Hello,
We have requirement, SBC is requested to have wake up via CAN and switch change of state on wake up pin.
The SW shall configure the following registers as below:
We observed that wake up by pin happens successfully, and we have a query on CAN standard wake-up
Please let us know how to send wake-up pattern and how to test wake by CAN
We are waiting for your response.
Hi Siva,
In the datasheet, page 26, you can see the figure as below.
SBC needs to receive dominant->recessive->dominant sequence longer period than twake(busdom) and twake(busrec).within less than to(wake).
This should be more or less same for all CAN transceivers to wake-up by CAN wake-up pattern.
Best regards,
Tomas
Hello Tomas,
Thanks for your quick response,
we are facing a problem while putting SBC in to sleep mode.
We observed that SBC receives a Sleep mode command (MC = 001), it immediately switches to Reset mode. and
For reference find our observations below:
Read Command: 0xC300, Respose from SBC 0xC311
Read Command: 0xC500, Respose from SBC 0xC500
Let us to know any thing else need to configure other than these registers:
Please help us to configure SBC in to sleep mode.
We are waiting for your response.
Regards,
Siva Sankar Chandika
Hi Siva,
Enter to Sleep means V1 is OFF, then.
So, microcontroller may not have power any more.
If RSTN of microcontroller was connected to RSTN of UJA1169, microcontroller can set the pin low and UJA1169 is reset.
This can often happen in PCB design, but, this can only be solved by disconnecting RSTN of UJA1169 from RSTN of controller.
Best regards,
Tomas