{"id":11661,"date":"2022-09-10T04:08:25","date_gmt":"2022-09-10T04:08:25","guid":{"rendered":"http:\/\/fastbitlab.com\/?p=11661"},"modified":"2023-08-05T10:41:23","modified_gmt":"2023-08-05T05:11:23","slug":"microcontroller-embedded-c-programming-lecture-103-applicability-of-bitwise-operators-xor","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/microcontroller-embedded-c-programming-lecture-103-applicability-of-bitwise-operators-xor\/","title":{"rendered":"Microcontroller Embedded C Programming lecture 103| Applicability of bitwise operators : xor"},"content":{"rendered":"
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Applicability of bitwise operators : xor<\/span><\/strong><\/h1>\n
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In this article, let’s learn about the applicability of bitwise XOR operators. <\/span><\/p>\n

The XOR (^) operator you can use to toggle the bits. Let’s understand how XOR works. <\/span><\/p>\n

You know that the XOR operator needs 2 operands: operand1<\/strong><\/span> and operand2<\/strong>. <\/span><\/span><\/p>\n

The result of the XOR operator will be 0 when both the operands are equal. When XOR operands are not equal, the result will be 1. That’s a truth table of bitwise XOR. <\/span><\/p>\n

You can use this feature to toggle the bits or toggle the data.<\/span><\/p>\n

\"Applicability
Figure 1. Toggling of bits<\/span><\/figcaption><\/figure>\n

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For example, here one statement Led_state = Led_state ^ 0x01. <\/span><\/p>\n

Now let’s assume that Led_state is 0, 0 ^ 1. Here operands are different. So, the output will be 1. Now the Led_state is 1. So, 1 ^ 1. Here operands are equal, so now Led_state becomes 0. Like that. So, the Led_state toggles.<\/span><\/p>\n

You can use this feature of the XOR to toggle the GPIO, toggle the LED, or like that when you code for the microcontroller program.<\/span><\/p>\n

Otherwise, you have to write the program something like this.<\/span><\/p>\n

while(1)<\/span> {<\/span>\r\n     if<\/span>(LED == 0) {<\/span><\/span>\r\n         LED = 1;<\/span>\r\n     }else<\/span>{\r\n<\/span>          LED = 0;\r\n<\/span>}<\/span><\/span><\/pre>\n
There is a while loop, while (1). If you want to toggle the LED continuously, you may have to do something like this. If(LED == 0), then make LED = 1, else make LED = 0. <\/span><\/p>\n
Suppose, if the Led_state is 0, then LED becomes 1. So, if the LED state is 1, then the LED becomes 0.  <\/span><\/p>\n
Instead of writing all this code, you can just replace this with only one line of code, this one  <\/span>LED ^= 1<\/b>, which is used for toggling. <\/span><\/span><\/p>\n
Let’s use all these operators to write a program for our target board.<\/span><\/p>\n
 <\/p>\n
Exercise<\/b><\/span><\/p>\n
Write a program to turn on the LED of your target board. <\/span><\/p>\n
For this exercise, we need the knowledge of <\/span><\/p>\n
\u2013 pointers<\/span><\/p>\n
\u2013 bitwise operations<\/span><\/p>\n
\u2013 hardware connections<\/span><\/p>\n
you should know about the hardware connections. Because we are working with the hardware now. We are working with a microcontroller, and we are working with an external component that is LED. So, we have to know the hardware connections.<\/span><\/p>\n
I will cover all these things in the following article. Let’s start doing this exercise.<\/span><\/p>\n
 <\/p>\n
FastBit Embedded Brain Academy Courses<\/b><\/span><\/p>\n
Click here: <\/span><\/span>https:\/\/fastbitlab.com\/course1<\/span><\/a><\/span><\/p>\n
 <\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
  Applicability of bitwise operators : xor     In this article, let’s learn about the applicability of bitwise XOR operators.  The XOR (^) operator you can use to toggle the bits. Let’s understand how XOR works. You know that the XOR operator needs 2 operands: operand1 and operand2. The result of the XOR operator […]<\/p>\n","protected":false},"author":1,"featured_media":11664,"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":[16],"class_list":["post-11661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-microcontroller-embedded-c-programming","entry","has-media"],"yoast_head":"\nApplicability of bitwise operator : XOR | FastBit EBA<\/title>\n<meta name=\"description\" content=\"Applicability of bitwise operators. 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