📄 ad7703.lst
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C51 COMPILER V3.20, SN-0 AD7703 07/09/02 14:55:06 PAGE 1
DOS C51 COMPILER V3.20, COMPILATION OF MODULE AD7703
OBJECT MODULE PLACED IN AD7703.OBJ
COMPILER INVOKED BY: D:\QTH8052F\BIN\C51.EXE AD7703.C OBJECTEXTEND DB SB
stmt level source
1 /*
* ad7703.c
*
* AD7703
*
*
*
* 陈真勇(SA01010010)
* w3wind@sina.com or
* zychen@ustc.edu.cn
* 中国科学技术大学自动化系
* 2002/6/12
*/
14
15 #include "type.h"
16 #include "delay.h"
17 #include "link.h"
18 #include "watchdog.h"
19
20 void selfcal()
21 {
22 1 BYTE i;
23 1
24 1 ADCS=1;
25 1 ADCAL=1;
26 1 delay10us();
27 1 /* note: Self calibration last for at least 4 cycle clocks,
and AD7703's main clock is 2M Hz. Our AT89C52 is
12 MHz,so we put 4 NOP instructions here. If frequency
changed, you should change number of NOPs accordingly.*/
31 1 ADCAL=0;
32 1 }
33
34 UINT read_ad()
35 {
36 1 BYTE i=20; /* 20 bits to be read */
37 1 UINT mask=0x8000;
38 1 UINT result=0;
39 1
40 1 do{}while( ADDRDY );
41 1
42 1 EA = 0;
43 1
44 1 /*read first 16 bits of total 20 bits*/
45 1 ADCS=1;
46 1 ADCS=0;
47 1
48 1 do{
49 2 ADSCLK=1;/* data valid on rising edge */
50 2
51 2 if(i>4 && ADSDATA){ /* max delay 75 ns before data valid. first check i>4*/
52 3 result |= mask;
53 3 }
54 2 mask >>= 1;
55 2
C51 COMPILER V3.20, SN-0 AD7703 07/09/02 14:55:06 PAGE 2
56 2 ADSCLK=0;/* data changed on falling_edge */
57 2 }while(--i);
58 1
59 1 ADCS=1;
60 1
61 1 EA = 1;
62 1
63 1 return result;
64 1 }
65
66 void init_ad7703()
67 {
68 1 BYTE i;
69 1 selfcal();/*self calibration*/
70 1 /*we must wait for 3,500,000 clock cycles befor can access AD7703. It's
about 2s long*/
72 1 /* ????????????????????? */
73 1 for(i=0;i<20;i++){
74 2 /* TODO: you should clear watch dog while waiting.
you should provide delay function that delay
1 ms */
77 2 clear_watchdog();
78 2 delay(100);
79 2 }
80 1 }
C51 COMPILER V3.20, SN-0 AD7703 07/09/02 14:55:06 PAGE 3
NAME CLASS MSPACE TYPE OFFSET SIZE
==== ===== ====== ==== ====== ====
CANLAMP. . . . . . . . . . . . . . . . ABSBIT ----- BIT 0096H 1
P1 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 0090H 1
P2 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00A0H 1
P3 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00B0H 1
T0 . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B4H 1
AC . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D6H 1
T1 . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B5H 1
T2 . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0090H 1
EA . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00AFH 1
HC245DIR . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A1H 1
ADS1 . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A5H 1
ADS2 . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A4H 1
ADS3 . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A3H 1
DQ . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0097H 1
T2IE . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00CDH 1
RD . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B7H 1
ES . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00ACH 1
RI . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0098H 1
ADCS . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0094H 1
INT0 . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B2H 1
CY . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D7H 1
BGEN . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00CBH 1
TI . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0099H 1
INT1 . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B3H 1
T2IP . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00CEH 1
PS . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00BCH 1
T2EX . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0091H 1
OV . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D2H 1
C_T2 . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00C9H 1
WR . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B6H 1
init_ad7703. . . . . . . . . . . . . . PUBLIC CODE PROC ----- -----
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
_?delay. . . . . . . . . . . . . . . . EXTERN CODE PROC ----- -----
WDCS . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0090H 1
ADSCLK . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B1H 1
WDSI . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0091H 1
ADDRDY . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B3H 1
X25045SCK. . . . . . . . . . . . . . . ABSBIT ----- BIT 0092H 1
IE0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0089H 1
IE1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008BH 1
clear_watchdog . . . . . . . . . . . . EXTERN CODE PROC ----- -----
read_ad. . . . . . . . . . . . . . . . PUBLIC CODE PROC ----- -----
i. . . . . . . . . . . . . . . . . . * REG * DATA U_CHAR 0001H 1
mask . . . . . . . . . . . . . . . . * REG * DATA U_INT 0004H 2
result . . . . . . . . . . . . . . . * REG * DATA U_INT 0002H 2
CP_RL2 . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00C8H 1
ET0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A9H 1
ET1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00ABH 1
TF0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008DH 1
ET2. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00ADH 1
TF1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008FH 1
TF2. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00CFH 1
RB8. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 009AH 1
EX0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A8H 1
IT0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0088H 1
TB8. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 009BH 1
EX1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00AAH 1
C51 COMPILER V3.20, SN-0 AD7703 07/09/02 14:55:06 PAGE 4
NAME CLASS MSPACE TYPE OFFSET SIZE
==== ===== ====== ==== ====== ====
IT1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008AH 1
P. . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D0H 1
SM0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 009FH 1
SM1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 009EH 1
SM2. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 009DH 1
PT0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B9H 1
PT1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00BBH 1
RS0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D3H 1
ADCAL. . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0095H 1
PT2. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00BDH 1
TR0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008CH 1
RS1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D4H 1
TR1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 008EH 1
TR2. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00CAH 1
PX0. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B8H 1
PX1. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00BAH 1
delay10us. . . . . . . . . . . . . . . EXTERN CODE PROC ----- -----
selfcal. . . . . . . . . . . . . . . . PUBLIC CODE PROC ----- -----
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
REN. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 009CH 1
CANCS. . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A7H 1
HC245G . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A6H 1
RXD. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B0H 1
X25045CS . . . . . . . . . . . . . . . ABSBIT ----- BIT 0090H 1
TXD. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B1H 1
T2RSE. . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00CCH 1
ADSDATA. . . . . . . . . . . . . . . . ABSBIT ----- BIT 00B0H 1
F0 . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00D5H 1
X25045SI . . . . . . . . . . . . . . . ABSBIT ----- BIT 0091H 1
X25045SO . . . . . . . . . . . . . . . ABSBIT ----- BIT 0093H 1
WDSCK. . . . . . . . . . . . . . . . . ABSBIT ----- BIT 0092H 1
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 93 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 2
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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