随机定义全局变量就导致lwip连接不上

ou513 · 发表于 2023-11-10 11:10:38

stm32h7平台，系统跑freertos ，网络部分是lwip，现在调试遇到一个问题，随机定义一些全局变量就导致lwip连不上。这个是不是对齐问题，关键是如何解决。

网络的mpu配置如下：

  /* Configure the MPU attributes as Device not cacheable
   for ETH DMA descriptors */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x30040000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_1KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /* Configure the MPU attributes as Cacheable write through
   for LwIP RAM heap which contains the Tx buffers */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x30044000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

随机定义变量大致如下，基本都是一样的定义方式

static const char *ch1_label_text[] = {"CH1", "通道1"};
static const char *ch2_label_text[] = {"CH2", "通道2"};
static const char *ch3_label_text[] = {"CH3", "通道3"};
static const char *ch4_label_text[] = {"CH4", "通道4"};

就只是网络连接不上，就是直接就ping不通了，系统其他功能都是正常远行的，这就奇怪了。
这些变量如果修改了内容也有可能连上的，基本上就是随机性的，修修改改或许能连或许不能连

eric2013 · 发表于 2023-11-10 11:16:09

主RAM空间用的什么

ou513 · 发表于 2023-11-10 11:20:48

本帖最后由 ou513 于 2023-11-10 11:22 编辑

eric2013 发表于 2023-11-10 11:16
主RAM空间用的什么

而且这些随机定义的变量都还没有用呢，
配置如下，是在0x24000000上。
QQ截图20231110111952.png

eric2013 · 发表于 2023-11-10 11:32:16

ou513 发表于 2023-11-10 11:20
而且这些随机定义的变量都还没有用呢，
配置如下，是在0x24000000上。

AXI SRAM空间的MPU配置贴下

ou513 · 发表于 2023-11-10 11:55:38

eric2013 发表于 2023-11-10 11:32
AXI SRAM空间的MPU配置贴下

  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER3;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  HAL_MPU_ConfigRegion(&MPU_InitStruct);

eric2013 · 发表于 2023-11-10 14:57:39

ou513 发表于 2023-11-10 11:55
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = 0x24000000;
MPU_In ...

配置为最低性能模式试试。

使用STM32H7的AXI SRAM，SRAM1到SRAM4对应的Cache最高性能和最低性能配置
https://www.armbbs.cn/forum.php?mod=viewthread&tid=99322

ou513 · 发表于 2023-11-10 16:14:17

eric2013 发表于 2023-11-10 14:57
配置为最低性能模式试试。

使用STM32H7的AXI SRAM，SRAM1到SRAM4对应的Cache最高性能和最低性能配置

尝试了用最低性能模式，直接就是整个系统启动不起来。安装现有配置或最高性能配置系统可以正常远行，但就是ping不上网络。
跟mpu这个两个参数有关系吗，是不是需要调试这个两个参数。

  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;

全部的MPU配置如下，

  /* Configure the MPU attributes as Device not cacheable
   for ETH DMA descriptors */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x30040000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_1KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /* Configure the MPU attributes as Cacheable write through
   for LwIP RAM heap which contains the Tx buffers */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x30044000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /* Configure the MPU attributes as Device not cacheable
for SDRAM  descriptors */

  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0XD0000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_32MB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  // MPU_InitStruct.IsBufferable    = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER2;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER3;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = (uint32_t)uart4_rx;
  MPU_InitStruct.Size = MPU_REGION_SIZE_2KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER4;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  MPU_InitStruct.Enable          = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress    = 0x60000000;
  MPU_InitStruct.Size          = ARM_MPU_REGION_SIZE_64KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable    = MPU_ACCESS_BUFFERABLE;
  MPU_InitStruct.IsCacheable    = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable    = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number          = MPU_REGION_NUMBER5;
  MPU_InitStruct.TypeExtField    = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec    = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  MPU_InitStruct.Enable          = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress    = 0x38000000;
  MPU_InitStruct.Size          = MPU_REGION_SIZE_64KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable    = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable    = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable    = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.Number          = MPU_REGION_NUMBER6;
  MPU_InitStruct.TypeExtField    = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec    = MPU_INSTRUCTION_ACCESS_ENABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

eric2013 · 发表于 2023-11-11 08:55:02

ou513 发表于 2023-11-10 16:14
尝试了用最低性能模式，直接就是整个系统启动不起来。安装现有配置或最高性能配置系统可以正常远行，但就 ...

这块没什么问题，剩下就是你的lwip网络接口文件里面的cache处理了，你那个接口文件代码用的是ST的最新版的吧，他们早期版本的有bug。

ou513 · 发表于 2023-11-13 07:57:47

eric2013 发表于 2023-11-11 08:55
这块没什么问题，剩下就是你的lwip网络接口文件里面的cache处理了，你那个接口文件代码用的是ST的最新版 ...

周末有事回了一趟老家，没调试。今天再调试看看，暂时找不到调试的思路，都不知道从哪个地方去找问题。
LWIP用的是STM32CubeMX生成的，ST库用的是stm32cube_fw_h7_v1100。

碉堡 · 发表于 2023-11-13 10:47:21

对比两个工程的map文件的变量地址有什么区别

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