diff --git a/core/src1/main.py b/core/src1/main.py
new file mode 100644
index 000000000..55eef0b93
--- /dev/null
+++ b/core/src1/main.py
@@ -0,0 +1,22 @@
+import usb
+
+usb.bus.open()
+
+import trezorio as io
+from trezorui import Display
+
+d = Display()
+
+d.clear()
+d.backlight(255)
+
+i = 0
+
+while True:
+    d.print("Loop %d\n" % i)
+    i += 1
+    r = [0, 0]
+    if io.poll([io.TOUCH], r, 1000000):
+        print("TOUCH", r)
+    else:
+        print("NOTOUCH")
diff --git a/core/src1/usb.py b/core/src1/usb.py
new file mode 100644
index 000000000..2582c9b07
--- /dev/null
+++ b/core/src1/usb.py
@@ -0,0 +1,29 @@
+import trezorio as io
+
+iface_wire = io.WebUSB(
+    iface_num=0,
+    ep_in=0x81,
+    ep_out=0x01,
+)
+
+iface_vcp = io.VCP(
+    iface_num=2,
+    data_iface_num=3,
+    ep_in=0x83,
+    ep_out=0x03,
+    ep_cmd=0x84,
+)
+
+bus = io.USB(
+    vendor_id=0x1209,
+    product_id=0x53C1,
+    release_num=0x0100,
+    manufacturer="SatoshiLabs",
+    product="TREZOR",
+    interface="TREZOR Interface",
+    serial_number="1234",
+    usb21_landing=False,
+)
+
+bus.add(iface_wire)
+bus.add(iface_vcp)