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#!/usr/bin/env python
"""
LUFA Library
Copyright (C) Dean Camera, 2018.
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 hid
def get_hid_device_handle():
all_hid_devices = hid.enumerate()
lufa_hid_devices = [d for d in all_hid_devices if d['vendor_id'] == 0x03EB and d['product_id'] == 0x2063]
if len(lufa_hid_devices) is 0:
return None
device_handle = hid.device()
device_handle.open_path(lufa_hid_devices[0]['path'])
return device_handle
def configure_temp_log_device(device, time_date, log_interval_500ms):
report_data = bytearray(8)
# Report data for the demo is the report ID (always zero)
report_data[0] = 0
# Followed by the time/date data
report_data[1] = time_date.hour
report_data[2] = time_date.minute,
report_data[3] = time_date.second
report_data[4] = time_date.day,
report_data[5] = time_date.month
report_data[6] = time_date.year - 2000
# Lastly the log interval in 500ms units of time
report_data[7] = log_interval_500ms
# Send the generated report to the device
device.write(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:
print("Connected to device.", flush=True)
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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