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[ARM] Running emwin on st7735

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monjiemegoo

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hellow guys
i have a JHD-TFT1.8-16A lcd with st7735 driver in it. i want to run emwin on this lcd using a lpc1788 board. my board has a 32mb external ram and i am sure the ram config is ok. i write the below code to run emwin. but nothing happend when i use gui_setbackcolor function.

please if some one knows whats wrong help me. i know this lcd has a ic driver (st7735) but iam not sure this is the right way to connect emwin to ic driver. what is wrong in this code?

if someone know a refrence that can help me please introduce to me.
thanks.


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//lcdconfig.c
#include "common.h"
#include "GUIDRV_Lin.h"
#include "GUIDRV_FlexColor.h"
 
 
/*********************************************************************
*
*       Layer configuration (to be modified)
*
**********************************************************************
*/
//
// Physical display size
//
 
 
#define XSIZE_PHYS 160
#define YSIZE_PHYS 128
 
 
#define EXTERNAL_RAM_BASE_ADDRESS    0xA0000000
 
 
#define VRAM_ADDR        EXTERNAL_RAM_BASE_ADDRESS
 
 
 
 
//
// Color conversion
//
#define COLOR_CONVERSION GUICC_565
 
 
//
// Display driver
//
#define DISPLAY_DRIVER GUIDRV_FLEXCOLOR 
 
 
#define DISPLAY_ORIENTATION (GUI_MIRROR_Y)
 
 
/*********************************************************************
*
*       Configuration checking
*
**********************************************************************
*/
#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
#ifndef   DISPLAY_ORIENTATION
  #define DISPLAY_ORIENTATION 0
#endif
 
 
/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _InitController
*
* Purpose:
*   Should initialize the display controller
*/
static void _InitController(void) {
    ST7735_Init();
 
 
}
 
 
/*********************************************************************
*
*       _SetVRAMAddr
*
* Purpose:
*   Should set the frame buffer base address
*/
static void _SetVRAMAddr(void * pVRAM) {
  LPC_LCD->UPBASE = (uint32_t)pVRAM & ~7UL;
  //LPC_LCD->LPBASE = (uint32_t)pVRAM & ~7UL;
}
 
 
/*********************************************************************
*
*       _SetOrg
*
* Purpose:
*   Should set the origin of the display typically by modifying the
*   frame buffer base address register
*/
static void _SetOrg(int xPos, int yPos) {    
    (void)xPos;
  //
  // Set start address for display data and enable LCD controller
  //
    LPC_LCD->UPBASE = VRAM_ADDR + (yPos * XSIZE_PHYS * 2);  // Needs to be set, before LCDC is enabled
}
 
 
/*********************************************************************
*
*       _SetLUTEntry
*
* Purpose:
*   Should set the desired LUT entry
*/
static void _SetLUTEntry(LCD_COLOR Color, U8 Pos) {
  /* TBD by customer */
}
/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       LCD_X_Config
*
* Purpose:
*   Called during the initialization process in order to set up the
*   display driver configuration.
*   
*/
int tmp2;
void LCD_X_Config(void) {
  GUI_DEVICE * pDevice;
  GUI_PORT_API PortAPI = {0};
  CONFIG_FLEXCOLOR Config = {0};
  //
  // Set display driver and color conversion for 1st layer
  //
  pDevice = GUI_DEVICE_CreateAndLink(DISPLAY_DRIVER, COLOR_CONVERSION, 0, 0);
    
  //
  // Display driver configuration, required for Lin-driver
  //
  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);
    
 
 
     PortAPI.pfWrite8_A0  = ST7735_cmd;
   PortAPI.pfWrite8_A1  = ST7735_write;
     PortAPI.pfWriteM8_A0 = ST7735_cmdM;
     PortAPI.pfWriteM8_A1 = ST7735_writeM;
    
    GUIDRV_FlexColor_SetFunc(pDevice, &PortAPI, GUIDRV_FLEXCOLOR_F66709, GUIDRV_FLEXCOLOR_M16C0B8);
  Config.Orientation = DISPLAY_ORIENTATION;
  GUIDRV_FlexColor_Config(pDevice, &Config);
    
  //
  // Set user palette data (only required if no fixed palette is used)
  //
  #if defined(PALETTE)
    LCD_SetLUTEx(0, PALETTE);
  #endif
}
 
 
/*********************************************************************
*
*       LCD_X_DisplayDriver
*
* Purpose:
*   This function is called by the display driver for several purposes.
*   To support the according task the routine needs to be adapted to
*   the display controller. Please note that the commands marked with
*   'optional' are not cogently required and should only be adapted if 
*   the display controller supports these features.
*
* Parameter:
*   LayerIndex - Index of layer to be configured
*   Cmd        - Please refer to the details in the switch statement below
*   pData      - Pointer to a LCD_X_DATA structure
*
* Return Value:
*   < -1 - Error
*     -1 - Command not handled
*      0 - Ok
*/
int LCD_X_DisplayDriver(unsigned LayerIndex, unsigned Cmd, void * pData) {
  int r;
    unsigned long Addr, BufferSize;
 
 
    GUI_USE_PARA(LayerIndex);
  GUI_USE_PARA(pData);
  switch (Cmd) {
  //
  // Required
  //
  case LCD_X_INITCONTROLLER: {
    //
    // Called during the initialization process in order to set up the
    // display controller and put it into operation. If the display
    // controller is not initialized by any external routine this needs
    // to be adapted by the customer...
    //
    _InitController();
    return 0;
  }
  case LCD_X_SETVRAMADDR: {
    //
    // Required for setting the address of the video RAM for drivers
    // with memory mapped video RAM which is passed in the 'pVRAM' element of p
    //
    LCD_X_SETVRAMADDR_INFO * p;
    p = (LCD_X_SETVRAMADDR_INFO *)pData;
    _SetVRAMAddr(p->pVRAM);
    return 0;
  }
  case LCD_X_SETORG: {
    //
    // Required for setting the display origin which is passed in the 'xPos' and 'yPos' element of p
    //
    LCD_X_SETORG_INFO * p;
    p = (LCD_X_SETORG_INFO *)pData;
    _SetOrg(p->xPos, p->yPos);
    return 0;
  }
  case LCD_X_SETLUTENTRY: {
    //
    // Required for setting a lookup table entry which is passed in the 'Pos' and 'Color' element of p
    //
    LCD_X_SETLUTENTRY_INFO * p;
    p = (LCD_X_SETLUTENTRY_INFO *)pData;
    _SetLUTEntry(p->Color, p->Pos);
    return 0;
  }
  case LCD_X_ON: {
    //
    // Required if the display controller should support switching on and off
    //
    return 0;
  }
  case LCD_X_OFF: {
    //
    // Required if the display controller should support switching on and off
    //
    // ...
    return 0;
  }
  default:
    r = -1;
  }
  return r;
}
 
 
/*************************** End of file ****************************/



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//guiconfig.c
/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
//
// Define the available number of bytes available for the GUI
//
 
 
#define EXTERNAL_RAM_BASE_ADDRESS    0xA0000000
 
 
volatile unsigned long *emwin_memory_pointer = (unsigned long *)(EXTERNAL_RAM_BASE_ADDRESS + 16 * 1024 * 1024);
 
 
#define EMWIN_MEMORY_SIZE  (16 * 1024 * 1024)
 
 
/*********************************************************************
*
*       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(emwin_memory_pointer, EMWIN_MEMORY_SIZE);
 
 
    // To reduce the library size we shouldn't use fonts:
//  //
//  // Set default font
//  //
//  GUI_SetDefaultFont(&GUI_FontBTitr37);
}
 
 
/*************************** End of file ****************************/


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//main.c
int main()
{
    GUI_Init();
    GUI_SetBkColor(GUI_RED);
    GUI_Clear();
    while(1)
    {
        
    }
}
 
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