Andy first sorry for saying KEIL C++, if is really ANSI 'C' compiler.

Also please explain your statement "You seem to be mixing int and char with gay abandon".


Gopalakrishnan…….. that's negative. It checked it and make sure its not working on the actual board. (there is no problem in board as I am working with another system on the same board).


Let me try to format the program.

#include <AT89x55.h> 
#include <intrins.h> 
void Simple_Delay_N_Fifty(int); 
void Simple_Delay_Fifty_Milliseconds(void); 
void initComm(void); 
void SendComChar(unsigned char); 

sbit zoneOnOff = P2^7; 
int temp, temp2; 
unsigned char chrRec; 


void main(void) 
{ 
unsigned char c; 
//--------------------------- 
// These two statements will initialize the time for Delay's 
TMOD |= 0x01; 
ET0 = 0; 
//--------------------------- 
Simple_Delay_N_Fifty(20); 
initComm(); 
c = 20; 
temp2 = 0; 

	while(1) 
	{ 
		zoneOnOff = 0; 
		Simple_Delay_N_Fifty(20); 
		zoneOnOff = 1; 
		Simple_Delay_N_Fifty(20); 

		//HERE NOW THE PROGRAM IS WORKING FIND 
		//BUT IF I UNCOMMENT THE FOLLOWING 
		//Statement the program stops working 


		//SendComChar(1); 
		c++; 
	} 
} 


void Simple_Delay_N_Fifty(int n) 
{ 
	for(temp=0;temp<n;temp++) 
	{ 
		Simple_Delay_Fifty_Milliseconds(); 
	} 
} 


void Simple_Delay_Fifty_Milliseconds() 
{ 

	TR0 = 0; 
	TH0 = 0x4B; 
	TL0 = 0xFD; 
	TF0 = 0; 
	TR0 = 1; 
	while(TF0 == 0); 
	TR0 = 0; 
} 


void initComm(void) 
{ 
	//----------- 	
	//TMOD = 0x21; 
	TMOD |= 0x21; 
	TH1 = 0xe6; 
	TCON = 0x00; 

	SCON = 0x50; 
	ET0 = 0; 
	TR1 = 1; 
	//---------- 
} 


void SendComChar(unsigned char c) 
{ 
	temp = c; 
}