Hi,does anybody know a way to print a degree sign ° on the display?thanks.
Update: maybe i fond my issue: after the display.update i have to make a display.updatewindow without rotation. now it works.But, on every updatewindow the display lost a bit of contrast. is it possible to fix this?
Hi ZinggJM,...Update: maybe i fond my issue: after the display.update i have to make a display.updatewindow without rotation. now it works.But, on every updatewindow the display lost a bit of contrast. is it possible to fix this?
I take it that there are some hidden "features" in those displays still. Like this flashing between two screen contents...To avoid this the display content needs to be written a second time to the display memory after the first update finishes (wait until not busy). This is what updateWindow does. Your first update call should be superfluous.The "partial update" doesn't really do a partial update - at least not from the perspective of the display. That one always draws the full area.What it does is a fast(er) update that is missing the double flashing that really refreshes all the pixel. So after some fast updates there should always be a full update to improve unchanged pixels.
Did you forget to call update() after the first println?I assume you use the 2.9inch display.A display.updateWindow to the full screen is required to avoid strange effects. Loss of contrast occurs after many partial updates or after long delay without full refresh.Did you observe this also with the PartialUpdateExample?, or modification of it with more repetitions and longer delays?You could also post your example for investigation. Thank you for the feedback.
Attached you will find a short example of my code.Here i have the following situation:not every pixel has the lost contrast issue.only, that pixel that is in the updatewindow area.Not every pixel of a number has the same contrast.is there any other way, to update partial area (or the hole screen), without flickering?