Using UART and UARTE together - problem with interrupt?

[Liam]

When I initialise an UARTE after an UART I get a ERROR 17 [RF_ERROR_BUSY]. Its fine if UART not initialised.

It drops out in nrfx_uarte_init at this point

if (nrfx_prs_acquire(p_instance->p_reg,
irq_handlers[p_instance->drv_inst_idx]) != NRFX_SUCCESS)
{
err_code = NRFX_ERROR_BUSY;
NRFX_LOG_WARNING("Function: %s, error code: %s.",
__func__,
NRFX_LOG_ERROR_STRING_GET(err_code));
return err_code;
}

To me it looks like they can't be use the same interrupt. I cannot see a way of changing the interrupt.

Am I missing something?

regards

Liam

[Nguyen Hoan Hoang]

UART & UARTE is the same UART.  It differs in operating mode.  UART is gpio transfer, UARTE is DMA transfer. Hence same interrupt

[ovrebekk]

Hi

Nguyen is correct. You can only use either UARTE or UART, not both at the same time. 

In general I would recommend using the UARTE peripheral over the UART peripheral, because of the enhancements it offers. The UART peripheral was only included in the part to avoid breaking legacy code using the UART. 

Best regards
Torbjørn