{"id":1287,"date":"2023-08-11T10:18:07","date_gmt":"2023-08-11T10:18:07","guid":{"rendered":"http:\/\/www.recologypower.com:9080\/?p=1287"},"modified":"2023-08-11T10:18:08","modified_gmt":"2023-08-11T10:18:08","slug":"%e3%80%90uboot%e3%80%91%e9%80%9a%e8%bf%87uboot%e6%8c%87%e4%bb%a4%e5%ae%9e%e7%8e%b0gpio%e6%8e%a7%e5%88%b6","status":"publish","type":"post","link":"http:\/\/www.recologypower.com:9080\/?p=1287","title":{"rendered":"\u3010uboot\u3011\u901a\u8fc7uboot\u6307\u4ee4\u5b9e\u73b0GPIO\u63a7\u5236"},"content":{"rendered":"\n<p><strong>\u4e00\uff1a\u5728uboot\u4e0b\u7684defconfig \u6253\u5f00\u5982\u4e0b\u914d\u7f6e<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CONFIG_DM=y\r\nCONFIG_DM_GPIO=y\r\nCONFIG_DWAPB_GPIO=y\r\nCONFIG_CMD_GPIO=y<\/code><\/pre>\n\n\n\n<p><strong>\u4e8c\uff1a\u91cd\u65b0\u7f16\u8bd1u-boot\u540e\u4f1a\u751f\u6210cmd\uff1agpio<\/strong><\/p>\n\n\n\n<p>\uff08\u677f\u5b50\u4e0a\u7535\u65f6\u8fde\u7eed\u6309\u56de\u8f66\u952e\uff09\u8fdb\u5165\u5230\u677f\u7aefuboot cmdline\u4e0b\u6267\u884c&#8221; gpio status -a &#8221; \u67e5\u770b\u677f\u7aef\u5bf9\u5e94\u7684gpio numbe<\/p>\n\n\n\n<p><strong>\u4e09\uff1a\u5229\u7528 uboot gpio \u547d\u4ee4\u64cd\u4f5cGPIO \u505a\u6d4b\u8bd5<\/strong><\/p>\n\n\n\n<ul><li>gpio c 0 ; \u5c06\u7b2c0\u6839PIN\u6e05\u96f6\uff08\u62c9\u4f4e\uff09<\/li><li>gpio s 0 ; \u5c06\u7b2c0\u6839PIN\u8bbe\u4e3aoutput\u540c\u65f6\u62c9\u9ad8<\/li><\/ul>\n\n\n\n<p><strong>\u56db\uff1agpio \u64cd\u4f5cdemo<\/strong><\/p>\n\n\n\n<p>\u76f4\u63a5\u4ee5\u4e0bdemo code\u6dfb\u52a0\u5230uboot\/cmd\u8def\u5f84\u4e0b\uff0c\u518d\u5728uboot\/cmd\/Makefile\u4e2d\u6dfb\u52a0\u7f16\u8bd1\u9009\u9879\uff0c\u7f16\u8bd1\u5b8c\u6210\u540e\u53ef\u4ee5\u76f4\u63a5\u64cd\u4f5cgpio<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;command.h>\r\n#include &lt;linux\/string.h>\r\n#include &lt;linux\/kernel.h>\r\n#include &lt;linux\/delay.h>\r\n#include &lt;asm\/gpio.h>\r\n\r\nint do_gpio_test(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv&#91;])\r\n{\r\n    if (argc &lt; 2) {\r\n        printf(\"usage: gpio_test &#91;requ\/out\/on\/off]\\n\");\r\n        return 0;\r\n    }\r\n\r\n    if (strcmp(\"requ\", argv&#91;1]) == 0) {\r\n        gpio_request(126, \"ir_a\");\r\n        gpio_request(127, \"ir_b\");\r\n        mdelay(10);\r\n    } else if (strcmp(\"out\", argv&#91;1]) == 0) {\r\n        gpio_direction_output(126, 1);\r\n        gpio_direction_output(127, 1);\r\n        mdelay(10);\r\n    } else if (strcmp(\"on\", argv&#91;1]) == 0) {\r\n        gpio_set_value(126, 0);\r\n        gpio_set_value(127, 1);\r\n        mdelay(100);\r\n        gpio_set_value(126, 1);\r\n        gpio_set_value(127, 1);\r\n    } else if (strcmp(\"off\", argv&#91;1]) == 0) {\r\n        gpio_set_value(126, 1);\r\n        gpio_set_value(127, 0);\r\n        mdelay(100);\r\n        gpio_set_value(126, 1);\r\n        gpio_set_value(127, 1);\r\n    }\r\n\r\n    return 0;\r\n}\r\n\r\nU_BOOT_CMD(\r\n    gpio_test, 4, 1, do_gpio_test,\r\n    \"u-boot gpio cmd test\",\r\n    \"gpio - just for test\\n\"\r\n);<\/code><\/pre>\n\n\n\n<p>\u4e94\u3001\u6d4b\u8bd5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7f16\u8bd1\u5b8c\u6210\u5347\u7ea7\u540e\uff0c\u8fdb\u5165\u5230uboot\u4f1a\u6709gpio_test\u547d\u4ee4\r\ngpio_test requ\r\n\u521d\u59cb\u5316gpio\r\ngpio_test out\r\n\u8bbe\u7f6egpio direction\r\ngpio_test on\r\n\u8bbe\u7f6e ir_cur (\u7684\u4e24\u6839PIN) \u72b6\u6001<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<div class=\"slide-text-bg2\">\n<h3>\u4e00\uff1a\u5728uboot\u4e0b\u7684defconfig <\/h3>\n<\/div>\n<div class=\"flex-btn-div\"><a href=\"http:\/\/www.recologypower.com:9080\/?p=1287\" class=\"btn1 flex-btn\">\u9605\u8bfb\u66f4\u591a<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[137],"tags":[],"_links":{"self":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1287"}],"collection":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1287"}],"version-history":[{"count":1,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1287\/revisions"}],"predecessor-version":[{"id":1288,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1287\/revisions\/1288"}],"wp:attachment":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1287"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}