{"id":4179,"date":"2020-12-05T05:37:25","date_gmt":"2020-12-05T05:37:25","guid":{"rendered":"http:\/\/fastbitlab.com\/?p=4179"},"modified":"2023-09-06T15:22:53","modified_gmt":"2023-09-06T09:52:53","slug":"implementation-of-i2c-master-sending-data-api-part-5","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/implementation-of-i2c-master-sending-data-api-part-5\/","title":{"rendered":"STM32 I2C Lecture 22: Implementation of I2C master sending data API: Part 5"},"content":{"rendered":"<div class=\"boldgrid-section\" style=\"background-image: linear-gradient(to left, #eeeeee, #eeeeee);\" data-bg-color-1=\"#EEEEEE\" data-bg-color-2=\"#EEEEEE\" data-bg-direction=\"to left\">\n<div class=\"container\">\n<div class=\"row\" style=\"padding-top: 50px; padding-bottom: 50px;\">\n<div class=\"col-md-1 col-sm-12 col-xs-12 col-lg-1\">\n<p class=\"\">&nbsp;<\/p>\n<\/div>\n<div class=\"col-md-10 col-sm-12 col-xs-12 col-lg-10\">\n<h1 class=\"\" style=\"border-width: 0px; font-size: 35px; line-height: 55px;\"><span style=\"font-weight: 400; color: #000080;\">Implementation of I2C master sending data API:Part 5<\/span><\/h1>\n<div class=\"row bg-editor-hr-wrap\">\n<div class=\"col-lg-12 col-md-12 col-xs-12 col-sm-12\">\n<p>&nbsp;<\/p>\n<div class=\"bg-hr bg-hr-16\" style=\"border-style: solid; border-width: 0px 0px 3px; color: rgba(11, 34, 151, 0.9); margin-top: -25px;\"><\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<div class=\"row bg-editor-hr-wrap\">\n<hr>\n<\/div>\n<h3 class=\"\" style=\"border-width: 0px; font-size: 20px; line-height: 30px;\"><span style=\"text-decoration: underline; color: #993300;\"><b>Testing I2C MasterSendData() API<\/b><b>:<\/b><\/span><\/h3>\n<p class=\"\" style=\"border-width: 0px; font-family: 'Roboto Slab'; font-weight: 400; font-size: 17px; line-height: 30px;\" data-font-family=\"Roboto Slab\" data-font-weight=\"400\" data-font-style=\"\"><span style=\"font-weight: 400; color: #000000;\">Before testing the code, build the code to check whether we encounter any error or not.<\/span><\/p>\n<ul class=\"\" style=\"border-width: 0px; font-family: 'Roboto Slab'; font-weight: 400; font-size: 17px; line-height: 30px;\" data-font-family=\"Roboto Slab\" data-font-weight=\"400\" data-font-style=\"\">\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400; color: #000000;\">Save the file.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400; color: #000000;\">Right-click on the project and select the build project option to build the project.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400; color: #000000;\">There are a couple of errors, as shown in Figure 1.&nbsp;<\/span><\/li>\n<\/ul>\n<p class=\"\">&nbsp;<\/p>\n<figure id=\"attachment_4182\" aria-describedby=\"caption-attachment-4182\" style=\"width: 723px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-4182\" src=\"http:\/\/fastbitlab.com\/wp-content\/uploads\/2020\/12\/Figure-1-9.png\" alt=\"Implementation of I2C master sending\" width=\"723\" height=\"386\" srcset=\"https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9.png 1917w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-300x160.png 300w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-768x410.png 768w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-1024x546.png 1024w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-600x320.png 600w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-120x64.png 120w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-500x267.png 500w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-200x107.png 200w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-400x213.png 400w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-800x427.png 800w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-1-9-1200x640.png 1200w\" sizes=\"(max-width: 723px) 100vw, 723px\" \/><figcaption id=\"caption-attachment-4182\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Figure 1. Errors encountered while building the project.<\/span><\/figcaption><\/figure>\n<p class=\"\">&nbsp;<\/p>\n<p class=\"\" style=\"border-width: 0px; font-family: 'Roboto Slab'; font-weight: 400; font-size: 17px; line-height: 30px;\" data-font-family=\"Roboto Slab\" data-font-weight=\"400\" data-font-style=\"\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">The problem is with the I2C driver.h, there are no include guards. The include guards prevent the inclusion of multiple definitions during the preprocessor stage of the compilation. It prevents the multiple inclusion of the header file contents. Whenever you create a header file, the include guards will be added automatically by the eclipse. But for I2C, there are no include guards. If you face the same&nbsp;<\/span><span style=\"font-weight: 400;\">problem, then add the no include guards in the I2C driver.h file, as shown in Figure 2. At the end of the program, add #endif.<\/span><\/span><\/p>\n<p class=\"\">&nbsp;<\/p>\n<figure id=\"attachment_4184\" aria-describedby=\"caption-attachment-4184\" style=\"width: 690px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-4184\" src=\"http:\/\/fastbitlab.com\/wp-content\/uploads\/2020\/12\/Figure-2-7.png\" alt=\"Implementation of I2C master sending- I2C MasterSendData() API\" width=\"690\" height=\"367\" srcset=\"https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7.png 1913w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-300x160.png 300w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-768x409.png 768w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-1024x545.png 1024w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-600x320.png 600w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-120x64.png 120w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-500x266.png 500w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-200x107.png 200w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-400x213.png 400w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-800x426.png 800w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-2-7-1200x639.png 1200w\" sizes=\"(max-width: 690px) 100vw, 690px\" \/><figcaption id=\"caption-attachment-4184\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Figure 2. Code to add no include guards in I2C driver.h file.<\/span><\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<div class=\"mceTemp\"><\/div>\n<ul class=\"\" style=\"border-width: 0px; font-family: 'Roboto Slab'; font-weight: 400; font-size: 17px; line-height: 25px;\" data-font-family=\"Roboto Slab\" data-font-weight=\"400\" data-font-style=\"\">\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400; color: #000000;\">Compile once again. There is another error called redefinition of dummyRead. Remove the redefinition shown in Figure 3.<\/span><\/li>\n<\/ul>\n<div class=\"mceTemp\"><\/div>\n<figure id=\"attachment_4185\" aria-describedby=\"caption-attachment-4185\" style=\"width: 695px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-4185\" src=\"http:\/\/fastbitlab.com\/wp-content\/uploads\/2020\/12\/Figure-3-9.png\" alt=\"Implementation of I2C master sending-I2C MasterSendData() API\" width=\"695\" height=\"370\" srcset=\"https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9.png 1915w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-300x160.png 300w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-768x409.png 768w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-1024x545.png 1024w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-600x319.png 600w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-120x64.png 120w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-500x266.png 500w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-200x106.png 200w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-400x213.png 400w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-800x426.png 800w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-3-9-1200x639.png 1200w\" sizes=\"(max-width: 695px) 100vw, 695px\" \/><figcaption id=\"caption-attachment-4185\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Figure 3. Redefinition of dummyRead.<\/span><\/figcaption><\/figure>\n<p class=\"\">&nbsp;<\/p>\n<ul class=\"\" style=\"width: auto; margin-left: 0px; margin-right: auto; border-width: 0px; font-family: 'Roboto Slab'; font-weight: 400; font-size: 17px;\" data-font-family=\"Roboto Slab\" data-font-weight=\"400\" data-font-style=\"\">\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400; color: #000000;\">Then compile once again, now the code is compiled successfully (Figure 4).<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_4186\" aria-describedby=\"caption-attachment-4186\" style=\"width: 695px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4186\" src=\"http:\/\/fastbitlab.com\/wp-content\/uploads\/2020\/12\/Figure-4-6.png\" alt=\"I2C MasterSendData() API\" width=\"695\" height=\"369\" srcset=\"https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6.png 1917w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-300x159.png 300w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-768x408.png 768w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-1024x544.png 1024w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-600x319.png 600w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-120x64.png 120w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-500x266.png 500w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-200x106.png 200w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-400x213.png 400w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-800x425.png 800w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2020\/12\/Figure-4-6-1200x638.png 1200w\" sizes=\"(max-width: 695px) 100vw, 695px\" \/><figcaption id=\"caption-attachment-4186\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Figure 4. Code is compiled successfully without any error.<\/span><\/figcaption><\/figure>\n<p class=\"\">&nbsp;<\/p>\n<p class=\"\" style=\"font-size: 20px; line-height: 30px; font-family: 'Roboto Slab'; font-weight: 400;\" data-font-family=\"Roboto Slab\" data-font-weight=\"400\" data-font-style=\"\"><span style=\"color: #000080;\"><strong>FastBit Embedded Brain Academy Courses<\/strong><\/span><\/p>\n<p class=\"\" style=\"font-size: 17px;\"><span style=\"color: #3366ff;\"><a style=\"color: #3366ff;\" href=\"https:\/\/fastbitlab.com\/course1\">https:\/\/fastbitlab.com\/course1<\/a><\/span><\/p>\n<\/div>\n<p class=\"\">&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Implementation of I2C master sending data API:Part 5 &nbsp; &nbsp; Testing I2C MasterSendData() API: Before testing the code, build the code to check whether we encounter any error or not. Save the file. Right-click on the project and select the build project option to build the project. There are a couple of errors, as [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4182,"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":[23],"class_list":["post-4179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-stm32-i2c-lectures","entry","has-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Testing and Debugging I2C MasterSendData() API Implementation<\/title>\n<meta name=\"description\" content=\"Learn how to test the I2C MasterSendData() API &amp; troubleshoot common errors during the code compilation process. 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