Aardvark-py Examples

Examples to understand how to use the python module aardvark-py to drive aardvark adapters

Setup Files and Pinout

pip install aardvark-py

Most informations for installation and pinout are in the online manual here : Aardvark I2C SPI Host Adapter User Manual

Linux

On Linux be careful you need to configure udev rules: chapter 3.3.1 UDEV

In this repository, you can find the file 99-totalphase.rules.

# cd path/to/aardvark-py-examples
sudo cp  files/99-totalphase.rules  /etc/udev/rules.d/99-totalphase.rules
sudo chmod 644 /etc/udev/rules.d/99-totalphase.rules

Devices Discovery

This example provides an example to list connected devices, print their serial numbers and features.

To find connected devices use those functions:

• aa_find_devices
• aa_find_devices_ext

Before using the aardvark you need to open it and get an handle:

• aa_open
• aa_close

To get version and features of the probe:

• aa_version
• aa_features

Versions are hex numbers for example 0x0300. You need to understand them as 2 digits version 0x0300 => 03.00

python3 discovery/device_simple_discovery.py

Master/Slave SPI/I2C examples

In this example, you can connect 2 aardvark together pin to pin and perform the following communications.

• i2c_master_read:
• i2c_master_write
• spi_master_write
• spi_slave_response

Those examples provides a slave and a master application. Start the slave first.

# First run the spi slave
python3 XXXX/slave.py

# Then trigger an spi write
python3 XXXX/master.py

Power pin

5V pins on aardvark are not connected by default.

• aa_target_power