foundry27 : Post

Forum Topic - libspi-masterS.a prebuilt - where does this come from?: (2 Items)

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WINTEC Inc(deleted)

09/17/2015 9:24 PM

post114471

libspi-masterS.a prebuilt - where does this come from?

I am having an issue running qnx on  what essentially is a beagle bone black derivative.  

The SPI speeds for transferring 64 byte read/writes is abysmal.  It's running about 12ms to complete.  
I would like to look further into what is going on and would like to single step/instrument the code but where is the 
source for this library?  Google does not help with finding it and it's just listed in my BSP as "prebuilt"  
Prebuilt from where?  Is it possible to get this source?

Regards,
Chris

mario sangalli

09/24/2015 4:58 AM

post114508

Re: libspi-masterS.a prebuilt - where does this come from?

Hi, in my experience is quite impossible to have access to sources of
anything released in binary:  to have such sources You must have a support
plan that allows it ().

If You can't obtains the sources (but maybe I'm wrong), the only option to speed up the 
driver is to rewrite it. 
You can start from  the linux sources availables  to public domain and adapt them to 
qnx (or any examples for AM335x CPU : see the texas's site).
 
regards,
M. Sangalli

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