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This code incorporates the Wire library which is a library included with Arduino IDE that handles I2C communication. In order to do so, after wiring up the module to your Arduino, you should just upload the code attached, onto your Arduino. If you are interested to know more about the details and theories about I2C bus, you can use following references:Īs a first step on connecting to an I2C enabled device, you need to have the address of the module. I2C OLED display module) we should first find its I2C address and this is what we’ll do first on next steps. This means that in order to send a data to an output device using I2C (e.g. When a node wants to send some data, the very first byte of the data should be the address of the receiver and then actual data comes afterwards. During that transfer, any device addressed by this master is considered a slave and reads that data. Normally a master device is the device that initiates a data transfer on the bus and generates the clock signals to permit the transfer. For example an OLED display module is a receiver which accepts some data and displays them, while a temperature sensor is a transceiver that sends captured temperature via I2C bus. All devices that want to transfer data via I2C should have a unique address and can operate as either transmitter or receiver depending on the function of the device. The transmission speed can be up to 3.4 Mbps.
ARDUINO LCD LIBRARY HOW TO WRITE BLANK LINE SERIAL
Data is transferred between the master and slave through a serial data (SDA) line.
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It’s a signal that would be sent continuously by master during the transfer and all other nodes connected to the bus will use it to sync their communication and detect the speed of the bus. Typically the master node is in charge of controlling the bus – which is actually done by generating a synchronization signal on the serial clock line (SCL).
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I2C consists of a communication bus made of two wire that supports bidirectional data transfer between a master and several slave devices. Due to its simplicity, it became so popular that after awhile it became one of the primary mechanisms of data transfer for CPUs and MCUs and peripheral devices that are not necessary part of the same PCB board and are connected to it via wire (e.g. It was basically targeted for TV application. The inter-integrated circuit (IIC) which is normally called I2C (I squared C) developed by Philips on 80s as a data exchange bus used to transfer data between the central processing unit (CPU) or microcontroller unit (MCU) of a device and peripheral chips.