feat: add display interface

Author: TimNekk

src/display.py

@@ -0,0 +1,69 @@
+import machine
+from lib.i2c_lcd import I2cLcd
+
+
+class Symbol:
+    def __init__(self, index: int, data: bytearray):
+        self.index = index
+        self.data = data
+
+
+class Symbols:
+    TICK = Symbol(0, bytearray([0x00, 0x00, 0x01, 0x02, 0x14, 0x08, 0x00, 0x00]))
+    CROSS = Symbol(1, bytearray([0x00, 0x00, 0x11, 0x0A, 0x04, 0x0A, 0x11, 0x00]))
+
+
+class DisplayInterface:
+    def __init__(self, sda_pin: int, scl_pin: int):
+        self.__i2c = machine.I2C(0, sda=machine.Pin(sda_pin), scl=machine.Pin(scl_pin), freq=400000)
+        self.__lcd = I2cLcd(self.__i2c, 0x27, 2, 16)
+        self.__init_symbols()
+
+    def print(self, text: str, line: int = 1, position: int = 1, clear_line: bool = False, clear_full: bool = False):
+        self.__validate_inputs(line, position)
+        text = self.__trim_text(text)
+
+        if clear_full:
+            self.clear()
+
+        if clear_line:
+            self.clear(line)
+
+        self.__lcd.move_to(position - 1, line - 1)
+        self.__lcd.putstr(text)
+
+    def print_centered(self, text: str, line: int = 1):
+        self.__validate_inputs(line)
+        text = self.__trim_text(text)
+
+        self.__lcd.move_to(0, line - 1)
+        self.__lcd.putstr(text.center(16))
+
+    def clear(self, line: int = None):
+        self.__validate_inputs(line)
+
+        if line:
+            self.__lcd.move_to(0, line - 1)
+            self.__lcd.putstr(" " * 16)
+        else:
+            self.__lcd.clear()
+
+    def __init_symbols(self):
+        for symbol in Symbols.__dict__.values():
+            if isinstance(symbol, Symbol):
+                self.__lcd.custom_char(symbol.index, symbol.data)
+
+    @staticmethod
+    def __validate_inputs(line: int = None, position: int = None):
+        if line and line not in [1, 2]:
+            raise ValueError("Line must be 1 or 2")
+
+        if position and position not in range(1, 16):
+            raise ValueError("Position must be between 1 and 16")
+
+    @staticmethod
+    def __trim_text(text: str):
+        if len(text) > 16:
+            text = text[:16]
+
+        return text