{"id":15032,"date":"2023-07-24T10:28:32","date_gmt":"2023-07-24T04:58:32","guid":{"rendered":"https:\/\/fastbitlab.com\/?p=15032"},"modified":"2023-10-20T16:01:48","modified_gmt":"2023-10-20T10:31:48","slug":"stm32-ltdc-lcd-tft-lvglmcu3-lecture-44-testing-exercise-001-in-portrait-mode","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/stm32-ltdc-lcd-tft-lvglmcu3-lecture-44-testing-exercise-001-in-portrait-mode\/","title":{"rendered":"STM32-LTDC, LCD-TFT, LVGL(MCU3) Lecture 44| Testing exercise 001 in portrait mode"},"content":{"rendered":"
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<\/div>\n
\n

 <\/p>\n

Testing exercise 001 in portrait mode<\/strong><\/span><\/h1>\n
\n
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<\/div>\n

 <\/p>\n<\/div>\n<\/div>\n<\/div>\n

In the main.c file, I have chosen a width of 239 instead of 320 for the portrait mode. Additionally, I have modified the height of each color bar accordingly.<\/span><\/p>\n

void<\/span> SystemClock_Setup(void);<\/span>\r\nvoid<\/span> LTDC_Pin_Init(void);<\/span>\r\nvoid<\/span> LTDC_Init(void);<\/span>\r\nvoid<\/span> LTDC_Layer_Init(LTDC_Layer_TypeDef<\/span> *pLayer);<\/span>\r\nint<\/span><\/span> main(void<\/span>)\r\n{\r\n   SystemClock_Setup();\r\n   BSP_LCD_Init();\r\n   BSP_LCD_Set_Orientation(PORTRAIT);\r\n   LTDC_Pin_Init();\r\n   LTDC_Init();\r\n   LTDC_Layer_Init(LTDC_Layer1);\r\n   bsp_lcd_set_fb_background_color(BLACK);\r\n#if<\/span>(BSP_LCD_ORIENTATION == LANDSCAPE)\r\n   bsp_lcd_fill_rect(VIOLET, 0, 320, 34*0, 34);\r\n   bsp_lcd_fill_rect(INDIGO, 0, 320, 34*1, 34);\r\n   bsp_lcd_fill_rect(BLUE, 0, 320, 34*2, 34);\r\n   bsp_lcd_fill_rect(GREEN, 0, 320, 34*3, 34);\r\n   bsp_lcd_fill_rect(YELLOW, 0, 320, 34*4, 34);\r\n   bsp_lcd_fill_rect(ORANGE, 0, 320, 34*5, 34);\r\n   bsp_lcd_fill_rect(RED, 0, 320, 34*6, 34);\r\n#elif<\/span>(BSP_LCD_ORIENTATION == PORTRAIT)\r\n   bsp_lcd_fill_rect(VIOLET, 0, 239, 46*0, 46);\r\n   bsp_lcd_fill_rect(INDIGO, 0, 239, 46*1, 46);\r\n   bsp_lcd_fill_rect(BLUE, 0, 239, 46*2, 46);\r\n   bsp_lcd_fill_rect(GREEN, 0, 239, 46*3, 46);\r\n   bsp_lcd_fill_rect(YELLOW, 0, 239, 46*4, 46);\r\n   bsp_lcd_fill_rect(ORANGE, 0, 239, 46*5, 46);\r\n   bsp_lcd_fill_rect(RED, 0, 239, 46*6, 44);\r\n#endif<\/span>\r\n\/* Loop forever *\/<\/span>\r\nfor(;;);<\/span>\r\n}  <\/pre>\n
 <\/p>\n
As a result, the output is displayed in portrait mode.<\/span><\/p>\n
\"Figure
Figure 1. Output<\/span><\/figcaption><\/figure>\n
 <\/p>\n
However, it is actually happening in Portrait-2, not Portrait-1.<\/span><\/p>\n
\"portrait
Figure 2. Direction of pixel display<\/span><\/figcaption><\/figure>\n
 <\/p>\n
If you want to achieve Portrait-1, you need to set MX to 1 and MY to 1. Let’s make those changes.<\/span><\/p>\n
 <\/p>\n
In the BSP_LCD_Set_Orientation function, when it is set to portrait mode, let’s add the MY and MX components as shown in Figure 3.<\/span> <\/span><\/span><\/p>\n
\"portrait
Figure 3. BSP_LCD_Set_Orientation<\/span><\/figcaption><\/figure>\n
 <\/p>\n
After retesting the program, we can observe that the display is reversed.<\/span><\/p>\n
\"portrait
Figure 4. Output<\/span><\/figcaption><\/figure>\n
 <\/p>\n
If you need more information about the LCD’s commands, please refer to the <\/span>datasheet<\/span><\/a><\/span>. You can simply search for the desired command code in the datasheet.<\/span><\/span><\/p>\n
 <\/p>\n
Fastbit Embedded Brain Academy Courses<\/span><\/strong><\/p>\n
https:\/\/fastbitlab.com\/course1<\/a><\/span><\/p>\n
 <\/p>\n<\/div>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
  Testing exercise 001 in portrait mode   In the main.c file, I have chosen a width of 239 instead of 320 for the portrait mode. Additionally, I have modified the height of each color bar accordingly. void SystemClock_Setup(void); void LTDC_Pin_Init(void); void LTDC_Init(void); void LTDC_Layer_Init(LTDC_Layer_TypeDef *pLayer); int main(void) {    SystemClock_Setup();    BSP_LCD_Init();    BSP_LCD_Set_Orientation(PORTRAIT); […]<\/p>\n","protected":false},"author":1,"featured_media":15037,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[8],"tags":[],"class_list":["post-15032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","entry","has-media"],"yoast_head":"\nTesting Portrait Mode and Display Orientation in LVGL Application<\/title>\n<meta name=\"description\" content=\"Explore the process of testing portrait mode and adjusting display orientation in an LVGL application. 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