Hi all
I am using occasionaly printf to serial port as this is a very nice way to have
some debug messages.
One way I have noticed is printing floats. IT looks like that only integeres
are implemented and I had to write the code myself for floats.
I also had a look on the source code, so te get better understanding what is
supported or not in the tinyos.
This is what I found, that looks like that the float support should be there,
already.
I started by looking inside the
$TOSROOT/lib/printf
what I found
generic_printf/* has a bit of information:
Written By:
Shrirang Khishti <[email protected]>.
This is a smaller version of printf
Positive points about this function
1. Reduces code size considerably ,very useful in embedded applications
2. No malloc calls are used
3. Supports almost all the functionalities of GNU std printf routine.
4. If user dont want float_support in this customized printf
just undef macro float_support
*/
but my float_support looks defind on the file
and then to the PrintfP.nc I have found the following
/**
* This is the PrintfP component. It provides the printf service for printing
* data over the serial interface using the standard c-style printf command.
* Data printed using printf are buffered and only sent over the serial line
after
* the buffer is half full or an explicit call to printfflush() is made. This
* buffer has a maximum size of 250 bytes at present. This component is wired
* to a shadowed MainC component so that printf statements can be made anywhere
* throughout your code, so long as you include the "printf.h" header file in
* every file you wish to use it. Take a look at the printf tutorial (lesson 15)
* for more details.
*
* The printf service is currently only available for msp430 based motes
* (i.e. telos, eyes) and atmega128x based motes (i.e. mica2, micaz, iris). On
the
* atmega platforms, avr-libc version 1.4 or above must be used.
which does not say anything for the float, and actually looks like that it
should work exactly the same....
Any ideas what might be wrong? I will share soon my code
Regards
Alex
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