Hello, my question is that I only want to read some sensors connected to the pcf8574at pins, it is not clear to me what mode I should use for this purpose, I read everything as 1 byte or I should read them separately as
uint8_t val = pcf8574.digitalRead(P1);
uint8_t val = pcf8574.digitalRead(P2);
uint8_t val = pcf8574.digitalRead(P3);
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