[WinAVR-users] [ winavr-Bugs-1883630 ] ATmegaXX4 - USART0 and USART1 additional bits aliases

[SourceForge.net <no...@so...>]

Bugs item #1883630, was opened at 2008-01-31 17:12
Message generated for change (Comment added) made by comerer
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=520074&aid=1883630&group_id=68108

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: AVR-LibC
Group: None
Status: Closed
Resolution: Fixed
Priority: 5
Private: No
Submitted By: Andrey Shved (comerer)
Assigned to: Eric Weddington (arcanum)
Summary: ATmegaXX4 - USART0 and USART1 additional bits aliases

Initial Comment:
Hi.

I have found that ATmegaXX4(P) have SPI mode of USART0 and USART1. So please add the following bits aliases:

for USART0 (UCSR0C):
#define UCPHA0  1

for USART1 (UCSR1C):
#define UCPHA1  1

Changed header file is attached.

Cheers!

----------------------------------------------------------------------

>Comment By: Andrey Shved (comerer)
Date: 2008-03-20 10:27

Message:
Logged In: YES 
user_id=1997126
Originator: YES

There IS actually this register.

>From ATmega164P/324P/644P Datasheet:

(page 170)
17.2 USART1 and USART0
The ATmega164P/324P/644P has two USART’s, USART0 and USART1.
The functionality for all USART’s is described below, most register and
bit references in this section
are written in general form. A lower case “n” replaces the USART
number.

...

17.11 Register Description
17.11.1 UDRn – USART I/O Data Register n
17.11.2 UCSRnA – USART Control and Status Register A
17.11.3 UCSRnB – USART Control and Status Register n B
17.11.4 UCSRnC – USART Control and Status Register n C
17.11.5 UBRRnL and UBRRnH – USART Baud Rate Registers



And also please have a look at the Register Summary table at pages 352-355
there are described all of these registers.

Thank you!

----------------------------------------------------------------------

Comment By: Eric Weddington (arcanum)
Date: 2008-03-19 21:24

Message:
Logged In: YES 
user_id=543419
Originator: NO

Fixed for UCSR0C, but there is no UCSR1C registers defined for any of the
ATmegaxx4(P) devices.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=520074&aid=1883630&group_id=68108