Top List: Advanced I2C Communications Protocol 2022

I2C Communications Protocol 2022

I2C Communication Protocol is becoming a critical component of embedded system architecture. If you wish to expand the peripheral functions of the microcontroller without delving into protocols, the complexity and power consumption will grow. Inter-Integrated Circuit is the abbreviation for Inter-Integrated Circuit. It’s a serial communication bus interface connection protocol that’s built into devices. It was first created in 1982 by Philips Semiconductor. I2C Communications Protocol has recently become a popular protocol for short-distance communication. Two Wired Interface is another name for it (TWI).

I2C Communication Protocol Article

Before proceeding, this article will provide a LATEST of The I2C Communications Protocol 2022! About the I2C Communications Protocol and learn how to use it with computing devices from Arduino, Raspberry Pi, and other embedded systems. For embedded devices such as Arduino, Raspberry Pi, and the like, the I2C protocol is the simplest way to use sensors and RTCs (real-time clocks), servo motors, and more. Many of the libraries you’ll need to utilize I2C will be available to download online.

In order to solve new problems, it’s important to know the fundamentals of I2C protocol in order to be able to use programming library calls instead of creating custom I2C devices. By having an awareness of I2C, you have a far greater selection of I2C communication protocol devices to work on and can develop your prototype from scratch.

How Does I2C Communication Protocol Work?

The I2C communication protocol method requires one device to act as the system’s peripherals manager. The host computer’s remaining peripherals (including microcontrollers) are set as slave devices. The slave devices address the system and send information to the host system in response to the commands of the peripherals manager.

Each slave device in the I2C bus has its own eight-bit address which is reserved for write access. The first 7 parts of that address are the device’s owner, and the last is 1 for write access and 0 for reading access.

Data in I2C is sent in 8-byte units (one byte). I2C communication protocol controls data transfer by piggybacking on a kind of handshake. If the master transmits one byte, it waits for the slave device to respond with one byte of an acknowledge bit whereas the master sends the next byte of data and repeats the process for the other byte. The master sends an acknowledgment bit to the slave before processing the next byte of data.

Visualizing I2C as Teacher and Student

In my experience, I found that it is an effective way to illustrate I2C Communication Protocol to envision the classroom setting it is the I2C master and the ICH2 and IC3 units as students.

The I2C master sends out one start bit.

I2C Step 2

In the I2C master, one start bit is sent out.

The I2C Master sends a command to the slave by writing the slave’s 7-bit address with a write bit.

Because all I2C communication protocol devices are connected to the same bus, they will all notice the incoming command, but only the device that the master has called will respond.

I2C Step 3

The slave receives an acknowledgment from the master in order to send the bytes that would comprise a command.

I2C Step 4

The master confirms the receipt of the next byte of data sent by the slave as acknowledgment.

The I2C master has only now transmitted the command to the I2C slave device.

The I2C slave device starts to send data to the master.

An I2C slave waits for an acknowledgment from the master before sending the subsequent byte of info.

The initial bit of information will be recognized before the slave provides supplemental information.

The I2C slave device sends the next byte of data to the master

When the I2C master gets the last byte of data from the I2C slave, it ends communication.

The same trade deal can happen between either the I2C master and any of the I2C slaves.

The same trade deal can happen between either the I2C master and any of the I2C slaves.

When using the I2C communication protocol in your design, there are a few things to keep in mind.

Given your technological platform, you should remember a few important facets as you commence your I2C implementation.

Manual Reading

Read the I2C communication protocol procedure to make sure you are using the appropriate microcontroller for your code. Read the I2C procedure for writing to your system.

List of all the ways the device can be used and stored into memory, for example: do you want this device to vibrate?

#define READ_SENSOR 0x54 Or const int READ_SENSOR = 0x54;

Initialize and test your I2C routines with a device

If you move from Arduino to a different type of coding platform, it’s a good idea to be aware that Arduino’s I2C capabilities will be immediately rendered obsolete. That makes it easier for you to troubleshoot problems that occur later when you transition to an alternative coding platform.

I2C Design Troubleshooting

It’s possible that once your idea is developed and functioning on I2C communication protocol connectivity, the communication will break down. If this happens, there are a few things you may do to double-check your design.

use an analyzer for logic

When it comes to troubleshooting serial connections, a logic analyzer is one of the most useful tools to have because it displays all of the specifics on the raw communication that occurs between each device.

Logic analyzers make recreational uses of your network data possible. Be sure you create a capture mode in your program for the start of the specific part of the communication you want to analyze. Logic analyzers are costly but highly recommended.

Identify Options for Duplicate Addresses

The datasheet of a particular device provides its specific address on the I2C bus, and how to change this address. However, some devices do not allow you to change the address that they provide in this way.

One possible alternative to solving the issue in question is using a second available I2C port or developing a software I2C port on the I2C master.

I2C communication protocol Resource includes additional resources:

•  Arduino Wire Library: This is a good place to begin working with I2C devices.
• Datasheet for Sensirion SHT Temperature & Humidity Sensor: I’ve found this datasheet to be quite useful in graphically illustrating the required I2C sequence.
• Phillips I2C Documentation: Those who are seriously considering the protocols may have to take a lengthier look at this one.

Educational Engineering: Team Educational Engineering Team is a Leading Team in Microcontroller Industry, with over 13 Years of Experience in Teaching and Doing Practical Projects. Educational Engineering Team has been in the Programming and Microcontroller business since 2007. We have been part of many projects. Over the course of these years – we have gained a good insight into students’ and educators’ needs. We are passionate about sharing all our collective knowledge with you. As of 2018, we have already taught over 250k students and counting.