553 lines
19 KiB
Bash
553 lines
19 KiB
Bash
#!/usr/bin/env bash
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# lesavka‑core.sh - one‑shot USB‑gadget bring‑up (Pi‑5 / Arch‑ARM)
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# Presents: • Boot‑protocol keyboard (hidg0)
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# • Boot‑protocol mouse (hidg1)
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# • Stereo UAC2 speaker + microphone
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set -euo pipefail
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log() { printf '[lesavka-core] %s\n' "$*"; }
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G=/sys/kernel/config/usb_gadget/lesavka
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find_udc() {
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ls /sys/class/udc 2>/dev/null | head -n1 || true
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}
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udc_state() {
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local udc="$1"
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if [[ -z $udc ]]; then
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echo "unknown"
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return 0
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fi
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cat "/sys/class/udc/$udc/state" 2>/dev/null || echo "unknown"
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}
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is_attached_state() {
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case "$1" in
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configured|addressed|default|suspended)
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return 0
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;;
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esac
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return 1
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}
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detach_gadget() {
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local udc=""
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udc="$(find_udc)"
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local state
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state="$(udc_state "$udc")"
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case "$state" in
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configured|addressed|default|suspended)
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log "detach skipped (state=$state)"
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return 0
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;;
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esac
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if [[ -n $udc && -w /sys/class/udc/$udc/soft_connect ]]; then
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echo 0 >"/sys/class/udc/$udc/soft_connect" 2>/dev/null || true
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fi
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if [[ -n ${LESAVKA_DETACH_CLEAR_UDC:-} && -e $G/UDC ]]; then
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echo "" >"$G/UDC" 2>/dev/null || true
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fi
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if [[ -n $udc ]]; then
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log "detached (state=${state:-unknown})"
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else
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log "detached (no UDC)"
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fi
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}
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attach_gadget() {
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if [[ ! -d $G ]]; then
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log "gadget path missing; need full setup"
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return 1
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fi
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local udc=""
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udc="$(find_udc)"
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if [[ -z $udc ]]; then
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log "UDC not found; need full setup"
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return 1
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fi
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if [[ -n $udc && -w /sys/class/udc/$udc/soft_connect ]]; then
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echo 1 >"/sys/class/udc/$udc/soft_connect" 2>/dev/null || true
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fi
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if [[ -n ${LESAVKA_ATTACH_WRITE_UDC:-} && -e $G/UDC ]]; then
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echo "$udc" >"$G/UDC" 2>/dev/null || true
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fi
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log "attached to $udc"
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return 0
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}
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case "${1:-}" in
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--detach)
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detach_gadget
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exit 0
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;;
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--detach-hard)
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LESAVKA_DETACH_CLEAR_UDC=1 detach_gadget
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exit 0
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;;
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--attach)
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if attach_gadget; then
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exit 0
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fi
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;;
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--help|-h)
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echo "Usage: $0 [--attach|--detach|--detach-hard]"
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exit 0
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;;
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esac
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cleanup() {
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if [[ -n ${LESAVKA_ALLOW_GADGET_RESET:-} ]]; then
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LESAVKA_DETACH_CLEAR_UDC=1 detach_gadget
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else
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detach_gadget
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fi
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}
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DISABLE_UAC=${LESAVKA_DISABLE_UAC:-}
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DISABLE_UVC=${LESAVKA_DISABLE_UVC:-}
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ALLOW_RESET=${LESAVKA_ALLOW_GADGET_RESET:-}
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UVC_FALLBACK=${LESAVKA_UVC_FALLBACK:-1}
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UVC_STREAMING_INTERVAL=${LESAVKA_UVC_STREAMING_INTERVAL:-1}
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UVC_MAXPACKET=${LESAVKA_UVC_MAXPACKET:-1024}
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UVC_MAXBURST=${LESAVKA_UVC_MAXBURST:-1}
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UVC_INTERVAL=${LESAVKA_UVC_INTERVAL:-}
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UVC_WIDTH=${LESAVKA_UVC_WIDTH:-1280}
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UVC_HEIGHT=${LESAVKA_UVC_HEIGHT:-720}
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UVC_FPS=${LESAVKA_UVC_FPS:-25}
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UVC_DISABLE_IRQ=${LESAVKA_UVC_DISABLE_IRQ:-}
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UVC_BULK=${LESAVKA_UVC_BULK:-}
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UVC_CODEC=${LESAVKA_UVC_CODEC:-yuyv}
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uvc_fifo_min() {
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local path="$1"
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local raw=""
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raw="$(cat "$path" 2>/dev/null || true)"
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if [[ -z $raw ]]; then
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return 0
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fi
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echo "$raw" | tr ', ' '\n' | awk 'NF{print $1}' | awk '
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$1 > 0 { if (min == "" || $1 < min) min = $1 }
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END { if (min != "") print min }'
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}
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uvc_fifo_min_debugfs() {
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local path="$1"
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awk -F': ' '/^g_tx_fifo_size\[/{print $2}' "$path" 2>/dev/null | awk '
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$1 > 0 { if (min == "" || $1 < min) min = $1 }
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END { if (min != "") print min }' || true
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}
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uvc_fifo_np_debugfs() {
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local path="$1"
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awk -F': ' '/^g_np_tx_fifo_size/{print $2; exit}' "$path" 2>/dev/null || true
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}
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compute_uvc_payload_cap() {
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UVC_PAYLOAD_CAP=""
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UVC_PAYLOAD_SRC=""
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UVC_PAYLOAD_PCT=""
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UVC_FIFO_PERIODIC="$(uvc_fifo_min /sys/module/dwc2/parameters/g_tx_fifo_size)"
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UVC_FIFO_NP="$(uvc_fifo_min /sys/module/dwc2/parameters/g_np_tx_fifo_size)"
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UVC_FIFO_SRC_PERIODIC=""
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UVC_FIFO_SRC_NP=""
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if [[ -n $UVC_FIFO_PERIODIC ]]; then
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UVC_FIFO_SRC_PERIODIC="dwc2.params"
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fi
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if [[ -n $UVC_FIFO_NP ]]; then
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UVC_FIFO_SRC_NP="dwc2.params"
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fi
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UVC_UDC="$(ls /sys/class/udc 2>/dev/null | head -n1 || true)"
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if [[ -n $UVC_UDC ]]; then
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local params="/sys/kernel/debug/usb/$UVC_UDC/params"
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if [[ -r $params ]]; then
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if [[ -z $UVC_FIFO_PERIODIC ]]; then
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UVC_FIFO_PERIODIC="$(uvc_fifo_min_debugfs "$params")"
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if [[ -n $UVC_FIFO_PERIODIC ]]; then
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UVC_FIFO_SRC_PERIODIC="debugfs.params"
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fi
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fi
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if [[ -z $UVC_FIFO_NP ]]; then
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UVC_FIFO_NP="$(uvc_fifo_np_debugfs "$params")"
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if [[ -n $UVC_FIFO_NP ]]; then
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UVC_FIFO_SRC_NP="debugfs.params"
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fi
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fi
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fi
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fi
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if [[ -n ${LESAVKA_UVC_MAXPAYLOAD_LIMIT:-} ]]; then
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UVC_PAYLOAD_CAP="${LESAVKA_UVC_MAXPAYLOAD_LIMIT}"
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UVC_PAYLOAD_SRC="env"
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UVC_PAYLOAD_PCT=100
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return
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fi
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local chosen=""
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if [[ -n $UVC_BULK ]]; then
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if [[ -n $UVC_FIFO_NP ]]; then
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chosen="$UVC_FIFO_NP"
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UVC_PAYLOAD_SRC="${UVC_FIFO_SRC_NP:-dwc2.g_np_tx_fifo_size}"
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elif [[ -n $UVC_FIFO_PERIODIC ]]; then
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chosen="$UVC_FIFO_PERIODIC"
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UVC_PAYLOAD_SRC="${UVC_FIFO_SRC_PERIODIC:-dwc2.g_tx_fifo_size}"
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fi
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else
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if [[ -n $UVC_FIFO_PERIODIC ]]; then
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chosen="$UVC_FIFO_PERIODIC"
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UVC_PAYLOAD_SRC="${UVC_FIFO_SRC_PERIODIC:-dwc2.g_tx_fifo_size}"
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elif [[ -n $UVC_FIFO_NP ]]; then
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chosen="$UVC_FIFO_NP"
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UVC_PAYLOAD_SRC="${UVC_FIFO_SRC_NP:-dwc2.g_np_tx_fifo_size}"
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fi
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fi
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if [[ -z $chosen ]]; then
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return
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fi
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local pct=${LESAVKA_UVC_LIMIT_PCT:-95}
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if ((pct < 1)); then
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pct=1
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elif ((pct > 100)); then
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pct=100
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fi
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UVC_PAYLOAD_PCT=$pct
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local bytes=$((chosen * 4))
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UVC_PAYLOAD_CAP=$((bytes * pct / 100))
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}
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compute_uvc_payload_cap
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if [[ -n $UVC_PAYLOAD_CAP && $UVC_PAYLOAD_CAP -gt 0 ]]; then
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log "UVC fifo periodic=${UVC_FIFO_PERIODIC:-?} np=${UVC_FIFO_NP:-?} cap=${UVC_PAYLOAD_CAP}B pct=${UVC_PAYLOAD_PCT:-?} src=${UVC_PAYLOAD_SRC:-?} udc=${UVC_UDC:-?}"
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if ((UVC_MAXPACKET > UVC_PAYLOAD_CAP)); then
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log "clamping UVC maxpacket $UVC_MAXPACKET -> $UVC_PAYLOAD_CAP"
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UVC_MAXPACKET=$UVC_PAYLOAD_CAP
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fi
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fi
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if [[ -n $UVC_BULK && $UVC_MAXPACKET -gt 512 ]]; then
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log "clamping UVC maxpacket $UVC_MAXPACKET -> 512 (bulk)"
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UVC_MAXPACKET=512
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fi
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if [[ -n ${LESAVKA_UVC_MJPEG:-} ]]; then
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UVC_CODEC=mjpeg
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fi
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MAX_SPEED=${LESAVKA_MAX_SPEED:-high-speed}
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if [[ -z $UVC_INTERVAL ]]; then
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UVC_INTERVAL=$((10000000 / UVC_FPS))
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fi
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UVC_FRAME_SIZE=${LESAVKA_UVC_FRAME_SIZE:-$((UVC_WIDTH * UVC_HEIGHT * 2))}
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wait_for_enum() {
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local tries=${1:-50} # 50 x 100ms = 5s
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UDC_STATE="unknown"
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UDC_SPEED="unknown"
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for ((i=0; i<tries; i++)); do
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UDC_STATE=$(cat "/sys/class/udc/$UDC/state" 2>/dev/null || echo "unknown")
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UDC_SPEED=$(cat "/sys/class/udc/$UDC/current_speed" 2>/dev/null || echo "unknown")
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if [[ "$UDC_STATE" != "not attached" && "$UDC_STATE" != "unknown" ]]; then
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return 0
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fi
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sleep 0.1
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done
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return 1
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}
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exec 2> >(tee -a /tmp/lesavka-core.debug.$(date +%s).log)
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set -x
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echo "[lesavka-core] running: $0 (sha1sum=$(sha1sum "$0" | cut -d' ' -f1))"
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#──────────────────────────────────────────────────
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# 1. Ensure overlay + kernel modules
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#──────────────────────────────────────────────────
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CFG=/boot/config.txt
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grep -q 'dtoverlay=dwc2,dr_mode=peripheral' "$CFG" || echo 'dtoverlay=dwc2,dr_mode=peripheral' >> "$CFG"
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modprobe dwc2 || { echo "dwc2 not in kernel; abort" >&2; exit 1; }
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modprobe libcomposite || { echo "libcomposite not in kernel; abort" >&2; exit 1; }
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if [[ -n ${LESAVKA_RELOAD_UVCVIDEO:-} ]]; then
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modprobe -r uvcvideo 2>/dev/null || true
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fi
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modprobe uvcvideo || { echo "uvcvideo not in kernel; abort" >&2; exit 1; }
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udevadm control --reload
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udevadm trigger --subsystem-match=video4linux
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udevadm settle --timeout=5 || log "⚠️ udevadm settle timed out"
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#──────────────────────────────────────────────────
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# 2. Wait for UDC device to appear (max 10 s)
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#──────────────────────────────────────────────────
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log "⏳ waiting for UDC to register ..."
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UDC=""
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for _ in {1..100}; do # 100 × 100ms = 10s
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UDC=$(ls /sys/class/udc 2>/dev/null | head -n1) && [[ -n $UDC ]] && break
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sleep 0.1
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done
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if [[ -z $UDC ]]; then
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log "⚠️ UDC still absent - trying manual bind"
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for drv in dwc2 dwc3; do
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drv_root="/sys/bus/platform/drivers/$drv"
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[[ -d $drv_root ]] || continue
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for node in /sys/bus/platform/devices/*usb*; do
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node=${node##*/} # strip path
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echo "$node" >"$drv_root/bind" 2>/dev/null || continue
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done
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done
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# re-check for another 5 s
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for i in {1..50}; do
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UDC=$(ls /sys/class/udc 2>/dev/null | head -n1) && [[ -n $UDC ]] && break
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sleep 0.1
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done
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fi
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[[ -n $UDC ]] || { log "❌ UDC not present after manual bind"; exit 1; }
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log "✅ UDC detected: $UDC"
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# If a gadget is already configured, avoid tearing it down unless forced.
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if [[ -d $G && -z $ALLOW_RESET ]]; then
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if [[ -s $G/UDC || -d $G/configs/c.1 ]]; then
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log "🔒 gadget already configured; skipping reset."
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log " Set LESAVKA_ALLOW_GADGET_RESET=1 to force rebuild."
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attach_gadget || true
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exit 0
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fi
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fi
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# Guard against lockups: if the gadget is already bound, don't reset unless forced.
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BOUND_UDC=""
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if [[ -r $G/UDC ]]; then
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BOUND_UDC=$(cat "$G/UDC" 2>/dev/null || true)
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fi
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if [[ -n $BOUND_UDC && -z $ALLOW_RESET ]]; then
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log "🔒 gadget already bound to '$BOUND_UDC' - refusing reset."
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log " Set LESAVKA_ALLOW_GADGET_RESET=1 to force."
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exit 0
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fi
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# Guard against lockups: don't reset gadget while host is attached unless forced.
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UDC_STATE="$(udc_state "$UDC")"
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if [[ -z $ALLOW_RESET ]] && is_attached_state "$UDC_STATE"; then
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log "🔒 UDC state is '$UDC_STATE' - refusing gadget reset while host attached."
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log " Set LESAVKA_ALLOW_GADGET_RESET=1 to force."
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exit 0
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fi
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#──────────────────────────────────────────────────
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# 3. (Re‑)create gadget
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#──────────────────────────────────────────────────
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mountpoint -q /sys/kernel/config || mount -t configfs none /sys/kernel/config
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if [[ -d $G ]]; then
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echo '' >"$G/UDC" 2>/dev/null || true
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sleep 0.2
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# configfs doesn't allow unlinking attribute files; remove links then rmdir.
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find "$G" -type l -delete 2>/dev/null || true
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for dir in "$G/functions" "$G/configs" "$G/strings" "$G/os_desc" "$G/webusb"; do
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[[ -d $dir ]] || continue
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find "$dir" -mindepth 1 -depth -type d -exec rmdir {} \; 2>/dev/null || true
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done
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fi
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mkdir -p "$G"
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echo 0x1d6b >"$G/idVendor" # Linux Foundation
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echo 0x0104 >"$G/idProduct" # Multifunction Composite Gadget
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echo 0x0200 >"$G/bcdUSB"
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echo "$MAX_SPEED" >"$G/max_speed"
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mkdir -p "$G/strings/0x409"
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echo "$(cat /proc/sys/kernel/random/uuid)" >"$G/strings/0x409/serialnumber"
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echo "Lesavka" >"$G/strings/0x409/manufacturer"
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echo "Lesavka Composite" >"$G/strings/0x409/product"
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# ----------------------- HID keyboard (usb0) -----------------------
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mkdir -p "$G/functions/hid.usb0"
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echo 1 >"$G/functions/hid.usb0/protocol"
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echo 1 >"$G/functions/hid.usb0/subclass"
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echo 8 >"$G/functions/hid.usb0/report_length"
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printf '\x05\x01\x09\x06\xa1\x01\x05\x07\x19\xe0\x29\xe7\x15\x00\x25\x01'\
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'\x75\x01\x95\x08\x81\x02\x95\x01\x75\x08\x81\x01\x95\x05\x75\x01\x05'\
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'\x08\x19\x01\x29\x05\x91\x02\x95\x01\x75\x03\x91\x01\x95\x06\x75\x08'\
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'\x15\x00\x25\x65\x05\x07\x19\x00\x29\x65\x81\x00\xc0' \
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>"$G/functions/hid.usb0/report_desc"
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# ----------------------- HID mouse (usb1) --------------------------
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mkdir -p "$G/functions/hid.usb1"
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echo 2 > "$G/functions/hid.usb1/protocol" # Boot mouse
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echo 1 > "$G/functions/hid.usb1/subclass"
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echo 4 > "$G/functions/hid.usb1/report_length"
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printf '\x05\x01\x09\x02\xa1\x01\x09\x01\xa1\x00'\
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'\x05\x09\x19\x01\x29\x03\x15\x00\x25\x01\x95\x03\x75\x01\x81\x02'\
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'\x95\x01\x75\x05\x81\x03'\
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'\x05\x01\x09\x30\x09\x31\x09\x38\x15\x81\x25\x7f\x75\x08\x95\x03\x81\x06'\
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'\xc0\xc0' >"$G/functions/hid.usb1/report_desc"
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if [[ -z $DISABLE_UAC ]]; then
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# ---------- UAC2 function - speaker + mic, 2×48 kHz stereo ---------
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mkdir -p "$G/functions/uac2.usb0"
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U="$G/functions/uac2.usb0"
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# Playback (speaker)
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echo 0x3 >"$U/p_chmask" # L+R
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echo 48000 >"$U/p_srate"
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echo 2 >"$U/p_ssize" # 16 bit
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# Capture (microphone)
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echo 0x3 >"$U/c_chmask"
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echo 48000 >"$U/c_srate"
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echo 2 >"$U/c_ssize"
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# Optional: allocate a few extra request buffers
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echo 32 >"$U/req_number" 2>/dev/null || true
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else
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log "🔇 UAC2 disabled (LESAVKA_DISABLE_UAC set)"
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fi
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if [[ -z $DISABLE_UVC ]]; then
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# ----------------------- UVC function (usb‑video) ------------------
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mkdir -p "$G/functions/uvc.usb0"
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F="$G/functions/uvc.usb0"
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echo "$UVC_STREAMING_INTERVAL" >"$F/streaming_interval"
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echo "$UVC_MAXPACKET" >"$F/streaming_maxpacket"
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echo "$UVC_MAXBURST" >"$F/streaming_maxburst"
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if [[ -n $UVC_BULK ]]; then
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echo 1 >"$F/streaming_bulk" 2>/dev/null || true
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fi
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# ── 1. FORMAT DESCRIPTOR ──────────────────────────────────────────
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if [[ "$UVC_CODEC" == "mjpeg" ]]; then
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mkdir -p "$F/streaming/mjpeg/m"
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echo 1 >"$F/streaming/mjpeg/m/bDefaultFrameIndex" 2>/dev/null || true
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echo 0 >"$F/streaming/mjpeg/m/bmaControls" 2>/dev/null || true
|
||
|
||
mkdir -p "$F/streaming/mjpeg/m/720p"
|
||
echo 0 >"$F/streaming/mjpeg/m/720p/bmCapabilities"
|
||
echo "$UVC_WIDTH" >"$F/streaming/mjpeg/m/720p/wWidth"
|
||
echo "$UVC_HEIGHT" >"$F/streaming/mjpeg/m/720p/wHeight"
|
||
echo "$UVC_FRAME_SIZE" >"$F/streaming/mjpeg/m/720p/dwMaxVideoFrameBufferSize"
|
||
echo "$UVC_INTERVAL" >"$F/streaming/mjpeg/m/720p/dwDefaultFrameInterval"
|
||
cat <<EOF >"$F/streaming/mjpeg/m/720p/dwFrameInterval"
|
||
${UVC_INTERVAL}
|
||
$((UVC_INTERVAL * 2))
|
||
EOF
|
||
else
|
||
# uncompressed YUY2, 16 bpp
|
||
mkdir -p "$F/streaming/uncompressed/yuyv"
|
||
# GUID = {59555932-0000-0010-8000-00aa00389b71} (“YUY2”) little-endian
|
||
printf '\x59\x55\x59\x32\x00\x00\x10\x00\x80\x00\x00\xaa\x00\x38\x9b\x71' \
|
||
>"$F/streaming/uncompressed/yuyv/guidFormat"
|
||
echo 16 >"$F/streaming/uncompressed/yuyv/bBitsPerPixel"
|
||
|
||
mkdir -p "$F/streaming/uncompressed/yuyv/480p"
|
||
echo "$UVC_WIDTH" >"$F/streaming/uncompressed/yuyv/480p/wWidth"
|
||
echo "$UVC_HEIGHT" >"$F/streaming/uncompressed/yuyv/480p/wHeight"
|
||
echo "$UVC_FRAME_SIZE" >"$F/streaming/uncompressed/yuyv/480p/dwMaxVideoFrameBufferSize"
|
||
echo "$UVC_INTERVAL" >"$F/streaming/uncompressed/yuyv/480p/dwDefaultFrameInterval"
|
||
cat <<EOF >"$F/streaming/uncompressed/yuyv/480p/dwFrameInterval"
|
||
${UVC_INTERVAL}
|
||
$((UVC_INTERVAL * 2))
|
||
EOF
|
||
fi
|
||
|
||
# ── 3. REQUIRED HEADER LINKS (per UVC gadget docs) ────────────────
|
||
mkdir -p "$F/streaming/header/h"
|
||
pushd "$F/streaming/header/h" >/dev/null
|
||
if [[ "$UVC_CODEC" == "mjpeg" ]]; then
|
||
ln -s ../../mjpeg/m mjpeg
|
||
else
|
||
ln -s ../../uncompressed/yuyv yuyv
|
||
fi
|
||
popd >/dev/null
|
||
|
||
for s in fs hs ss; do
|
||
mkdir -p "$F/streaming/class/$s"
|
||
pushd "$F/streaming/class/$s" >/dev/null
|
||
ln -s ../../header/h h
|
||
popd >/dev/null
|
||
done
|
||
|
||
# ── 4. Video‑Control interface ─────────────────────────────────────
|
||
mkdir -p "$F/control/header/h"
|
||
set +e
|
||
for s in fs hs ss; do
|
||
mkdir -p "$F/control/class/$s" 2>/dev/null || continue
|
||
pushd "$F/control/class/$s" >/dev/null
|
||
ln -s ../../header/h h 2>/dev/null || true
|
||
popd >/dev/null
|
||
done
|
||
set -e
|
||
|
||
if [[ -n $UVC_DISABLE_IRQ ]]; then
|
||
echo 0 >"$F/control/enable_interrupt_ep" 2>/dev/null || true
|
||
fi
|
||
|
||
# optional: hide unsupported controls
|
||
echo 0 >"$F/control/terminal/camera/default/bmControls" 2>/dev/null || true
|
||
echo 0 >"$F/control/processing/default/bmControls" 2>/dev/null || true
|
||
|
||
# friendly label
|
||
mkdir -p "$F/control/header/h/strings/0x409" 2>/dev/null || true
|
||
echo "Lesavka UVC" >"$F/control/header/h/strings/0x409/label" 2>/dev/null || true
|
||
else
|
||
log "📷 UVC disabled (LESAVKA_DISABLE_UVC set)"
|
||
fi
|
||
|
||
# ----------------------- configuration -----------------------------
|
||
mkdir -p "$G/configs/c.1/strings/0x409"
|
||
echo 500 > "$G/configs/c.1/MaxPower"
|
||
# echo "Config 1" > "$G/configs/c.1/strings/0x409/configuration"
|
||
config_label="Config 1: HID"
|
||
if [[ -z $DISABLE_UAC ]]; then
|
||
config_label+=" + UAC2"
|
||
fi
|
||
if [[ -z $DISABLE_UVC ]]; then
|
||
config_label+=" + UVC"
|
||
fi
|
||
echo "$config_label" >"$G/configs/c.1/strings/0x409/configuration"
|
||
|
||
ln -s $G/functions/hid.usb0 $G/configs/c.1/
|
||
ln -s $G/functions/hid.usb1 $G/configs/c.1/
|
||
if [[ -z $DISABLE_UAC ]]; then
|
||
ln -s $U $G/configs/c.1/
|
||
fi
|
||
if [[ -z $DISABLE_UVC ]]; then
|
||
ln -s $G/functions/uvc.usb0 $G/configs/c.1/
|
||
fi
|
||
|
||
# mkdir -p $G/functions/hid.usb0/os_desc
|
||
# mkdir -p $G/functions/hid.usb1/os_desc
|
||
# mkdir -p $U/os_desc
|
||
|
||
# ---------- optional Microsoft OS descriptors ----------------------
|
||
# if [ -e "$G/os_desc/use" ]; then
|
||
# echo 1 >"$G/os_desc/use"
|
||
# echo 0xcd >"$G/os_desc/b_vendor_code"
|
||
# echo "MSFT100" >"$G/os_desc/qw_sign"
|
||
|
||
# ln -s "$G/configs/c.1" "$G/os_desc" # creates $G/os_desc/conf
|
||
|
||
# echo "Lesavka Keyboard" >"$G/functions/hid.usb0/os_desc/interface"
|
||
# echo "Lesavka Mouse" >"$G/functions/hid.usb1/os_desc/interface"
|
||
# echo "Lesavka Mic+Spkr" >"$U/os_desc/interface"
|
||
# fi
|
||
|
||
#──────────────────────────────────────────────────
|
||
# 4. Bind gadget
|
||
#──────────────────────────────────────────────────
|
||
echo "$UDC" >"$G/UDC"
|
||
parts="hidg0,hidg1"
|
||
[[ -z $DISABLE_UAC ]] && parts+=",UAC2"
|
||
[[ -z $DISABLE_UVC ]] && parts+=",UVC"
|
||
log "🎉 gadget bound on $UDC ($parts)"
|
||
|
||
if wait_for_enum 50; then
|
||
log "✅ UDC state is '$UDC_STATE' (speed=$UDC_SPEED)"
|
||
else
|
||
log "⚠️ UDC state is '$UDC_STATE' (speed=$UDC_SPEED). Host not enumerated."
|
||
if [[ -z $DISABLE_UVC && "$UVC_FALLBACK" != "0" ]]; then
|
||
log "♻️ retrying without UVC (LESAVKA_UVC_FALLBACK=0 to disable)"
|
||
exec env LESAVKA_DISABLE_UVC=1 LESAVKA_UVC_FALLBACK=0 "$0"
|
||
fi
|
||
fi
|
||
|
||
exit 0
|