Hserin Syntax

[xapmanis]

Thank you a lot Henrik for the advises ill work on it when i get back from college.

[xapmanis]

Hello Henrik, I got back home and did run some tests. I found what i did wrong !! I did put wrong defines.
The only defines a simple HSEROUT/HSERIN needs are:

DEFINE HSER_RCSTA 90h 'Hser receive status init
DEFINE HSER_TXSTA 20h 'Hser transmit status init
DEFINE HSER_BAUD 9600 'Hser baud rate
DEFINE HSER_CLROERR 1 'Hser clear overflow automatically

The thing that put me through trouble was that
DEFINE HSER_BAUD 9600 and DEFINE HSER_SPBRG 25 does the same thing, they set the BaudRate and u can't use them both (what i did !!) :P

Mistakes on pics can sometimes drive me crazy !! Thank you for your reply

Regards, Kostas

[xapmanis]

Hello Henrik, I got back home and did run some tests. I found what i did wrong !! I did put wrong defines.
The only defines a simple HSEROUT/HSERIN needs are:

DEFINE HSER_RCSTA 90h 'Hser receive status init
DEFINE HSER_TXSTA 20h 'Hser transmit status init
DEFINE HSER_BAUD 9600 'Hser baud rate
DEFINE HSER_CLROERR 1 'Hser clear overflow automatically

The thing that put me through trouble was that
DEFINE HSER_BAUD 9600 and DEFINE HSER_SPBRG 25 does the same thing, they set the BaudRate and u can't use them both (what i did !!) :P

Mistakes on pics can sometimes drive me crazy !! Thank you for your reply

Regards, Kostas

[Sherbrook]

Hi
When using the PIC USART the Tx pin should be set to INPUT, not output as you would expect.
See PIC 18F2x/4xK22 datasheet page 270 section 16.1.1.7
Phil

[xapmanis]

Hey phil, i just read page 270. It's true what you said but it seems to work both ways. I think Hserout/Hserin sets TRIS register automatically.
Regards Kostas.