support for stlink v3set with alternative frmware without mass storage (has different pid)

Author: pavelrevak

swd/stlink/usb.py

@@ -121,7 +121,7 @@ class StlinkUsbV21M(StlinkUsbBase):
 
 
 class StlinkUsbV21(StlinkUsbBase):
-    """ST-Link/V2-1 USB communication"""
+    """ST-Link/V2-1 USB communication without mass storage"""
     ID_VENDOR = 0x0483
     ID_PRODUCT = 0x3752
     PIPE_OUT = 0x01
@@ -147,6 +147,15 @@ class StlinkUsbV3(StlinkUsbBase):
     DEV_NAME = "V3"
 
 
+class StlinkUsbV3(StlinkUsbBase):
+    """ST-Link/V3 USB communication without mass storage"""
+    ID_VENDOR = 0x0483
+    ID_PRODUCT = 0x3753
+    PIPE_OUT = 0x01
+    PIPE_IN = 0x81
+    DEV_NAME = "V3"
+
+
 class StlinkUsb:
     """ST-Link communication class"""
     STLINK_MAXIMUM_TRANSFER_SIZE = 6144