【RTThread】修改Finsh打印串口波特率

/* 串口设备句柄 */
    static rt_device_t uart_device = RT_NULL;
    /* 查找系统中的串口设备 */
    uart_device = rt_device_find("uart1"); // 这里
    /* 串口配置结构体，使用serial.h的宏定义 */
    struct serial_configure finsh_serial_config = RT_SERIAL_CONFIG_DEFAULT;
    /* 先打开串口设备，才能修改 */
    if (rt_device_open(uart_device, RT_DEVICE_OFLAG_RDWR | RT_DEVICE_FLAG_INT_RX ) != RT_EOK)
    {
        rt_kprintf("uart open error.\n");
    }
    /* 修改串口配置参数 */
    finsh_serial_config.baud_rate = BAUD_RATE_460800;
    if (RT_EOK != rt_device_control(uart_device, RT_DEVICE_CTRL_CONFIG,(void *)&finsh_serial_config))
    {
        rt_kprintf("uart config baud rate failed.\n");
    }