The MCU sends the monitoring packet, messages consist of header, order, data contents, direction, CRC (cyclic redundancy check), and the end of frame observing the designed data transmission protocol, via USART
at PA9 (TX) to ESP8266, the Wi-Fi module, according to an established period (1 second by default) which can be set on the website.
The operation of UART is controlled by the USART
control, status registers (UxCSR), and the UART control registers (UxUCR), where x can be 0 or 1.
EC459 additionally features a flexible control interface that is customizable between SPI, I2C, UART and USART
The AT89S52 includes four programmable ports, two external interrupt sources, three timers or counters, one programmable serial USART
, 8 kB of program memory, and 256 B of RAM for data.
Universal Synchronous/Asynchronous Receiver/ Transmitter (USArT
) communications were chosen for communication between subsystems, which have their own MCU because it is robust and supported by the majority of microcontrollers.
They also feature standard and advanced communication interfaces, such as I2C, SPI, USART
, UART, USB, CAN, SDIO/MMC, and Ethernet.
This study used a universal asynchronous receiver/transmitter (USART
) in the PIC18F8720 single chip microcontroller to transmit data and control operation of a ZigBee module.
An in-situ component immunity test bench  is introduced in this paper; it receives the output data by USART
which is a normal module inside the microcontroller.
Solaiman, CEO of USARTC, Alia Karmeh, Vice President of USARTC and Dawn Warner, National Sales Director at USART
, and Kim Childs