Then paste the driver on ADC0809 bus, but I don't know how to display the specific requirements of the landlord on LCD, so I can only save it in the array.
The hardware connection has been basically completed in the code, so I don't need to say anything else. ! ^_^
*********************************************************************
/*===========================================================================
KS0070(44780) 16x2 LCD drives the demonstration bus.
=============================================================================
Wiring diagram: LCM-51LCM-51LCM-51LCM-510.
DB0 - P0.0 DB4 - P0.4 RW - P2.0
db 1-p 0. 1 DB5-p 0.5 RC-p 2. 1
DB2-p 0.2 DB6-p 0.6 E-p 2.7 = & gt； 74ls00+wr+rd
Db3-p0.3db7-p0.7vlcd connects the 1K2 resistor to GND.
[Note]: The crystal frequency of AT89C5 1 is 12MHz.
============================================================================*/
//#pragma src // Generate an assembly file
# include & ltreg 5 1 . h & gt；
# include & ltintrins.h & gt
//= = = = = Macro definition of variable type identification, which everyone likes to do = = = = = = = = = =
# Define Uchar unsigned characters
# Define Uint unsigned integer
//= = = = = = = = = = LCM1602a port address definition = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
char xdata LCD 1602 cmd port _ at _ 0x 7 CFF； //E= 1 RS=0 RW=0
char xdata LCD 1602 wdata port _ at _ 0x 7 eff； //E = 1 RS= 1 RW=0
char xdata LCD 1602 status port _ at _ 0x 7 dff； //CS= 1 RS=0 RW= 1
# Define busy 0x80 // busy discrimination bit
For example, the code charexample [] = ". -Author Xiao Qi \ n "；;
Void Delay400Ms (invalid);
void delay 5 ms(void)；
void LcdWriteData(char dataW)；
void LcdWriteCommand( Uchar CMD，Uchar AttribC)；
void LcdReset(void)；
Invalid display (uchardd);
void DispOneChar(Uchar x，Uchar y，Uchar Wdata)；
void ePutstr(Uchar x，Uchar y，Uchar code * ptr)；
/= = = = = = = = = = = = Write a few words about the test main program = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
Invalid master (invalid)
{
Uchar temperature;
delay 400 ms()； //Necessary delay when starting, waiting for lcm to enter the working state.
LcdReset()； //This is also necessary ... initialization.
temp = 32
ePutstr(0，0，exampl)； //The upper line shows the predetermined character string.
delay 400 ms()； //Keep the display content.
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
while( 1)
{
Temperature and humidity. = 0x7f// Only ASCII characters are displayed.
if(temp & lt； 32)temp = 32； //Mask the control characters and don't show them.
Display (temp++);
delay 400 ms()；
}
}
/*=======================================================
Display string
=======================================================*/
void ePutstr(Uchar x，Uchar y，Uchar code *ptr) {
Uchar i，l = 0；
while (ptr[l]>3 1){ l++； };
for(I = 0； I & ltl；; i++) {
DispOneChar(x++，y，ptr[I])；
if ( x == 16 ){
x = 0； y ^= 1；
}
}
}
/*=======================================================
Demonstrate a continuous string and cooperate with the upper program to demonstrate the moving string.
=======================================================*/
Invalid display (Uchar dd) {
Ucal I;
for(I = 0； I< 16; i++) {
DispOneChar(i， 1，dd++)；
dd & amp= 0x7f
if(DD & lt； 32)DD = 32；
}
}
/*=======================================================
Display cursor position
=======================================================*/
void LocateXY( char posx，char posy) {
Uchar temperature;
temp = posx & amp0xf
Posey & = 0x1;
if(posy)temp | = 0x 40；
temp | = 0x80
LcdWriteCommand(temp，0)；
}
/*=======================================================
Displays characters at the specified position.
=======================================================*/
void DispOneChar(Uchar x，Uchar y，Uchar Wdata) {
LocateXY( x，y)； //Locate the display address
LcdWriteData(Wdata)； //Write characters
}
/*=======================================================
The initialization procedure must follow the initialization procedure described in the product data.
=======================================================*/
void LcdReset( void ) {
LcdWriteCommand( 0x38，0)； //Display mode setting (no busy signal detected)
delay 5 ms()；
LcdWriteCommand( 0x38，0)； //* * * three times
delay 5 ms()；
LcdWriteCommand( 0x38，0)；
delay 5 ms()；
LcdWriteCommand( 0x38， 1)； //Display mode setting (detect future busy signal)
LcdWriteCommand( 0x08， 1)； //Display off
LcdWriteCommand( 0x0 1， 1)； //Display a clear screen
LcdWriteCommand( 0x06， 1)； //Display cursor movement settings
LcdWriteCommand( 0x0c， 1)； //Display and cursor settings
}
/*=======================================================
Write control character subroutine: E= 1 RS=0 RW=0.
=======================================================*/
void LcdWriteCommand( Uchar CMD，Uchar attributec){
if(AttribC)while(LCD 1602 status port & amp； Busy); //Detected a busy signal?
LCD 1602 CMD port = CMD；
}
/*=======================================================
Write a character subroutine at the current position: E = 1 RS= 1 RW=0.
=======================================================*/
void LcdWriteData( char dataW ) {
while(LCD 1602 status port & amp； Busy); //detect busy signal
LCD 1602 wdata port = dataW；
}
//Short delay
Invalid delay 5 ms (invalid)
{
Uint i = 5552
while(I-)；
}
//Long delay
Invalid delay 400 milliseconds (invalid)
{
uchar I = 5；
uint j；
When (I-)
{
j = 7269
while(j-)；
};
}
*********************************************************************
/*===================================================================
KS0070(44780) 16x2 LCD driver demo program Xiaoqi
=====================================================================
Wiring diagram: LCM-51LCM-51LCM-51LCM-510.
DB0 - P0.0 DB4 - P0.4 RS - P2.5
db 1-p 0. 1 DB5-p 0.5 RW-p 2.6
DB2 - P0.2 DB6 - P0.6 E - P2.7
Db3-p0.3db7-p0.7vlcd connects the 1K2 resistor to GND.
[Note]: The crystal frequency of AT89C5 1 is 12MHz.
====================================================================*/
# include & ltreg 5 1 . h & gt；
# include & ltintrins.h & gt
//Macro definition of variable type identification, which everyone likes to do.
# Define Uchar unsigned characters
# Define Uint unsigned integer
//Control pin definition, different connections must be modified.
sbit RS = p2^5；
sbit rw = p2^6；
sbit elcm = p2^7；
# Define data port P0 // Data port, and the resistor must be pulled high.
# Define Busy 0x80
For example, the code charexample [] = ". -Author Xiao Qi \ n "；;
Void Delay400Ms (invalid);
void delay 5 ms(void)；
void WaitForEnable(void)；
void LcdWriteData(char dataW)；
void LcdWriteCommand( Uchar CMD，Uchar AttribC)；
void LcdReset(void)；
Invalid display (uchardd);
void DispOneChar(Uchar x，Uchar y，Uchar Wdata)；
void ePutstr(Uchar x，Uchar y，Uchar code * ptr)；
//Test the main program
Invalid master (invalid)
{
Uchar temperature;
delay 400 ms()；
LcdReset()；
temp = 32
ePutstr(0，0，exampl)； //The upper line shows the predetermined character string.
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
delay 400 ms()；
while( 1)
{
Temperature and humidity. = 0x7f// Only ASCII characters are displayed.
if(temp & lt； 32)temp = 32； //Mask the control characters and don't show them.
Display (temp++);
delay 400 ms()；
}
}
/*=======================================================
Display string
=======================================================*/
void ePutstr(Uchar x，Uchar y，Uchar code *ptr) {
Uchar i，l = 0；
while (ptr[l]>3 1){ l++； };
for(I = 0； I & ltl；; i++) {
DispOneChar(x++，y，ptr[I])；
if ( x == 16 ){
x = 0； y ^= 1；
}
}
}
/*=======================================================
Demonstrate a continuous string and cooperate with the upper program to demonstrate the moving string.
=======================================================*/
Invalid display (Uchar dd) {
Ucal I;
for(I = 0； I< 16; i++) {
DispOneChar(i， 1，dd++)；
dd & amp= 0x7f
if(DD & lt； 32)DD = 32；
}
}
/*=======================================================
Display cursor position
=======================================================*/
void LocateXY( char posx，char posy) {
Uchar temperature;
temp = posx & amp0xf
Posey & = 0x1;
if(posy)temp | = 0x 40；
temp | = 0x80
LcdWriteCommand(temp，0)；
}
/*=======================================================
Displays characters at the specified position.
=======================================================*/
void DispOneChar(Uchar x，Uchar y，Uchar Wdata) {
LocateXY( x，y)； //Locate the display address
LcdWriteData(Wdata)； //Write characters
}
/*=======================================================
The initialization procedure must follow the initialization procedure described in the product data.
=======================================================*/
void LcdReset( void ) {
LcdWriteCommand( 0x38，0)； //Display mode setting (no busy signal detected)
delay 5 ms()；
LcdWriteCommand( 0x38，0)； //* * * three times
delay 5 ms()；
LcdWriteCommand( 0x38，0)；
delay 5 ms()；
LcdWriteCommand( 0x38， 1)； //Display mode setting (detect future busy signal)
LcdWriteCommand( 0x08， 1)； //Display off
LcdWriteCommand( 0x0 1， 1)； //Display a clear screen
LcdWriteCommand( 0x06， 1)； //Display cursor movement settings
LcdWriteCommand( 0x0c， 1)； //Display and cursor settings
}
/*=======================================================
Write control character subroutine: E= 1 RS=0 RW=0.
=======================================================*/
void LcdWriteCommand( Uchar CMD，Uchar attributec){
if(AttribC)WaitForEnable()； //Detected a busy signal?
RS = 0； RW = 0； _ nop _()；
DataPort = CMD_ nop _()； //Send control word subroutine
elcm = 1； _ nop _()； _ nop _()； elcm = 0； //Run enable pulse signal
}
/*=======================================================
Write a character subroutine at the current position: E = 1 RS= 1 RW=0.
=======================================================*/
void LcdWriteData( char dataW ) {
WaitForEnable()； //detect busy signal
RS = 1； RW = 0； _ nop _()；
DataPort = dataW_ nop _()；
elcm = 1； _ nop _()； _ nop _()； elcm = 0； //Run enable pulse signal
}
/*=======================================================
The state of LCD controller must be checked before normal reading and writing operation: CS= 1 RS=0 RW= 1.
DB7: 0 LCD controller is idle; 1 LCD controller busy
========================================================*/
void WaitForEnable( void ) {
Data port = 0xff
RS = 0； RW = 1； _ nop _()； elcm = 1； _ nop _()； _ nop _()；
And (data port & busy);
elcm = 0；
}
//Short delay
Invalid delay 5 ms (invalid)
{
Uint i = 5552
while(I-)；
}
//Long delay
Invalid delay 400 milliseconds (invalid)
{
uchar I = 5；
uint j；
When (I-)
{
j = 7269
while(j-)；
};
}
*********************************************************************
# include & ltREG5 1。 H & gt
# include & ltABSACC。 H & gt
# Define uchar unsigned characters
//Channel number, which varies according to actual hardware.
# defined in 0 XBYTE[0X0000] // channel 0.
# defined in 1 XBYTE[0X000 1]
# Define IN2 XBYTE[0X0002]
# defined in 3 XBYTE[0X0003]
# defined in 4 XBYTE[0X0004]
# defined in 5 XBYTE[0X0005]
# defined in 6 XBYTE[0X0006]
# defined in 7 XBYTE[0X0007]
sbit ad_busy=p3^5；
void ad 0809(uchar idata * x)；
//After calling this program, analog quantity should be converted into digital quantity and stored in the array of adcRes[].
void AD0809(uchar idata *adcRes)
{
Ucal I;
data uchar xdata * ad _ adr
Ad _ ADR =&in0//points to the first channel.
for(I = 0； I<8; i++) {
* ad _ ADR = 0； //start AD conversion
ad _ busy = 0； //0 is found to be correct after debugging.
while(ad _ busy = = 0)； //Wait for the AD conversion to end.
adcRes[I]= * ad _ ADR； //Save the conversion result
ad _ adr++； //Next channel
}
}