ChibiOS on the Arduino Uno

ChibiOS public support forum for topics related to the Atmel AVR family of micro-controllers.

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mikenick42
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ChibiOS on the Arduino Uno

Postby mikenick42 » Tue Jun 02, 2015 2:39 am

I was just wondering if everyone here is using the libraries greiman wrote for the AVR chips with small amounts of memory. I tried to modify the RT-ARDUINOMEGA example and even with no OS features enabled couldn't get a program to fit into the flash.

The NIL-ARDUINOMEGA example was easy enough to modify and NIL is working for me thus far, so this is more a question of curiosity than looking for help.

devlware
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Re: ChibiOS on the Arduino Uno

Postby devlware » Sun Aug 02, 2015 2:11 am

I also modified the same MEGA example to run with the Arduino Uno but no luck.
I did not understand why the compiler reports so huge numbers for both program and data as follows.

Size after:
AVR Memory Usage
----------------
Device: atmega328p

Program: 31668 bytes (96.6% Full)
(.text + .data + .bootloader)

Data: 3973 bytes (194.0% Full)
(.data + .bss + .noinit)

-------- end --------

Regards, Diego

utzig
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Re: ChibiOS on the Arduino Uno

Postby utzig » Sun Aug 02, 2015 1:31 pm

Here's the output of the current Arduino Mega 1280 demo as is:

Code: Select all

AVR Memory Usage
----------------
Device: atmega1280

Program:   28226 bytes (21.5% Full)
(.text + .data + .bootloader)

Data:       3951 bytes (48.2% Full)
(.data + .bss + .noinit)


Now if I disable the TestThread:

Code: Select all

AVR Memory Usage
----------------
Device: atmega1280

Program:   11652 bytes (8.9% Full)
(.text + .data + .bootloader)

Data:        466 bytes (5.7% Full)
(.data + .bss + .noinit)


Hope that helps to make it clear what's happening! ;-)

Cheers,
Fabio Utzig

devlware
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Re: ChibiOS on the Arduino Uno

Postby devlware » Mon Aug 03, 2015 1:10 am

:oops:

Size after:
AVR Memory Usage
----------------
Device: atmega328p

Program: 13474 bytes (41.1% Full)
(.text + .data + .bootloader)

Data: 480 bytes (23.4% Full)
(.data + .bss + .noinit)

Now its working.

utzig
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Re: ChibiOS on the Arduino Uno

Postby utzig » Mon Aug 03, 2015 12:46 pm

It's all good! I'll wait for your patches so I can add official support again! :P

Cheers,
Fabio Utzig

mikenick42
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Re: ChibiOS on the Arduino Uno

Postby mikenick42 » Sat Aug 15, 2015 10:03 pm

deviware? Did you ever make any progress on a patch?


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