A sample python program that reads data from the OmniPreSense RADAR and takes actions (as developed by the customer)

$ python -m venv my_env
$ my_env\Scripts\activate
$ pip install requests serial

On Windows, the default /dev/ttyACM0 port is not he name of the USB port.
So on Windows, if using the first available port, run the program by

python ops_radar.py COM3

Linux users do not need to supply an argument (if /dev/ttyACM0 is correct). If using the UART pins, use /dev/ttyAMA0. If using another Unix flavor, change the code or pass the correct serial port argument.

The purpose of this program is to read radar data from an OPS24x RADAR (velocity) sensor and take action upon values (calling event handlers as appropriate). The handlers should reside in a different file, which should be imported into ops_radar.py

The event handlers have a baseline implementation in radar_actions.py and include

on_target_acquired(recent_speed)
on_target_accelerating(recent_speed)
on_target_decelerating(recent_speed)
on_target_lost()
on_idle_notice_interval()

radar_actions_ipcamera.py is a different implementation which can use a web interface of an IP camera. (This was originally developed to control an Axis camera)

• Change logging by setting the last value in the line logging.basicConfig(stream=sys.stderr, level=logging.INFO)
  WARN will show only warnings of failures. DEBUG gives information that might be helpful only when debugging. INFO is somewhere inbetween.

• When first trying out the code ("in a lab") you will probably want different setting so that you can wave at the sensor and see sensible results.

# These are for lab development only, so hand-waves are usable
OPS24X_UNITS_PREF = 'UC'  # "UC" for cm/s
TARGET_MAX_SPEED_ALLOWED = 150
OPS24X_DIRECTION_PREF = OPS24X_INBOUND_ONLY

Remove these when ready for road-side testing.