完善industry_io_gateway的mpu配置

Author: loogg

projects/industry_io_gateway/board/drv_mpu.c

@@ -52,16 +52,16 @@ int mpu_init(void)
 
 #ifdef BSP_USING_ETH
     /* Configure the MPU attributes as Device not cacheable 
-       for ETH DMA descriptors */
+       for ETH DMA descriptors and RX Buffers*/
     MPU_InitStruct.Enable = MPU_REGION_ENABLE;
     MPU_InitStruct.BaseAddress = 0x30040000;
-    MPU_InitStruct.Size = MPU_REGION_SIZE_256B;
+    MPU_InitStruct.Size = MPU_REGION_SIZE_32KB;
     MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
-    MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
+    MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
     MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
-    MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
+    MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
     MPU_InitStruct.Number = MPU_REGION_NUMBER2;
-    MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
+    MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
     MPU_InitStruct.SubRegionDisable = 0x00;
     MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;