GUIDRV_Lin examples

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  • GUIDRV_Lin examples

    Where can I find some example of how to use GUIDRV_Lin driver?

    I use STM32F412 with STemWin. I want to make STemWin handle only one framebuffer in ram. then I will transfer the contents of the framebuffer to the LCD.

    I have this:

    C Source Code

    1. #define XSIZE_PHYS 128
    2. #define YSIZE_PHYS 160
    5. uint16_t frameBuffer[XSIZE_PHYS*YSIZE_PHYS] __attribute__ ((aligned (16)));
    7. void LCD_X_Config(void)
    8. {
    9. //
    10. // Set display driver and color conversion
    11. //
    12. GUI_DEVICE_CreateAndLink(GUIDRV_LIN_16, // Display driver
    13. GUICC_M565, // Color conversion
    14. 0, 0);
    15. //
    16. // Display driver configuration
    17. //
    18. LCD_SetSizeEx (0, XSIZE_PHYS, YSIZE_PHYS); // Physical display size in pixels
    19. LCD_SetVSizeEx (0, XSIZE_PHYS, YSIZE_PHYS); // Virtual display size in pixels
    20. LCD_SetVRAMAddrEx(0, (void *)frameBuffer); // Video RAM start address
    21. }
    Display All


    C Source Code

    1. void main(void)
    2. {
    3. GUI_Init();
    4. GUI_SetColor(GUI_RED);
    5. const GUI_POINT aPoints[] = {
    6. { 0, 0},
    7. { 0, 159},
    8. { 127, 159},
    9. { 127, 0},
    10. };
    11. GUI_DrawPolygon(aPoints, 4, 0,0);
    12. }
    Display All



    after call to GUI_DrawPolygon() I check framebuffer conetent with debugger, and all is 0x00. It seems that the library has not modified the contents of the framebuffer.

    Where am I wrong? what is missing in initialization? Should I set some functions for LCD_DEVFUNCBUFFER and/or LCD_DEVFUNCRECT and/or LCD_DEVFUNC_FILLRECT?

    best regards
    Max

  • Hi,

    You might use the LCDConf.c coming from ST or the one attached as a reference.

    The ones of ST can be found in the STM32Cube packages in the project folder of a specific board. Like this one for the STM32F746-Discovery board:
    \Projects\STM32746G-Discovery\Applications\STemWin\STemWin_HelloWorld\Src\LCDConf.c

    Attached are two, one for a STM32F7xx and one for an STM32F4xx.

    Regards
    Sven
    Files

    • LCDConf.zip

      (40.86 kB, downloaded 539 times, last: )
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