I2C Switch Library for C++

C++ Library to use with I2C Switch Raspberry Pi development board.

The example C++ files can be found in /ABElectronics_CPP_Libraries/I2CSwitch/demos

Downloading and Installing the library

To download to your Raspberry Pi type in the terminal:

git clone https://github.com/abelectronicsuk/ABElectronics_CPP_Libraries.git

Class:

I2CSwitch(uint8_t address)

The I2CSwitch class provides control over the I2C Switch outputs on the PCA9546A controller. Methods include setting and getting the I2C channel and resetting the switch.

Parameters: address - Initialise with the I2C address for the I2C Switch. Supported I2C addresses are 0x70 to 0x77. The default address is 0x70.
Returns: null

Methods:

switch_channel(uint8_t channel) 

Switch on the selected channel and switch off all other channels.
Parameters: channel - 1 to 4.
Returns: null

set_channel_state(uint8_t channel, uint8_t state) 

Set the state for the selected channel. All other channels remain in their previous state.
Parameter: channel - 1 to 4
Parameter: state - 1 or 0. 1 = channel on, 0 = channel off.
Returns: null

get_channel_state(uint8_t channel) 

Get the state for the selected channel.
Parameters: channel - 1 to 4
Returns: (uint8_t) 1 or 0. 1 = channel on, 0 = channel off.

reset() 

Reset the PCA9546A I2C switch. Resetting allows the PCA9546A to recover from a situation in which one of the downstream I2C buses is stuck in a low state. All channels will be set to an off-state.
Returns: null