/* Name: hidtool.c * Project: hid-data example * Author: Christian Starkjohann * Creation Date: 2008-04-11 * Tabsize: 4 * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt) * This Revision: $Id: hidtool.c 692 2008-11-07 15:07:40Z cs $ */#include <stdio.h>#include <string.h>#include <stdlib.h>#include "hiddata.h"#include "../firmware/usbconfig.h"  /* for device VID, PID, vendor name and product name *//* ------------------------------------------------------------------------- */static char *usbErrorMessage(int errCode){static char buffer[80];    switch(errCode){        case USBOPEN_ERR_ACCESS:      return "Access to device denied";        case USBOPEN_ERR_NOTFOUND:    return "The specified device was not found";        case USBOPEN_ERR_IO:          return "Communication error with device";        default:            sprintf(buffer, "Unknown USB error %d", errCode);            return buffer;    }    return NULL;    /* not reached */}static usbDevice_t  *openDevice(void){usbDevice_t     *dev = NULL;unsigned char   rawVid[2] = {USB_CFG_VENDOR_ID}, rawPid[2] = {USB_CFG_DEVICE_ID};char            vendorName[] = {USB_CFG_VENDOR_NAME, 0}, productName[] = {USB_CFG_DEVICE_NAME, 0};int             vid = rawVid[0] + 256 * rawVid[1];int             pid = rawPid[0] + 256 * rawPid[1];int             err;    if((err = usbhidOpenDevice(&dev, vid, vendorName, pid, productName, 0)) != 0){        fprintf(stderr, "error finding %s: %s\n", productName, usbErrorMessage(err));        return NULL;    }    return dev;}/* ------------------------------------------------------------------------- */static void hexdump(char *buffer, int len){int     i;FILE    *fp = stdout;    for(i = 0; i < len; i++){        if(i != 0){            if(i % 16 == 0){                fprintf(fp, "\n");            }else{                fprintf(fp, " ");            }        }        fprintf(fp, "0x%02x", buffer[i] & 0xff);    }    if(i != 0)        fprintf(fp, "\n");}static int  hexread(char *buffer, char *string, int buflen){char    *s;int     pos = 0;    while((s = strtok(string, ", ")) != NULL && pos < buflen){        string = NULL;        buffer[pos++] = (char)strtol(s, NULL, 0);    }    return pos;}/* ------------------------------------------------------------------------- */static void usage(char *myName){    fprintf(stderr, "usage:\n");    fprintf(stderr, "  %s read\n", myName);    fprintf(stderr, "  %s write <listofbytes>\n", myName);}int main(int argc, char **argv){usbDevice_t *dev;char        buffer[129];    /* room for dummy report ID */int         err;    if(argc < 2){        usage(argv[0]);        exit(1);    }    if((dev = openDevice()) == NULL)        exit(1);    if(strcasecmp(argv[1], "read") == 0){        int len = sizeof(buffer);        if((err = usbhidGetReport(dev, 0, buffer, &len)) != 0){            fprintf(stderr, "error reading data: %s\n", usbErrorMessage(err));        }else{            hexdump(buffer + 1, sizeof(buffer) - 1);        }    }else if(strcasecmp(argv[1], "write") == 0){        int i, pos;        bzero(buffer, sizeof(buffer));        for(pos = 1, i = 2; i < argc && pos < sizeof(buffer); i++){            pos += hexread(buffer + pos, argv[i], sizeof(buffer) - pos);        }        if((err = usbhidSetReport(dev, buffer, sizeof(buffer))) != 0)   /* add a dummy report ID */            fprintf(stderr, "error writing data: %s\n", usbErrorMessage(err));    }else{        usage(argv[0]);        exit(1);    }    usbhidCloseDevice(dev);    return 0;}/* ------------------------------------------------------------------------- */