{"id":264,"date":"2021-04-23T15:20:51","date_gmt":"2021-04-23T07:20:51","guid":{"rendered":"https:\/\/blogs.gongqilin.cn\/?p=264"},"modified":"2021-04-23T15:21:29","modified_gmt":"2021-04-23T07:21:29","slug":"ucos-iii%e5%ae%9e%e7%8e%b0%e7%9a%84%e5%85%a8%e5%b1%80%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/blogs.gongqilin.cn\/?p=264","title":{"rendered":"ucos-iii\u5b9e\u73b0\u7684\u5168\u5c40\u53d8\u91cf"},"content":{"rendered":"<p>\u901a\u5e38\u6211\u4eec\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf\u7684\u505a\u6cd5\u90fd\u662f\u5728.C\u6587\u4ef6\u91cc\u9762\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf\uff0c\u7136\u540e\u5728\u8fd9\u4e2a\u6587\u4ef6\u5bf9\u5e94\u7684\u5934\u6587\u4ef6\u91cc\u9762\u52a0 extern \u58f0\u660e\uff0c\u5728\u5916\u90e8\u6587\u4ef6\u8c03\u7528\u7684\u65f6\u5019\uff0c\u5305\u542b\u5176\u5934\u6587\u4ef6\uff0c\u52a0\u5165\u5168\u5c40\u53d8\u91cf\u7684\u58f0\u660e\uff08\u4e0d\u52a0\u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u6700\u597d\u52a0\u4e0a\uff0c\u5305\u542b<br \/>\n.h\u6587\u4ef6\u7684\u65f6\u5019\u5df2\u7ecf\u628a\u58f0\u660e\u52a0\u5165\u4e86\uff09<\/p>\n<pre class=\"prettyprint linenums\">\/\/test.c\r\nint a;\r\n\r\n\/\/test.h\r\nextern\u00a0 int\u00a0 a;\r\n\r\n\/\/main.c\r\n#include &quot;test.h&quot;\r\nextern int a;\r\nint\u00a0 main()\r\n{\r\n\u00a0\u00a0\u00a0 pirntf(&quot;a = %d\\n&quot;, a);\r\n}\r\n<\/pre>\n<p>\u4f46\u662f uC\/OS-III \u4e2d\uff0c\u6587\u4ef6\u975e\u5e38\u591a\uff0c\u8fd9\u79cd\u65b9\u6cd5\u53ef\u884c\uff0c\u4f46\u4e0d\u73b0\u5b9e\u3002\u56e0\u6b64ucos-iii\u4f7f\u7528\u4e86\u4e00\u79cd\u6bd4\u8f83\u5de7\u5999\u7684\u65b9\u5f0f\u53bb\u5b9e\u73b0\u5728\u5934\u6587\u4ef6\u4e2d\u5b9a\u4e49\u53d8\u91cf\u3002\u5728 os.h \u5934\u6587\u4ef6\u4e2d\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf\uff0c\u7136\u540e\u5728 os.h \u6587\u4ef6\u7684\u5f00\u5934\u52a0\u4e0a\u5982\u4e0b\u4ee3\u7801\u6bb5<\/p>\n<pre class=\"prettyprint linenums\">#ifdef OS_GLOBALS\r\n    #define OS_EXT\r\n#else\r\n    #define OS_EXT extern\r\n#endif\r\n<\/pre>\n<p>\u5e76\u53e6\u5916\u65b0\u5efa\u4e86\u4e00\u4e2a os_var.c\u5728\u91cc\u9762\u5305\u542b os.h\uff0c\u4e14\u53ea\u5728\u8fd9\u4e2a\u6587\u4ef6\u91cc\u9762\u5b9a\u4e49 OS_GLOBALS \u8fd9\u4e2a\u5b8f<\/p>\n<pre class=\"prettyprint linenums\">#define OS_GLOBALS\r\n#include &quot;os.h&quot;\r\n<\/pre>\n<p>\u7ecf\u8fc7\u8fd9\u6837\u5904\u7406\u4e4b\u540e\uff0c\u5728\u7f16\u8bd1\u6574\u4e2a\u5de5\u7a0b\u7684\u65f6\u5019\uff0c\u53ea\u6709 var.c \u91cc\u9762\u7684 os.h \u7684 OS_EXTI \u624d\u4f1a\u88ab\u66ff\u6362\u4e3a\u7a7a\uff0c\u5373\u53d8\u91cf\u7684\u5b9a\u4e49\uff0c\u5176\u5b83\u5305\u542b os.h \u7684\u6587\u4ef6\u56e0\u4e3a\u6ca1\u6709\u5b9a\u4e49 OS_GLOBAS \u8fd9\u4e2a\u5b8f\uff0c\u5219OS_EXTI \u4f1a\u88ab\u66ff\u6362\u6210 extern\uff0c\u5373\u53d8\u6210\u4e86\u53d8\u91cf\u7684\u58f0\u660e\u3002\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86\u5728\u5934\u6587\u4ef6\u4e2d\u5b9a\u4e49\u53d8\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u901a\u5e38\u6211\u4eec\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf\u7684\u505a\u6cd5\u90fd\u662f\u5728.C\u6587\u4ef6\u91cc\u9762\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf\uff0c\u7136\u540e\u5728\u8fd9\u4e2a\u6587\u4ef6\u5bf9\u5e94\u7684\u5934\u6587\u4ef6\u91cc\u9762\u52a0 extern \u58f0\u660e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[17],"class_list":["post-264","post","type-post","status-publish","format-standard","hentry","category-ucos","tag-17"],"_links":{"self":[{"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=\/wp\/v2\/posts\/264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=264"}],"version-history":[{"count":2,"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=\/wp\/v2\/posts\/264\/revisions"}],"predecessor-version":[{"id":266,"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=\/wp\/v2\/posts\/264\/revisions\/266"}],"wp:attachment":[{"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.gongqilin.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}