Nucleo-F103RB
- 클럭: 64MHz
- 사용 핀
- PB10: UART3 / TX
- PB11: UART3 / RX
main() -> while 전 USER CODE
MX_USART3_UART_Init();
while문
HAL_UART_Receive(&huart3, &data_sign, sizeof(data_sign), 1000);
HAL_UART_Transmit(&huart2, "hello", sizeof("hello"), 1000);
HAL_UART_Transmit(&huart2, data_sign, sizeof(data_sign), 1000);