diff --git a/uartloop.py b/uartloop.py
new file mode 100644
index 0000000..503f91d
--- /dev/null
+++ b/uartloop.py
@@ -0,0 +1,13 @@
+import pyb
+
+def UARTPassThruLoop(bus_usb, bus_uart):
+  bus_usb.setinterrupt(-1)
+  while True:
+    if bus_usb.any(): bus_uart.write(bus_usb.read(256))
+    if bus_uart.any(): bus_usb.write(bus_uart.read(256))
+
+def UARTPassThru(id_uart, baud_uart):
+  uart=pyb.UART(id_uart,baud_uart,timeout=75,timeout_char=75)
+  usb=pyb.USB_VCP()
+  print("Now entering UART passthru loop. To exit, reset.")
+  UARTPassThruLoop(usb, uart)
\ No newline at end of file