STM32H7使用emWin的存储设备方式操作图片注意事项

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棋王高手|

楼主 | 2018-8-4 18:12 | 只看该作者回帖奖励

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存储设备, STM32H7, emWin, MPU, struct

1、SDRAM作为emWin的显存和动态内存，要配置为WT模式

      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_NUMBER2;
      MPU_InitStruct.TypeExtField    = MPU_TEX_LEVEL0;
      MPU_InitStruct.SubRegionDisable = 0x00;
      MPU_InitStruct.DisableExec    = MPU_INSTRUCTION_ACCESS_ENABLE;
      HAL_MPU_ConfigRegion(&MPU_InitStruct);

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