89C51, 89C2051, Serial data using C

[Micro Lover]

Hi

I am designing digital clock using 89c51, approximately every thing is complete successfully, but I want to make a one master clock that will send serial data to slave clocks, and slave clocks will show that received data. In the slave clocks I want to use 89C2051, due to its small size. I am not a student, and I have not too much background knowledge about electronic, I want to make it for a fun.

Problem.
-----------
How can I send (serial) data using 89C51, and receive it using 89C2051.
e.g

unsigned char sec=55, min=58, hour=23

How can I send “55”, “58” and “23”.

And how can I receive it

 

[e shade]

Using the RX and TX pins in the microcontrollers you can communicate and also by using the UART program.

 

[andre_luis]

This way :

To receive - https://www.edaboard.com/threads/207367/
To send - https://www.edaboard.com/threads/198359/

+++

 

[romel_emperado]

Hi

hope it can help you.. just apply this code... I've been using this some of my problems...

unsigned char serial_read() // read single byte from UART
{
	unsigned char ch;
	while(!RI);			//waits till a byte is recieved
	ch = SBUF;
	RI = 0;
	return(ch);
  
}

/* function to send char */
void serial_send(unsigned char send)
{
	SBUF = send;
	while(!TI);
	TI = 0;
}

/* function to send string */
void serial_sendstr(unsigned char *p)
{
	while(*p!='\0')
	serial_send(*p++);
}