AWR1642BOOST: EVM to EVM CAN-FD cannot work.

Hi, 

We want to use two EVM board to do CAN-FD communication. If we test each EVM connect to PCAN device, TX/RX is work fine.

SDK version "mmwave_sdk_01_02_00_05"

Application: CAN-FD test code

But if we tried to connect to two EVM board. It doesn't work.

We met the same problem as this thread

https://e2e.ti.com/support/sensor/mmwave_sensors/f/1023/p/630000/2326979?tisearch=e2e-sitesearch&keymatch=LEC%203#2326979

"I've started the reception before transmission so that the receiver would be waiting for the message. Transmitter is stuck at the line "while (gTxDoneFlag == 0);" and similarly the receiver is stuck at "while (gRxDoneFlag == 0);". 

If I run the "mcanTransmitTest", it is reporting LEC as 3."

Could anyone know how to resolved it?

Thanks