As you can see from the following picture it uses 22 7-segment digits to display various AP reference values. The 22 digits are controlled by 3 daisy-chained MAX7219 display controllers.
Now the issue I have is, that the displays sometimes take a very long time (several seconds) to display new values. I try to describe the situation:
- I'm flying under the control of the autopilot straight and level with a heading set to 85°for quite some time.
At some point I decide to change heading to 120°.
I turn the encoders clockwise.
The aircraft starts to bank and turning towards the set value.
The instrument in the 3D cockpit shows the selected value but the 7-segment displays still show the initial value of 85°
Only after some seconds the displays are updated.
When I continue to turn the encoder, the display updates rather quickly without much delay.
It looks like the display update process is in a sleep mode, maybe a timer issue... Just a wild guess.
Paul