1 /* ---------------------------------------------------------------------------- 2 * "THE BEER-WARE LICENSE" (Revision 42) (by Poul-Henning Kamp): 3 * <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you 4 * can do whatever you want with this stuff. If we meet some day, and you think 5 * this stuff is worth it, you can buy me a beer in return. Joerg Wunsch 6 * ---------------------------------------------------------------------------- 7 * 8 * $FreeBSD: head/share/examples/libusb20/util.c 257779 2013-11-07 07:22:51Z hselasky $ 9 */ 10 11 /* 12 * Helper functions common to all examples 13 */ 14 15 #include <stdio.h> 16 #include <stdint.h> 17 #include <stdlib.h> 18 19 #include <libusb20.h> 20 #include <libusb20_desc.h> 21 22 #include "util.h" 23 24 /* 25 * Print "len" bytes from "buf" in hex, followed by an ASCII 26 * representation (somewhat resembling the output of hd(1)). 27 */ 28 void 29 print_formatted(uint8_t *buf, uint32_t len) 30 { 31 int i, j; 32 33 for (j = 0; j < len; j += 16) 34 { 35 printf("%02x: ", j); 36 37 for (i = 0; i < 16 && i + j < len; i++) 38 printf("%02x ", buf[i + j]); 39 printf(" "); 40 for (i = 0; i < 16 && i + j < len; i++) 41 { 42 uint8_t c = buf[i + j]; 43 if(c >= ' ' && c <= '~') 44 printf("%c", (char)c); 45 else 46 putchar('.'); 47 } 48 putchar('\n'); 49 } 50 } 51