Compiler warning

[David VB]

Hi there,

When trying to compile the following line:

I2CADRESS = 0b101 | (ADR1 << 1) | (ADR2 << 2) | (ADR3 << 3) | (ADR4 << 4)

the compiler gives me the following warnigs (but seems able to continue to compile)
"Warning Value out of range [5:0...1]"

I understand this as "The value of bit 5 is not between 0 and 1"

I2CADRESS is defined as byte

ADR1..ADR4 are aliases on input pins (on which DIP-SWITCHES are connected to choose the adress)  Ex: alias ADR1 is pin_c7

I am using a PIC16F1768 for this project.

Any idea how to avoid that warning ?   

[Rob CJ]

Hi David,

If ADRx is a bit should you not convert it first to a byte and then shift, so like this:

I2CADRESS = 0b101 | (byte(ADR1) << 1) | (byte(ADR2) << 2) | (byte(ADR3) << 3) | (byte(ADR4) << 4)

Kind regards,

Rob

---

Van: jal...@googlegroups.com <jal...@googlegroups.com> namens David VB <pinhe...@gmail.com>
Verzonden: woensdag 26 november 2025 16:57
Aan: jallist <jal...@googlegroups.com>
Onderwerp: [jallist] Compiler warning

 

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