linty

Author: ladyada

adafruit_pcd8544.py

@@ -44,6 +44,7 @@
 """
 
 import time
+from micropython import const
 from adafruit_bus_device import spi_device
 try:
     import framebuf
@@ -73,6 +74,7 @@
 
 class PCD8544(object):
     """Nokia 5110/3310 PCD8544-based LCD display."""
+    # pylint: disable=too-many-instance-attributes
 
     def __init__(self, spi, dc_pin, cs_pin, reset_pin=None, *,
                  contrast=80, bias=4, baudrate=1000000):
@@ -100,6 +102,10 @@ def __init__(self, spi, dc_pin, cs_pin, reset_pin=None, *,
         self.fill_rect = self.framebuf.fill_rect
         self.rect = self.framebuf.rect
 
+        self._contrast = None
+        self._bias = None
+        self._invert = False
+
         self.reset()
         # Set LCD bias.
         self.bias = bias
@@ -120,11 +126,11 @@ def write_cmd(self, cmd):
         with self.spi_device as spi:
             spi.write(bytearray([cmd]))
 
-    def extended_command(self, c):
+    def extended_command(self, cmd):
         """Send a command in extended mode"""
         # Set extended command mode
         self.write_cmd(_PCD8544_FUNCTIONSET | _PCD8544_EXTENDEDINSTRUCTION)
-        self.write_cmd(c)
+        self.write_cmd(cmd)
         # Set normal display mode.
         self.write_cmd(_PCD8544_FUNCTIONSET)
         self.write_cmd(_PCD8544_DISPLAYCONTROL | _PCD8544_DISPLAYNORMAL)

examples/pcd8544_simpletest.py

@@ -33,13 +33,13 @@
 print("Lines test")
 # we'll draw from corner to corner, lets define all the pair coordinates here
 corners = ((0, 0), (0, display.height-1), (display.width-1, 0),
-        (display.width-1, display.height-1))
+           (display.width-1, display.height-1))
 
 display.fill(0)
 for corner_from in corners:
- for corner_to in corners:
-     display.line(corner_from[0], corner_from[1],
-                  corner_to[0], corner_to[1], 1)
+    for corner_to in corners:
+        display.line(corner_from[0], corner_from[1],
+                     corner_to[0], corner_to[1], 1)
 display.show()
 time.sleep(0.1)
 
@@ -48,7 +48,7 @@
 w_delta = display.width / 10
 h_delta = display.height / 10
 for i in range(11):
- display.rect(0, 0, int(w_delta*i), int(h_delta*i), 1)
+    display.rect(0, 0, int(w_delta*i), int(h_delta*i), 1)
 display.show()
 time.sleep(0.1)