Hi,
You have to link the "GUI-memory" into the SDRAM. How this is done depends our your linker.
emWin will allocate memory only from the block set with GUI_ALLOC_AssignMemory().
Here is an example from a GUIConf.c which does it.
#include "GUI.h"
/*********************************************************************
*
* Defines
*
**********************************************************************
*/
//
// Define the available number of bytes available for the GUI
//
#define GUI_NUMBYTES (1024 * 1024 * 4)
#if (defined __ICCARM__) // IAR
static __no_init U32 aMemory[GUI_NUMBYTES / 4] @ "GUI_RAM";
#elif (defined __SES_ARM) // SES
static U32 aMemory[GUI_NUMBYTES / 4] __attribute__ ((section (".GUI_RAM")));
#else
static U32 aMemory[GUI_NUMBYTES / 4];
#endif
/*********************************************************************
*
* Static code
*
**********************************************************************
*/
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* GUI_X_Config
*
* Purpose:
* Called during the initialization process in order to set up the
* available memory for the GUI.
*/
void GUI_X_Config(void) {
//
// Assign memory to emWin
//
GUI_ALLOC_AssignMemory(aMemory, GUI_NUMBYTES);
}
If you are using the GUIDRV_Lin driver you might also want to link the frame buffer to the external memory. This is most likely done the same way as with the "GUI-memory".
Regards
Sven
Hello Sven,
Thank you for the very specific answer.
Very helpful 
Best Regards,
Rowel
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