The Adafruit_SSD1680 class increases its width parameter to the nearest multiple of 8 before constructing its framebuffers. This results in the framebuffer width not matching the display width whenever the latter is not a multiple of 8 (as is the case for the 122x250 resolution of the 2.13" E-ink Bonnet for Raspberry Pi). One consequence of this mismatch is that graphics are shifted (by 4 pixels in the case of the bonnet) when the rotation of the display is set to 1 or 2.
This was addressed for the SSD1675 and SSD1675B in 8022b34 by distinguishing between the width and stride of the framebuffer. The same fix should be ported to the SSD1680 driver.
ladyada
commented
3 years ago
The
Adafruit_SSD1680class increases itswidthparameter to the nearest multiple of 8 before constructing its framebuffers. This results in the framebuffer width not matching the display width whenever the latter is not a multiple of 8 (as is the case for the 122x250 resolution of the 2.13" E-ink Bonnet for Raspberry Pi). One consequence of this mismatch is that graphics are shifted (by 4 pixels in the case of the bonnet) when the rotation of the display is set to 1 or 2.This was addressed for the SSD1675 and SSD1675B in 8022b34 by distinguishing between the width and stride of the framebuffer. The same fix should be ported to the SSD1680 driver.