO?DA_AD SEGMENT CODE
?DT?DA_AD SEGMENT DATA
?XD?DA_AD SEGMENT XDATA
EXTRN CODE (_SendByte)
EXTRN BIT (ack)
EXTRN CODE (RcvByte)
EXTRN CODE (Ack_I2c)
EXTRN BIT (?Ack_I2c?BIT)
EXTRN CODE (Start_I2c)
EXTRN CODE (Stop_I2c)
EXTRN CODE (?C_STARTUP)
EXTRN CODE (?C?UIDIV)
EXTRN CODE (?C?LSTXDATA)
PUBLIC AD_CHANNEL
PUBLIC LedOut
PUBLIC D
PUBLIC Disp_Tab
PUBLIC main
PUBLIC _IRcvByte
PUBLIC _ISendByte
PUBLIC _DACconversion
RSEG ?DT?main?DA_AD
?main?BYTE:
i?347: DS 1
RSEG ?DT?_ISendByte?DA_AD
?_ISendByte?BYTE:
sla?143: DS 1
c?144: DS 1
RSEG ?DT?_IRcvByte?DA_AD
?_IRcvByte?BYTE:
sla?245: DS 1
ORG 1
c?246: DS 1
RSEG ?DT?_DACconversion?DA_AD
?_DACconversion?BYTE:
sla?040: DS 1
c?041: DS 1
Val?042: DS 1
RSEG ?DT?DA_AD
D: DS 64
AD_CHANNEL: DS 1
RSEG ?XD?DA_AD
LedOut: DS 32
RSEG ?CO?DA_AD
Disp_Tab:
DB 0C0H
DB 0F9H
DB 0A4H
DB 0B0H
DB 099H
DB 092H
DB 082H
DB 0F8H
DB 080H
DB 090H
DB 088H
DB 083H
DB 0C6H
DB 0A1H
DB 086H
DB 0BFH
DB 0C7H
DB 08CH
DB 0C1H
DB 0FFH
DB 0F7H
; /**********************************************************************************
; * 標(biāo)題: ************* DA-AD試驗******************* *
; * *
; * 1.通過本例程了解并掌握AD-DA轉(zhuǎn)換芯片的基本原理和使用 *
; * 2.了解掌握I2C總線接口的工作原理及一般編程方法。
; *
; * 連接方法：JP8 （P1）與J12用跳線連接 *
; * *
; * 通過改變學(xué)習(xí)板上的2個電位器對應(yīng)的2段模擬輸入，實現(xiàn)模擬輸入，學(xué)員觀察數(shù)碼管的數(shù)字變化情況
; * 通過改D[4]的值，實現(xiàn)模擬輸出，學(xué)員觀察學(xué)習(xí)板上DA處LED的亮度變化 *
; * *
; * 請學(xué)員認(rèn)真消化本例程，懂得AD-DA 在C語言中的操作應(yīng)用 *
; ***********************************************************************************/
; #include<reg52.h>
; #include <I2C.H>
;
; #define PCF8591 0x90 //PCF8591 地址
;
;
; //else IO
; sbit LS138A=P2^2;
; sbit LS138B=P2^3;
; sbit LS138C=P2^4;
;
; // 此表為 LED 的字模 // 0 1 2 3 4 5 6 7 8 9 A b c d E - L P U Hidden _ (20)
; unsigned char code Disp_Tab[] = { 0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0xbf,0xc7,0x8c,0xc1, 0xff, 0xf7 };
;
; unsigned char AD_CHANNEL;
; unsigned long xdata LedOut[8];
; unsigned int D[32];
;
;
; /*******************************************************************
; DAC 變換, 轉(zhuǎn)化函數(shù)
; *******************************************************************/
; bit DACconversion(unsigned char sla,unsigned char c, unsigned char Val)
RSEG ?PR?_DACconversion?DA_AD
_DACconversion:
USING 0
; SOURCE LINE # 37
MOV sla?040,R7
MOV c?041,R5
MOV Val?042,R3
; {
; SOURCE LINE # 38
; Start_I2c(); //啟動總線
; SOURCE LINE # 39
LCALL Start_I2c
; SendByte(sla); //發(fā)送器件地址
; SOURCE LINE # 40
MOV R7,sla?040
LCALL _SendByte
; if(ack==0)return(0);
; SOURCE LINE # 41
JB ack,?C0001
CLR C
RET
?C0001:
; SendByte(c); //發(fā)送控制字節(jié)
; SOURCE LINE # 42
MOV R7,c?041
LCALL _SendByte
; if(ack==0)return(0);
; SOURCE LINE # 43
JB ack,?C0003
CLR C
RET
?C0003:
; SendByte(Val); //發(fā)送DAC的數(shù)值
; SOURCE LINE # 44
MOV R7,Val?042
LCALL _SendByte
; if(ack==0)return(0);
; SOURCE LINE # 45
JB ack,?C0004
CLR C
RET
?C0004:
; Stop_I2c(); //結(jié)束總線
; SOURCE LINE # 46
LCALL Stop_I2c
; return(1);
; SOURCE LINE # 47
SETB C
; }
; SOURCE LINE # 48
?C0002:
RET
; END OF _DACconversion
;
; /*******************************************************************
; ADC發(fā)送字節(jié)[命令]數(shù)據(jù)函數(shù)
; *******************************************************************/
; bit ISendByte(unsigned char sla,unsigned char c)
RSEG ?PR?_ISendByte?DA_AD
_ISendByte:
USING 0
; SOURCE LINE # 53
MOV sla?143,R7
MOV c?144,R5
; {
; SOURCE LINE # 54
; Start_I2c(); //啟動總線
; SOURCE LINE # 55
LCALL Start_I2c
; SendByte(sla); //發(fā)送器件地址
; SOURCE LINE # 56
MOV R7,sla?143
LCALL _SendByte
; if(ack==0)return(0);
; SOURCE LINE # 57
JB ack,?C0005
CLR C
RET
?C0005:
; SendByte(c); //發(fā)送數(shù)據(jù)
; SOURCE LINE # 58
MOV R7,c?144
LCALL _SendByte
; if(ack==0)return(0);
; SOURCE LINE # 59
JB ack,?C0007
CLR C
RET
?C0007:
; Stop_I2c(); //結(jié)束總線
; SOURCE LINE # 60
LCALL Stop_I2c
; return(1);
; SOURCE LINE # 61
SETB C
; }
; SOURCE LINE # 62
?C0006:
RET
; END OF _ISendByte
;
; /*******************************************************************
; ADC讀字節(jié)數(shù)據(jù)函數(shù)
; *******************************************************************/
; unsigned char IRcvByte(unsigned char sla)
RSEG ?PR?_IRcvByte?DA_AD
_IRcvByte:
USING 0
; SOURCE LINE # 67
MOV sla?245,R7
; { unsigned char c;
; SOURCE LINE # 68
;
; Start_I2c(); //啟動總線
; SOURCE LINE # 70
LCALL Start_I2c
; SendByte(sla+1); //發(fā)送器件地址
; SOURCE LINE # 71
MOV A,sla?245
INC A
MOV R7,A
LCALL _SendByte
; if(ack==0)return(0);
; SOURCE LINE # 72
JB ack,?C0008
MOV R7,#00H
RET
?C0008:
; c=RcvByte(); //讀取數(shù)據(jù)0
; SOURCE LINE # 73
LCALL RcvByte
MOV c?246,R7
;
; Ack_I2c(1); //發(fā)送非就答位
; SOURCE LINE # 75
SETB ?Ack_I2c?BIT
LCALL Ack_I2c
; Stop_I2c(); //結(jié)束總線
; SOURCE LINE # 76
LCALL Stop_I2c
; return(c);
; SOURCE LINE # 77
MOV R7,c?246
; }
; SOURCE LINE # 78
?C0009:
RET
; END OF _IRcvByte
;
; //******************************************************************/
; main()
RSEG ?PR?main?DA_AD
main:
USING 0
; SOURCE LINE # 81
; { char i,j;
; SOURCE LINE # 82
?C0010:
;
; while(1)
; SOURCE LINE # 84
; {/********以下AD-DA處理*************/
; SOURCE LINE # 85
; switch(AD_CHANNEL)
; SOURCE LINE # 86
MOV A,AD_CHANNEL
DEC A
JZ ?C0014
DEC A
JZ ?C0015
DEC A
JZ ?C0016
DEC A
JZ ?C0017
ADD A,#04H
JNZ ?C0012
; {
; SOURCE LINE # 87
; case 0: ISendByte(PCF8591,0x41);
; SOURCE LINE # 88
?C0013:
MOV R5,#041H
MOV R7,#090H
LCALL _ISendByte
; D[0]=IRcvByte(PCF8591)*2; //ADC0 模數(shù)轉(zhuǎn)換1
; SOURCE LINE # 89
MOV R7,#090H
LCALL _IRcvByte
MOV A,R7
MOV B,#02H
MUL AB
MOV D,B
MOV D+01H,A
; break;
; SOURCE LINE # 90
SJMP ?C0012
;
; case 1: ISendByte(PCF8591,0x42);
; SOURCE LINE # 92
?C0014:
MOV R5,#042H
MOV R7,#090H
LCALL _ISendByte
; D[1]=IRcvByte(PCF8591)*2; //ADC1 模數(shù)轉(zhuǎn)換2
; SOURCE LINE # 93
MOV R7,#090H
LCALL _IRcvByte
MOV A,R7
MOV B,#02H
MUL AB
MOV D+02H,B
MOV D+03H,A
; break;
; SOURCE LINE # 94
SJMP ?C0012
;
; case 2: ISendByte(PCF8591,0x43);
; SOURCE LINE # 96
?C0015:
MOV R5,#043H
MOV R7,#090H
LCALL _ISendByte
; D[2]=IRcvByte(PCF8591)*2; //ADC2 模數(shù)轉(zhuǎn)換3
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