S32K146 use LPUART with idle line & DMA problem

[james1986]

I configure LPUART with Idle line interrupt (CTRL[ILIE] is set to 1,  CTRL[ILT] is set to 1,  CTRL[IDLECFG] is set to 011b). And also enable DMA request.

The size of my recieve buffer was set to 10 bytes,  When I send data  which size is less than 10 bytes(eg. 5 bytes) to my S32K146  board by UART, the Idle line interrupt was detected.

But the intterupt flag of STAT[IDLE] was not set.

Is there something wrong that causes the interrupt flag not to be set? Thanks!

[danielmartynek]

Hi,

The driver can detect an IDLE interrupt only when the STAT[IDLE] bit is set.

Which SDK version and IDE do you use?

Have you modified the driver?

Can you share the project?

Thank you,

BR, Daniel