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assemblyarduinoledpins

How to turn on pins 13 and 12 at the same time? Assembly

How to turn on pins 13 and 12 at the same time?

ldi r18,0x20  ; bit 5 (pin 13) = high
out 5,r18     ; output to port B

ldi r18,0x10  ; bit 4 (pin 12) = high 
out 5,r18     ; output to port B
Solution

  • Just bitwise OR the values together to set both;

    ldi r18,0x30  ; 0x20 (bit 5) OR 0x10 (bit 4) = 0x30 sets bit 4 and 5 high
out 5,r18     ; output to port B