ChibiOS Free Embedded RTOS

Hi to everybody,

I have tested a CAN connection in loopback mode and it works properly.

Now I am trying to test a simple connection between two CAN controllers but ,for the moment, I am not interested to the real implementation of CAN-BUS, I would just implement transmitting and receiving functions. So I have connected TX pin of CAN1 to RX of CAN2 and viceversa and I am trying to make a communication (without succes so far).

Provided that I am not implementing a real CAN connection because I have not a bus, do you think that this connection is able to work? Is CAN2 controller able to receive the data sent by CAN1 controller?

As board I am using a DIscovery (with STM32F407G microcontroller).

Thank you in advance for your help!

I am not sure if such connection (without drivers) is possible, probably not.

Giovanni

I will keep trying for a while and I will let you know.

Thank you!

Hi Giovanni,

I have realized a connection working properly using the two tranceivers, then I've tried to put off the transceivers and connect tx of CAN1 directly to rx of CAN2 and viceversa.

I confirm you that it doesn't work.


But I found on the internet that this configuration it is possible with PIC.

http://electronics.stackexchange.com/qu ... -a-can-bus.

Good to know, thanks.

Giovanni