iMX RT-1064 receive CAN FD Frames on CAN3

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iMX RT-1064 receive CAN FD Frames on CAN3

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steffenrose
Contributor III

Hi,

in CAN-FD mode the RX-Fifo should not be used.

What is the best way to receive a lot of CAN-FD Frames. More than one message object would be great for a burst of frames. Of course the frames should be read in the right order.

 

Thank you.

Steffen

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steffenrose
Contributor III

What is the correct value for MCR[MAXMB], if allmessages are CAN FD with 64Byte payload?

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vicentegomez
NXP TechSupport
NXP TechSupport

you can check the table 

Table 45-18. Maximum CAN bit rate in data phase on CAN FD frames

 

to check the best configuration for your application

 

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steffenrose
Contributor III

I need a bittiming clock of 40MHz or 80Mhz (CiA1301 CANopen FD). I cannot see so much possible settings in the ConfigTool of the MCUXpresso.

 

The table 45-25 write, the max. MB count is 7.

Can I use the 40Mhz? Table 45-18 is unclear for me. I don't know, if I have to calculate with 7 MB or with a lot of RAM and a calculate number of e.g. 64.

 

What is the value for MCR[MAXMB]? 6?

 

Thank you.

Steffen

 

 

 

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steffenrose
Contributor III

@vicentegomezDo you have any clarification about the right interpretation of the table?

Thank you

Steffen

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