I actually did this to be able to check the memory usage, but it's not very useful. I'm using Microsoft Visual Studio with VisualGDB for the development, and this gives me a tool which is called "Embedded Memory Explorer". It shows a very detailed memory usage for all variables and threads.
Here is the general memory usage overview:
and this is a detailed view of the memory usage:
This tool is very good and helped me a lot in detecting memory issues.
I finally found the problem and got everything working. The problem is that I connected the SD-Card to SDMMC1 which is in the D1 Domain. I had the AZRTOS system as static allocation and placed it in the address range of the D2 Domain. The SD driver cannot access anything in the D1 Domain under these conditions.
To solve the problem, I simply moved everything belonging to the AZRTOS to the D1 Domain.
This is my new memory assignment in the linker script:
MEMORY
{
ITCMRAM (xrw) : ORIGIN = 0x00000000, LENGTH = 64K
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K
DTCMRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K
ETH_DMA (xrw) : ORIGIN = 0x24000000, LENGTH = 1K
AZRTOS (xrw) : ORIGIN = 0x24000400, LENGTH = 236K
RAM_D1 (xrw) : ORIGIN = 0x2403B400, LENGTH = 275K
/* RAM_D1 (xrw) : ORIGIN = 0x24000000, LENGTH = 512K */
RAM_D2 (xrw) : ORIGIN = 0x30000000, LENGTH = 288K
RAM_D3 (xrw) : ORIGIN = 0x38000000, LENGTH = 64K
}
...
...
...
/* ########################################################### */
/* definitions for tcp Rx and Tx -DescripSection */
/* ########################################################### */
.tcp_sec 0x24000000 (NOLOAD) : {
/* ETH DMA Descriptor Rx - 512 Bytes */
. = ABSOLUTE(0x24000000);
*(.RxDescripSection)
/* ETH DMA Descriptor Tx - 512 Bytes */
. = ABSOLUTE(0x24000200);
*(.TxDescripSection)
} >ETH_DMA
/* ########################################################### */
/* definitions for AZURE RTOS - ThreadX, FileX, NetXDuo */
/* ########################################################### */
.azrtos_sec 0x24000400 (NOLOAD):
{
/* .TxPoolSection section - 10240 Bytes */
. = ABSOLUTE(0x24000400);
*(.TxPoolSection)
/* .FxPoolSection section - 10240 Bytes */
. = ABSOLUTE(0x24002C00);
*(.FxPoolSection)
/* .NxPoolSection section - 204800 Bytes */
. = ABSOLUTE(0x24005400);
*(.NxPoolSection)
/* HTTP-Server pool section - 8192 Bytes */
. = ABSOLUTE(0x24037400);
*(.Nx_HTTP_ServerPoolSection)
/* FTP-Server pool section - 8192 Bytes */
. = ABSOLUTE(0x24039400);
*(.Nx_FTP_ServerPoolSection)
} >AZRTOS
Here are the adjustments for the MPU settings in the "main.c":
#pragma region ***** MPU configuration *****
void MPU_Config(void)
{
MPU_Region_InitTypeDef MPU_InitStruct = { 0 };
/* Disables the MPU */
HAL_MPU_Disable();
/* Initializes and configures the Region and the memory to be protected */
/* default settings for the complete memory address range */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
MPU_InitStruct.BaseAddress = 0x0;
MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
MPU_InitStruct.SubRegionDisable = 0x87;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER1;
MPU_InitStruct.BaseAddress = 0x24000000;
MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
MPU_InitStruct.SubRegionDisable = 0x0;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER2;
MPU_InitStruct.Size = MPU_REGION_SIZE_1KB;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER3;
MPU_InitStruct.BaseAddress = 0x30000000;
MPU_InitStruct.Size = MPU_REGION_SIZE_128KB;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER4;
MPU_InitStruct.BaseAddress = 0x30002000;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER5;
MPU_InitStruct.BaseAddress = 0x30004000;
MPU_InitStruct.Size = MPU_REGION_SIZE_32KB;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER6;
MPU_InitStruct.BaseAddress = 0x38000000;
MPU_InitStruct.Size = MPU_REGION_SIZE_64KB;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Enables the MPU */
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}
#pragma endregion
Also, I placed a public repo on GitHub which a complete functional example for the STM32H7 with AZRTOS, HTTP-Server with content from SD-Card, and FTP-Server to update the SD-Card content. I tested FileZilla in passive mode with binary file transfer which works great.
GitHub repo for STM32H7-AZRTOS example
The memory has to be optimized because I used it very generous.
