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IWR6843AOPEVM: 数据串口波特率

hua lin
Prodigy 20 points
Part Number: IWR6843AOPEVM


固件：C:\ti\mmwave_industrial_toolbox_4_11_0\labs\Vital_Signs\Vital_Signs_With_People_Tracking\prebuilt_binaries\vital_signs_tracking_68xx_demo.bin

设备: IWR6843AOPEVM 单个

固件烧入后设备后，运行Vital_Signs_GUI.exe，是可以得到正确的数据。

但想自己写串口数据进行解释，却不知它的波特率是多少？

串口读出的数据与文档的协议不一样。

  • +1
    TI__Guru** 110395 points

    请参考以下文档9 UART and Output to the Host：

    The UART is configured at 921600 bps in DMA mode.

    mmwave_industrial_toolbox_4_11_0/labs/People_Counting/docs/3D_people_counting_demo_implementation_guide.pdf

  • 0 回复 Nancy Wang
    Prodigy 20 points

    我用baud rate:921600

    data bits:8

    stop bits :1

    parity :none

    flow control :none

    却无法读到正确的数据头： 01 02 03 04 05  06 07 08

    上面的配置是否有问题

  • 0 回复 hua lin
    Prodigy 20 points

    串口若是按16进制读是乱码；

    按字符却是乱码

  • 0 回复 hua lin
    Prodigy 20 points

    不好意思说错了：

    串口若是按16进制读是没有01 02 03 04 05 06 07 08

    按字符却是乱码

  • 0 回复 hua lin
    Prodigy 20 points

    大端，小端不说明白呢，是02 01 04 03 06 06 08 07

  • +1 回复 hua lin
    TI__Guru** 110395 points

    是否有参考参考过 mmwave_industrial_toolbox_4_11_0\labs\People_Counting\3D_People_Counting\src\68xx\mss\mss_mian.c的配置：

     /* Open the UART Instance */
    gMmwMssMCB.commandUartHandle = UART_open(0, &uartParams);
    if (gMmwMssMCB.commandUartHandle == NULL)
    {
        Pcount3DDemo_debugAssert (0);
        return;
    }

    /* Setup the default UART Parameters */
    UART_Params_init(&uartParams);
    uartParams.writeDataMode = UART_DATA_BINARY;
    uartParams.readDataMode = UART_DATA_BINARY;
    uartParams.clockFrequency = gMmwMssMCB.cfg.platformCfg.sysClockFrequency;
    uartParams.baudRate       = gMmwMssMCB.cfg.platformCfg.loggingBaudRate;
    uartParams.isPinMuxDone   = 1U;

    uartParams.dmaHandle      = dmaHandle;
    uartParams.txDMAChannel   = UART_DMA_TX_CHANNEL;  
    uartParams.rxDMAChannel   = UART_DMA_RX_CHANNEL;  

    /* Open the Logging UART Instance: */
    gMmwMssMCB.loggingUartHandle = UART_open(1, &uartParams);
    if (gMmwMssMCB.loggingUartHandle == NULL)
    {
        System_printf("Error: Unable to open the Logging UART Instance\n");
        Pcount3DDemo_debugAssert (0);
        return;
    }

    hua lin 说：
    串口若是按16进制读是没有01 02 03 04 05 06 07 08

    UART_DATA_BINARY 模式下会缺失syncPattern部分的内容，其它部分都能正常读出吗？