AWR1642BOOST: CANFd classic frame with different baudrate.

tulasikrishna pilla

Part Number: AWR1642BOOST

Hi,

we are attempting different baudrate on AWR1642BOOST CANFD port with classic frame(800kbps).

we tested with canfd port with classic frame at 1mbps already and have no issues.Below are the changes we have done to achieve 800kbps.

mcanBitTimingParams.nomBrp = 0x2U;

mcanBitTimingParams.nomPropSeg = 0x8U;

mcanBitTimingParams.nomPseg1 = 0x8U;

mcanBitTimingParams.nomPseg2 = 0x8U;

mcanBitTimingParams.nomSjw = 0x1U;

Nominal Bit rate = (40)/(((8+8+8)+1)*2) = 40/50 = 800kbps

Could you confirm there are no other changes required to achieve this.

Thanks,

P Tulasi Krishna.

over 7 years ago

0 Cesar over 7 years ago

TI__Guru**** 150224 points

Did you try this and it does not work?

Do you have any signal coming out on the scope?

Thank you
Cesar

0 tulasikrishna pilla over 7 years ago in reply to Cesar

Intellectual 450 points

Hi Cesar,
Yes data is coming out .we just want to confirm therotically our baudrate calculation is correct.

Thanks,
P Tulasi Krishna.

0 LeonardEllis over 7 years ago

TI__Guru 71526 points

6/29/18[LE]>unlock

0 Raghunandan Kamath over 7 years ago in reply to LeonardEllis

TI__Mastermind 22155 points

Hi Tulasi Krishna,

There are multiple ways of achieving this , the only difference would lie in the sample point.
mcanBitTimingParams.nomBrp = 0x2U;

mcanBitTimingParams.nomPropSeg = 0x8U;

mcanBitTimingParams.nomPseg1 = 0x8U;

mcanBitTimingParams.nomPseg2 = 0x8U;

mcanBitTimingParams.nomSjw = 0x1U;

Sample Point : 68%

mcanBitTimingParams.nomBrp = 0x2U;

mcanBitTimingParams.nomPropSeg = 0x7U;

mcanBitTimingParams.nomPseg1 = 0x7U;

mcanBitTimingParams.nomPseg2 = 0x10U;

mcanBitTimingParams.nomSjw = 0x1U;

Sample Point : 60%

Whatever you have chosen is a good setting.

-Raghu

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AWR1642BOOST: CANFd classic frame with different baudrate.