S32 Design Studio中的主题回复： MCAL Data Mapping fails

MCAL Data Mapping fails

liyongfeng — Mon, 22 Dec 2025 09:51:07 GMT

#define MCU_START_SEC_VAR_INIT_UNSPECIFIED

#include "Mcu_MemMap.h"

Mcu_StatusType Mcu_eStatus = MCU_UNINIT;

#define MCU_STOP_SEC_VAR_INIT_UNSPECIFIED

#include "Mcu_MemMap.h"

After bulid, the data fails to map to the .macl_data section：

.mcal_data.Mcu_eStatus
0x204201dd 0x1 load address 0x0040eb0d

Mapping to the .macl_data section is only achievable when __attribute__((section(".mcal_data"))) is used.

The content of the ld file is as follows:

.sram_data : AT(__sram_data_rom)

{

. = ALIGN(4);

__sram_data_begin__ = .;

. = ALIGN(4);

*(.ramcode)

. = ALIGN(4);

*(.data)

*(.data*)

. = ALIGN(4);

*(.mcal_data)

. = ALIGN(4);

__sram_data_end__ = .;

} > int_sram_c0

I can map correctly using *(.mcal_data*); is this method suitable?

Re: MCAL Data Mapping fails

lukaszadrapa — Wed, 31 Dec 2025 13:53:45 GMT

Hi @liyongfeng

Which RTD is used? I can't see such issue on my side, MCU_START_SEC_VAR_INIT_UNSPECIFIED is working for me. Did you get any warnings when building the project?

Regards,

Lukas

回复： MCAL Data Mapping fails

liyongfeng — Mon, 05 Jan 2026 02:31:02 GMT

Could you help me figure out where the problem is?

RTD : SW32K3_S32M27x_RTD_R21-11_6.0.0_QLP04

回复： MCAL Data Mapping fails

lukaszadrapa — Mon, 05 Jan 2026 15:45:57 GMT

Could you try following?

Add this to main.c or any other c file:

#define MCU_START_SEC_VAR_INIT_UNSPECIFIED
 
#include "Mcu_MemMap.h"
 
Mcu_StatusType Mcu_eStatus = MCU_UNINIT;
 
#define MCU_STOP_SEC_VAR_INIT_UNSPECIFIED
 
#include "Mcu_MemMap.h"
 
Then do a right click in this *.c file and select "Preprocess Selected File(s)".
 
You should get something like this for the definition above:
 
 
#define MCU_START_SEC_VAR_INIT_UNSPECIFIED
 
# 1 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h" 1
# 57 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#define MCU_MEMMAP_VENDOR_ID 43
#define MCU_MEMMAP_AR_RELEASE_MAJOR_VERSION 4
#define MCU_MEMMAP_AR_RELEASE_MINOR_VERSION 7
#define MCU_MEMMAP_AR_RELEASE_REVISION_VERSION 0
#define MCU_MEMMAP_SW_MAJOR_VERSION 6
#define MCU_MEMMAP_SW_MINOR_VERSION 0
#define MCU_MEMMAP_SW_PATCH_VERSION 0
# 81 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#define MEMMAP_ERROR
# 7329 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#undef MCU_START_SEC_VAR_INIT_UNSPECIFIED
#define ENTERED_MCU_START_SEC_VAR_INIT_UNSPECIFIED
 
#define MEMMAP_MATCH_ERROR
# 7341 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#undef MEMMAP_ERROR
#pragma GCC section data ".mcal_data"
#pragma GCC section bss ".mcal_bss"
# 42 "..\\src\\main.c" 2
 
Mcu_StatusType Mcu_eStatus = MCU_UNINIT;
 
#define MCU_STOP_SEC_VAR_INIT_UNSPECIFIED
 
# 1 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h" 1
# 57 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#define MCU_MEMMAP_VENDOR_ID 43
#define MCU_MEMMAP_AR_RELEASE_MAJOR_VERSION 4
#define MCU_MEMMAP_AR_RELEASE_MINOR_VERSION 7
#define MCU_MEMMAP_AR_RELEASE_REVISION_VERSION 0
#define MCU_MEMMAP_SW_MAJOR_VERSION 6
#define MCU_MEMMAP_SW_MINOR_VERSION 0
#define MCU_MEMMAP_SW_PATCH_VERSION 0
# 81 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#define MEMMAP_ERROR
# 7351 "c:\\nxp\\s32ds.3.6.2\\s32ds\\software\\platformsdk_s32k3\\rtd\\basenxp_ts_t40d34m60i0r0\\include\\mcu_memmap.h"
#undef ENTERED_MCU_START_SEC_VAR_INIT_UNSPECIFIED
 
 
 
 
#undef MEMMAP_MATCH_ERROR
 
#undef MCU_STOP_SEC_VAR_INIT_UNSPECIFIED
 
 
Please send me this output.
 
 

回复： MCAL Data Mapping fails

liyongfeng — Tue, 06 Jan 2026 01:22:45 GMT

Hi @lukaszadrapa ，

This is the information generated by using the variable Test_Mcu_eStatus in my main.c file.

回复： MCAL Data Mapping fails

liyongfeng — Tue, 06 Jan 2026 02:42:32 GMT

Understood. The (-fdata-sections) option is enabled by default when a new project is created in D32DS. Alternatively, this may be attributed to my lack of knowledge regarding compiler commands.

S32 Design Studio中的主题 回复： MCAL Data Mapping fails

MCAL Data Mapping fails

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S32 Design Studio中的主题回复： MCAL Data Mapping fails