MCUXpresso IDE v11.0.0 [Build 2516] [2019-06-05]
I started with the interrupt_rb_transfer project.
My custom board has a MKL26Z256 that is connected to a modem at 115200.
Using a Logic Analyzer, I can see my TX strings ("AT\n") getting to a modem, and I see the RX strings being returned ("OK\r\n").
The UART_UserCallback() is being called when the TX is idle: kStatus_UART_TxIdle
But UART_UserCallback() is not getting called when the RX is idle: kStatus_UART_RxIdle
Since the kStatus_UART_RxIdle event does not occur, the UART_UserCallback() is being called with the events: kStatus_UART_RxRingBufferOverrun and then kStatus_UART_RxHardwareOverrun.
I have not modified the code that sets up the UART, so I can't explain why I am not getting the expected kStatus_UART_RxIdle event.
Can somebody suggest what might explain why the kStatus_UART_RxIdle event is not occurring?