更新支持矩阵按键库

boards/default_src/micropython/origin/build/lib/keypad.py

@@ -0,0 +1,49 @@
+"""
+Simple Keypad
+
+Micropython library for the Simple Keypad
+=======================================================
+
+#Based on Author: 'Teeraphat Kullanankanjana' 
+@dahanzimin From the Mixly Team
+"""
+
+from machine import Pin
+from time import sleep
+
+class Keypad:
+    def __init__(self, row_pins, column_pins, keys):
+        """Initialize the keypad object."""
+        if not all(isinstance(pin, Pin) for pin in row_pins):
+            raise ValueError("Row pins must be instances of Pin.")
+        
+        if not all(isinstance(pin, Pin) for pin in column_pins):
+            raise ValueError("Column pins must be instances of Pin.")
+        
+        if not isinstance(keys, list) or not all(isinstance(row, list) for row in keys):
+            raise ValueError("Keys must be a 2D list.")
+
+        self.row_pins = row_pins
+        self.column_pins = column_pins
+        self.keys = keys
+
+        for pin in self.row_pins:
+            pin.init(Pin.IN, Pin.PULL_UP)
+
+        for pin in self.column_pins:
+            pin.init(Pin.OUT)
+
+        if len(self.row_pins) > len(self.keys) or len(self.column_pins) > len(self.keys[0]):
+            raise ValueError("Number of row/column pins does not match the key layout size.")
+
+    def read_keypad(self):
+        """Read the keypad and return the pressed key."""
+        for col_pin in self.column_pins:
+            col_pin.value(0)
+            for i, row_pin in enumerate(self.row_pins):
+                if not row_pin.value():
+                    key_pressed = self.keys[i][self.column_pins.index(col_pin)]
+                    col_pin.value(1)
+                    return key_pressed
+            col_pin.value(1)
+        return None