Like I said, it was based on Starterware, so search Github for starterware and 
you will see a project starterware_PRU. It does use the mcspi, so it is not a 
bitbang implementation. 

Regards,
John




> On Feb 19, 2018, at 7:33 PM, pierrick.ra...@gadz.org wrote:
> 
> Thanks John for you answer, I was quit busy last week so I worked on this 
> during the Weekend. 
> 
> Unfortunately, I was not able to find a project that is using the SPI and I2C 
> interface with the PRU, I only found this one : 
> https://github.com/chanakya-vc/PRU-I2C_SPI_master/wiki/SPI-Master-Controller 
> But it is using bit banging for the SPI part and not using the on-board 
> pull-up resistors for the I2C part.
> 
> Concerning the ADC, I'll have a loook at the UIIO drivers in the coming days 
> it seems that it meets my need in term of real-time acquisition. 
> 
> Regards,
> 
> Pierrick 
> 
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