mic-system/scripts/setup_rpi.sh

#!/usr/bin/env bash
set -euo pipefail

OVERLAY="googlevoicehat-soundcard"
if [[ "${1:-}" == "--overlay" && -n "${2:-}" ]]; then
  OVERLAY="$2"
fi

BOOT_CONFIG="/boot/firmware/config.txt"
if [[ ! -f "$BOOT_CONFIG" ]]; then
  BOOT_CONFIG="/boot/config.txt"
fi

echo "[1/6] Enabling I2S in ${BOOT_CONFIG}"
sudo sed -i '/^dtparam=i2s=on/d' "$BOOT_CONFIG"
sudo sed -i '/^dtoverlay=googlevoicehat-soundcard/d' "$BOOT_CONFIG"
sudo sed -i '/^dtoverlay=i2s-mmap/d' "$BOOT_CONFIG"
sudo sed -i '/^dtoverlay=adau7002-simple/d' "$BOOT_CONFIG"
echo "dtparam=i2s=on" | sudo tee -a "$BOOT_CONFIG" >/dev/null
echo "dtoverlay=${OVERLAY}" | sudo tee -a "$BOOT_CONFIG" >/dev/null

echo "[2/6] Writing ~/.asoundrc"
cat > "$HOME/.asoundrc" <<'EOF'
pcm.!default {
    type asym
    capture.pcm "mic"
}

pcm.mic {
    type hw
    card 0
    format S32_LE
    rate 48000
    channels 2
}
EOF

echo "[3/6] Installing dependencies"
sudo apt-get update
sudo apt-get install -y python3-venv python3-dev build-essential portaudio19-dev git

echo "[4/6] Creating venv"
cd /home/pch/mic_system
python3 -m venv .venv
source .venv/bin/activate
pip install --upgrade pip
pip install -r requirements.txt

echo "[5/6] Installing systemd service"
sudo cp deploy/mic_system.service /etc/systemd/system/mic_system.service
sudo systemctl daemon-reload
sudo systemctl enable mic_system.service
sudo systemctl restart mic_system.service || true

echo "[6/6] Done. Reboot required for I2S overlay."
echo "Run: sudo reboot"