minr modifications

diff --git a/gemtag/gemtag.c b/gemtag/gemtag.c
index bca97eb..7a2e8ce 100644 (file)
--- a/gemtag/gemtag.c
+++ b/gemtag/gemtag.c
@@ -107,7 +107,8 @@ int gemtag_transcieve(struct gemtag_handle *gh,unsigned char cmd,
        /* usb write */
        printf("-> ");
        hexdump(txbuf,size);
-       usb_clear_halt(gh->handle,0x02);
+       if(usb_clear_halt(gh->handle,0x02))
+               perror("clear halt (out)");
        ret=usb_bulk_write(gh->handle,0x02,txbuf,size,0);
        if(ret<=0) {
                perror("usb bulk write");
@@ -115,14 +116,15 @@ int gemtag_transcieve(struct gemtag_handle *gh,unsigned char cmd,
        }
 
        /* usb read */
-       usb_clear_halt(gh->handle,0x81);
+       if(usb_clear_halt(gh->handle,0x81))
+               perror("clear halt (in)");
        ret=usb_bulk_read(gh->handle,0x81,rxbuf,sizeof(rxbuf),0);
        size=ret;
        if(ret<=0) {
                perror("usb bulk read");
                return ret;
        }
-       printf("-> ");
+       printf("<- ");
        hexdump(rxbuf,ret);
        
        if(rxhdr->seq!=txhdr->seq)