I just gambled with my new lolshield. The usual demos ran fine; then I wanted to display some text, but the shield remained dark. So I stripped down the code to display only one letter:
void setup ()
void loop ()
LedSign::Set (4, 4, true);
Font::Draw ('A', 0, 0);
I expected that the letter 'A' blinks, but again the shield remained dark. If I delete the Font::Draw command, then the LED at (4,4) blinks as expected.
What am I missing here? (BTW: I'm using the IDE 1.0.1)