* Need to change stdin to non-blocking. */

		n = fcntl(0,F_GETFL);
		if(n<0) {
			fprintf(stderr,"Trouble getting stdin flags\n");
			n = 0;
		}
		n = fcntl(0,F_SETFL,n|O_NONBLOCK);
		if(n<0) {
			fprintf(stderr,"Trouble setting stdin flags\n");
			n = 0;
		}

		n = 0;
		k = 1;
		for(;;) {
			char outbuf[1024];
			char inbuf[1024];
			if(n==0) {
				n = read( 0, outbuf, 1024 );
				if(n<0) {
					if(errno == EAGAIN) {
						usleep(10000);
						n = 0;
					}
					else {
						fprintf(stderr,"read n= %d err = %d\n",n,errno);
					}
				}
			}
			if(n>0) {
				int rtn;
				rtn = usb_bulk_write(usbhandle,0x02,outbuf,n-1,10); 
				if(rtn >= 0) n = 0;
				fprintf(stderr,"usb_bulk_write %d\n",rtn);
			}
			if(k==0) {
				int rtn;
				rtn = usb_bulk_read(usbhandle,0x06,inbuf,1024,10); 
				if(rtn != -110) fprintf(stderr,"Got %d\n",rtn);
				if(rtn>0) k = rtn;
			}
			if(k>0) {
				fprintf(stdout,"usb read %d bytes\n",k);
				/* TODO: Print them. */
				k = 0;
			}
		}