diff --git a/avr/usbload/config.h b/avr/usbload/config.h
new file mode 100644
index 0000000..2255d24
--- /dev/null
+++ b/avr/usbload/config.h
@@ -0,0 +1,22 @@
+
+#ifndef __config_h__
+#define __config_h__
+
+#define DEBUG_USB                   1
+#define DEBUG_USB_RAW               1
+#define DEBUG_SRAM                  1
+#define DEBUG_SREG                  1
+#define DEBUG                       1
+
+
+#define REQ_IDLE                    0
+#define REQ_UPLOAD                  1
+#define REQ_CRC                     2
+
+#define USB_MAX_TRANS               0xff
+#define USB_CRC_CHECK               1
+
+#define BUFFER_SIZE                 0xff
+
+
+#endif 
diff --git a/avr/usbload/main.c b/avr/usbload/main.c
index a47626f..ef66877 100644
--- a/avr/usbload/main.c
+++ b/avr/usbload/main.c
@@ -100,6 +100,7 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
  * -------------------------------------------------------------------------
  */
     } else if (rq->bRequest == USB_CRC_ADDR) {
+        req_state = REQ_CRC;
         req_addr = rq->wValue.word;
         req_addr = req_addr << 16;
         req_addr = req_addr | rq->wIndex.word;
@@ -120,6 +121,7 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
         tx_buffer[1] = (crc >> 8) & 0xff;
         sei();
         ret_len = 2;
+        req_state = REQ_IDLE;
     }
 
     usbMsgPtr = data_buffer;