Add Python host test application for the low level GenericHID demo.

2 files changed, 97 insertions, 0 deletions

diff --git a/Demos/Device/LowLevel/GenericHID/HostTestApp/test_generic_hid.py b/Demos/Device/LowLevel/GenericHID/HostTestApp/test_generic_hid.py
new file mode 100644
index 000000000..491805509
--- /dev/null
+++ b/Demos/Device/LowLevel/GenericHID/HostTestApp/test_generic_hid.py
@@ -0,0 +1,96 @@
+"""
+             LUFA Library
+     Copyright (C) Dean Camera, 2013.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+"""
+
+"""
+    LUFA Generic HID device demo host test script. This script will send a
+    continuous stream of generic reports to the device, to show a variable LED
+    pattern on the target board. Send and received report data is printed to
+    the terminal.
+
+    Requires the pywinusb library (https://pypi.python.org/pypi/pywinusb/).
+"""
+
+import sys
+from time import sleep
+import pywinusb.hid as hid
+
+# Generic HID device VID, PID and report payload length (length is increased
+# by one to account for the Report ID byte that must be pre-pended)
+device_vid = 0x03EB
+device_pid = 0x204F
+report_length = 1 + 8
+
+
+def get_hid_device_handle():
+    hid_device_filter = hid.HidDeviceFilter(vendor_id=device_vid,
+                                            product_id=device_pid)
+
+    valid_hid_devices = hid_device_filter.get_devices()
+
+    if len(valid_hid_devices) is 0:
+        return None
+    else:
+        return valid_hid_devices[0]
+
+
+def send_led_pattern(device, led1, led2, led3, led4):
+    # Report data for the demo is the report ID (always zero) followed by the
+    # LED on/off data
+    report_data = [0, led1, led2, led3, led4]
+
+    # Zero-extend the array to the length the report should be
+    report_data.extend([0] * (report_length - len(report_data)))
+
+    # Send the generated report to the device
+    device.send_output_report(report_data)
+
+    print("Sent LED Pattern: {0}".format(report_data[1:5]))
+
+
+def received_led_pattern(report_data):
+    print("Received LED Pattern: {0}".format(report_data[1:5]))
+
+
+def main():
+    hid_device = get_hid_device_handle()
+
+    if hid_device is None:
+        print("No valid HID device found.")
+        sys.exit(1)
+
+    try:
+        hid_device.open()
+
+        print("Connected to device 0x%04X/0x%04X - %s [%s]" %
+              (hid_device.vendor_id, hid_device.product_id,
+               hid_device.product_name, hid_device.vendor_name))
+
+        # Set up the HID input report handler to receive reports
+        hid_device.set_raw_data_handler(received_led_pattern)
+
+        p = 0
+        while (hid_device.is_plugged()):
+            # Convert the current pattern index to a bit-mask and send
+            send_led_pattern(hid_device,
+                             (p >> 3) & 1,
+                             (p >> 2) & 1,
+                             (p >> 1) & 1,
+                             (p >> 0) & 1)
+
+            # Compute next LED pattern in sequence
+            p = (p + 1) % 16
+
+            # Delay a bit for visual effect
+            sleep(.2)
+
+    finally:
+        hid_device.close()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/Demos/Device/LowLevel/GenericHID/asf.xml b/Demos/Device/LowLevel/GenericHID/asf.xml
index 07d2822c3..6e4aecb23 100644
--- a/Demos/Device/LowLevel/GenericHID/asf.xml
+++ b/Demos/Device/LowLevel/GenericHID/asf.xml
@@ -41,6 +41,7 @@
 		<device-support-alias value="lufa_uc3"/>

 

 		<build type="distribute" subtype="user-file" value="GenericHID.txt"/>

+		<build type="distribute" subtype="directory" value="HostTestApp"/>

 

 		<build type="c-source" value="GenericHID.c"/>

 		<build type="c-source" value="Descriptors.c"/>