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

From: peter.meng
Date: Sun Mar 11 2012 - 23:43:46 EST


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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