[avr-gcc-list] Re: Passing a string variable to lcd_puts

[David Brown]

David VanHorn wrote:
>  
> I was originally declaring my variable passed to lcd_puts as
>  
> signed char LCD_String[LCD_Line_Len + 1]
>  
> This, after discovering to my surprise that lcd_puts wants signed chars.
>  
> Recently, I've converted to the portable typedefs as
>  
> unit8_t and int8_t
>  
> Now, whichever of those I use, I get a warning:
>  warning: pointer targets in passing argument 1 of 'lcd_puts' differ in 
> signedness
>
> According to stdint.h, int8_t is supposed to be signed, which I 
> understand to be the same as char.
>  
> So what am I missing?
>  
> And as a secondary question, why does lcd_puts want signed data?  Seems 
> nonsensical to me..

I know what *I* am missing - the source code!  How is anyone supposed to 
help you with your problem until you post the actual compilable code 
snippet?  We need a compilable code sample which demonstrates the 
problem, along with the compiler flags you used and also the compiler 
version you used.  Getting a warning for int8_t but not for "signed 
char" is not expected behaviour, and I think many people (as well as 
you) would be interested to find out if that is really the case, and if 
so, if there is some strange compiler issue.  But we need the code so 
that other people can test this.

I had hoped that after being asked so many times to post code snippets 
in previous threads, that you would have thought of this yourself.  I'm 
happy to spend time helping out (when I have the chance), but I'm not 
fond of repeating myself.

mvh.,

David