RS232 => RS232_ERRORS

[JP]

Hello everybody,

Please excuse my bad english,

I want to use the hardware diagnostic option of the RS232 serial port for
a PIC16F877.
I have read that the RS232_ERRORS variable can help me to
solve this problem but the manual is no so clear about this function.
Have You a litle description of each bits that compose the variable
( or the variable is this a simple copy of a common register of the pic like RCSTA ) ?

My 2° question is the following :

The C language is very new for me, so can I use the Getc() function to read a byte ( 0 -> 255 thus not an ASCII character ) or may have to read
the incoming byte directly in the RCREG register of the PIC ?

To finish, I find that compilers CCS are really super but the
documentation should be sometimes more complete.

Thank You for your help,

J-P

[Guest]

This forum may be your best source for information on RS232_ERRORS. If you try a search using key words: RS232 ERRORS, you shoukld find quite a lot of info. I have used it in a decalration as follows:

#use rs232(baud=9600, xmit=PIN_A2,rcv=PIN_A3, ERRORS)

Using it like this should clear RS232 errors when they occur, but I haven't done anything in detail with it.

To answer your second question.

"The C language is very new for me, so can I use the Getc() function to read a byte ( 0 -> 255 thus not an ASCII character ) or may have to read......"

you can use getc() or getch(). The value is as you pointed out 0..255 (but this will give the ascii equivilent if you need it - just store it or display it as char or int as required.

Experiment with this to see the result.

char letter;
letter = 'A'
printf("ASCII: %c, int:%d", letter, letter);

[JP]

Hi,


Thank You for your response and the example.
I am happy to learn that I can read so easy a byte with the getc() function.

Have a nice day,

J-P