Function uart_sample_v1

bsp/hc32/tests/test_uart_v1.c:160–277

}

int uart_sample_v1(int argc, char *argv[])
{
    rt_thread_t thread;
    rt_err_t ret = RT_EOK;
    rt_size_t n;
    rt_err_t open_flag = 0UL;
    static char uart_name[RT_NAME_MAX];
    static char comm_mode[RT_NAME_MAX];
    const static char comm_mode_int[] = "int";
    const static char comm_mode_dma[] = "dma";
    const static char comm_info_dma[] = "\r\n drv_version: drv_usart_v1 \r\n communication: using DMA \r\n uart_ch: ";
    const static char comm_info_int[] = "\r\n drv_version: drv_usart_v1 \r\n communication: using interrupt \r\n uart_ch: ";
    static char comm_info[150];

    rt_memset(uart_name, 0, sizeof(uart_name));
    rt_memset(comm_mode, 0, sizeof(comm_mode));

    if (argc == 1)
    {
        rt_strncpy(uart_name, SAMPLE_DEFAULT_UART_NAME, RT_NAME_MAX);
        rt_strncpy(comm_mode, comm_mode_int, sizeof(comm_mode_int));
    }
    else if (argc == 2)
    {
        rt_strncpy(uart_name, argv[1], RT_NAME_MAX);
        rt_strncpy(comm_mode, comm_mode_int, sizeof(comm_mode_int));
    }
    else if (argc == 3)
    {
        rt_strncpy(uart_name, argv[1], RT_NAME_MAX);
        rt_strncpy(comm_mode, argv[2], RT_NAME_MAX);
    }
    else
    {
        rt_kprintf("argc error!\n");
        return -RT_ERROR;
    }

    /* 查找系统中的串口设备 */
    serial = rt_device_find(uart_name);
    if (!serial)
    {
        rt_kprintf("find %s failed!\n", uart_name);
        return -RT_ERROR;
    }

    /* modify configure */
    config.baud_rate = BAUD_RATE_115200;      //baudrate 115200
    config.data_bits = DATA_BITS_8;           //data bit 8
    config.stop_bits = STOP_BITS_1;           //stop bit 1
    config.parity    = PARITY_NONE;
    rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config);

    if (0 == rt_strncmp(comm_mode, comm_mode_dma, 3))
    {
        static char msg_pool[256U];
        /* 初始化消息队列 */
        rt_mq_init(&rx_mq, "rx_mq",