Backup vom Rp2040Zero 16.05.2026 hinzugefügt

lcd1602_backup.py

@@ -0,0 +1,50 @@
+import time
+from machine import Pin
+
+class LCD1602:
+    def __init__(self, rs, en, d4, d5, d6, d7):
+        self.rs = Pin(rs, Pin.OUT)
+        self.en = Pin(en, Pin.OUT)
+        self.data_pins = [
+            Pin(d4, Pin.OUT),
+            Pin(d5, Pin.OUT),
+            Pin(d6, Pin.OUT),
+            Pin(d7, Pin.OUT)
+        ]
+        self._init_lcd()
+
+    def _pulse(self):
+        self.en.value(1)
+        time.sleep_us(1)
+        self.en.value(0)
+        time.sleep_us(100)
+
+    def _send(self, value, mode=0):
+        self.rs.value(mode)
+        for i in range(2):
+            for j in range(4):
+                self.data_pins[j].value((value >> (4 * (1 - i) + j)) & 0x01)
+            self._pulse()
+        time.sleep_ms(2)
+
+    def _init_lcd(self):
+        time.sleep_ms(20)
+        self._send(0x33)  # init
+        self._send(0x32)  # 4-bit mode
+        self._send(0x28)  # 2 lines, 5x7 matrix
+        self._send(0x0C)  # display on, cursor off
+        self._send(0x06)  # entry mode
+        self.clear()
+
+    def clear(self):
+        self._send(0x01)
+        time.sleep_ms(2)
+
+    def putstr(self, string):
+        for char in string:
+            self._send(ord(char), 1)
+
+    def move_to(self, col, row):
+        addr = col + (0x40 if row else 0x00)
+        self._send(0x80 | addr)
+