Re: [U-Boot-Users] printf question

Jerry Walden wrote:

Okay - so this is probably not a big deal, however when I use the printf in u-boot as follows:

unsigned char x = 0xC2;

printf("this is the problem %02X\n", x);

result is:

this is the problem FFFFFFFC2

On most systems any datum of size less than int is implicitly converted to int when passed to a varargs function such as printf.

Char is typically signed so the conversion of any char with the 7 bit set will result in a negative integer.

0xC2 -> 0xFFFFFFFFC2.

To solve it just and with 0xFF.

Regards

Pantelis