ADMA UART0 interrupt enable issue on lpuart_interrupt example (SDK_2.9.0_MIMX8QX5xxxFZ)

[emolina-ebers]

Hello all,

This example by default uses CM4 UART, but I'm trying to modify code to work with ADMA UART0. So far, I have been hable to change code configuration to send and receive with blocking functions (lpuart_polling example).

Sadly I can't get the interrupt handle working in the example. 

I have attached the whole project for more information (it can be opened and compiled with MCUXpresso IDE).

I'm very confused about how it works, because definition "#define DEMO_LPUART_IRQHandler ADMA_UART0_INT_IRQHandler" seem to reference to the fsl_adapter_lpuart.c component, however I am not sure if it compiles because ifdef.

In the unmodified example with M4 UART, which is working fine for me, what I mention about fsl_adapter_lpuart.c looks similar.

In the example code only uses "LPUART_EnableInterrupts" and "EnableIRQ" to configure interrupt. There is no any mention to the handler except in a define.

If you could help me, it will be very appreciated.

[emolina-ebers]

Thank you for you response.

Sorry, I forgot this topic, I found the solution time ago. Since ADMA is in other subsystem different from CortexM4, it is needed to use IRQSteer API.

/* Enable interrupt in irqsteer */
IRQSTEER_Init(IRQSTEER);
IRQSTEER_EnableInterrupt(IRQSTEER, ADMA_UART0_INT_IRQn);

If someone is struggling with this, maybe this mention could help.

[Juan-Rodarte]

Hello.

If it works fine in the unmodified example you'd better use that one.
In the interrupt configuration you don't include the handler because you define it with the ADMA_UART0_INT_IRQHandler