> Hello,
>
> All on-line tutorials on C just do'nt seem to cover all these
practical
> little things I need... these tutorials aren't much help for
> day to day issues with microcontroller programming I find :-/
>
> Problem: in the strings I define, some of the characters are custom
> defined (ASCII codes 0 to 7 in a text LCD module).
>
> I have some defines like such:
>
> #define LCD_CUSTOM_CHAR_FOO <any value from 0 to 7 and 0x80 and up>
>
> char example[] = "Example String";
>
> Now I need to insert the define "LCD_CUSTOM_CHAR_FOO" somewhere in
> the string, and have the compiler replace it with the hex code it
> stands for... how to instruct the compiler to do so ?!
>
> TIA
>
>
> Regards,
>
>
> --
> Vince, the devil is in the detail they say...
I'm not sure if this may be of any use to you, but I find it pretty
handy when I need to send special characters.
If you have a #define:
#define PDATA(type, ...) (__extension__({static type __nonamed[] PROGMEM
= __VA_ARGS__ ; &__nonamed[0];}))
You can specify any data you like in program memory, like PSTR() only
with data.
Eg.
PDATA(char,{0xB0,0x30,0x30,0xB2,0xA1,0x83,0x00})
I'd like to see this included in <avr/pgmspace.h>
Regards,
Michael.
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