ekfsm 0.13.0a168.post1

The EKF System Management Library (ekfsm) is a sensor monitoring suite for Compact PCI Serial devices.

ekfsm - EKF system management library

Provides a python library framework for access to system management functions on Linux based modular hardware systems, such as CompactPCI-Serial systems.

Features

• System configuration via YAML configuration file
• Obtain inventory information of the system and its components
• Obtain sensor information, such as temperature, humidity, voltage, current, accelerometer, gyroscope, etc.
• Write and read EEPROM contents
• Access to system level functions, such as system LEDs, system fan, system power supply, etc.
• Supports simulation mode for development and testing
• Probing of desired boards in configured slots

Requirements

Prior to the use of I2C, PMBus or GPIO devices using the API, those devices have to be initialised by ACPI or manual device setup.

Example

In order to initialize an EEPROM of type AT24 behind a Mux channel 0, manualy add the device:

cd /sys/bus/i2c/devices/0-0074/channel-0/
echo 24c02 0x55 >new_device

Now we can access the EEPROM contents:

hd 8-0055/eeprom
00000000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00000100

Installation

To install the package via pip, you have to use a virtual environment to ensure full operabilty. Note: CLI entrypoint script won't work if installed in the system store!

Prepare virtual environment

First, name, create and activate your virtual environment (here myvenv):

$ python -m venv myvenv
$ source myvenv/bin/activate

Package install

Now install the ekfsm package and all dependencies from the project pypi registry:

(myvenv) $ pip install ekfsm --index-url https://gitlab.ekf.com/api/v4/projects/407/packages/pypi/simple
Looking in indexes: https://gitlab.ekf.com/api/v4/projects/407/packages/pypi/simple
Collecting ekfsm
  Downloading https://gitlab.ekf.com/api/v4/projects/407/packages/pypi/files/e400ee46de9346c086ce708675977cc6ab080c8c016d360970c82d1c436f7c89/ekfsm-0.12.0-py3-none-any.whl (43 kB)
Collecting anytree (from ekfsm)
  Using cached anytree-2.12.1-py3-none-any.whl.metadata (8.1 kB)
Collecting click>=8.0.1 (from ekfsm)
  Using cached click-8.1.8-py3-none-any.whl.metadata (2.3 kB)
Collecting crcmod (from ekfsm)
  Using cached crcmod-1.7-cp312-cp312-linux_x86_64.whl
Collecting gpiod>=2.1.0 (from ekfsm)
  Using cached gpiod-2.3.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (4.1 kB)
Collecting hexdump (from ekfsm)
  Using cached hexdump-3.3-py3-none-any.whl
Collecting more-itertools (from ekfsm)
  Using cached more_itertools-10.6.0-py3-none-any.whl.metadata (37 kB)
Collecting munch (from ekfsm)
  Using cached munch-4.0.0-py2.py3-none-any.whl.metadata (5.9 kB)
Collecting smbus2 (from ekfsm)
  Using cached smbus2-0.5.0-py2.py3-none-any.whl.metadata (6.9 kB)
Collecting types-pyyaml>=6.0.12.20241230 (from ekfsm)
  Using cached types_PyYAML-6.0.12.20241230-py3-none-any.whl.metadata (1.8 kB)
Collecting yamale (from ekfsm)
  Using cached yamale-6.0.0-py3-none-any.whl.metadata (22 kB)
Collecting six (from anytree->ekfsm)
  Using cached six-1.17.0-py2.py3-none-any.whl.metadata (1.7 kB)
Collecting pyyaml (from yamale->ekfsm)
  Using cached PyYAML-6.0.2-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (2.1 kB)
Using cached click-8.1.8-py3-none-any.whl (98 kB)
Using cached gpiod-2.3.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (103 kB)
Using cached types_PyYAML-6.0.12.20241230-py3-none-any.whl (20 kB)
Using cached anytree-2.12.1-py3-none-any.whl (44 kB)
Using cached more_itertools-10.6.0-py3-none-any.whl (63 kB)
Using cached munch-4.0.0-py2.py3-none-any.whl (9.9 kB)
Using cached smbus2-0.5.0-py2.py3-none-any.whl (11 kB)
Using cached yamale-6.0.0-py3-none-any.whl (57 kB)
Using cached PyYAML-6.0.2-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (767 kB)
Using cached six-1.17.0-py2.py3-none-any.whl (11 kB)
Installing collected packages: smbus2, hexdump, crcmod, types-pyyaml, six, pyyaml, munch, more-itertools, gpiod, click, yamale, anytree, ekfsm
Successfully installed anytree-2.12.1 click-8.1.8 crcmod-1.7 ekfsm-0.12.0 gpiod-2.3.0 hexdump-3.3 more-itertools-10.6.0 munch-4.0.0 pyyaml-6.0.2 six-1.17.0 smbus2-0.5.0 types-pyyaml-6.0.12.20241230 yamale-6.0.0

Example Usage Scenario

To use the library for a desired system, it must be configured in a system config yaml file:

# Example config
system_config:
  name: "Simple System"
  slots:
    - name: SYSTEM_SLOT
      slot_type: CPCI_S0_SYS
      desired_hwmodule_type: EKF SC9-Toccata
      desired_hwmodule_name: CPU
      attributes:
        is_master: true
    - name: SLOT1
      slot_type: CPCI_S0_PER
      desired_hwmodule_type: EKF SRF-SUR
      desired_hwmodule_name: SER
      attributes:
        slot_coding: 0x1

API

If you want to access the LEDs on the EKF SUR-UART, you can do the following:

import ekfsm

system = ekfsm.System("system.yaml")

# alternative ways to get the SUR HwModule
sur = system["SER"]    # by using the hwmodule name as key
sur = system.ser       # by using the hwmodule name as attribute
sur = system.slots["SLOT1"].hwmodule  # by using the slot name as key
sur = system.slots.slot1.hwmodule  # by using the slot name as attribute

# accessing the LED device
sur.led_a.set(0,"purple")  # set the color of the LED to purple

For further infos on all API aspects, please see the API Reference.

CLI

Upon activation of a venv provided with the ekfsm library, an entry point script ekfsm-cli is exported in the current shell.

See ekfsm-cli -h for a help on the usage.

Resources

Documentation

Source Code

Developer Wiki