Checksum field in LIN frame ?

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Checksum field in LIN frame ?

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anishchoudhary
Contributor III

For LIN module on MPC5777M and MPC5748G, checksum part is necessary written by programmer or not ? If necessary then how to calculate the checksum to fill in LIN master frame ? and in which register I have to write that checksum result ?

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martin_kovar
NXP Employee
NXP Employee

Hello,

please check the images below:

pastedImage_2.png

pastedImage_1.png

So, if you set CCD bit in LINCR1 register to 0, checksum is calculated by hardware.

Regards,

Martin