3 files changed, 41 insertions, 0 deletions
diff --git a/src/portable/nuvoton/nuc120/dcd_nuc120.c b/src/portable/nuvoton/nuc120/dcd_nuc120.c
index e7bb4d431..050aea255 100644
--- a/src/portable/nuvoton/nuc120/dcd_nuc120.c
+++ b/src/portable/nuvoton/nuc120/dcd_nuc120.c
@@ -426,4 +426,16 @@ void dcd_irq_handler(uint8_t rhport)
   USBD->INTSTS = status & enabled_irqs;
 }
 
+void dcd_disconnect(uint8_t rhport)
+{
+  (void) rhport;
+  usb_detach();
+}
+
+void dcd_connect(uint8_t rhport)
+{
+  (void) rhport;
+  usb_attach();
+}
+
 #endif
diff --git a/src/portable/nuvoton/nuc121/dcd_nuc121.c b/src/portable/nuvoton/nuc121/dcd_nuc121.c
index e9fbc2220..df72cbb2d 100644
--- a/src/portable/nuvoton/nuc121/dcd_nuc121.c
+++ b/src/portable/nuvoton/nuc121/dcd_nuc121.c
@@ -442,4 +442,16 @@ void dcd_irq_handler(uint8_t rhport)
   USBD->INTSTS = status & enabled_irqs;
 }
 
+void dcd_disconnect(uint8_t rhport)
+{
+  (void) rhport;
+  usb_detach();
+}
+
+void dcd_connect(uint8_t rhport)
+{
+  (void) rhport;
+  usb_attach();
+}
+
 #endif
diff --git a/src/portable/nuvoton/nuc505/dcd_nuc505.c b/src/portable/nuvoton/nuc505/dcd_nuc505.c
index bb010a408..3baed87c5 100644
--- a/src/portable/nuvoton/nuc505/dcd_nuc505.c
+++ b/src/portable/nuvoton/nuc505/dcd_nuc505.c
@@ -126,6 +126,11 @@ static void usb_attach(void)
   USBD->PHYCTL |= USBD_PHYCTL_DPPUEN_Msk;
 }
 
+static void usb_detach(void)
+{
+  USBD->PHYCTL &= ~USBD_PHYCTL_DPPUEN_Msk;
+}
+
 static void usb_control_send_zlp(void)
 {
   USBD->CEPINTSTS = USBD_CEPINTSTS_STSDONEIF_Msk;
@@ -643,4 +648,16 @@ void dcd_irq_handler(uint8_t rhport)
   }
 }
 
+void dcd_disconnect(uint8_t rhport)
+{
+  (void) rhport;
+  usb_detach();
+}
+
+void dcd_connect(uint8_t rhport)
+{
+  (void) rhport;
+  usb_attach();
+}
+
 #endif