Can ATTiny do I2C?

Introduction: ATTiny USI I2C Introduction – a Powerful, Fast, and Convenient Communication Interface for Your ATTiny Projects! I2C, it’s a standard that’s been around for around 20 years and has found uses in nearly every corner of the electronics universe.

Does USB use I2C?

USB-I2C Communications Module. The USB-I2C module provides a complete interface between your PC and the I2C bus. The module is self powered from the USB cable and can supply up to 70mA at 5v for external circuitry from a standard 100mA USB port. The module is an I2C master only, not a slave.

Does attiny85 support I2C?

ATtin85 microcontroller is equipped with Universal Serial interface aka USI which can be configured to operate in I2C mode. I2C mode using this USI interface is also referred as Two wire mode.

What is USI ATtiny?

Introduction. The Universal Serial Interface (USI) present in AVR devices like the ATtiny26, ATtiny2313, and ATmega169, is a communication module designed for TWI and SPI communication. The USI is however not restricted to these two serial communication standards. It can be used for UART communication as well.

What is ATtiny?

ATtiny (also known as TinyAVR) is a subfamily of the popular 8-bit AVR microcontrollers, which typically has fewer features, fewer I/O pins, and less memory than other AVR series chips. The first members of this family were released in 1999 by Atmel (later acquired by Microchip Technology in 2016).

Does ATtiny have UART?

The Arduino core for ATtiny includes a Software Serial library which implements a serial UART interface.

How to configure attiny85 in two wire or I2C mode?

The bits USIWM1 and USIWM0 need to set 0 and 1 to configure the ATtiny85 in two wire or I2C mode. USICS0, USICS1 and USICLK bits are used to select the clock that will be used for I2C communication.

Why can’t I2C read and write on the Arduino ATtiny?

The ‘Wire’ library that is used to read and write bytes from and to the I2C port on the arduino doesnt work on the attiny. It needs the TinyWireM library to act as an I2C master

How do I use i2c-tiny-USB with Linux?

The i2c-tiny-usb is meant to be used with Linux. It comes with a Linux kernel driver that bridges between the USB and I2C subsystems in the Linux kernel. The driver then attaches to the USB device and make the i2c bus available to the i2c subsystem.

What is the i2c-tiny-USB I2C clock delay?

The i2c-tiny-usb provides a software adjustable i2c clock delay allowing to configure the i2c clock. The default delay is 10us. Due to additional delays in the i2c bitbanging code this results in a i2c clock of about 50kHz. For simplicity reasons all USB transfers are done via the control endpoint.