https://blog.csdn.net/qq_35181236/article/details/132789258

使用 uart9

配置

打印

void hal_entry(void)
{
    /* TODO: add your own code here */
    fsp_err_t err;
    uint8_t c;

    /* 配置串口 */
    err = g_uart9.p_api->open(g_uart9.p_ctrl, g_uart9.p_cfg);
    while (1)
    {
        g_uart9.p_api->write(g_uart9.p_ctrl, "uart9 send test\r\n", 8);
        for (size_t i = 0; i < 3*1000*1000; i++)
        {
            ;
        }
    }
}