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UART Rx Threshold or FIFO Full interrupt not triggered

NB_Saschen1
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Hi,

I created a test project to wake up L562MCU from STOP Mode when UART RxFIFO Threshold reached or full interrupt triggered or USER Button pressed.

The project is based on Example project "UART_WakeUpFromStopUsingFIFO" for L562-DK.

Test 1:

Rx threshold is 2 bytes. Enter into STOP Mode and wake up from STOP mode by triggering UART Rx Threshold reached Interrupt when USER send 2 bytes.

Problem 1:

MCU woke up from STOP Mode when USER sent more than 2 bytes but Threshold interrupt not triggered.

Test 2:

Rx FIFO Buffer is 8 bytes. Enter into STOP Mode and wake up from STOP mode by triggering UART Rx FIFO Full interrupt when USER send 8 bytes.

Problem 2:

MCU woke up from STOP Mode when USER sent more than 8 bytes but FIFO Full interrupt not triggered.

Problem 3:

MCU woke up from STOP Mode when USER sent 8 bytes but FIFO Full interrupt not triggered.

The project runs on L562-DK. I have attached it for your reference.

Above mentioned problems exist also in example project.

Could you help me to resolve this issue?

Thanks

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