bspUart Configuration

Overview

The UART configuration defines the hardware parameters for the on-board ST-LINK Virtual COM Port of the NUCLEO-G474RE. A single UART instance (TERMINAL) is configured for debug logging and interactive console use.

UartConfig.h declares the Uart::Id enumeration of available UART instances, and UartConfig.cpp maps each Uart::Id to its hardware parameters and provides the singleton accessor bsp::Uart::getInstance(Uart::Id).

Configuration

Parameter	Value
Peripheral	USART2 (APB1)
TX pin	PA2, alternate function AF7
RX pin	PA3, alternate function AF7
Baud rate	115 200 baud
BRR	170 000 000 / 115 200 = 1475.69 -> 1476

The resulting actual baud rate is 170 MHz / 1476 = 115 176 baud (0.021 % error), well within the UART tolerance.

Note

The UART driver uses polling mode (no DMA, no interrupts). For high- throughput or latency-sensitive applications, consider extending the bspUart BSP module with an interrupt-driven or DMA-backed backend.