[ARM] emwin whitout external ram stm32f103

[monjiemegoo]

hellow guys
i have a JHD-TFT1.8 inch lcd with st7735 driver in it. and also i have a stm32f103ve microcntroller. i want to run emwin on my lcd and i dont want use external ram. i use keil and range of internal ram in keil is started at 0x20000000 and the size of ram is 0x10000.
first of all i wanna know is is possible to run emwin without external ram in this system.
second if it is possible how i can do it ?
emwin for config have to file : lcdconfig.c and guiconfig.c. i config emwin in past for lpc1788. back there i have external ram for graphical memory but now i wanna use internal ram Addresses. here is my code. but i code crash in gui_init functin. what shoud i do?

//guiconfig.c

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#include "GUI.h"
#define EXTERNAL_RAM_BASE_ADDRESS   0x20005000
volatile unsigned long *emwin_memory_pointer = (unsigned long *)(EXTERNAL_RAM_BASE_ADDRESS + 20 * 1024);
#define EMWIN_MEMORY_SIZE  (20 * 1024 )
void GUI_X_Config(void) {
 
  GUI_ALLOC_AssignMemory(emwin_memory_pointer, EMWIN_MEMORY_SIZE);
}

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//lcdconfig.c

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#include "GUI.h"
#include "GUIDRV_Lin.h"
#include "GUIDRV_FlexColor.H"
#include "st7735.h"
#define XSIZE_PHYS 160
#define YSIZE_PHYS 128
 
#define EXTERNAL_RAM_BASE_ADDRESS   0x20005000
#define VRAM_ADDR       EXTERNAL_RAM_BASE_ADDRESS
#define COLOR_CONVERSION GUICC_8
#define DISPLAY_DRIVER   GUIDRV_LIN_4  
#ifndef   VRAM_ADDR
  #define VRAM_ADDR 0
#endif
#ifndef   XSIZE_PHYS
  #error Physical X size of display is not defined!
#endif
#ifndef   YSIZE_PHYS
  #error Physical Y size of display is not defined!
#endif
#ifndef   COLOR_CONVERSION
  #error Color conversion not defined!
#endif
#ifndef   DISPLAY_DRIVER
  #error No display driver defined!
#endif
 
static void _InitController(void) {
    ST7735_Init();
}
void LCD_X_Config(void) {
  GUI_DEVICE_CreateAndLink(DISPLAY_DRIVER, COLOR_CONVERSION, 0, 0);
  if (LCD_GetSwapXY()) {
    LCD_SetSizeEx (0, YSIZE_PHYS, XSIZE_PHYS);
    LCD_SetVSizeEx(0, YSIZE_PHYS, XSIZE_PHYS);
  } else {
    LCD_SetSizeEx (0, XSIZE_PHYS, YSIZE_PHYS);
    LCD_SetVSizeEx(0, XSIZE_PHYS, YSIZE_PHYS);
  }
    LCD_SetVRAMAddrEx(0, (void *)VRAM_ADDR);
}
int LCD_X_DisplayDriver(unsigned LayerIndex, unsigned Cmd, void * pData) {
    switch (Cmd) 
    {
        case LCD_X_INITCONTROLLER: 
    _InitController();
        break;
    }
    
  GUI_USE_PARA(LayerIndex);
  GUI_USE_PARA(Cmd);
  GUI_USE_PARA(pData);
  return 0;
}

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//main.c

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#include "stm32f10x.h"
#include "GUI.h"                       
#include "st7735.h"
 
uint32_t TimingDelay = 0;
 
void SysTick_Handler1(void);
void Delay_US(__IO uint32_t nTime);
 
int main()
{
 
    GUI_Init();
        GUI_SetBkColor(GUI_BLACK);
    GUI_SetColor(GUI_BLACK);
    GUI_Clear();
    GUI_DispStringAt("aaa",10,10);
    while(1)
    {
        
    }
}

---

 

[Easyrider83]

It is possible. I have STM32F103VC which runs emWin on SD1289 320x240. But you need to understand that basically all cpu resources will be used for GUI.
In your case you have a troubles with interface functions. You didn't provided LCD driver for your application.