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SPI Interface

Questions and discussions related to Inforce 6540

by Russell Lin » Tue Apr 26, 2016 6:48 pm


How can I use the SPI interface via BLSP2 (BLSP 1 QUP 1) with GPIO PIN 4~7 when I get a new IFC6540 board?

Some PATHs and FILENAMEs mentioned in a specification can not be found.
Does someone can show me how to do step by step?
That would be very appreciated.
Russell Lin
Posts: 2
Joined: Mon Apr 11, 2016 5:02 pm

by Sundeep » Mon May 16, 2016 1:20 am

On the Inforce 6540 SBC, BLSP2 (4 lines)are made available on the expansion header through pins 2,4,6 and 8(GPIO pins 4~7 respectively). Please refer to the document titled 'APQ8084_Configure_BLSP_Port_ApplicationNote_002308_Rev_E.pdf' available on Inforce Techweb ( for instructions to program the BLSP lines to SPI. Hope this helps.

Posts: 40
Joined: Wed Jul 01, 2015 9:10 pm

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