Remove obsolete audio and buzzer control documentation files, including detailed guides and HTML interfaces, to streamline the repository and eliminate redundancy. This cleanup enhances maintainability and focuses on essential resources for the reTerminal DM4 audio and buzzer functionalities.

2026-02-20 15:39:39 +02:00
parent 9656771d5a
commit 58d9144752
101 changed files with 80 additions and 193 deletions
--- a/archive/chromium-setup-legacy/BUZZER-CONTROL.md
+++ b/archive/chromium-setup-legacy/BUZZER-CONTROL.md
@@ -0,0 +1,152 @@
+# Buzzer Control - reTerminal DM4
+
+## Quick Reference
+
+**Device Path:** `/sys/class/leds/usr-buzzer/brightness`
+
+### Basic Commands
+
+```bash
+# Turn ON
+echo 1 | sudo tee /sys/class/leds/usr-buzzer/brightness
+
+# Turn OFF
+echo 0 | sudo tee /sys/class/leds/usr-buzzer/brightness
+
+# Check Status
+cat /sys/class/leds/usr-buzzer/brightness  # 0=OFF, 1/255=ON
+```
+
+### Single Beep
+
+```bash
+echo 1 | sudo tee /sys/class/leds/usr-buzzer/brightness
+sleep 0.2
+echo 0 | sudo tee /sys/class/leds/usr-buzzer/brightness
+```
+
+---
+
+## Test Scripts
+
+### Bash Script
+
+**Location on device:** `/home/pi/buzzer/test_buzzer.sh`
+
+**Run:**
+```bash
+ssh guard "/home/pi/buzzer/test_buzzer.sh"
+# or
+/home/pi/buzzer/test_buzzer.sh
+```
+
+**Tests included:**
+- Single beep
+- Double beep
+- Triple beep
+- Long beep
+- Rapid beeps
+- Slow beeps
+- Success pattern
+- Error pattern
+
+### Python Script
+
+**Location on device:** `/home/pi/buzzer/test_buzzer.py`
+
+**Run:**
+```bash
+ssh guard "python3 /home/pi/buzzer/test_buzzer.py"
+# or
+python3 /home/pi/buzzer/test_buzzer.py
+```
+
+**Same tests as bash script, with Python implementation**
+
+---
+
+## Python Control
+
+```python
+import subprocess
+import time
+
+BUZZER = '/sys/class/leds/usr-buzzer/brightness'
+
+def buzzer_on():
+    subprocess.run(['sudo', 'tee', BUZZER], input='1', text=True)
+
+def buzzer_off():
+    subprocess.run(['sudo', 'tee', BUZZER], input='0', text=True)
+
+def beep(duration=0.2):
+    buzzer_on()
+    time.sleep(duration)
+    buzzer_off()
+
+# Usage
+beep(0.2)  # Short beep
+beep(0.5)  # Long beep
+```
+
+---
+
+## Common Patterns
+
+### Success Alert (2 short beeps)
+```bash
+for i in 1 2; do
+    echo 1 | sudo tee /sys/class/leds/usr-buzzer/brightness
+    sleep 0.1
+    echo 0 | sudo tee /sys/class/leds/usr-buzzer/brightness
+    sleep 0.1
+done
+```
+
+### Error Alert (3 fast beeps)
+```bash
+for i in 1 2 3; do
+    echo 1 | sudo tee /sys/class/leds/usr-buzzer/brightness
+    sleep 0.05
+    echo 0 | sudo tee /sys/class/leds/usr-buzzer/brightness
+    sleep 0.05
+done
+```
+
+### Notification (1 short beep)
+```bash
+echo 1 | sudo tee /sys/class/leds/usr-buzzer/brightness
+sleep 0.2
+echo 0 | sudo tee /sys/class/leds/usr-buzzer/brightness
+```
+
+---
+
+## Troubleshooting
+
+**Buzzer not working?**
+1. Check device: `ls -la /sys/class/leds/usr-buzzer/`
+2. Test manually: `echo 1 | sudo tee /sys/class/leds/usr-buzzer/brightness`
+3. Verify permissions: Requires `sudo`
+
+**No sound?**
+- Check if buzzer is physically present
+- Try longer duration: `sleep 1` instead of `sleep 0.2`
+- Check kernel: `dmesg | grep -i buzzer`
+
+---
+
+## Notes
+
+- **Requires:** `sudo` privileges
+- **Type:** Simple on/off (no volume/frequency control)
+- **Location:** Bottom right corner of screen
+- **Use:** Alerts, notifications, system events
+
+---
+
+## Related Files
+
+- Test scripts: `/home/pi/buzzer/test_buzzer.sh` (bash), `/home/pi/buzzer/test_buzzer.py` (Python)
+- Detailed guide: `BUZZER-CONTROL-SIMPLE.md`
+- Flask API: `FLASK-BUZZER-CONTROL.md`