Getting hardfault using stemwin GUIDRV_FlexColor driver for st7735 in stm32f407vg EVM after LCD_X_DisplayDriver()

[rutvij]

Posted on October 06, 2016 at 09:38

Hello Folks,

I am working on stm32f407vg EVM, I have interfaced MIDAS LCD using SPI. The LCD has ST7735s controller. Now I am able to make manual patterns of check box, circle and screen colour randomly but I need GUI to be implemented so I have chosen STemWin library , the library is ''STemWin522_CM4_IAR''. I read the user & reference guide of stemwin and found that I can go with ''GUIDRV_FlexColor'' drivers. I have done configurations in LCDconf.c (I have attached here). In GUIconf.c  my configurations are as per below. &sharpdefine GUI_NUMBYTES  (1024) *  15 // // Define the average block size // &sharpdefine GUI_BLOCKSIZE   0x128 I have initialised LCD controller before GUI_INIT(), I have also added ''RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_CRC, ENABLE);'' But unfortunately after returning from ''LCD_X_DisplayDriver()'' function I am getting Hard fault so I need to understand why I am getting hard-fault and is there any issue in my configurations ? Please let me know if I can provide you more details. Any Help on this issue would be great appreciable. Thanks & Regards, Rutvij ---------------------------------------------------------------------- File        : LCDConf.c Purpose     : Display driver configuration file ---------------------------------------------------------------------- */ /**   &sharpinclude <string.h> /* GUI main init as per StemWin */ &sharpinclude ''GUI.h'' /* As per STemWin 5 doc ST7735 Contoler IC's driver config */ &sharpinclude ''GUIDRV_FlexColor.h'' /* For callback registers of LCD */ &sharpinclude ''MCT0144C6W128128PML_App.h'' /********************************************************************* * *       LCD_X_Config *w * Purpose: *   Called during the initialization process in order to set up the *   display driver configuration.                *    */ static void LcdWriteReg(U16 Data) {   // ... TBD by user     SPI_sendCommand(Data); } static void LcdWriteData(U16 Data) {   // ... TBD by user     SPI_sendData(Data); } static void LcdWriteDataMultiple(U16 * pData, int NumItems) {   while (NumItems--) {     // ... TBD by user       SPI_sendData((uint8_t)*pData++);   } } static void LcdReadDataMultiple(U16 * pData, int NumItems) {   while (NumItems--) {     // ... TBD by user       *pData++=SPI_sendData(0x00);   } } void LCD_X_Config(void) {    GUI_DEVICE *pDevice = NULL;    CONFIG_FLEXCOLOR Config = {0};    GUI_PORT_API PortAPI = {0};   /* Set display driver and color conversion */   /* 16 BPP configuration for st7735s */   /*  from specificaly LCD side configure LCD to work on the same BPP       This can be done by cofiguring LCD internal register go into       ''ST7735_COLMOD'' in ''MCT0144C6W128128PML_App.c'' file    */   /* for RGB - GUICC_M565 ,  for BGR - GUICC_565*/   pDevice = GUI_DEVICE_CreateAndLink(GUIDRV_FLEXCOLOR, GUICC_M565, 0, 0);       //   LCD_SetSizeEx (0, LCD_WIDTH , LCD_HEIGHT);   LCD_SetVSizeEx(0, LCD_WIDTH, LCD_HEIGHT);     //   // Orientation   //   Config.Orientation = GUI_SWAP_XY | GUI_MIRROR_Y;   GUIDRV_FlexColor_Config(pDevice, &Config);   // Set controller and operation mode   //     PortAPI.pfWrite16_A0  = LcdWriteReg;   PortAPI.pfWrite16_A1  = LcdWriteData;   PortAPI.pfWriteM16_A1 = LcdWriteDataMultiple;   PortAPI.pfReadM16_A1  = LcdReadDataMultiple;   /* GUIDRV_FLEXCOLOR_F66709 - for st7735 */   /* GUIDRV_FLEXCOLOR_M16C0B8 16bpp, no cache, 8 bit bus - SPI data bus */   GUIDRV_FlexColor_SetFunc(pDevice, &PortAPI, GUIDRV_FLEXCOLOR_F66709, GUIDRV_FLEXCOLOR_M16C0B8);        } /********************************************************************* * *       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;   (void) LayerIndex;   (void) pData;       switch (Cmd)   {       /*      * Called during the initialization process in order to set up the      * display controller and put it into operation.      */       case LCD_X_INITCONTROLLER:     {       return 0;     }     default:         {             r = -1;                      }              }   return r; } /*************************** End of file ****************************/ #stemwin #stm32f407vg #st7735

[slimen]

Posted on October 06, 2016 at 19:02

Hello,

Refer to this [DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Problem%20getting%20STemWin%20to%20work%20with%20RA8875-Based%20LCD&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=338]thread and

http://forum.segger.com/index.php?page=Thread&threadID=2435

, may help you on this issue.Regards