//主程序

#include"LCD12864.h"

//精度要根据你的基准电压/1024来计算出来！要注意
#define TLCPER 0.00421
uchar code Tlc_Table[]="0123456789";
uchar Tlc_Display[]="0.0000 V";

extern uint Tlc1549(void);

void GetDisplayVoltage()
{
uchar a,b,c,d,e;
uint tmp;
unsigned long value;
tmp = Tlc1549(); //sampling
value = tmp * (TLCPER * 10000) ; //放大10000倍,48~50000

a = (value / 10000) % 10;
b = (value / 1000) % 10;
c = (value / 100) % 10;
d = (value / 10) % 10;
e = value % 10;

Tlc_Display[0]=Tlc_Table[a];
Tlc_Display[2]=Tlc_Table[b];
Tlc_Display[3]=Tlc_Table[c];
Tlc_Display[4]=Tlc_Table[d];
Tlc_Display[5]=Tlc_Table[e];
}
void main()
{

Delay400Ms(); //启动等待，等LCD讲入工作状态
LCDInit(); //LCM初始化
while(1){
GetDisplayVoltage();
DisplayListChar(0,1,Tlc_Display);
}
}

//汇编语言源程序

NAME TLC1549

TLC_SCL BIT P1.7 //TLC1549引脚定义
TLC_SDA BIT P1.6
TLC_CS BIT P1.5

PR Tlc1549 TLC1549 SEGMENT CODE
DT Tlc1549 TLC1549 SEGMENT DATA OVERLAYABLE
PUBLIC Tlc1549

RSEG DT Tlc1549 TLC1549
Tlc1549 BYTE:
temp 040: DS 2

RSEG PR Tlc1549 TLC1549
Tlc1549:
USING 0
; {
PUSH PSW
MOV R5,#10 ;ten clock for ready work
SETB TLC_CS
CLR TLC_SCL
NOP
NOP
READY:
SETB TLC_SCL
NOP
NOP
CLR TLC_SCL
DJNZ R5,READY
CLR TLC_CS
NOP
NOP
SETB TLC_CS
MOV A,#0
CLR EA ;stop break
CLR TLC_CS
NOP
NOP
SETB TLC_SCL
CLR C ;get first two bit
MOV C,TLC_SDA ;get first MSB
RLC A
CLR TLC_SCL
NOP
CLR C
SETB TLC_SCL
MOV C,TLC_SDA ;get secondary MSB
RLC A
MOV temp 040,A ;get two MSB
CLR TLC_SCL
MOV R5,#8 ;get last eight bit
MOV A,#0
LOWBIT:
SETB TLC_SCL
CLR C
MOV C,TLC_SDA
RLC A
CLR TLC_SCL
DJNZ R5,LOWBIT
MOV temp 040+01H,A ;gain last eight bit

MOV R6,temp 040
MOV R7,temp 040+01H

; } ; SOURCE LINE # 7
C0001:
POP PSW
SETB EA ;allow break
RET
; END OF Tlc1549

END

//LCD12864.c

#include"LCD12864.h"
//写数据
void WriteDataLCD(uchar WDLCD)
{
ReadStatusLCD(); //检测忙
LCD_RS = 1;
LCD_RW = 0;
LCD_Data = WDLCD;
LCD_E = 1;
LCD_E = 1;
LCD_E = 1;
LCD_E = 0;
}

//写指令
void WriteCommandLCD(uchar WCLCD,BuysC) //BuysC为0时忽略忙检测
{
if (BuysC) ReadStatusLCD(); //根据需要检测忙
LCD_RS = 0;
LCD_RW = 0;
LCD_Data = WCLCD;
LCD_E = 1;
LCD_E = 1;
LCD_E = 1;
LCD_E = 0;
}

//读数据
uchar ReadDataLCD(void)
{
LCD_RS = 1;
LCD_RW = 1;
LCD_E = 0;
LCD_E = 0;
LCD_E = 1;
return(LCD_Data);
}

//读状态
uchar ReadStatusLCD(void)
{
LCD_Data = 0xFF;
LCD_RS = 0;
LCD_RW = 1;
LCD_E = 1;
while (LCD_Data & Busy); //检测忙信号
LCD_E = 0;
return(LCD_Data);
}