Introduction SPI, short for Serial Peripheral Interface, is a high-speed interface technology that supports full-duplex synchronous communication. The communication rate can reach several megabits to tens of megabits. 1. Four-Wire SPI The commonly used SPI typically consists of four lines: SDO/MOSI: Master device data output, slave device data input, such as when the master reads … Read more
1. What Is Communication To understand RS485 communication, we first need to clarify what communication is. In fact, communication is the transmission of 0 and 1 codes between two devices, where 0 represents low level and 1 represents high level. If device A transmits data to device B, then device A and device B must … Read more
We see that this touchscreen serial interface has RS485 as well as RS232. Here, we will briefly explain and distinguish between the serial interfaces RS485/RS232/RS422. RS232:Is a three-wire communication (1 transmitting wire, 1 receiving wire, and 1 common wire which is the reference ground GND). RS422:Is a four-wire communication (1 for transmitting +, 1 for … Read more