BXConverter
- Project BxConverter
- Technologies IsixRTOS, STM32 Languages: C++11, C
- Languages C++11, C
The challenge
Integrating multiple serial communication standards such as USB, RS232, and RS485 within a single system often requires multiple converters or complex custom setups. These solutions can be costly, bulky, and unreliable in scenarios where simultaneous communication or seamless data routing is needed. Developers face additional challenges related to synchronizing transmission, managing interface conflicts, and ensuring stable performance in industrial or embedded environments.
The solution
BxKonwerter is an all-in-one serial communication converter designed to operate simultaneously across USB, RS232, and RS485 interfaces. At the heart of the device is the STM32F103 ARM microcontroller, which intelligently manages data flow between the interfaces. It employs a proprietary algorithm that prioritizes incoming data based on the sequence of arrival. If multiple interfaces transmit data concurrently, the converter buffers up to 512 bytes per interface, ensuring no data is lost. Once transmission pauses (longer than the time required to send 4 bytes), buffered data is dispatched to the other interfaces in the original order of reception.
The device also offers flexibility by supporting a standalone RS232/RS485 mode without USB, powered by an external 4Vā12V source. Communication parameters such as baud rate and parity are configured via the USB virtual COM port and stored in non-volatile internal memory, making deployment fast and repeatable. The USB interface is fully compatible with Windows and identified as a standard virtual COM port, requiring no custom drivers.
The result
The BxKonwerter enables seamless, real-time communication across three serial protocols, significantly reducing integration complexity. It ensures stable, lossless data transfer even in demanding multi-interface environments. Compact (68Ć45Ć24 mm) and enclosed in a durable black ABS housing, the converter is easy to install, including wall-mount options. Dual LED indicators on the case provide instant feedback on power status, transmission activity, and USB/buffer events. RS232/RS485 connections are made via a terminal block, and USB via a side-mounted port.
Whether used in embedded systems, automation setups, or diagnostics, BxKonwerter simplifies serial communication and provides a robust, configurable, and professional-grade solution ready for both development and deployment.
