SH1106 requires a "row offset" due to RAM buffer size differences

[EAGrahamJr]

This chip has a slightly larger memory buffer per row than the SH1107 (132 vs 128), so currently the display is shifted and also draws a white line on the right-hand side.

NOTE This is running the modified driver from #19

Code running in picture:

import time, board,  displayio, i2cdisplaybus, terminalio
import adafruit_displayio_sh1106

# Select one to run
from adafruit_display_text import bitmap_label as label
# from adafruit_display_text import label as label

displayio.release_displays()
dw,dh = 128, 64

i2c = board.STEMMA_I2C()
display_bus = i2cdisplaybus.I2CDisplayBus(i2c, device_address=0x3C)
display = adafruit_displayio_sh1106.SH1106(display_bus, width=dw, height=dh)
display.wake()

maingroup = displayio.Group()
display.root_group = maingroup
text1 = label.Label(terminalio.FONT, text="helloworld...")
text1.anchor_point = (0.0, 0.0)
text1.anchored_position = (0, 0)
text2 = label.Label(terminalio.FONT, text="@edgjr       ")
text2.anchor_point = (0.0, 0.0)
text2.anchored_position = (0, dh / 2)


for t in (text1, text2):
    maingroup.append(t)

while True:
    try:
        text2.text = "%.1f" % time.monotonic()
        time.sleep(0.1)
    except KeyboardInterrupt:
        break

display.sleep()

[EAGrahamJr]

[EAGrahamJr]

Note the same issue occurs on Raspberry Pi using Blinka (the red frame in the picture does not obscure any part of the OLED screen).

[EAGrahamJr]

Might be related to adafruit/Adafruit_Blinka_Displayio#135

[EAGrahamJr]

User error using labels and a knock-off display