topic Re: How to configure Simple Signal Multiplexing and Extended Signal Multiplexing in FlexCAN1 Of Mx10 in i.MX Processors

How to configure Simple Signal Multiplexing and Extended Signal Multiplexing in FlexCAN1 Of Mx1051

Maheshkadam9922 — Tue, 02 May 2023 05:39:51 GMT

we are working on FlexCAN1 Of mxrt1051. we are 1st time working on FlexCAN ,Pls assist in below point:
- How to configure Simple Signal Multiplexing and Extended Signal Multiplexing in FlexCAN1 Of Mx1051?
- Is there any document /application note on Simple Signal Multiplexing and Extended Signal Multiplexing in FlexCAN1
- which settings need to do in MCUXpresso config tool?
- Is there any example code ?

Re: How to configure Simple Signal Multiplexing and Extended Signal Multiplexing in FlexCAN1 Of Mx10

Maheshkadam9922 — Thu, 04 May 2023 05:00:47 GMT

Simple Signal Multiplexing:

For simple multiplexing only one multiplexor signal can be defined in a message. For each multiplexed signal only one multiplexor value can be defined.

Extended Signal Multiplexing:
Extended multiplexing allows defining several multiplexors in a message and a signal can be multiplexed for more than one multiplexor value. A multiplexed signal can also serve as multiplexor signal for other multiplexed signals, meaning that hierarchical multiplexing can be modeled.

Could you please assist how to configure above feature ?

As I understand Simple Signal Multiplexing ,Set the maximum number of message buffers to 64 and Extended Signal Multiplexing , Set the maximum number of message buffers to 512 for ESM mode
please confirm am I right?

Re: How to configure Simple Signal Multiplexing and Extended Signal Multiplexing in FlexCAN1 Of Mx10

RaRo — Tue, 09 May 2023 18:59:43 GMT

Hello @Maheshkadam9922,

We have some FlexCAN examples you could check in the iMXRT1050's SDK which you could download it from here: Welcome | MCUXpresso SDK Builder.

[EVKB iMX RT1050 SDK's CAN examples]

Unfortunately, there is neither a document nor an example code for iMX RT1051's FlexCAN to work with DBC Databases. You could find more information about them in the following links: CAN DBC File Explained - A Simple Intro [+Editor Playground] – CSS Electronics and Extended Signal Multiplexing in DBC Databases. Sorry for any inconvenient this may cause you.

Best regards, Raul.