diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l552xx.s b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l552xx.s
index 03e2c6849e..38da666868 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l552xx.s
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l552xx.s
@@ -40,7 +40,7 @@ __initial_sp
 ;   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Heap_Size       EQU     0x00000200
+Heap_Size       EQU     0x00000000
 
                 AREA    HEAP, NOINIT, READWRITE, ALIGN=3
 __heap_base
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l562xx.s b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l562xx.s
index eb8ac94699..0906ebcaf8 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l562xx.s
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/arm/startup_stm32l562xx.s
@@ -40,7 +40,7 @@ __initial_sp
 ;   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Heap_Size       EQU     0x00000200
+Heap_Size       EQU     0x00000000
 
                 AREA    HEAP, NOINIT, READWRITE, ALIGN=3
 __heap_base
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash.icf
index 0eaadcbd9b..d5b6e6e15a 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__     = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_SRAM1_start__  = 0x20000000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_ns.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_ns.icf
index 5170efc05f..3c93a64047 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_ns.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_ns.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_SRAM1_start__  = 0x20018000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_s.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_s.icf
index 2359d1dab1..b1399e3943 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_s.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xc_flash_s.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x30017FFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_ROM_NSC_start__   = 0x0C01E000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash.icf
index e5a63630ea..0d533dbf06 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__     = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_SRAM1_start__  = 0x20000000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_ns.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_ns.icf
index 6ff4b04336..1155b890b9 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_ns.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_ns.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_SRAM1_start__  = 0x20018000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_s.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_s.icf
index f5d83e3844..c4f5ce58c4 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_s.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xe_flash_s.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x30017FFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_ROM_NSC_start__   = 0x0C03E000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram.icf
index f0141b9243..7318e19497 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define memory mem with size = 4G;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_ns.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_ns.icf
index fd9da5ea4c..8d7320eb39 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_ns.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_ns.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define memory mem with size = 4G;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_s.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_s.icf
index 3c5669f742..886c908a63 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_s.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l552xx_sram_s.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x30017EFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_ROM_NSC_start__   = 0;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash.icf
index e5a63630ea..0d533dbf06 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__     = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_SRAM1_start__  = 0x20000000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_ns.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_ns.icf
index 6ff4b04336..1155b890b9 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_ns.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_ns.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_SRAM1_start__  = 0x20018000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_s.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_s.icf
index f5d83e3844..c4f5ce58c4 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_s.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xe_flash_s.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x30017FFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_ROM_NSC_start__   = 0x0C03E000;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram.icf
index f0141b9243..7318e19497 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define memory mem with size = 4G;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_ns.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_ns.icf
index fd9da5ea4c..8d7320eb39 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_ns.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_ns.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x2002FFFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define memory mem with size = 4G;
diff --git a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_s.icf b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_s.icf
index 3c5669f742..886c908a63 100644
--- a/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_s.icf
+++ b/bsp/stm32/libraries/STM32L5xx_HAL/CMSIS/Device/ST/STM32L5xx/Source/Templates/iar/linker/stm32l562xx_sram_s.icf
@@ -11,7 +11,7 @@ define symbol __ICFEDIT_region_RAM_end__   = 0x30017EFF;
 
 /*-Sizes-*/
 define symbol __ICFEDIT_size_cstack__ = 0x400;
-define symbol __ICFEDIT_size_heap__   = 0x200;
+define symbol __ICFEDIT_size_heap__   = 0x000;
 /**** End of ICF editor section. ###ICF###*/
 
 define symbol __region_ROM_NSC_start__   = 0;