Asynchronous Serial Communication and Configurable Verilog UART Design
RS232 and RS485 StandardsSerial communication serves as a foundational protocol for hardware interfaces. RS232 utilizes dedicated transmission (TX) and reception (RX) lines for full-duplex operation. Data transfer speed is defined by the baud rate (bits per second), with standard frequencies including 9600, 38400, and 115200 bps.RS485 offers di ...
Posted on Tue, 22 Sep 2026 16:43:42 +0000 by Stevis2002
RS485 Modbus RTU Communication Implementation with STM32
Protocol Overview
Modbus RTU is a widely adopted industrial serial communication standard that utilizes binary encoding for efficient data exchange. When paired with the RS485 physical layer, it creates a robust system ideal for noisy industrial environments, sensor networks, and PLC integrations.
RS485 employs differential signaling for noise ...
Posted on Sat, 22 Aug 2026 16:41:26 +0000 by abgoosht
Modbus Protocol Implementation on STM32F4 Microcontrollers
Modbus Communication Architecture
Modbus implementation requires distinct approaches for slave and master devices:
Slave Device Operation
Slave devices maintain constant recieve readiness. The RS485 transceiver remains in receive mode, storing incoming data in a buffer. When a complete message is detected, the packet is parsed and appropriate r ...
Posted on Fri, 07 Aug 2026 16:04:19 +0000 by Call-911