Need info

Help
1

Hi, I’m coding to my rosbot and i found a problem that i can’t find info.

When I run this: /opt/husarion/tools/rpi-linux/ros-core2-client /dev/ttyCORE2

[INFO] [1531983966.277007]: ROS Serial Python Node
[INFO] [1531983966.299024]: Connecting to /dev/ttyCORE2 at 500000 baud
[ERROR] [1531983983.412389]: Unable to sync with device; possible link problem or link software version mismatch such as hydro rosserial_python with groovy Arduino

Until I install some packages it was ok, I try to remove the packages I install but the error persists. The three leds of the rosbot back are blinking, one in red two in green, but I can’t find what it is.

Thanks.

2

I’m running Ros kinetic in the rosbot and the pc.

3

Hello Diego,

If the LEDs are blinking, that means the Core2 controller fell into hard fault state. The reason is in the code you uploaded on it, it could be e.g. accessing to uninitialized object, reading out of array index or invalid pointer.

Do you use code from our tutorial or your own?

Regards,
Łukasz

4

I finally find info in a manual, thanks, I upload the default firmware in the web IDE and it’s go ok.
Thank you so much and sorry.

I was uploading code from tutorial but it has some code of mine.