Please go to:
Select "Advanced options".
Select "SPI". And answer "yes" to the question "Would you like the SPI interface to be enabled?". Then exit raspi-config. This configuration is persistent.
The information has been added to the Wiki: https://github.com/matrix-io/matrix-creator-quickstart/wiki/enable-spi
We (MATRIX Creator development team) have posted another bare metal example about reading a raw audio stream from the FPGA:
We still working in the beamforming algorithms, we will release the code soon.
Thanks for the question! You can see an example on how to get a stream in the following example:
* Copyright 2016 <Admobilize>
* All rights reserved.
The usual recipe (first update, then upgrade)
sudo apt-get update
sudo apt-get upgrade
for the matrix-creator-hal
git clone https://github.com/matrix-io/matrix-creator-hal.git
Run the demos
The steps have been simplified. Please take a look at the Wiki again and let us know if things work for you. SPI is enabled by matrix-creator-init package so you don't have to do it by hand.
If it doesn't work, try doing it in a fresh image of raspbian.