{"id":60628,"date":"2023-10-26T22:26:50","date_gmt":"2023-10-26T14:26:50","guid":{"rendered":"\/\/www.viralrail.com\/?p=60628"},"modified":"2023-10-26T22:26:50","modified_gmt":"2023-10-26T14:26:50","slug":"uhsyf","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/60628.html","title":{"rendered":"usart_receivedata\u51fd\u6570\u7528\u6cd5"},"content":{"rendered":"<p>&emsp;&emsp;<strong>usart_receivedata\u51fd\u6570\u662f\u4e00\u79cdC\u8bed\u8a00\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u6765\u4ece\u4e32\u53e3\u8bbe\u5907\u63a5\u6536\u6570\u636e\u3002<\/strong>\u5b83\u53ef\u4ee5\u88ab\u7528\u6765\u5b9e\u73b0\u4ece\u4e32\u53e3\u8bbe\u5907\u63a5\u6536\u5b57\u7b26\u4e32\u3001\u5b57\u8282\u3001\u6574\u6570\u7b49\u6570\u636e\u7c7b\u578b\u3002\u5b83\u7684\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<h2 style=\"text-align: center;\">\u51fd\u6570\u539f\u578b<\/h2>\n<p>&emsp;&emsp;usart_receivedata\u51fd\u6570\u7684\u51fd\u6570\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n<pre><code>int usart_receivedata(int fd, void *data, int size);<\/code><\/pre>\n<p>&emsp;&emsp;\u5176\u4e2d\uff0cfd\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\uff1bdata\u662f\u6307\u5411\u63a5\u6536\u6570\u636e\u7684\u6307\u9488\uff1bsize\u662f\u63a5\u6536\u6570\u636e\u7684\u5927\u5c0f\u3002<\/p>\n<h2 style=\"text-align: center;\">\u51fd\u6570\u53c2\u6570<\/h2>\n<h3>&emsp;&emsp;fd<\/h3>\n<p>&emsp;&emsp;fd\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5b83\u662f\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u4e32\u53e3\u8bbe\u5907\u7684\u6587\u4ef6\u53e5\u67c4\u3002\u5728\u4f7f\u7528usart_receivedata\u51fd\u6570\u4e4b\u524d\uff0c\u5fc5\u987b\u5148\u6253\u5f00\u4e32\u53e3\u8bbe\u5907\uff0c\u5e76\u83b7\u53d6\u6587\u4ef6\u53e5\u67c4\u3002<\/p>\n<h3>&emsp;&emsp;data<\/h3>\n<p>&emsp;&emsp;data\u662f\u6307\u5411\u63a5\u6536\u6570\u636e\u7684\u6307\u9488\uff0c\u5b83\u53ef\u4ee5\u6307\u5411\u4efb\u610f\u6570\u636e\u7c7b\u578b\uff0c\u4f8b\u5982\u5b57\u7b26\u4e32\u3001\u5b57\u8282\u3001\u6574\u6570\u7b49\u3002<\/p>\n<h3>&emsp;&emsp;size<\/h3>\n<p>&emsp;&emsp;size\u662f\u63a5\u6536\u6570\u636e\u7684\u5927\u5c0f\uff0c\u5b83\u662f\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u63a5\u6536\u6570\u636e\u7684\u5b57\u8282\u6570\uff0c\u4e5f\u53ef\u4ee5\u8868\u793a\u63a5\u6536\u6570\u636e\u7684\u957f\u5ea6\u3002<\/p>\n<h2 style=\"text-align: center;\">\u51fd\u6570\u8fd4\u56de\u503c<\/h2>\n<p>&emsp;&emsp;usart_receivedata\u51fd\u6570\u7684\u8fd4\u56de\u503c\u662f\u63a5\u6536\u7684\u5b57\u8282\u6570\uff0c\u5982\u679c\u63a5\u6536\u5931\u8d25\uff0c\u5219\u8fd4\u56de-1\u3002<\/p>\n<h2 style=\"text-align: center;\">\u603b\u7ed3<\/h2>\n<p>&emsp;&emsp;<strong>usart_receivedata\u51fd\u6570\u662f\u4e00\u79cdC\u8bed\u8a00\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u6765\u4ece\u4e32\u53e3\u8bbe\u5907\u63a5\u6536\u6570\u636e\u3002<\/strong>\u5b83\u7684\u51fd\u6570\u539f\u578b\u4e3a\uff1aint usart_receivedata(int fd, void *data, int size)\uff0c\u5176\u4e2d\uff0cfd\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\uff1bdata\u662f\u6307\u5411\u63a5\u6536\u6570\u636e\u7684\u6307\u9488\uff1bsize\u662f\u63a5\u6536\u6570\u636e\u7684\u5927\u5c0f\u3002\u5b83\u7684\u8fd4\u56de\u503c\u662f\u63a5\u6536\u7684\u5b57\u8282\u6570\uff0c\u5982\u679c\u63a5\u6536\u5931\u8d25\uff0c\u5219\u8fd4\u56de-1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>usart_receivedata\u51fd\u6570\u662f\u4e00\u79cdC\u8bed\u8a00\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u6765\u4ece\u4e32\u53e3\u8bbe\u5907\u63a5\u6536\u6570\u636e\u3002\u5b83\u53ef\u4ee5\u88ab\u7528\u6765\u5b9e\u73b0\u4ece\u4e32\u53e3\u8bbe\u5907\u63a5\u6536\u5b57\u7b26\u4e32\u3001\u5b57\u8282\u3001\u6574\u6570\u7b49\u6570<\/p>\n","protected":false},"author":1,"featured_media":1839,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[305],"class_list":["post-60628","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzjs"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/60628"}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=60628"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/60628\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/1839"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=60628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=60628"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=60628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}