rf_graphyte.rf_graphyte

Source code: rf_graphyte/rf_graphyte.py

Tests RF chip’s transmitting and receiving capabilities using Graphyte.

Description

A station-based test using Graphyte framework to validate RF chip’s transmitting and receiving capabilities in conductive or radiated way. Currently it supports WLAN, Bluetooth, and 802.15.4 technologies.

Graphyte is a RF testing framework that runs on Linux and ChromeOS, and provide a unified RF testing way for each product in Google. It contains three parts: Graphyte framework, DUT plugin and instrument plugin.

Test Procedure

This is an automated test without user interaction.

1. (Optional) Use pytest retrieve parameter to fetch the config files from the Chrome OS factory server.

2. Start running Graphyte framework with the assigned config file.

3. Parse the result and upload them via testlog.

Dependency

Need Graphyte framework with DUT and instrument plugins. This can be easily done by deploying a RF bundle. First, you need to make a RF bundle as follows.

# Inside Chromium chroot
cros_workon --board <board> start graphyte-<board>
emerge-<board> graphyte-<board>
ls /build/<board>/var/lib/graphyte/rf_bundle_*.tar.gz

This will generate the RF bundle named rf_bundle_*.tar.gz. Copy this to target machine, and install Graphyte by:

mkdir -p /tmp/graphyte
cd /tmp/graphyte
tar xvf /path/to/rf_bundle_xxx.tar.gz
./install_graphyte.sh
# Choose (Y) to install Graphyte to another folder
# Press (Enter) to install Graphyte to /usr/local
rm -rf /tmp/graphyte

Examples

To run Graphyte framework with the config file conductive_config.json, add this in test list:

{
  "pytest_name": "rf_graphyte.rf_graphyte",
  "args": {
    "graphyte_config_file": "conductive_config.json",
    "verbose": true
  }
}

Test Arguments

Name	Type	Description
graphyte_package	str	(optional; default: '/usr/local/graphyte/') Path to Graphyte package folder
graphyte_config_file	str	Path to Graphyte config file. This is passed to config-file parameter to Graphyte framework.
patch_dhcp_ssh_dut_ip	bool	(optional; default: False) Set to True if Goofy uses SSH link with DHCP enabled to connect to DUT. This will patch the IP from Goofy’s link into Graphyte’s target DUT IP configuration.
verbose	bool	(optional; default: True) Enable Graphyte debug logging