ST / ST_Events-old

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Dependents:   HelloWorld_CCA01M1 HelloWorld_CCA02M1 CI-data-logger-server HelloWorld_CCA02M1 ... more

This is a fork of the events subdirectory of https://github.com/ARMmbed/mbed-os.

Note, you must import this library with import name: events!!!

Files at this revision

API Documentation at this revision

Revision 9781:7af1a1125f00, committed 2017-02-03

Comitter:
Jaeden Amero
Date:
Fri Feb 03 15:45:24 2017 +0000
Parent:
9778:a21c7b9f3534
Child:
9782:6d175866e5cc
Commit message:
uVisor: Standardize available legacy heap and stack

With the RTOS, the STACK_SIZE specified here is unrelated to the stack
size available for the main thread (that runs pre_main). Save memory by
reducing the stack size to a more reasonable amount.

On uVisor, HEAP_SIZE is both a minimum available and maximum available
heap size. The heap can't grow beyond the end of the heap into the
neighboring stack. On all uVisor-supported platforms, guarantee at least
0x6000 bytes of heap space. This increases the portability of uVisor
applications as the memory available for legacy heap allocations is
guaranteed. This helps to avoid out of memory errors on platforms that
were previously guaranteeing less memory.

Changed in this revision

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/device/TOOLCHAIN_GCC_ARM/MK64FN1M0xxx12.ld Show annotated file Show diff for this revision Revisions of this file
targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/device/TOOLCHAIN_GCC_ARM/STM32F429xI.ld Show annotated file Show diff for this revision Revisions of this file
targets/TARGET_Silicon_Labs/TARGET_EFM32/TARGET_EFM32GG/device/TARGET_1024K/TOOLCHAIN_GCC_ARM/efm32gg.ld Show annotated file Show diff for this revision Revisions of this file 
--- a/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/device/TOOLCHAIN_GCC_ARM/MK64FN1M0xxx12.ld	Tue Feb 07 10:39:22 2017 -0600
+++ b/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/device/TOOLCHAIN_GCC_ARM/MK64FN1M0xxx12.ld	Fri Feb 03 15:45:24 2017 +0000
@@ -53,9 +53,15 @@
 
 __ram_vector_table__ = 1;
 
-/* Heap 1/4 of ram and stack 1/8 */
-__stack_size__ = 0x8000;
-__heap_size__ = 0x10000;
+/* With the RTOS in use, this does not affect the main stack size. The size of
+ * the stack where main runs is determined via the RTOS. */
+__stack_size__ = 0x400;
+
+/* This is the guaranteed minimum available heap size for an application. When
+ * uVisor is enabled, this is also the maximum available heap size. The
+ * HEAP_SIZE value is set by uVisor porters to balance the size of the legacy
+ * heap and the page heap in uVisor applications. */
+__heap_size__ = 0x6000;
 
 HEAP_SIZE  = DEFINED(__heap_size__)  ? __heap_size__  : 0x0400;
 STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x0400;

--- a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/device/TOOLCHAIN_GCC_ARM/STM32F429xI.ld	Tue Feb 07 10:39:22 2017 -0600
+++ b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F429xI/device/TOOLCHAIN_GCC_ARM/STM32F429xI.ld	Fri Feb 03 15:45:24 2017 +0000
@@ -1,8 +1,14 @@
 M_VECTOR_RAM_SIZE = 0x400;
 
-/* Heap: 1/4 of RAM. Stack: 1/8 of RAM. */
-STACK_SIZE = 0x6000;
-HEAP_SIZE = 0xC000;
+/* With the RTOS in use, this does not affect the main stack size. The size of
+ * the stack where main runs is determined via the RTOS. */
+STACK_SIZE = 0x400;
+
+/* This is the guaranteed minimum available heap size for an application. When
+ * uVisor is enabled, this is also the maximum available heap size. The
+ * HEAP_SIZE value is set by uVisor porters to balance the size of the legacy
+ * heap and the page heap in uVisor applications. */
+HEAP_SIZE = 0x6000;
 
 /* Specify the memory areas */
 MEMORY

--- a/targets/TARGET_Silicon_Labs/TARGET_EFM32/TARGET_EFM32GG/device/TARGET_1024K/TOOLCHAIN_GCC_ARM/efm32gg.ld	Tue Feb 07 10:39:22 2017 -0600
+++ b/targets/TARGET_Silicon_Labs/TARGET_EFM32/TARGET_EFM32GG/device/TARGET_1024K/TOOLCHAIN_GCC_ARM/efm32gg.ld	Fri Feb 03 15:45:24 2017 +0000
@@ -9,8 +9,15 @@
 /* Version 4.2.0 */
 /*                                                                  */
 
+/* With the RTOS in use, this does not affect the main stack size. The size of
+ * the stack where main runs is determined via the RTOS. */
 STACK_SIZE = 0x400;
-HEAP_SIZE = 0xC00;
+
+/* This is the guaranteed minimum available heap size for an application. When
+ * uVisor is enabled, this is also the maximum available heap size. The
+ * HEAP_SIZE value is set by uVisor porters to balance the size of the legacy
+ * heap and the page heap in uVisor applications. */
+HEAP_SIZE = 0x6000;
 
 MEMORY
 {