Is Aduino Uno is supported? Topic is solved

[tfAteba]

Hello to all!

I read a bit about Arduino Uno on this furum section.

But I can't know if this board with the 328p microcontroler is realy supported by ChibiOS.

There is no the board folder on ChibiOS_3.0.2/os/hal/boards/ such as Arduino Mega for example.

If this board is not supported, is there a particular reason? I want to use ChibiOS on this board for a small self-balancing robot

Thanks in advance for your kind responses.

Theo.

[igor]

It is supported. Kinda.
Not all the IP blocks are, though. For example I'm trying to merge a patch to enable GPIO interrupts. PWM is also in need of a refresh.
So ymmv depending on which specific functionality you need to use.

[tfAteba]

Hi Igor,

I need to use pwm, interruption, i2c and uart.

Are you using the NIL or the RT with arduino uno?

Do I need to patch the Aduino mega folder to use the arduino uno? Because there is not the arduino folder, so for me it is not supported.

[utzig]

Arduino Uno demos for both RT/NIL are available on SVN.

[tfAteba]

Hi,

thank you utzig, i'm going to takea look

[tfAteba]

Hi,

During my test, i saw that, the readme file under the RT-ARDUINOUNO folder is written for the atmega1280.

In the main.c file, line 20, the old function to declare the working area is used.

I wonder if it would be better to use the new function instead?

So I join a small patch to improve this remarks if necessary.

Theo.

[igor]

I found out the same issue for the testhal programs.
I created https://sourceforge.net/p/chibios/bugs/666/
No, I didn't do it just for the bug number, I noticed it only later

I also proposed a patch to make the tests ATMega2560 only. If they actually can work also on ATMega328, then the readmes need fixing as well.

[igor]

@Theodore: in case you need interrupts support for EXT/PC,
I have a pending Pr here https://github.com/ChibiOS/ChibiOS/pull/16

[tfAteba]

Hi Igor,

Thanks, it will be very helpful later for me, but for now, i'm dealing with the pprogramming process of the board.
I'm trying to understand how to remove the bootloader before flashing the board.

After that, I willl make a test .

Theo

[utzig]

I'm trying to understand how to remove the bootloader before flashing the board.

You don't need to remove the bootloader. You either program the image directly to flash using an external programmer which will overwrite the bootloader, or write using the Arduino USB port (via bootloader) which can be used on any standard Arduino without modifying the firmware. You only need to configure the correct parameters for avrdude on the Makefile. To write using the bootloader you would need to run like this:

Code: Select all

avrdude -p atmega328p -P <your-com-port> -b 57600 -c arduino -U flash:w:ch.hex

Cheers,
Fabio Utzig