FreeBSD I2C wrapper for Python

The pyfbsdi2c-tspspi project contains a very thin wrapper for the ioctl requests for the iic device on FreeBSD to test various hardware devices from Python. It allows direct access to the I2C bus on devices like the RaspberryPi when running under FreeBSD.

Installation

pip install pyfbsdi2c-tspspi

Usage

The bus can be instantiated using context management of it's constructor. One can select the bus via it's first constructor argument:

from fbsdi2c import FbsdI2C

To instantiate via context management one can use:

with FbsdI2C() as i2c:
    # Use i2c.

To instantiate using the constructor:

i2c = FbsdI2C()
# Use i2c.

To use multiple busses:

i2c0 = FbsdI2C("/dev/iic0")
i2c1 = FbsdI2C("/dev/iic1")

Supported methods

This module exposes the pylabdevs I2CBus interface:

Scanning for bus devices

To print a list with all device addresses that respond:

with FbsdI2C() as i2c:
    print(i2c.scan())

Reading and writing from a buffer

with FbsdI2C() as i2c:
    i2c.write(0x33, bytearray(1,2,3))
    data = i2c.read(0x33, 5)