====Respeaker====

<wrap right>
{{interfaces:respeaker1.jpg?200}}
\\ \\
{{interfaces:respeaker2.jpg?200}}
</wrap>

For Pi Zero

===Basic preparation===

<code>
apt install build-essential git raspberrypi-kernel-headers
</code>

===Install driver===

For some reason this installs an ARM64 toolchain
on a 32-bit Raspberry Pi Zero along with a ton
of other stuff that seems unrelated.

<code>
git clone https://github.com/HinTak/seeed-voicecard
cd seeed-voicecard
sudo ./install.sh
</code>

Installation will take quite some time.

===Setup===

Disable internal sound devices and reduce memory consumption.

/boot/config.txt:
<code>
# Enable audio (loads snd_bcm2835)
#dtparam=audio=on

# Enable DRM VC4 V3D driver
#dtoverlay=vc4-kms-v3d
#max_framebuffers=2

# Local
gpu_mem=16
dtparam=spi=on
</code>

REBOOT

aplay -l && arecord -l

<code>
**** List of PLAYBACK Hardware Devices ****
card 0: seeed2micvoicec [seeed-2mic-voicecard], device 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 [bcm2835-i2s-wm8960-hifi wm8960-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
**** List of CAPTURE Hardware Devices ****
card 0: seeed2micvoicec [seeed-2mic-voicecard], device 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 [bcm2835-i2s-wm8960-hifi wm8960-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
</code>


=== Test===

Install the Respeaker demo with picovoice 1.

The demo contains binary blobs of unknown origin.

<code>
sudo apt install python3-pip python3-pyaudio
rehash
pip3 install pvrespeakerdemo==1.1.3
</code>

Add $HOME/.local/bin to PATH

You can install Version 2 but it needs a LICENSE key whereas version 1 does not.


===Resources===

[[https://wiki.seeedstudio.com/ReSpeaker_2_Mics_Pi_HAT_Raspberry/|Product page]]

[[https://github.com/HinTak/seeed-voicecard|Updated kernel driver]]

[[https://pypi.org/project/pvrespeakerdemo/#history|Respeaker demo history]]