IMX28 SPI Problem

[mustafa_bakirci]

Hello,

I have been working with TQMA28 ( IMX28 Processor ) board. I need to implement wilc1000 wifi module to the stater kit. But I have an issue about the SPI. The atwilc1000 wifi module is full duplex spi slave and IMX28 is working only half duplex spi master mode. I have read about this issue in that forum,but there are no solution about how to make the IMX28 SPI work as full duplex. I implemented wifi module device driver to the linux and then I tried it make it work, but wifi module have to speak with host with full duplex mode. So I need solution or recomendation about at kernel level programming or modification.  

I would be very greatful any recomendations and ideas. Besides that, If you have any linux kernel gpio-bitbanging example about the spi it would be helpful too.

Best Regards,

Mustafa

[igorpadykov]

Hi Mustafa

i.MX28 spi limitations and workarounds are described on

Can the imx28 spi work in duplex mode 

for usage spi bitbanging oen can look on common linux resources like:

linux - Bit Bang with SPI (fwirte, write performance) - Stack Overflow 

Best regards
igor
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