STM32H743 以太网驱动问题

发布于 2020-09-14 20:15:52 浏览：4578 订阅该版

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我心永恒~ 2020-09-15

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whj467467222 2020-09-18

开源，分享，交流，共同进步

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fovery 2020-09-22

Simple yet extraordinary

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fovery 2020-09-24

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Mestic英 2020-11-23

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多谢大佬的驱动，白嫖党感激不尽，嫖完后，还增加修改了两个地方：
1、board.c增加MPU的配置
```
void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct;

/* Disable the MPU */
  HAL_MPU_Disable();

/* 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 Normal Non Cacheable
     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_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
  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);
}
```
2、修改drv_common.c
```
void hw_board_init(char *clock_src, int32_t clock_src_freq, int32_t clock_target_freq)
{
    extern void rt_hw_systick_init(void);
    extern void clk_init(char *clk_source, int source_freq, int target_freq);

#ifdef SCB_EnableICache
    /* Enable I-Cache---------------------------------------------------------*/
    SCB_EnableICache();
#endif

#ifdef SCB_EnableDCache
    /* Enable D-Cache---------------------------------------------------------*/
    SCB_EnableDCache();
#endif
    extern void MPU_Config(void);
    extern void CPU_CACHE_Enable(void);
    SCB->VTOR = QSPI_BASE;
    MPU_Config();    // 增加MPU配置函数
    CPU_CACHE_Enable();
    /* HAL_Init() function is called at the beginning of the program */
    HAL_Init();

```
3、修改link.lds编译连接脚本（让DMARxDscrTab、DMATxDscrTab、Rx_Buff连接到指定内存地址上）
```
MEMORY
{
ROM (rx) : ORIGIN =0x90000000,LENGTH =512k
RAM (rw) : ORIGIN =0x24000000,LENGTH =512k
RAM_D2_SRAM3 (xrw) : ORIGIN = 0x30040000, LENGTH = 32K    /* 增加MEMORY */
}
```
```
    .bss :
    {
        . = ALIGN(4);
        /* This is used by the startup in order to initialize the .bss secion */
        _sbss = .;

*(.bss)
        *(.bss.*)
        *(COMMON)

. = ALIGN(4);
        /* This is used by the startup in order to initialize the .bss secion */
        _ebss = . ;
        
        *(.bss.init)
    } > RAM
    __bss_end = .;
    _end = .;
    /* 增加连接脚本 */
    .lwip_sec (NOLOAD) : 
    {
        . = ALIGN(4);
        *(.RxDecripSection) 
        *(.TxDecripSection)
        *(.RxArraySection) 
        . = ALIGN(4);
    } > RAM_D2_SRAM3

/* Stabs debugging sections.  */
    .stab          0 : { *(.stab) }
    .stabstr       0 : { *(.stabstr) }
```

附上参考工程
https://github.com/MysticChan/rtt_stm32h7_eth.git