From 25d731ed0b6a4beb1a3b01c20f8e150dc12a8848 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Wed, 13 Jun 2012 17:07:30 +0000
Subject: [PATCH] git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4274
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/hal/platforms/STM32/OTGv1/usb_lld.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/os/hal/platforms/STM32/OTGv1/usb_lld.c b/os/hal/platforms/STM32/OTGv1/usb_lld.c
index 5dc5a1052..d8e0f138d 100644
--- a/os/hal/platforms/STM32/OTGv1/usb_lld.c
+++ b/os/hal/platforms/STM32/OTGv1/usb_lld.c
@@ -775,6 +775,9 @@ void usb_lld_reset(USBDriver *usbp) {
   OTG->GRXFSIZ = STM32_USB_OTG1_RX_FIFO_SIZE / 4;
   otg_rxfifo_flush();
 
+  /* Resets the device address to zero.*/
+  OTG->DCFG = (OTG->DCFG & ~DCFG_DAD_MASK) | DCFG_DAD(0);
+
   /* Enables also EP-related interrupt sources.*/
   OTG->GINTMSK  |= GINTMSK_RXFLVLM | GINTMSK_OEPM  | GINTMSK_IEPM;
   OTG->DIEPMSK   = DIEPMSK_TOCM    | DIEPMSK_XFRCM;