Installing interrupt for Zynq UART0

Fernando Domínguez Pousa fdpousa at
Thu Sep 17 17:02:08 UTC 2020

Hi all,

I'm trying to install an interrupt for UART0 on Xilinx Zynq, with rtems_interrupt_handler_install. If I use RTEMS_INTERRUPT_SHARED I always get RTEMS_TOO_MANY as a result. If I use RTEMS_INTERRUPT_UNIQUE, I got RTEMS_RESOURCE_IN_USE. With RTEMS_INTERRUPT_REPLACE also fails.

I tried rtems_interrupt_handler_remove before install but I got RTEMS_UNSATISFIED.

Maybe the problem is in how I'm calling the installer:

rtems_interrupt_handler_install(ZYNQ_IRQ_UART_0, "UART1", RTEMS_INTERRUPT_UNIQUE, (rtems_interrupt_handler)handlerUart0, NULL);

I also say that I removed CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER from RTEMS configuration and I am using zynq_uart_initialize() before calling the install.

The objective is to create a handler to process raw UART incoming data (no chars).

Thanks in advance,

P Please consider the environment before printing this e-mail.
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