Release interface and re-attach kernel drivers when closing port

This allows the OS to reuse the FTDI after using the port via pyftdi.
yulianbagnelbynorth · Mar 24, 2018 · 488be84 · 488be84
1 parent fa8534f
commit 488be84
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/pyftdi/ftdi.py b/pyftdi/ftdi.py
@@ -443,6 +443,12 @@ def close(self):
         if self.usb_dev:
             self.set_bitmode(0, Ftdi.BITMODE_RESET)
             self.set_latency_timer(self.LATENCY_MAX)
+            self.usb_dev._ctx.managed_release_interface(self.usb_dev,
+                                                        self.index - 1)
+            try:
+                self.usb_dev.attach_kernel_driver(self.index - 1)
+            except (NotImplementedError, usb.core.USBError):
+                pass
             UsbTools.release_device(self.usb_dev)
             self.usb_dev = None