fx2/usb_bulk_test.c

   1 /*
   2  * usb_bulk_test.c - test fx2 bulktransfer
   3  *
   4  * usage: ./usb_bulk_test device iface alt_setting ep_out ep_in
   5  * build: gcc -Wall -O3 usb_bulk_test.c -o usb_bulk_test
   6  *
   7  * author:hackbard@hackdaworld.org
   8  *
   9  */
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #include <sys/ioctl.h>
  17 #include <fcntl.h>
  18 #include <unistd.h>
  19
  20 #include <linux/version.h>
  21 #include <linux/usb.h>
  22 #include <linux/usbdevice_fs.h>
  23
  24 #define BUFLEN          (1024*10)
  25 #define BULKMAX         256
  26 #define TIMEOUT         1
  27
  28
  29 int main(int argc,char **argv) {
  30
  31         int usb_fd;
  32         int random_fd;
  33         int left;
  34         int ret,rx,tmp;
  35         unsigned char *tbuf;
  36         struct usbdevfs_bulktransfer tbulk;
  37         unsigned char *rbuf;
  38         struct usbdevfs_bulktransfer rbulk;
  39         struct usbdevfs_setinterface iface;
  40
  41
  42         if(argc!=6) {
  43                 printf("usage: %s device iface alt_setting ep_out ep_in\n",
  44                        argv[0]);
  45                 return -1;
  46         }
  47
  48         tbuf=(unsigned char *)malloc(BUFLEN);
  49         rbuf=(unsigned char *)malloc(BUFLEN);
  50         if((rbuf==NULL)||(tbuf==NULL)) {
  51                 perror("malloc test buffer");
  52                 return -1;
  53         }
  54
  55         usb_fd=open(argv[1],O_RDWR);
  56         if(usb_fd<0) {
  57                 perror("open usb device");
  58                 return usb_fd;
  59         }
  60
  61         random_fd=open("/dev/urandom",O_RDONLY);
  62         if(random_fd<0) {
  63                 perror("open random device");
  64                 return random_fd;
  65         }
  66         printf("\npoke random data into buffer ...");
  67         fflush(stdout);
  68         left=BUFLEN;
  69         while(left)
  70                 left-=read(random_fd,&(tbuf[BUFLEN-left]),left);
  71         printf(" done\n");
  72         close(random_fd);
  73
  74         iface.interface=atoi(argv[2]);
  75         iface.altsetting=atoi(argv[3]);
  76
  77         tbulk.ep=strtoul(argv[4],0,16);
  78         tbulk.timeout=TIMEOUT;
  79         tbulk.data=&tbuf;
  80
  81         rbulk.ep=strtoul(argv[5],0,16);
  82         rbulk.timeout=TIMEOUT;
  83         rbulk.data=&rbuf;
  84
  85         printf("\n");
  86         printf("summary:\n");
  87         printf("device %s\n",argv[1]);
  88         printf("interface %d\n",iface.interface);
  89         printf("alternate setting %d\n",iface.altsetting);
  90         printf("bulk ep (out) %0x2\n",tbulk.ep);
  91         printf("bulk ep (in) %0x2\n",rbulk.ep);
  92         printf("\n");
  93
  94         printf("setting interface %d, alternate setting %d\n",
  95                iface.interface,
  96                iface.altsetting);
  97
  98         ret=ioctl(usb_fd,USBDEVFS_SETINTERFACE,&iface);
  99         if(ret<0) {
 100                 perror("set interface");
 101                 return ret;
 102         }
 103
 104         left=BUFLEN;
 105         while(left) {
 106                 tbulk.data=&(tbuf[BUFLEN-left]);
 107                 rbulk.data=&(rbuf[BUFLEN-left]);
 108                 tbulk.len=BULKMAX;
 109                 printf("transmit ");
 110                 fflush(stdout);
 111                 ret=ioctl(usb_fd,USBDEVFS_BULK,&tbulk);
 112                 if(ret<0) {
 113                         perror("transmitting data");
 114                         return ret;
 115                 }
 116                 printf("done (%d) - receive ",ret);
 117                 fflush(stdout);
 118
 119                 rx=0;
 120                 while(ret) {
 121                         rbulk.len=ret;
 122                         rbulk.data=&(rbuf[BUFLEN-left+rx]);
 123                         tmp=ioctl(usb_fd,USBDEVFS_BULK,&rbulk);
 124                                 if(tmp<0) {
 125                                         perror("receiving data");
 126                                         return tmp;
 127                                 }
 128                         printf("[%d] ",tmp);
 129                         rx+=tmp;
 130                         ret-=tmp;
 131                 }
 132                 printf("done (%d)",rx);
 133
 134                 if(!memcmp(&tbuf[BUFLEN-left],&rbuf[BUFLEN-left],rx))
 135                         printf(" <--- equal!\n");
 136                 else
 137                         printf(" <--- differ! :(\n");
 138
 139                 left-=rx;
 140         }
 141
 142         close(usb_fd);
 143
 144         return 0;
 145 }