BSP_LCD_DrawBitmap() image,png,Bitmap problems

[YAY.1]

Hello,

After search on net too much time, i found a software that

@sebastien Dumoulin (Community Member)​ made.

https://www.electro-info.ovh/bitmap2headerfile

He or she did really well program, but i have some problems with that.

BSP_LCD_DrawBitmap function in stm32746g_discovery_lcd.c:

void BSP_LCD_DrawBitmap(uint32_t Xpos, uint32_t Ypos, uint8_t *pbmp)

{

 uint32_t index = 0, width = 0, height = 0, bit_pixel = 0;

 uint32_t address;

 uint32_t input_color_mode = 0;

 /* Get bitmap data address offset */

 index = pbmp[10] + (pbmp[11] << 8) + (pbmp[12] << 16) + (pbmp[13] << 24);

 /* Read bitmap width */

 width = pbmp[18] + (pbmp[19] << 8) + (pbmp[20] << 16) + (pbmp[21] << 24);

 /* Read bitmap height */

 height = pbmp[22] + (pbmp[23] << 8) + (pbmp[24] << 16) + (pbmp[25] << 24);

 /* Read bit/pixel */

 bit_pixel = pbmp[28] + (pbmp[29] << 8);

 /* Set the address */

 address = hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (((BSP_LCD_GetXSize()*Ypos) + Xpos)*(4));

 /* Get the layer pixel format */   

 if ((bit_pixel/8) == 4)

 {

  input_color_mode = CM_ARGB8888;

 }

 else if ((bit_pixel/8) == 2)

 {

  input_color_mode = CM_RGB565;  

 }

 else 

 {

  input_color_mode = CM_RGB888;

 }

 /* Bypass the bitmap header */

 pbmp += (index + (width * (height - 1) * (bit_pixel/8)));

 /* Convert picture to ARGB8888 pixel format */

 for(index=0; index < height; index++)

 {

  /* Pixel format conversion */

  LL_ConvertLineToARGB8888((uint32_t *)pbmp, (uint32_t *)address, width, input_color_mode);

  /* Increment the source and destination buffers */

  address+= (BSP_LCD_GetXSize()*4);

  pbmp -= width*(bit_pixel/8);

 }

}

Software export (in pictures.h):

  

stm32f746g-disco BSP_LCD_DrawBitmap() function main.c:

#include "pictures.h"

BSP_SDRAM_Init(); /* Initializes the SDRAM device */

  __HAL_RCC_CRC_CLK_ENABLE(); /* Enable the CRC Module */

  BSP_TS_Init(480, 272);

  BSP_LCD_Init();

  BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS);

  BSP_LCD_DisplayOn();

  BSP_LCD_SelectLayer(0);

  BSP_LCD_Clear(LCD_COLOR_RED);

  BSP_LCD_DisplayStringAt(0, 100, (uint8_t *)"Hello!", CENTER_MODE);

  HAL_Delay(700);

  BSP_LCD_Clear(LCD_COLOR_RED);

  BSP_LCD_DrawBitmap((BSP_LCD_GetXSize() - 80) / 2, (BSP_LCD_GetYSize() - 80) / 2, (uint8_t *)logo);

  HAL_Delay(500);

Software with png:

but after upload to stm32f746g-disco showing on lcd this:

Problems:

1)The picture started to drawing on half of the picture.

2)The picture slipped a little.

Do anyone have any opinion how to fix these ?

Software owner said that this program open source software. Could someone say how to change somethings in The software ?

Could someone recommend a program like this software that png to .h file with this format correctly ?

[Tesla DeLorean]

Duplicative https://community.st.com/s/question/0D50X0000CBjlPjSQJ/how-can-i-convert-imagepng-color-with-bmpcvtexe-to-an-buffer-8-bit-like-stlogoh-and-plot-it-in-stm32f796idiscovery-with-a-function-bsplcddrawbitmapuint32t-xpos-uint32t-ypos-uint8t-pbmp-

It's designed to plot a simple line raster bitmap.

The raster length is wrong, the error accumulates with the line slipping further for each subsequent line.

Get some docs on the .PNG format, and understand it.

Might be easier to convert it to a simple raster format like .BMP, and then use THAT.

[MM..1 · Accepted solution]

/* Convert picture to ARGB8888 pixel format */
 
 for(index=0; index < height; index++)
 {
  /* Pixel format conversion */
  LL_ConvertLineToARGB8888((uint32_t *)pbmp, (uint32_t *)address, width, input_color_mode);
 
  /* Increment the source and destination buffers */
  address+= (BSP_LCD_GetXSize()*4);
  pbmp -= width*(bit_pixel/8);
 }

error is in last line, your used code is only for some sized images for example width 8 16 ... px

for universal you need correct code

Your logo width is 0x37 ...