topic Imx8dx CAN sampling point settings in i.MX Processors

Imx8dx CAN sampling point settings

songhongliang — Mon, 20 Mar 2023 10:19:06 GMT

Where to change the sample point settings

Re: Imx8dx CAN sampling point settings

songhongliang — Mon, 20 Mar 2023 10:24:15 GMT

flexcan驱动默认的采用点是75%吗

Re: Imx8dx CAN sampling point settings

Sanket_Parekh — Wed, 22 Mar 2023 09:57:22 GMT

Hello @songhongliang

I hope you are doing well.

1)Where to change the sample point settings?
One can change the settings of the CAN device properties.
ip link set DEVICE type can

"bitrate 125000 sample-point 0.875"
by this argument, one can set the bitrate and optionally one can set the sample-point

after Please verify the values by
ip -details -statistics link show can0

For more details please refer to the can.rst file in the Linux source code.
<source_code>/Documentation/networking/can.rst

2)Is the default adoption point of the flexcan driver 75%?
Can you please kindly elaborate on this term & share more detail on it?

Thanks & Regards.

Sanket Parekh

Re: Imx8dx CAN sampling point settings

songhongliang — Fri, 24 Mar 2023 03:43:47 GMT

In imx8dx, if I don't set sample point 0.875, what is the default sample point

Re: Imx8dx CAN sampling point settings

Sanket_Parekh — Fri, 24 Mar 2023 10:41:04 GMT

Hello @songhongliang ,

I hope you are doing well.

->One can check by default statistics by the below give the command.
ip -details -statistics link show can0

Thanks & Regards,

Sanket Parekh