I am using SPI to control LEDs via serial registers. Works fine: void loop() { SPI.transfer(matrica[1][1]); dilej(); SPI.transfer(matrica[1][2]); dilej(); SPI.transfer(matrica[1][3]); dilej(); } Doesn't work at all ISR(TIMER_1_COMPA_vect) { SPI.transfer(matrica[1][1]); dilej();…

SPI in loop() working fine, but not in ISR TIMER 1 interrupt

system April 15, 2012, 10:13pm 3

Ok, I typed sei() in the beggining of ISR function, but it doesn't work. Or did I misunderstood you?

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