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Re: MAX7219 behaves strangely with various PICs and config.
Found the reason, but don't know why it happens.
It depends on Max_dp variable.
If it equals 5 or 4, then there's no problem. If 3, 2, or 1, it causes problem. if DP=3, then hangs on 2800 (around), if DP=2, then hangs on 280, if DP=1, then hangs on 8.
What might be the reason?
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Re: MAX7219 behaves strangely with various PICs and config.
If anyone interested, the reason for this issue was noisy power supply. Added 100uf capacitor at 7219 power pins - problem gone.
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