Help Needed: P18F452 and Serial Port

[medorpg]

Hi,
I Really need your help in connecting my PIC18F452 to PC

I don't know where to start
if there's any book or a tutorial which is suitable to my PIC it would be great

I have the Max232 chip and the needed hardware



What I mainly need is
sending strings from the PIC to the PC Terminal

and sending chars from PC Terminal to PIC

it's a project in my college PLEASE HELP

 

[vijay s]

oops... you forget to inform what compiler you are using??
Any how i have given the code For Hi-Tech compiler

use below function to send a character from PIC to PC

void putcUART(unsigned char Chr)
{
	while(!TXSTAbits.TRMT);
	TXREG = Chr;
	while(!TXSTAbits.TRMT);
}

use below function to send string from PIC to PC

void putrsUART(const unsigned char *str)
{
	while(*str)
	{
		while(!TXSTAbits.TRMT);
		putchUART(*str++);
	}
}

Reply what compiler u are using and what exactly u need

__
Click Helped Button if it helps you

 

[medorpg]

Sorry,
I'm using MikroC
and for simulation I use Proteus ISIS

I am using C for programming, What language you used here ?

 

[vijay s]

The program i wrote above is for Hi-Tech Compiler in C Language....

if you are using MikroC, ur work is very simple....
MikroC comes with rich library.. goto Help file and search for UART Functions.. it will show you the library functions to send string from PIC to PC...

and there will be an function to accept character from PC in PIC... use that function in interrupt ISR ,so every time you get a character from PC, u can read that....

use MikroC Help file and Search this Forum for existing discussion

 

[medorpg]

I used the Usart_Init(9600); command

then Usart_Write(CC);

CC is a char variable

but nothing works

please help

 

[vijay s]

I'm not familiar with MikroC library files....
check ur Hardware.... check the voltage level in MAX232 chip as specified in Datasheet....

Config receiver pin of RX as input and TX pin as Output.. read Help file about using UART..

 

[medorpg]

I'll do that

Thank you

 

[sumiii]

I want to convert hex(result generated from A/D) to ASCII in order to transmit serially data.
Plz help me

 

[hussain_kiet]

I want to convert hex(result generated from A/D) to ASCII in order to transmit serially data.
Plz help me

do you want to transmit ascii equivalent of hex value or ascii equivalent of decimal value...
eg ADC read 0xFF which is 255 in decimal now what you want to transmit
"FF" ASCII format
or
"255" ASCII format
..???

 

[sumiii]

Many ADC chips provide data in binary (hex). To display the data on an LCD or PC screen we need to convert it to ASCII.

I am using C-language and hi-tech compiler and PIC18FXX series ...

I hope you understand my problem.