#include
/** define macros **/
sfr ldata =0x90;
sbit rs =P2^2;
sbit rw =P2^1;
sbit en =P2^0;
/**define private function prototype**/
void ini (void);
void lcdcmd (unsigned char );
void lcddata (unsigned char );
void MSDelay (unsigned int );
void Tx (unsigned char );
/* define global variables */
unsigned char k = 0,serial;
bit flag1=0,flag2=0,flag3=0,flag4=0;
/** main start here **/
void main (void)
{
TMOD = 0x20; // enable timer1 in auto reload mode
TH1 = 0xFD; // set 9600 baud rate
SCON = 0x50; // enable uart for serial communication
TR1 = 1; // start timer1
Tx ('W'); // send "welcome" to serial port
Tx ('e');
Tx ('l');
Tx ('c');
Tx ('o');
Tx ('m');
Tx ('e');
ini (); // initialize the lcd
lcdcmd (0x80); // set address for first character in first line
lcddata ('D'); Tx ('D'); // display "DEV1 = 0" on lcd and send to serial port
lcddata ('E'); Tx ('E');
lcddata ('V'); Tx ('V');
lcddata ('1'); Tx ('1');
lcddata ('='); Tx ('=');
lcddata ('0'); Tx ('0'); Tx (' '); Tx (' ');
lcdcmd (0x88); // set address of 8th character in first line
lcddata ('D'); Tx ('D'); // display "DEV2 = 0" on lcd and send to serial port
lcddata ('E'); Tx ('E');
lcddata ('V'); Tx ('V');
lcddata ('2'); Tx ('2');
lcddata ('='); Tx ('=');
lcddata ('0'); Tx ('0'); Tx (' ');Tx (' ');
lcdcmd (0xC0); // set address of first character in second line
lcddata ('D'); Tx ('D'); // display "DEV3 = 0" on lcd and send to serial port
lcddata ('E'); Tx ('E');
lcddata ('V'); Tx ('V');
lcddata ('3'); Tx ('3');
lcddata ('='); Tx ('=');
lcddata ('0'); Tx ('0');Tx (' ');Tx (' ');
lcdcmd (0xC8); // set address of 8th character in second line
lcddata ('D'); Tx ('D'); // display "DEV4 = 0" on lcd and send to serial port
lcddata ('E'); Tx ('E');
lcddata ('V'); Tx ('V');
lcddata ('4'); Tx ('4');
lcddata ('='); Tx ('=');
lcddata ('0'); Tx ('0'); Tx (' ');Tx (' ');
P0 = 1; // configure port p0 as input
while (1) // start infinite loop
{
if (P0_0==1)
{
while (P0_0);
MSDelay (10);
P2_3 = ~P2_3; // toggle pin P2_3
flag1 = ~flag1; // toggle flag1
if (flag1)
{
lcdcmd (0x80);
lcddata ('D'); // display "DEV1 = 1" on lcd and send to serial port
lcddata ('E');
lcddata ('V');
lcddata ('1');
lcddata ('=');
lcddata ('1');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('1');
Tx ('=');
Tx ('1');
Tx (' ');
Tx (' ');
}
else
{
lcdcmd (0x80);
lcddata ('D'); // display "DEV1 = 0" on lcd and send to serial port
lcddata ('E');
lcddata ('V');
lcddata ('1');
lcddata ('=');
lcddata ('0');
Tx ('D');
Tx ('E');Tx ('1');
Tx ('=');
Tx ('V');
Tx ('0');
Tx (' ');
Tx (' ');
}
}
if (P0_1==1)
{
while (P0_1);
MSDelay (10); // toggle pin P2.4
P2_4 = ~P2_4; // toggle flag2
flag2 = ~flag2;
if (flag2)
{
lcdcmd (0x88);
lcddata ('D');
lcddata ('E'); // display "DEV2 = 1" on lcd and send to serial port
lcddata ('V');
lcddata ('2');
lcddata ('=');
lcddata ('1');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('2');
Tx ('=');
Tx ('1');
Tx (' ');
Tx (' ');
}
else
{
lcdcmd (0x88);
lcddata ('D');
lcddata ('E'); // display "DEV2 = 0" on lcd and send to serial port
lcddata ('V');
lcddata ('2');
lcddata ('=');
lcddata ('0');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('2');
Tx ('=');
Tx ('0');
Tx (' ');
Tx (' ');
}
}
if (P0_2==1)
{
while (P0_2);
MSDelay (10);
P2_5 = ~P2_5; // toggle pin P2.5
flag3 = ~flag3; // toggle flag3
if (flag3)
{
lcdcmd (0xC0); // display "DEV3 = 0" on lcd and send to serial port
lcddata ('D');
lcddata ('E');
lcddata ('V');
lcddata ('3');
lcddata ('=');
lcddata ('1');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('3');
Tx ('=');
Tx ('1');
Tx (' ');
Tx (' ');
}
else
{
lcdcmd (0xC0);
lcddata ('D');
lcddata ('E'); // display "DEV3 = 0" on lcd and send to serial port
lcddata ('V');
lcddata ('3');
lcddata ('=');
lcddata ('0');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('3');
Tx ('=');
Tx ('0');
Tx (' ');
Tx (' ');
}
}
if (P0_3==1)
{
while (P0_3);
MSDelay (10);
P2_6 = ~P2_6; // toggle P2.6
flag4 = ~flag4; // toggle flag4
if (flag4)
{
lcdcmd (0xC8);
lcddata ('D');
lcddata ('E');
lcddata ('V'); // display "DEV4 = 1" on lcd and send to serial port
lcddata ('4');
lcddata ('=');
lcddata ('1');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('4');
Tx ('=');
Tx ('1');
Tx (' ');
Tx (' ');
}
else
{
lcdcmd (0xC8);
lcddata ('D');
lcddata ('E'); // display "DEV4 = 0" on lcd and send to serial port
lcddata ('V');
lcddata ('4');
lcddata ('=');
lcddata ('0');
Tx ('D');
Tx ('E');
Tx ('V');
Tx ('4');
Tx ('=');
Tx ('0');
Tx (' ');
Tx (' ');
}
}
}
}
void ini () // lcd initialize function
{
lcdcmd (0x38);
lcdcmd (0x0e);
lcdcmd (0x01);
lcdcmd (0x06);
}
void lcdcmd (unsigned char value ) // write commands to lcd
{
// lcdready ();
ldata = value;
rs = 0;
rw = 0;
en = 1;
MSDelay (1);
en = 0 ;
}
void lcddata ( unsigned char value ) //write data to lcd for display
{
// lcdready ();
ldata = value;
rs = 1;
rw = 0;
en = 1;
MSDelay (1);
en =0;
}
void MSDelay (unsigned int itime ) // to generate the delay in progran
{
unsigned int i,j;
for (i=0;i for (j=0;j<900;j++);
}
void Tx (unsigned char value) // to send the data on serial port
{
SBUF = value;
while (TI == 0);
TI = 0;
}
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| Author: ashutosh | Member Level: Silver | Revenue Score:  |
Please provide the interface diagram.The code looks fine and understandable.
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| Author: venugopal | Member Level: Silver | Revenue Score: |
hi
the comments for the code and the relevant circuit diagram for the project would have been good
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