avr-libc uart.h not found

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immo
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Posted by immo: Mon. Dec 15, 2008 - 12:53 PM
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In the avr-lib manual they present a uart.h file that has functions to talk to the serial port. When I #include this file in my code it cant be found by the compiler. Is this file part of the avr-lib?

Quote:

6.38.3.7 uart.h Public interface definition for the RS-232 UART driver, much like in lcd.h except there is now also a character input function available.
As the RS-232 input is line-buffered in this example, the macro RX_BUFSIZE determines the size of that buffer.

My code:

#include 
#include 
#include 
#include

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Tools, Compilers and General Programming
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curtvm
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Posted by curtvm: Mon. Dec 15, 2008 - 01:11 PM
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C:\WinAVR\examples\stdiodemo

or grab them here-

http://www.nongnu.org/avr-libc/u...

put them in your project directory, then
#include "uart.h"

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clawson
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Posted by clawson: Mon. Dec 15, 2008 - 01:14 PM
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The file is not part of avr-libc itself but is included in an example of how to use stdio. Try looking in \winavr\doc\avr-libc\examples\stdiodemo

If you want to use it (or something similar) I would not use that version of the file but simply make a copy of it in your local project directory then just #include "uart.h"

(you'll also want to copy over uart.c and add it to a list of your build components - you'll probably also want to "borrow" the UART specific bits from stdiodemo.c)

Cliff

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JohanEkdahl
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Posted by JohanEkdahl: Mon. Dec 15, 2008 - 01:16 PM
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Quote:

Is this file part of the avr-lib?

Believe it or not but your own PC can help you locate files on your hard disk...

Start a Windows Explorer. Go to the WinAVR installation folder (top of the installation). Click Search. Type "uart.h" in the field for filename. Click Search Now.

The file is part of an example project. Copy uart.h and uart.c to your project folder. Add uart.c to your project (assuming you use AVR Studio, if you roll your own makefile you alone knows exactly what is needed).

Include the header file where needed with

#include "uart.h"

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Last Edited: Mon. Dec 15, 2008 - 01:49 PM
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immo
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Posted by immo: Mon. Dec 15, 2008 - 01:44 PM
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Thanks guys,

Quote:

The file is not part of avr-libc itself but is included in an example of how to use stdio. Try looking in \winavr\doc\avr-libc\examples\stdiodemo

This was the problem. I had the impression that uart.h is part of the library itself.

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