I am configuring a display made of 32 8x8-matrices (MAX7219) and I want to split it to four zones to display different messages.
I started with the Parola Zone Display example and extended the MAX_DEVICES value to 32 and the MAX_ZONES value to 4, the zones are set up by
P.setZone(0, 0, 7);
P.setZone(1, 8, 15);
P.setZone(2, 16, 23);
P.setZone(3, 24, 31);
With this setup I get no message displayed, the display stays blank. Only when I change the last zone to
P.setZone(3, 24, 30);
all four zones are displayed, but the last zone is only 7 matrices wide instead of 8.
The Parola Scrolling example displays over all 32 matrices, just the zones do not work as they should.
Is this a known issue, i.e. is the number of matrices limited for zones?
Any helpful answer would help me a lot…