TM4C129XNCZAD: Tivaware graphic library display rotation

Hi Amit,

Static rotation is enough, do you have the related information?

thanks.

LEON

Hi Amit,

Yes, I found it, we can enable the define while compiling Graphic library.

// Although the display raster scans in a fixed direction with respect to a given origin, the raster display driver can be configured to rotate the

// displayed image to allow displays to be viewed in any portrait or landscape format.  The orientation is selected at build time by defining one of

// NORMAL which orients the displayed image with the same origin as the raster scan, DISPLAY_ROTATE_90 which rotates the

// image such that the image origin is in the top right of the display with respect to the raster origin,  DISPLAY_ROTATE_180 which places the image

// origin in the bottom right of the raster scan or DISPLAY_ROTATE_270 which places the origin at the bottom left of the raster.  In the

// DISPLAY_ROTATE_90 and DISPLAY_ROTATE_270 cases, the width and height reported to the graphics library in the g_sGrRaster16BppDriver structure

// are reversed with respect to \b RASTER_WIDTH and \b RASTER_HEIGHT.

#ifdef DISPLAY_ROTATE_90
//
// This version of the function handles the cases where we are writing
// lines of pixels vertically downwards relative to the raster scan.
//
static void
GrRaster16BppDriverPixelDrawMultiple(void *pvDisplayData, int32_t lX,
                                    int32_t lY, int32_t lX0, int32_t lCount,
                                    int32_t lBPP, const uint8_t *pui8Data,
                                    const uint8_t *pui8Palette)
{
    uint16_t *pui16Ptr;
    uint32_t ui32Byte;
    tRaster16BppDriverInst *pInst;
    int32_t lXMapped, lYMapped;

thanks.

LEON