owner-nrf52sdk/nRF5_SDK_15.3.0/modules/nrfx/mdk/startup_config.h

/*

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*/

/* Configure stack size, stack alignement and heap size with a header file instead of project settings or modification of Nordic provided assembler files. Modify this file as needed. */

/* In order to make use this file,
        1. For Keil uVision IDE, in the Options for Target -> Asm tab, define symbol __STARTUP_CONFIG and use the additional assembler option --cpreproc in Misc Control text box.
        2. For GCC compiling, add extra assembly option -D__STARTUP_CONFIG.
        3. For IAR Embedded Workbench define symbol __STARTUP_CONFIG in the Assembler options and define symbol __STARTUP_CONFIG=1 in the linker options.
*/

/* This file is a template and should be copied to the project directory. */

/* Define size of stack. Size must be multiple of 4. */
#define __STARTUP_CONFIG_STACK_SIZE   0x1000

/* Define alignement of stack. Alignment will be 2 to the power of __STARTUP_CONFIG_STACK_ALIGNEMENT. Since calling convention requires that the stack is aligned to 8-bytes when a function is called, the minimum __STARTUP_CONFIG_STACK_ALIGNEMENT is therefore 3. */
#define __STARTUP_CONFIG_STACK_ALIGNEMENT 3

/* Define size of heap. Size must be multiple of 4. */
#define __STARTUP_CONFIG_HEAP_SIZE   0x1000