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TMS570LC4357: LIN1 Rx interrupt not working

Part Number: TMS570LC4357
Other Parts Discussed in Thread: LAUNCHXL2-570LC43

Dear Sir,

I have made a custom board using two TMS570LC4357 controller.i have taken LAUNCHXL2-570Lc43 launchpad as my reference design. The is working fine apart from RX interrupt of LIN1 as SCI mode. For one controller the RX interrupt is working but its not working for the other onboard controller. Some days before RX interrupt were working for both the controller but One of them is not working. ISR in scinotification() function is not executing.

Kindly help

Thank you