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Software Application Development MicroZed SPI hang Interrupt status incorrect on occasion
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MicroZed SPI hang Interrupt status incorrect on occasion

mmaxim
mmaxim over 8 years ago

I have an application that is using SPI1 and the app runs fine 90% of the time. On occasion, The board boots up with the SPI interrupt status register is set to 0x00000000 whereas it should be 0x00000004;

We are using manual mode, manual start, and polled transfers.

The app hangs when performing transfers as polling mode waits for the XSPIPS_IXR_TXOW_MASK bit to be set; This then causes an infinite loop i n the library call, XSpiPs_PolledTransfer,

 

Is there a simple way to reset the spi controller and or interrupt controller.

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  • jafoste4
    0 jafoste4 over 8 years ago

    Hello Mmaxim,

    For information on how to reset the SPI contoller please view section 17.4.1 of ug585.

    https://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf

    For information on how to reset the interrupt contoller please view Chapter 3 of the AXI Interrupt Controller document

    https://www.xilinx.com/support/documentation/ip_documentation/axi_intc/v4_1/pg099-axi-intc.pdf

    --Josh

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