install_seeed-voicecard_rpi.md
seeed-voicecard

The drivers of <![CDATA[]]>ReSpeaker 2-Mics Pi Hat<![CDATA[]]> for Raspberry Pi.

Enable SPI and I2C

Enable SPI and I2C on Raspberry Pi in opening raspi-config.

pi@raspberrypi:~/ $ sudo raspi-config


In the menu "3 Interfacing Options" :
- "P4 SPI         Enable/disable automatic loading of SPI kernel module", and "Yes" at the window prompt. 
- "P5 I2C         Enable/disable automatic loading of I2C kernel module", and "Yes" at the window prompt.

Or in editing /boot/config.txt file, and in removing the # symbol from line that reads :
- #dtparam=spi=on
- #dtparam=i2c_arm=on

Reboot Raspberry Pi.

Install seeed-voicecard

Get the seeed voice card source code and install all linux kernel drivers

sudo apt update
sudo apt install -y git 
git clone https://github.com/respeaker/seeed-voicecard
cd seeed-voicecard
sudo ./install.sh --compat-kernel
sudo reboot


ReSpeaker 2-Mics Pi Hat



While the upstream wm8960 codec is not currently supported by current Pi kernel builds, upstream wm8960 has some bugs, you must it build manually.

Check that the sound card name matches the source code seeed-voicecard.

pi@raspberrypi:~/seeed-voicecard $ aplay -l
**** Liste des Périphériques Matériels PLAYBACK ****
carte 0: Headphones [bcm2835 Headphones], périphérique 0: bcm2835 Headphones [bcm2835 Headphones]
  Sous-périphériques: 8/8
  Sous-périphérique #0: subdevice #0
  Sous-périphérique #1: subdevice #1
  Sous-périphérique #2: subdevice #2
  Sous-périphérique #3: subdevice #3
  Sous-périphérique #4: subdevice #4
  Sous-périphérique #5: subdevice #5
  Sous-périphérique #6: subdevice #6
  Sous-périphérique #7: subdevice #7
carte 1: vc4hdmi [vc4-hdmi], périphérique 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 2: seeed2micvoicec [seeed-2mic-voicecard], périphérique 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 [bcm2835-i2s-wm8960-hifi wm8960-hifi-0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
pi@raspberrypi:~/seeed-voicecard $ arecord -l
**** Liste des Périphériques Matériels CAPTURE ****
carte 2: seeed2micvoicec [seeed-2mic-voicecard], périphérique 0: bcm2835-i2s-wm8960-hifi wm8960-hifi-0 [bcm2835-i2s-wm8960-hifi wm8960-hifi-0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0