tweak rotation

Author: ladyada

adafruit_displayio_sh1107.py

@@ -26,9 +26,9 @@
 
 """
 
-import sys
 import displayio
 from micropython import const
+import sys
 
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_DisplayIO_SH1107.git"
@@ -86,6 +86,7 @@
         b"\xaf\x00"  # DISPLAY_ON
     )
     _PIXELS_IN_ROW = True
+    _ROTATION_OFFSET = 0
 else:
     _INIT_SEQUENCE = (
         b"\xae\x00"  # display off, sleep mode
@@ -96,16 +97,16 @@
         b"\xc0\x00"  # common output scan direction = 15 (0 to n-1 (POR=0))
         b"\xa8\x01\x3f"  # multiplex ratio = 128 (POR)
         b"\xd3\x01\x60"  # set display offset mode = 0x60
-        # b"\xd5\x01\x51"  # divide ratio/oscillator: divide by 2, fOsc (POR)
+        #b"\xd5\x01\x51"  # divide ratio/oscillator: divide by 2, fOsc (POR)
         b"\xd9\x01\x22"  # pre-charge/dis-charge period mode: 2 DCLKs/2 DCLKs (POR)
         b"\xdb\x01\x35"  # VCOM deselect level = 0.770 (POR)
-        # b"\xb0\x00"  # set page address = 0 (POR)
+        #b"\xb0\x00"  # set page address = 0 (POR)
         b"\xa4\x00"  # entire display off, retain RAM, normal status (POR)
         b"\xa6\x00"  # normal (not reversed) display
         b"\xaf\x00"  # DISPLAY_ON
     )
     _PIXELS_IN_ROW = False
-
+    _ROTATION_OFFSET = 90
 
 class SH1107(displayio.Display):
     """
@@ -125,6 +126,7 @@ def __init__(
         self,
         bus,
         display_offset=DISPLAY_OFFSET_ADAFRUIT_FEATHERWING_OLED_4650,
+        rotation=0,
         **kwargs
     ):
         init_sequence = bytearray(_INIT_SEQUENCE)
@@ -140,6 +142,7 @@ def __init__(
             set_vertical_scroll=0xD3,  # TBD -- not sure about this one!
             brightness_command=0x81,
             single_byte_bounds=True,
+            rotation=(rotation + _ROTATION_OFFSET) % 360,
             # for sh1107 use column and page addressing.
             #                lower column command = 0x00 - 0x0F
             #                upper column command = 0x10 - 0x17

examples/displayio_sh1107_simpletest.py

@@ -27,11 +27,10 @@
 # SH1107 is vertically oriented 64x128
 WIDTH = 128
 HEIGHT = 64
-ROTATION = 90
 BORDER = 2
 
 display = adafruit_displayio_sh1107.SH1107(
-    display_bus, width=WIDTH, height=HEIGHT, rotation=ROTATION
+    display_bus, width=WIDTH, height=HEIGHT, rotation=0
 )
 
 # Make the display context