/*
This function lights up a some Leds in a column.
The pattern will be repeated on every column.
The pattern will blink along with the column-number.
column number 4 (index==3) will blink 4 times etc.
*/
void columns() {
for(int col=0;col<8;col++) {
delay(100);
lc.setColumn(0,col,0b10100000);
delay(100);
lc.setColumn(0,col,(byte)0);
for(int i=0;i<col;i++) {
delay(100);
lc.setColumn(0,col,0b10100000);
delay(100);
lc.setColumn(0,col,(byte)0);
}
}
}
