3 files changed, 9 insertions, 4 deletions
diff --git a/src/portable/microchip/samd21/dcd_samd21.c b/src/portable/microchip/samd21/dcd_samd21.c
index 8ecfd3668..9a9964505 100644
--- a/src/portable/microchip/samd21/dcd_samd21.c
+++ b/src/portable/microchip/samd21/dcd_samd21.c
@@ -223,9 +223,9 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
   UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
 
   if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN) {
-    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1;
+    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1 | USB_DEVICE_EPSTATUSCLR_DTGLIN;
   } else {
-    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0;
+    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0 | USB_DEVICE_EPSTATUSCLR_DTGLOUT;
   }
 }
 
diff --git a/src/portable/microchip/samd51/dcd_samd51.c b/src/portable/microchip/samd51/dcd_samd51.c
index d2e7aaf7d..6a4bd0e63 100644
--- a/src/portable/microchip/samd51/dcd_samd51.c
+++ b/src/portable/microchip/samd51/dcd_samd51.c
@@ -227,9 +227,9 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
   UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
 
   if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN) {
-    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1;
+    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ1 | USB_DEVICE_EPSTATUSCLR_DTGLIN;
   } else {
-    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0;
+    ep->EPSTATUSCLR.reg = USB_DEVICE_EPSTATUSCLR_STALLRQ0 | USB_DEVICE_EPSTATUSCLR_DTGLOUT;
   }
 }
 
diff --git a/src/portable/nordic/nrf5x/dcd_nrf5x.c b/src/portable/nordic/nrf5x/dcd_nrf5x.c
index 3e5f69f79..53f92bb19 100644
--- a/src/portable/nordic/nrf5x/dcd_nrf5x.c
+++ b/src/portable/nordic/nrf5x/dcd_nrf5x.c
@@ -322,7 +322,12 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
 
   if ( tu_edpt_number(ep_addr)  )
   {
+    // clear stall
     NRF_USBD->EPSTALL = (USBD_EPSTALL_STALL_UnStall << USBD_EPSTALL_STALL_Pos) | ep_addr;
+
+    // reset data toggle to DATA0
+    NRF_USBD->DTOGGLE = (USBD_DTOGGLE_VALUE_Data0 << USBD_DTOGGLE_VALUE_Pos) | ep_addr;
+
     __ISB(); __DSB();
   }
 }