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"""
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
"""
"""
Front-end configuration app for the TempDataLogger project. This script
configures the logger to the current system time and date, with a user
defined logging interval.
The logging interval should be specified in milliseconds and is rounded to
a multiple of 500ms.
Usage:
python temp_log_config.py <Log_Interval>
Example:
python temp_log_config.py 500
Requires the pywinusb library (https://pypi.python.org/pypi/pywinusb/).
"""
import sys
from datetime import datetime
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 = 0x2063
report_length = 1 + 7
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 configure_temp_log_device(device, time_date, log_interval_500ms):
# Report data for the demo is the report ID (always zero)
report_data = [0]
# Followed by the time/date data
report_data.extend([time_date.hour, time_date.minute,
time_date.second, time_date.day,
time_date.month, time_date.year - 2000])
# Lastly the log interval in 500ms units of time
report_data.extend([log_interval_500ms])
# 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)
def main(time_date, log_interval_500ms):
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))
configure_temp_log_device(hid_device, time_date, log_interval_500ms)
print("Time/Date is now set to %s" % time_date)
print("Log interval is now set to every %0.1fs" % (log_interval_500ms * (500.0 / 1000.0)))
finally:
hid_device.close()
if __name__ == '__main__':
time_date = datetime.now()
log_interval_500ms = (int(sys.argv[1]) / 500) if len(sys.argv) > 1 else 2
# Clamp the log interval to the allowable range
log_interval_500ms = max(log_interval_500ms, 0x01)
log_interval_500ms = min(log_interval_500ms, 0xFF)
main(time_date, log_interval_500ms)
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