[MCU開發]解決S32K編譯時發生VMA error

 Description Resource Path Location Type Ld error: section .stack VMA [20002c00,20002fff] overlaps section .heap VMA Meter_AS_MCU C/C++ Problem

"c:/nxp/s32ds_arm_v2.2/s32ds/build_tools/gcc_v6.3/gcc-6.3-arm32-eabi/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/real-ld.exe: section .stack VMA [20002d00,20002fff] overlaps section .heap VMA [20002a58,20002d57]"

這問題描述主要說的是./stack跟heap去重疊到

導致編譯錯誤

解法如下 : 

開啟S32 Design Studio 開啟專案的Project Settings->Linker files

點選S32K1xx_32_ram.ld

HEAP_SIZE  = DEFINED(__heap_size__)  ? __heap_size__  : 0x00000400;

STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x00000400;

並在以下資料夾入前綴 : __attribute__ ((section(".data"))) 如下 : 

 __attribute__ ((section(".data")))m_interrupts          (RX)  : ORIGIN = 0x1FFFC000, LENGTH = 0x00000400

  __attribute__ ((section(".data")))m_text                (RX)  : ORIGIN = 0x1FFFC400, LENGTH = 0x00003C00

  /* SRAM_U */

  __attribute__ ((section(".data")))m_data                (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00003000

接著在S32K1xx_32_flash.ld

動態調整heap size跟stack size 如下 : 

HEAP_SIZE  = DEFINED(__heap_size__)  ? __heap_size__  : 0x00000300;

STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x00000300;

即可解決

另一種暴力的方式如下 : 

#define VAR_PUT_IN_DATA_SECTION    __attribute__((section(".data")))