121 lines
2.4 KiB
C
121 lines
2.4 KiB
C
/* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42) (by Poul-Henning Kamp):
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* <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
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* ----------------------------------------------------------------------------
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*
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* $FreeBSD$
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*/
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/*
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* Helper functions common to all examples
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <libusb20.h>
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#include <libusb20_desc.h>
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#include "aux.h"
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/*
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* Return a textual description for error "r".
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*/
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const char *
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usb_error(enum libusb20_error r)
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{
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const char *msg = "UNKNOWN";
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switch (r)
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{
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case LIBUSB20_SUCCESS:
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msg = "success";
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break;
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case LIBUSB20_ERROR_IO:
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msg = "IO error";
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break;
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case LIBUSB20_ERROR_INVALID_PARAM:
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msg = "Invalid parameter";
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break;
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case LIBUSB20_ERROR_ACCESS:
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msg = "Access denied";
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break;
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case LIBUSB20_ERROR_NO_DEVICE:
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msg = "No such device";
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break;
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case LIBUSB20_ERROR_NOT_FOUND:
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msg = "Entity not found";
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break;
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case LIBUSB20_ERROR_BUSY:
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msg = "Resource busy";
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break;
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case LIBUSB20_ERROR_TIMEOUT:
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msg = "Operation timed out";
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break;
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case LIBUSB20_ERROR_OVERFLOW:
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msg = "Overflow";
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break;
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case LIBUSB20_ERROR_PIPE:
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msg = "Pipe error";
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break;
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case LIBUSB20_ERROR_INTERRUPTED:
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msg = "System call interrupted";
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break;
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case LIBUSB20_ERROR_NO_MEM:
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msg = "Insufficient memory";
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break;
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case LIBUSB20_ERROR_NOT_SUPPORTED:
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msg = "Operation not supported";
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break;
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case LIBUSB20_ERROR_OTHER:
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msg = "Other error";
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break;
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}
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return msg;
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}
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/*
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* Print "len" bytes from "buf" in hex, followed by an ASCII
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* representation (somewhat resembling the output of hd(1)).
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*/
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void
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print_formatted(uint8_t *buf, uint32_t len)
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{
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int i, j;
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for (j = 0; j < len; j += 16)
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{
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printf("%02x: ", j);
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for (i = 0; i < 16 && i + j < len; i++)
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printf("%02x ", buf[i + j]);
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printf(" ");
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for (i = 0; i < 16 && i + j < len; i++)
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{
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uint8_t c = buf[i + j];
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if(c >= ' ' && c <= '~')
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printf("%c", (char)c);
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else
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putchar('.');
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}
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putchar('\n');
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}
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}
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