![]() ![]() These 7 bits (the address) is always sent from the master toward the slaves. Address: Including 7 bits (10 bit in some cases) is the I2C address of the module that the master intends to communicate with.Then, the same thing goes for the SCL line, too. Start: At first, the SDA line voltage drops from High to Low level.The data being transmitted between 2 devices on the SDA line consists of the following parts: In a nutshell, we are going to add the TCA9548A I2C Multiplexer to the project and expand the I2C addresses of the modules with the same I2C address. In this tutorial, we are going to present a hardware solution for this problem. Generally speaking, this problem can be solved in both software and hardware. If you’re having the same problem, this tutorial can be helpful for you. This problem is a serious one which we all have definitely come across with at least once. But, if 2 or more of the modules had the same I2C address, we would face some apparently unsolvable problems in using them all. If they all have different I2C addresses, we could easily interface them, facing no serious trouble. Sometimes, we have interfaced some I2C modules with a microcontroller in our projects. In a lot of projects, we have used different modules and sensors that support I2C communication protocol. Have you ever wanted to use 2 sensors with the same I2C address at the same time, not knowing what to do? Faced some serious challenges in doing that?
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