Main Site Documentation

I2C on ChipworkX


The ChipworkX manual shows PA7 and PA8 as the I2C pins.

Is this a hardware I2C port? The documentation says that I2C is software and you can use any pins so it seems strange that 2 pins are already allocated and that the AT91SAM9261 manual shows these as a hardware I2C interface.

A little clarification would be helpful :slight_smile:



These pins are Hardware I2C pins. For example on DevSys they have pull-up resistors and used by ChipworkX Dev sys to talk to onboard accelerometer.
With software I2C any pin can be used for I2C communication.