Hello, I don't understand this: uint8_t val = 194; why is this working: PORTF |= val & 0xf0; but not that: PORTF |= val & 128; PORTF |= val & 64; PORTF |= val & 32; PORTF |= val & 16; I've read some issues with the fuses and the PORTF, but I don't thinks thats the problem. By the way, the …

PORTF write issue (Arduino ProMicro 32u4)

westfw May 23, 2018, 9:57am 4

Should work. Can you post a complete not-working program?

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