jerome-wang.github.com

/************************************************************************

• Add Hexdump tool support. This is very useful sometimes when doing
• memory data or flash data debuging.
• Added by Jerome Wang. 2014-11-19.

**/

extern void printf (const char *fmt, ...);

static int isprint(int c) { return (c >= 0x20) && (c <= 0x7e); }

void hexdump(const unsigned char buff, int length, int offset) { int i = 0; int c = 0; unsigned char ascii[16sizeof(unsigned char)+1];

for (i = 0; i < length/16; i++)
{   
    for (c = 0; c < 16; c++)
    {
        if (!c)
        {
            printf("%08lx  ", offset + i*16 + c);
        }

        *(ascii+c) = isprint(*(buff+i*16+c)) ? *(buff+i*16+c) : '.';
        printf("%02x%s", (unsigned int)*(buff+i*16+c), (c+1==16/2)?"  ":" ");

        if (c == 15)
        {
            ascii[16*sizeof(unsigned char)] = '\0';
            printf(" |%s|\n", ascii);
        }
    }
}
memset(ascii, '.', 16*sizeof(unsigned char)+1);
for (c = 0; c < length%16; c++)
{
    if (!c) printf("%08lx  ", offset + length - length % 16);
    *(ascii+c)   = isprint(*(buff+length-length%16+c)) ? *(buff+length-length%16+c) : '.';
    *(ascii+16*sizeof(unsigned char)) = '\0';
    printf("%02x%s", (unsigned int)*(buff+length-length%16+c), (i+1==16/2)?"  ":" ");
    if (c == (length%16)-1)
    {
        for (i = 0; i < 16-c-1; i++) printf("   ");
        if (c >= 7) printf(" ");
        printf(" |%s|\n", ascii);
    }

}

return;

}