stm32h743+dm9162 ping不通

发布于 2021-06-18 19:51:58 浏览：1922 订阅该版

说明：

开发板：安富莱h7开发板, 芯片stm32h743xih7
开发工具：win10系统，ip固定为192.168.1.31; IDE为rt-thread studio 2.0

项目配置：
* 按芯片型号添加RT-Thread v4.02项目；
* board.h取消eth部分相应注释，启动dm9161驱动；
* stm32h7xx_hal_conf中取消HAL_ETH_MODULE_ENABLED注释；
* board.c中添加eth_msp初始化及phy_reset函数；
* rt-thread设置添加LWIP，取消DHCP，固定ip为192.168.1.30

其他：默认drvers下面的drv_eth驱动报错，从art-pi的sdk中拷贝drv_eth.c及drv_eth.h。

修改phy_reset部分,reset是开发板复位键所以是空的；
drv_mpu.c
```c
int mpu_init(void)
{
    MPU_Region_InitTypeDef MPU_InitStruct;
    /* Disable the MPU */
    HAL_MPU_Disable();
//
//    /* Configure the MPU attributes as WT for AXI SRAM */
//    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_NOT_CACHEABLE;
//    MPU_InitStruct.IsShareable       = MPU_ACCESS_NOT_SHAREABLE;
//    MPU_InitStruct.Number            = MPU_REGION_NUMBER0;
//    MPU_InitStruct.TypeExtField      = MPU_TEX_LEVEL1;
//    MPU_InitStruct.SubRegionDisable  = 0X00;
//    MPU_InitStruct.DisableExec       = MPU_INSTRUCTION_ACCESS_ENABLE;
//
//    HAL_MPU_ConfigRegion(&MPU_InitStruct);
//
//#ifdef BSP_USING_SDRAM
//    /* Configure the MPU attributes as WT for SDRAM */
//    MPU_InitStruct.Enable            = MPU_REGION_ENABLE;
//    MPU_InitStruct.BaseAddress       = 0xC0000000;
//    MPU_InitStruct.Size              = MPU_REGION_SIZE_32MB;
//    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);
//#endif
//
//#ifdef BSP_USING_ETH
//    /* 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_256B;
//    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_NUMBER2;
//    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_NUMBER3;
//    MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
//    MPU_InitStruct.SubRegionDisable = 0x00;
//    MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
//
//    HAL_MPU_ConfigRegion(&MPU_InitStruct);
//#endif

/* 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_256B;
    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);

/* 配置AXI SRAM的MPU属性为Write through, read allocate，no write allocate */
    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_NUMBER0;
    MPU_InitStruct.TypeExtField     = MPU_TEX_LEVEL0;
    MPU_InitStruct.SubRegionDisable = 0x00;
    MPU_InitStruct.DisableExec      = MPU_INSTRUCTION_ACCESS_ENABLE;

HAL_MPU_ConfigRegion(&MPU_InitStruct);

/* Enable the MPU */
    HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);

/* Enable CACHE */
    SCB_EnableICache();
    SCB_EnableDCache();

return RT_EOK;

}
INIT_BOARD_EXPORT(mpu_init);
```
link文件
![微信截图_20210618195006.png](https://oss-club.rt-thread.org/uploads/20210618/c24c94d259e39f39995ffd0021826b3c.png)
结果：
![微信截图_20210618194431.png](https://oss-club.rt-thread.org/uploads/20210618/845144a53e8e187edc94974e6e6ae21f.png)