Add initial version with support for gamepad input

1 files changed, 54 insertions, 0 deletions

diff --git a/turtetris-master/usb_input.py b/turtetris-master/usb_input.py
new file mode 100644
index 0000000..8864ef9
--- /dev/null
+++ b/turtetris-master/usb_input.py
@@ -0,0 +1,54 @@
+import usb.core
+import usb.util
+
+# Personal Communication Systems, Inc. SNES Gamepad
+CONF_SNES_GAMEPAD = {
+    "idVendor": 0x0810,
+    "idProduct": 0xe501,
+    "iInterface": 0,
+}
+
+
+class Gamepad:
+    "Simple gamepad handle function"
+
+    def __init__(self, conf=CONF_SNES_GAMEPAD):
+        "Initializes usb subsystem"
+        self.dev = usb.core.find(idVendor=conf['idVendor'],
+                                 idProduct=conf['idProduct'])
+        if self.dev is None:
+            raise ValueError('Device not found')
+
+        if self.dev.is_kernel_driver_active(conf['iInterface']) is True:
+            # Detach any kernel driver so it won't interfere with us
+            self.dev.detach_kernel_driver(conf['iInterface'])
+
+        # set the active configuration. With no arguments, the first
+        # configuration will be the active one
+        self.dev.set_configuration()
+
+        # get an endpoint instance
+        self.cfg = self.dev.get_active_configuration()
+        intf = self.cfg[(0, 0)]
+
+        self.ep = usb.util.find_descriptor(
+            intf,
+            # match the first IN endpoint
+            custom_match=lambda e:
+            usb.util.endpoint_direction(e.bEndpointAddress) ==
+            usb.util.ENDPOINT_IN
+        )
+        assert self.ep is not None
+
+    def check(self):
+        "Check the input state"
+        data = self.dev.read(self.ep.bEndpointAddress,
+                             self.ep.wMaxPacketSize*2, 1000).tolist()
+        return {
+            "left": data[3] < 120 or bool(data[5] & 0x80),
+            "right": data[3] > 140 or bool(data[5] & 0x20),
+            "up": data[4] < 120 or bool(data[5] & 0x10),
+            "down": data[4] > 140 or bool(data[5] & 0x40),
+            "select": bool(data[6] & 0x10),
+            "start": bool(data[6] & 0x20),
+        }