Text in Text Area is flickering..

[RG.3]

when I am rotating the text by 270 in setup screen() . From the handleTickEvent I am changing the wildcard text as well as I am also changing the position height and width though I am getting text but it is grainy...not clear(I have included invalidate() function also

Load in this Image).I tried changing alpha and various height and width but still I am getting grains.....

[AJT141 · Accepted solution]

Hi,

Can you share your code ?

Did you configure the MPU ? I had the same problem and now it is solved thanks ur

Here are some examples given by ST employee; just call this function in your main. Maybe it will need your modification - depends on frame buffer location !

void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct = {0};
 
  /* Disables the MPU */
  HAL_MPU_Disable();
  /** Initializes and configures the Region and the memory to be protected 
  */
 
 
 
   //Range 0x60000000 to 0xE0000000
 //Strongly ordered
// Disable code execution
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress = 0;
  MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
  MPU_InitStruct.SubRegionDisable = 0x87;         //exclude first, second, third and last regions
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
 
 
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.BaseAddress = 0x90000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_256MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.BaseAddress = 0x90000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_64MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER2;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_1MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER3;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_256KB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /* Enables the MPU */
  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
 
}

Regards,

AJT

[RG.3]

Yes I have Included MPU_config in main()....

The function is

void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct = {0};
 
  /* Disables the MPU */
  HAL_MPU_Disable();
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER1;
  MPU_InitStruct.BaseAddress = 0x90000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_256MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER2;
  MPU_InitStruct.BaseAddress = 0x90000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_128MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER3;
  MPU_InitStruct.BaseAddress = 0xD0000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_256MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER4;
  MPU_InitStruct.BaseAddress = 0xD0000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_32MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /* Enables the MPU */
  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
 
}

Gui code

void normal_screen_hView::setupScreen()
{
    ticks = 0;
    item_index = 0;
    load_index = 0;
    item_TypedText = T_INPUT;
 
    normal_screen_hViewBase::setupScreen();
    layoutScreenBase();
    refreshScreen(presenter->getScreenInfor());
}
void normal_screen_hView::refreshScreen(LCD_screen_t *LCD_screen)
{
  uint16_t i;
  Normal_t normal;
  
   
  switch(normal.index)
  {
    case NormalMenuIndex_INPUT_VOLTAGE:
       item_TypedText = T_INPUT;
      Unicode::snprintf(normal_item_textBuffer, 30, "%s", TypedText(item_TypedText).getText());
       break;
    case NormalMenuIndex_OUTPUT_FREQUENCY:
            item_TypedText = T_OUTPUT;
      Unicode::snprintf(normal_item_textBuffer, 30, "%s", TypedText(item_TypedText).getText());
            break;
    case NormalMenuIndex_OUTPUT_VOLTAGE:
      
      item_TypedText = T_OUTPUT;
      Unicode::snprintf(normal_item_textBuffer, 30, "%s", TypedText(item_TypedText).getText());
      break;
    case NormalMenuIndex_RUN_TIME:
      item_TypedText = T_RUNTIME;
      Unicode::snprintf(normal_item_textBuffer, 30, "%s", TypedText(item_TypedText).getText());
            break;
    default:
      break;
  }
      
   
    
    
    
  
      
     item_text.invalidate();
    load_text.setTypedText(TypedText(T_LOAD));	
    load_text.invalidate();		
  
}
 
void normal_screen_hView::layoutScreenBase()
{
    icon_battery.setBitmap(Bitmap(BITMAP_BATTERY_03_WHITE_H_ID));
    icon_battery.setXY(    battery_icon_pos.y, 
                        CONTAINER_SISE - battery_icon_pos.x - icon_battery.getHeight());
    container.add(icon_battery);
    
    icon_load.setBitmap(Bitmap(BITMAP_LOAD_02_H_ID));
    icon_load.setXY(load_icon_pos.y, 
                    CONTAINER_SISE - load_icon_pos.x - icon_load.getHeight());
    container.add(icon_load);
    
    icon_audio.setBitmap(Bitmap(BITMAP_ICON_AUDIO_OFF_H_ID));
    icon_audio.setXY(    audio_icon_pos.y, 
                        CONTAINER_SISE - audio_icon_pos.x - icon_audio.getHeight());
    container.add(icon_audio);
    
    icon_plug.setBitmap(Bitmap(BITMAP_ICON_PLUG_OFF_H_ID));
    icon_plug.setXY(plug_icon_pos.y, 
                    CONTAINER_SISE - plug_icon_pos.x - icon_plug.getHeight());
    container.add(icon_plug);
    
    icon_charging.setBitmap(Bitmap(BITMAP_ICON_CHARGING_WHITE_H_ID));
    icon_charging.setXY(charging_icon_pos.y, 
                        CONTAINER_SISE - charging_icon_pos.x - icon_charging.getHeight());
    container.add(icon_charging);
    
    icon_status_online_green.setBitmap(Bitmap(BITMAP_ICON_STATUS_ONLINE_GREEN_H_ID));
    icon_status_online_green.setXY(    status_online_green_icon_pos.y, 
                                    CONTAINER_SISE - status_online_green_icon_pos.x - icon_status_online_green.getHeight());
    container.add(icon_status_online_green);
    
    item_text.setPosition(75,12,46,226);
    
    item_text.setColor(touchgfx::Color::getColorFrom24BitRGB(204, 204, 204));
    item_text.setLinespacing(0);
    item_text.setRotation(TEXT_ROTATE_270);
    normal_item_textBuffer[0] = 0;
    item_text.setWildcard(normal_item_textBuffer);
    item_text.setTypedText(TypedText(T_NOR_ITEM));
    container.add(item_text);
   
    load_text.setPosition(155,12,31,150);
    load_text.setColor(touchgfx::Color::getColorFrom24BitRGB(204, 204, 204));
    load_text.setLinespacing(0);
    load_text.setRotation(TEXT_ROTATE_270);
    normal_load_textBuffer[0] = 0;    
    load_text.setWildcard(normal_load_textBuffer);
    load_text.setTypedText(TypedText(T_NOR_LOAD));
    container.add(load_text);
   
 
}
 

I am calling refresh screen function from handle tick event....(For every 2 seconds)

[RG.3]

Thanks a lot! It worked....

[AJT141]

Hmm you have to test with different MPU configs (i gave you more than one configuration but I agree that is was not clear).

Just select one config between two

HAL_MPU_ConfigRegion(&MPU_InitStruct);

because currently you are just testing the last configuration of the 5 configurations i gave you.

For me, this configuration fixed my problem (especially the MPU_ACCESS_NOT_BUFFERABLE value) :

MPU_Region_InitTypeDef MPU_InitStruct = {0};
 
  /* Disables the MPU */
  HAL_MPU_Disable();
  /** Initializes and configures the Region and the memory to be protected 
  */
    // AXI SRAM
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE; 
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
    
  /* Enables the MPU */
  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);

You can also try to invalidate the whole background and check if it solve the issue.

Can you tell me why Normal_t normal is not initialized ? do you always go in the default case ?

Can set a breakpoint on item_text.invalidate(); line code and check if you are going to display the correct string ?

regards,

Ajt

[EDIT]

I had internet issue at work so i couldn't send this answer. Can you explain which configuration made your project work ?

[RG.3]

Greetings,

Configuration 2 worked for me....that Normal_t is declared in other C file. I understood what u are trying to explain....Thanks a ton for your timely help.

Thanks and Regards

Rishikesh G

[RG.3]

Greetings,

Configuration 2 worked for me....that Normal_t is declared in other C file. I understood what u are trying to explain....Thanks a ton for your timely help.

Thanks and Regards

Rishikesh G

[AJT141]

Ok good !

Have a nice day

AJT​

[RG.3]

Wishing u the same!