Could you help on an issue with SPI based on GPIO ?

[peter.meng]

HI,

I have a question related SPI .
I used SPI based on GPIO(bitbang) that has MOSI/MISO/CLK/CS  line .
But i found my spi slave device that has a interrupt line .
I want to know how to use GPIO simulate  interrupt on SPI master side  .
How to get the interrupt status from GPIO  and what thing should be
done when interrupt happens ?



Thanks a lot.
Best Regards .
Peter Meng
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