[About HEAP_SIZE.]

I am developing ugfx_2.9 for a DIY product. Keil uVision is used and the main MCU is nRF52840.

1.
The display uses E-ink's ET011TJ2. Is the driver IC correct for UC8173?

2.
However, g->priv = 0 in the initialization function of <gdisp_lld_UC8173.c> as follows. So return gFalse; proceed with As a result, the initialization routine does not proceed.
sizeof(UC8173_Private) = 14412

How can I initialize normally?

3.
I tried changing HESP_SIZE in various ways as follows. But in all cases g->priv = 0 .

#define GFX_OS_HEAP_SIZE 14412 //0 //4095 //20480 // 30720 //10240 //10240 //40960

4.
I have set it up like this:
#define GFX_EMULATE_MALLOC GFXON
Still, g->priv = 0.

Since g->priv = 0 unconditionally, the initialization function cannot proceed.
How to solve it?

<gfxconf.h>

///////////////////////////////////////////////////////////////////////////
// GOS - One of these must be defined, preferably in your Makefile       //
///////////////////////////////////////////////////////////////////////////
//#define GFX_USE_OS_CHIBIOS                           GFXOFF
//#define GFX_USE_OS_FREERTOS                          GFXOFF
//    #define GFX_FREERTOS_USE_TRACE                   GFXOFF
//#define GFX_USE_OS_WIN32                             GFXOFF
//#define GFX_USE_OS_LINUX                             GFXOFF
//#define GFX_USE_OS_OSX                               GFXOFF
//#define GFX_USE_OS_ECOS                              GFXOFF
//#define GFX_USE_OS_RAWRTOS                           GFXOFF
//#define GFX_USE_OS_ARDUINO                           GFXOFF
//#define GFX_USE_OS_KEIL                              GFXON
//#define GFX_USE_OS_RTX5                              GFXOFF
#define GFX_USE_OS_CMSIS                             GFXON			<<<=======
//#define GFX_USE_OS_CMSIS2                            GFXOFF
//#define GFX_USE_OS_RAW32                             GFXOFF
//#define GFX_USE_OS_ZEPHYR                            GFXOFF
//#define GFX_USE_OS_NIOS                              GFXOFF
//#define GFX_USE_OS_QT                                GFXOFF
//    #define INTERRUPTS_OFF()                         optional_code
//    #define INTERRUPTS_ON()                          optional_code

// Options that (should where relevant) apply to all operating systems
//    #define GFX_NO_INLINE                            GFXOFF
//    #define GFX_COMPILER                             GFX_COMPILER_UNKNOWN
//    #define GFX_SHOW_COMPILER                        GFXOFF
//    #define GFX_CPU                                  GFX_CPU_UNKNOWN
//    #define GFX_CPU_NO_ALIGNMENT_FAULTS              GFXOFF
//    #define GFX_CPU_ENDIAN                           GFX_CPU_ENDIAN_UNKNOWN
    #define GFX_OS_HEAP_SIZE                         14412 //0 //4095 //20480 // 30720 //10240 //10240 //40960		<<<=======
//    #define GFX_OS_NO_INIT                           GFXOFF
//    #define GFX_OS_INIT_NO_WARNING                   GFXOFF
//    #define GFX_OS_PRE_INIT_FUNCTION                 myHardwareInitRoutine
//    #define GFX_OS_EXTRA_INIT_FUNCTION               myOSInitRoutine
//    #define GFX_OS_EXTRA_DEINIT_FUNCTION             myOSDeInitRoutine
//    #define GFX_OS_CALL_UGFXMAIN                     GFXOFF
//    #define GFX_OS_UGFXMAIN_STACKSIZE                0
//    #define GFX_EMULATE_MALLOC                       GFXON		<<<=======
//    #define GFX_MEM_LT64K                            GFXOFF

<gdisp_lld_UC8173.c>

LLDSPEC gBool gdisp_lld_init(GDisplay* g)
{
	UC8173_Private	*priv;

	printf("UC8173:gdisp_lld_init - 1 HEAP = %d\r\n", GFX_OS_HEAP_SIZE);
	
	// Allocate the private area
	g->priv = gfxAlloc(sizeof(UC8173_Private));			<<<=======
	printf("UC8173:gdisp_lld_init - 2 memAlloc = %d, sz = %d\r\n", g->priv, sizeof(UC8173_Private));   <<<=======

	if (!g->priv)
		return gFalse;
	priv = (UC8173_Private *)g->priv;

 

gfxconf.h