gs05-python

(still work in progress)

dependencies

obligatory

• python
• python-virtualenv
• libpq-dev (postgresql developer libs)

mandatory if using Raspberry Pi Shield (RS485) RB-RS485

• python-serial (if using Pi Shield)
• wiringpi (if using Pi Shield)

optional packages

• libffi-dev (for lcd display support)

recommended

• i2c-tools (for lcd display support)

used hardware

• Raspberry Pi Model B
• RS485:
  • DIGITUS USB - Seriell Adapter (RS485) DA-70157 or
  • JOY-iT Raspberry Pi Shield (RS485) RB-RS485
• GS05 QIS ODL-devices of the german Federal Office for Radiation Protection
  • https://odlinfo.bfs.de/DE/themen/wie-wird-gemessen/odl-sonde.html
  • https://odlinfo.bfs.de/DE/themen/wie-wird-gemessen/interpretation.html
• optional Display: JOY-iT SBC-LCD16X2
• optional: Temperatur-Sensor: JOY-iT LinkerKit Temp2 (http://www.linkerkit.de/index.php?title=LK-Temp2)

configuration

Copy config.ini.example to config.ini to have a initial configuration.

Section [serial]

device=

Device the probe is connected to. E.g. /dev/ttyS0 or /dev/ttyAMA0 (for Pi Shield RS485) or /dev/ttyUSB0 (for USB-Adapter)

serial parameters

baudrate=9600
bytesize=8
parity=N
stopbits=1
timeout=1

receivekey=

Key sent to request collected data from the probe

deviceid

Custom string to set the id of the probe, e.g. 1234Q, because the probes do not have an identifier in there sent data.

Section [lcd]

lcd=

1 to activate LCD support, empty for OFF

valueout=

Linenumber on the LCD display the measured values will be sent to. E.g. 2

timestamp=

Linenumber on the LCD display a timestamp will be sent to. E.g. 1. Empty if no timestamp shall be displayed (e.g. if a second device uses line 1.)

Section [polling]

Configure the data request
FIXME "receivekey should be moved to here"

waittime=

Seconds to wait for next data request. E.g. 60

repeat=

Number of duplicate Lines sent by the probe on data request. E.g. 3. this is used to detect transmission errors.

Section [db]

driver=

Which DB backend to use. Supported: sqlite, postgresql

sqlite=

SQLite connection string e.g. sqlite:///records.sqlite

postgresql connection parameters

host=localhost
port=5432
database=gs05
user=postgres
pass=pass

get it running

git clone --recursive https://github.com/mlechner/gs05-python.git
cd gs05-python
# adapt config.ini to your needs
cp config.ini.example config.ini
virtualenv venv
source venv/bin/activate
pip install --upgrade pip
# for lcd display support
pip install smbus-cffi
# mandatory steps
pip install .
python run.py

TODOS

• add more getter functions to class Records
• add Tests
• add package dependencies for optional functionalities
  • lcd
  • lk-temp2