ModbusMaster.h - Arduino library for communicating with Modbus slaves over RS232/485 (via RTU protocol). This file is part of ModbusMaster. ModbusMaster is free software: you can redistribute it and/or modify it under the terms o

Also the USART automatically senses the start of transmission of RX line and then inputs the whole byte and when it has the byte it informs you(CPU) to read that data from one of its registers. The USART of AVR is very versatile and can be setup