imxrt1170 SD运行问题

[jingyangxie]

我有一块1170的开发板，在调试模式下，USB检测程序运行正常(程序运行RT-Thread系统），U盘插入能自动挂载，但将程序烧录到SD卡（启动设备）再启动，系统直接宕机，串口无反应，请问1170使用SD卡作为启动设备有什么限制吗

[jeremyzhou]

Hi @jingyangxie ,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
从你的表述来看，你是说RT1170从SD card启动失败，是这样吗？
如果是，我想知道你的测试平台和测试步骤，同时如果你手上有MIMXRT1170 EVK开发板的话，能否复现上述现象。
Have a great day,
TIC

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[jingyangxie]

我用的就是MIMXRT1170 EVK开发板，整个测试是这样的，我用的是RT-Thread的BSP：

https://github.com/RT-Thread/rt-thread/tree/master/bsp/imxrt/imxrt1170-nxp-evk/m7

在调试模式下，配置USB支持是可以的，但程序烧录到SD卡中，串口除了显示RT-thread版本号后，无法操作，也不显示其它内容（正常情况下会显示main函数的信息）

[jeremyzhou]

Hi @jingyangxie ,
谢谢回复。
你的意思是说工程代码在RAM中调试时，运行都是正常的，但是同样的代码从SD卡启动并拷贝到RAM中运行，就有问题，是这样吗？在测试其他工程代码，比如NXP SDK中的代码时有出现这种现象吗？
Have a great day,
TIC

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[jingyangxie]

是的，在RAM中调试是正常的，通过BootUtility烧录SD卡，同样的代码从SD卡启动并拷贝到RAM中运行，就有问题，目前NXP SDK的代码我测试的比较小，比如hello world或者led, 测试USB fatfs demo，因为开发板没有USB A口，所以没法测试U盘插入动作，此时，串口就只显示一个 host init done.此时串口无法输入，也没有输出，无法判断程序是否运行正常

[jeremyzhou]

Hi @jingyangxie ,
谢谢回复。
我有个疑问，你前面说在RAM中调试是正常的，但是后面你有提到开发板没有USB A口，所以我不清楚’调试正常‘是个什么样的情况？
还有测试非USB工程代码，都是可以从SD卡正常启动运行吗？
Have a great day,
TIC

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[jingyangxie]

抱歉，我没表述清楚，调试OK的是我自己的板卡，和开发板一样，只是把otg换成了标准usb口，另外，SDK里面的其它demo，我试了有四五个，下载到SD卡均可以正常运行，当然，我自己的板卡也运行正常；但只要加载USB，我的板卡和开发板下载到SD卡中，都不能正常运行(程序用的依然是RTT）

[jeremyzhou]

Hi，
谢谢回复。
从你测试来说，就是host_msd_fatfs_freertos可以从SD启动，并在RAM中运行，但是RTOS变成RT-thread就不正常工作了，那么我想问一下代码是否在相同RAM块中运行呢？
Have a great day,
TIC

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[jingyangxie]

链接文件是一样的，可以看https://community.nxp.com/t5/i-MX-RT/imxrt-1170-usb-problem/m-p/1546130#M22276，我对问题的范围缩小了，就是代码中一旦对ehciInstance->ehciIpBase->PORTSC1这个寄存器赋值，不管是什么，系统就挂起了，感觉这个寄存器是只读的了，但调试模式又没事，很费解

[jeremyzhou]

Hi，
谢谢回复。
测试host_msd_fatfs_freertos能复现问题吗？
Have a great day,
TIC

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[jingyangxie]

没有复现，这个demo是OK的，所以很奇怪，这个demo用的是FreeRTOS，而我用的是RTT，问题是卡住的地方在USB_HOSTInit里面，USB还没开始用呢

[jingyangxie · Accepted solution]

问题就出在USB初始化的时候，时钟配置不对，原代码为

    usb_phy_config_struct_t phyConfig = {

        BOARD_USB_PHY_D_CAL, BOARD_USB_PHY_TXCAL45DP,   BOARD_USB_PHY_TXCAL45DM,

    };

    if (controller_id == kUSB_ControllerEhci0)

    {

        CLOCK_EnableUsbhs0PhyPllClock(kCLOCK_Usbphy480M, 480000000U);

        CLOCK_EnableUsbhs0Clock(kCLOCK_Usb480M, 480000000U);

    }

    else

    {

        CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, 480000000U);

        CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, 480000000U);

    }

    USB_EhciPhyInit(controller_id, 24000000U, &phyConfig);

修改为：

    uint32_t usbClockFreq;

    usb_phy_config_struct_t phyConfig = {

        BOARD_USB_PHY_D_CAL, BOARD_USB_PHY_TXCAL45DP, BOARD_USB_PHY_TXCAL45DM,

    };

    usbClockFreq = 24000000;

    if (controller_id == kUSB_ControllerEhci0)

    {

        CLOCK_EnableUsbhs0PhyPllClock(kCLOCK_Usbphy480M, usbClockFreq);

        CLOCK_EnableUsbhs0Clock(kCLOCK_Usb480M, usbClockFreq);

    }

    else

    {

        CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, usbClockFreq);

        CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, usbClockFreq);

    }

    USB_EhciPhyInit(controller_id, 24000000U, &phyConfig);

下载进SD卡，正常运行

[jeremyzhou]

Hi，
我觉得你首先可以对比一下SDK中的USB代码和你的工程代码的区别，因为从你的测试结果看，硬件应该是没问题的。
Have a great day,
TIC

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[jingyangxie]

区别是有的，就是内存分配的方式，SDK用的是Freertos的heap_4.c中的分配内存的方法；而我的是用的rt-thread的rt_malloc函数分配内存

[jeremyzhou]

Hi，
谢谢回复。
有测试过SDK中的USB例程吗？可以正常工作吗？
Have a great day,
TIC

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[jingyangxie]

重新解压SDK包2.12版本，测试host_msd_fatfs_freertos，链接文件选择ram.icf，调试和下载到SD卡中，串口输出一致，能看到识别出U盘，并做了测试；
猜想：是否USB的代码需要放到合适的地方（在链接文件中指定或是有宏定义控制），我把相同的USB代码拷贝我我的工程中，自有宏定义不同，因为我用的是RT-thread，而不是freertos

[jingyangxie]

测过usb的host_msd_fatfs_freertos这个demo，虽然不会死机 ，但插入U盘没有任何反应（串口无输出），只在调试模式下进行了测试

[jingyangxie]

加入USB支持后，map文件会提示这个：

No sections matched the following patterns:

section CodeQuickAccess in block QACCESS_CODE
section DataQuickAccess in block QACCESS_DATA
section NonCacheable.init in block NCACHE_VAR
section m_usb_dma_init_data in block RW
section m_usb_dma_noninit_data in block ZI

不知道有影响没