send data to a register using wire library

All I/O pins of TCA9548A are 5-volt tolerant and can also be used to translate from high to low or low to high voltages. The multiplexer supports both normal (100 kHz) and fast (400 kHz) I2C protocols. Both input SDA and SCL lines are connected to VCC through a 10K pull-up resistor (The size of the pull-up resistor is determined by the amount of capacitance on the I2C lines). The breakout board accepts VIN from 1.65v to 5.5v. The Multiplexer connects to VIN, GND, SDA and SCL lines of the micro-controller. For example, if eight identical OLED displays are needed in an application, one of each display can be connected at each of these channels: 0-7. You just need to wire up the I2C sensors to the SCn / SDn multiplexed buses. TCA9548A is an eight-channel (bidirectional) I2C multiplexer which allows eight separate I2C devices to be controlled by a single host I2C bus. The Master generates the clock and initiates communication with slaves. The clock signal is always controlled by the master. The output of bits is synchronized to the sampling of bits by a clock signal 'shared' between the master and the slave. I2C is a 'short distance' 'serial communication protocol', so data is transferred 'bit-by-bit' along the single wire or the SDA line. * Slave receive – slave node is receiving data from the master * Slave transmit – slave node is sending data to the master * Master transmit – master node is sending data to a slave * Master receive – master node is receiving data from a slave So, a device on I2C bus can be in one of these four states: Both masters and slaves can transmit and receive data. With I2C, you can connect multiple slaves to a single master (like SPI) or you can have multiple masters controlling single, or multiple slaves. The I2C bus technology was originally designed by Philips Semiconductors in the early ’80s to allow easy communication between components which reside on the same circuit board. Remember, both these lines are 'synchronous' 'bidirectional' 'open-drain' and are 'pulled-up with resistors'. Inter-integrated Circuit pronounced I-squared-C (I☬) or I2C is a two wire bus technology (well actually 4 wires because you also need the VCC and Ground) that is used for communication between multiple processors and sensors.

Send data to a register using wire library