User Manual

CDriver User Guide 11

4.1.1 Reference

class i2cdriver.I2CDriver(port=’/dev/ttyUSB0’, reset=True)

A connected I2CDriver.

Variables

• product – product code e.g. i2cdriver1

• serial – serial string of I2CDriver

• uptime – time since I2CDriver boot, in seconds

• voltage – USB voltage, in V

• current – current used by attached device, in mA

• temp – temperature, in degrees C

• scl – state of SCL

• sda – state of SDA

• speed – current device speed in KHz (100 or 400)

• mode – IO mode (I2C or bitbang)

• pullups – programmable pullup enable pins

• ccitt crc – CCITT-16 CRC of all transmitted and re-

ceived bytes

init (port=’/dev/ttyUSB0’, reset=True)

Connect to a hardware i2cdriver.

Parameters

• port (str ) – The USB port to connect to

• reset (bool ) – Issue an I2C bus reset on connection

setspeed(s)

Set the I2C bus speed.

Parameters s (int ) – speed in KHz, either 100 or 400

setpullups(s)

Set the I2CDriver pullup resistors

Parameters s – 6-bit pullup mask