From 758f7f189bec31aead179ca6eaa1966dc247f17f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tobias=20B=C3=BCrmann?= <tb@nullschall.de>
Date: Wed, 25 Mar 2026 10:42:08 +0100
Subject: [PATCH] main_backstage

---
 main_backstage.py | 131 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 main_backstage.py

diff --git a/main_backstage.py b/main_backstage.py
new file mode 100644
index 0000000..dad0111
--- /dev/null
+++ b/main_backstage.py
@@ -0,0 +1,131 @@
+from machine import Pin
+import time
+import network
+import socket
+
+# ============================================================
+# WLAN ZUR PUPPE
+# ============================================================
+SSID = "BABY_PUPPE"
+PASSWORD = "TheaterBaby2026"
+PUPPET_IP = "192.168.4.1"
+UDP_PORT = 4210
+SHARED_SECRET = "babysecret"
+
+PING_INTERVAL_MS = 1000
+SEND_REPEAT_COUNT = 2
+SEND_REPEAT_DELAY_MS = 20
+
+# ============================================================
+# BUTTONS
+# ============================================================
+btn_cry  = Pin(2, Pin.IN, Pin.PULL_UP)
+btn_whim = Pin(3, Pin.IN, Pin.PULL_UP)
+btn_gig  = Pin(4, Pin.IN, Pin.PULL_UP)
+btn_stop = Pin(5, Pin.IN, Pin.PULL_UP)
+btn_poop = Pin(6, Pin.IN, Pin.PULL_UP)
+
+led = Pin("LED", Pin.OUT)
+
+DEBOUNCE_MS = 80
+last_ms = {
+    "cry": 0,
+    "whim": 0,
+    "gig": 0,
+    "stop": 0,
+    "poop": 0,
+}
+
+seq = 0
+last_ping_ms = 0
+
+def is_pressed(pin):
+    return pin.value() == 0
+
+def allow(key):
+    now = time.ticks_ms()
+    if time.ticks_diff(now, last_ms[key]) > DEBOUNCE_MS:
+        last_ms[key] = now
+        return True
+    return False
+
+# ============================================================
+# WLAN CONNECT
+# ============================================================
+wlan = network.WLAN(network.STA_IF)
+wlan.active(True)
+wlan.connect(SSID, PASSWORD)
+
+timeout = time.ticks_add(time.ticks_ms(), 10000)
+while not wlan.isconnected():
+    if time.ticks_diff(timeout, time.ticks_ms()) <= 0:
+        break
+    led.toggle()
+    time.sleep_ms(200)
+
+led.value(1 if wlan.isconnected() else 0)
+print("STA config:", wlan.ifconfig())
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+def next_seq():
+    global seq
+    seq += 1
+    return seq
+
+def send_packet(cmd, packet_seq=None):
+    if packet_seq is None:
+        packet_seq = next_seq()
+
+    payload = "{}|{}|{}".format(SHARED_SECRET, packet_seq, cmd)
+    sock.sendto(payload.encode("utf-8"), (PUPPET_IP, UDP_PORT))
+
+def send_command(cmd):
+    packet_seq = next_seq()
+
+    for _ in range(SEND_REPEAT_COUNT):
+        send_packet(cmd, packet_seq=packet_seq)
+        time.sleep_ms(SEND_REPEAT_DELAY_MS)
+
+    # kurzes LED-Feedback
+    led.off()
+    time.sleep_ms(30)
+    led.on()
+
+def send_ping():
+    packet_seq = next_seq()
+    send_packet("PING", packet_seq=packet_seq)
+
+# ============================================================
+# MAIN LOOP
+# ============================================================
+while True:
+    if not wlan.isconnected():
+        led.toggle()
+        time.sleep_ms(200)
+        continue
+
+    # Heartbeat
+    now = time.ticks_ms()
+    if time.ticks_diff(now, last_ping_ms) > PING_INTERVAL_MS:
+        last_ping_ms = now
+        send_ping()
+        led.value(1)
+
+    # STOP zuerst
+    if is_pressed(btn_stop) and allow("stop"):
+        send_command("STOP")
+
+    if is_pressed(btn_cry) and allow("cry"):
+        send_command("CRY")
+
+    if is_pressed(btn_whim) and allow("whim"):
+        send_command("WHIM")
+
+    if is_pressed(btn_gig) and allow("gig"):
+        send_command("GIG")
+
+    if is_pressed(btn_poop) and allow("poop"):
+        send_command("POOP")
+
+    time.sleep_ms(5)
\ No newline at end of file