remove bug in get function

myfrabuled/tm1640.py

@@ -52,7 +52,7 @@ class TM1640Matrix(LEDMatrix):
     
     def get(self, i: int, j: int) -> bool:
         """Get state of one pixel."""
-        return self.fb[7-i][7-j]
+        return self.fb[i][7-j]
 
     def set(self, i: int, j: int, state: bool):
         """Set state of one pixel."""