{"id":1307,"date":"2024-04-19T10:03:00","date_gmt":"2024-04-19T02:03:00","guid":{"rendered":"https:\/\/xujiwei.com\/blog\/?p=1307"},"modified":"2024-04-28T23:03:53","modified_gmt":"2024-04-28T15:03:53","slug":"diy-usb-meter-read-ina219","status":"publish","type":"post","link":"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/","title":{"rendered":"DIY USB \u7535\u6d41\u8868\uff087\uff09\uff1a\u8bfb\u53d6\u548c\u663e\u793a INA219 \u7535\u6d41\u7535\u538b\u6570\u636e"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69d84572d78e0\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" 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href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%87%86%E5%A4%87%E5%B7%A5%E4%BD%9C\" title=\"\u51c6\u5907\u5de5\u4f5c\">\u51c6\u5907\u5de5\u4f5c<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#I2C_%E8%AF%BB%E5%8F%96%E6%96%B9%E6%B3%95\" title=\"I2C \u8bfb\u53d6\u65b9\u6cd5\">I2C \u8bfb\u53d6\u65b9\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#INA219_%E9%A9%B1%E5%8A%A8%E9%80%82%E9%85%8D\" title=\"INA219 \u9a71\u52a8\u9002\u914d\">INA219 \u9a71\u52a8\u9002\u914d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E8%8E%B7%E5%8F%96%E7%B3%BB%E7%BB%9F%E8%BF%90%E8%A1%8C%E6%97%B6%E9%97%B4\" title=\"\u83b7\u53d6\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\">\u83b7\u53d6\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E8%AF%BB%E5%8F%96_INA219_%E6%95%B0%E6%8D%AE%E5%B9%B6%E6%98%BE%E7%A4%BA\" title=\"\u8bfb\u53d6 INA219 \u6570\u636e\u5e76\u663e\u793a\">\u8bfb\u53d6 INA219 \u6570\u636e\u5e76\u663e\u793a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%AE%9A%E4%B9%89%E6%95%B0%E6%8D%AE%E5%AD%98%E5%82%A8%E5%8F%98%E9%87%8F\" title=\"\u5b9a\u4e49\u6570\u636e\u5b58\u50a8\u53d8\u91cf\">\u5b9a\u4e49\u6570\u636e\u5b58\u50a8\u53d8\u91cf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%88%9D%E5%A7%8B%E5%8C%96_INA219_%E9%A9%B1%E5%8A%A8\" title=\"\u521d\u59cb\u5316 INA219 \u9a71\u52a8\">\u521d\u59cb\u5316 INA219 \u9a71\u52a8<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E8%AF%BB%E5%8F%96%E6%95%B0%E6%8D%AE%E5%B9%B6%E8%AE%A1%E7%AE%97%E5%8A%9F%E7%8E%87%E3%80%81%E7%94%B5%E9%87%8F\" title=\"\u8bfb\u53d6\u6570\u636e\u5e76\u8ba1\u7b97\u529f\u7387\u3001\u7535\u91cf\">\u8bfb\u53d6\u6570\u636e\u5e76\u8ba1\u7b97\u529f\u7387\u3001\u7535\u91cf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E6%98%BE%E7%A4%BA%E6%95%B0%E6%8D%AE\" title=\"\u663e\u793a\u6570\u636e\">\u663e\u793a\u6570\u636e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E6%8C%81%E7%BB%AD%E6%9B%B4%E6%96%B0%E6%95%B0%E6%8D%AE\" title=\"\u6301\u7eed\u66f4\u65b0\u6570\u636e\">\u6301\u7eed\u66f4\u65b0\u6570\u636e<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%AE%9E%E9%99%85%E8%BF%90%E8%A1%8C%E6%95%88%E6%9E%9C\" title=\"\u5b9e\u9645\u8fd0\u884c\u6548\u679c\">\u5b9e\u9645\u8fd0\u884c\u6548\u679c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%B0%8F%E7%BB%93\" title=\"\u5c0f\u7ed3\">\u5c0f\u7ed3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#USB_%E7%94%B5%E6%B5%81%E8%A1%A8%E5%BC%80%E6%BA%90%E5%9C%B0%E5%9D%80\" title=\"USB \u7535\u6d41\u8868\u5f00\u6e90\u5730\u5740\">USB \u7535\u6d41\u8868\u5f00\u6e90\u5730\u5740<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#DIY_USB_%E7%94%B5%E6%B5%81%E8%A1%A8%E7%B3%BB%E5%88%97\" title=\"DIY USB \u7535\u6d41\u8868\u7cfb\u5217\">DIY USB \u7535\u6d41\u8868\u7cfb\u5217<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%85%B6%E4%BB%96_DIY_%E9%A1%B9%E7%9B%AE\" title=\"\u5176\u4ed6 DIY \u9879\u76ee\">\u5176\u4ed6 DIY \u9879\u76ee<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#30_%E5%85%83_DIY_%E4%B8%80%E4%B8%AA%E6%9F%94%E6%80%A7%E7%81%AF%E4%B8%9D%E6%B0%9B%E5%9B%B4%E7%81%AF\" title=\"30 \u5143 DIY \u4e00\u4e2a\u67d4\u6027\u706f\u4e1d\u6c1b\u56f4\u706f\">30 \u5143 DIY \u4e00\u4e2a\u67d4\u6027\u706f\u4e1d\u6c1b\u56f4\u706f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\" title=\"\u53c2\u8003\u8d44\u6599\">\u53c2\u8003\u8d44\u6599<\/a><\/li><\/ul><\/nav><\/div>\n<p>\u5728\u524d\u4e00\u7bc7 <a href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-oled-display\/\">\u300aDIY USB \u7535\u6d41\u8868\uff086\uff09\uff1a\u70b9\u4e2a\u5c4f\uff0c\u4f7f\u7528 I2C \u9a71\u52a8 0.96 \u5bf8 OLED\u300b<\/a> \u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86\u5c4f\u5e55\u663e\u793a\u9a71\u52a8\u7684\u5f00\u53d1\uff0c\u5e76\u4e14\u6839\u636e\u9700\u6c42\uff0c\u5217\u51fa\u4e86\u9700\u8981\u5c55\u793a\u7684\u6570\u636e\u9879\uff0c\u786e\u5b9a\u4e86\u4e00\u4e0b\u6700\u7ec8\u663e\u793a\u5185\u5bb9\u7684\u5e03\u5c40\u3002<\/p>\n<p>\u5728\u4e4b\u524d\uff0c\u663e\u793a\u7684\u5185\u5bb9\u90fd\u662f\u5360\u4f4d\u7684\u6d4b\u8bd5\u6570\u636e\uff0c\u5728\u8fd9\u4e00\u8282\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u771f\u6b63\u53bb\u8bfb\u53d6 INA219 \u4f20\u611f\u5668\u7684\u6570\u636e\uff0c\u5c06\u7535\u8def\u4e2d\u6d4b\u91cf\u7684\u7535\u538b\u3001\u7535\u6d41\u7b49\u6570\u636e\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u8fd9\u53c8\u662f\u4e00\u8282\u67af\u71e5\u7684\u7f16\u7801\u5de5\u4f5c \ud83d\ude48\u3002<\/p>\n<p>PS. \u6211\u4e5f\u8fd8\u662f\u4e00\u4e2a\u521d\u5b66\u8005\uff0c\u5982\u679c\u6587\u7ae0\u4e2d\u6709\u4e00\u4e9b\u9519\u8bef\u6216\u4e0d\u8db3\uff0c\u8fd8\u8bf7\u591a\u591a\u6307\u6559\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%87%86%E5%A4%87%E5%B7%A5%E4%BD%9C\"><\/span>\u51c6\u5907\u5de5\u4f5c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u5f00\u59cb\u8bfb\u53d6 INA219 \u7684\u6570\u636e\u4e4b\u524d\uff0c\u540c\u6837\u4e5f\u8981\u51c6\u5907\u4e00\u4e9b\u76f8\u5173\u7684\u5e93\uff0c\u4f8b\u5982 INA219 \u6570\u636e\u7684\u8bfb\u53d6\u3001\u53c2\u6570\u7684\u914d\u7f6e\uff0c\u4ee5\u53ca\u5728 CH32V003-GameConsole \u4e2d\u6240\u4f7f\u7528\u7684 I2C \u5c01\u88c5\u5e76\u672a\u63d0\u4f9b\u8bfb\u53d6 I2C \u6570\u636e\u65b9\u6cd5\uff0c\u53e6\u5916\uff0c\u4e3a\u4e86\u8ba1\u7b97 USB \u7535\u6d41\u8868\u8fd0\u884c\u65f6\u95f4\u5185\u6d88\u8017\u7684\u7535\u91cf\uff0c\u4e5f\u9700\u8981\u6709\u76f8\u5173\u7684\u8ba1\u65f6\u65b9\u6cd5\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"I2C_%E8%AF%BB%E5%8F%96%E6%96%B9%E6%B3%95\"><\/span>I2C \u8bfb\u53d6\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5728 CH32V003-GameConsole \u7684\u4ee3\u7801\u4e2d\uff0c\u5df2\u7ecf\u6709\u4e86 <code>i2c_tx.h<\/code>\uff0c\u63d0\u4f9b\u4e86 I2C \u5199\u5165\u76f8\u5173\u7684\u65b9\u6cd5\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u6e38\u620f\u673a\u6765\u8bf4\uff0c\u62e5\u6709\u5199\u5165\u65b9\u6cd5\u5c31\u8db3\u591f\u4e86\uff0c\u5b83\u53ea\u9700\u8981\u7528 I2C \u6765\u5237\u65b0\u5c4f\u5e55\uff0c\u4f46\u662f\u5728\u6211\u4eec\u7684 USB \u7535\u6d41\u8868\u9879\u76ee\u4e2d\uff0c\u8fd8\u9700\u8981\u4f7f\u7528 I2C \u53bb\u8bfb\u53d6 INA219 \u7684\u6570\u636e\uff0c\u56e0\u6b64\u9700\u8981\u53bb\u5c01\u88c5\u4e00\u4e2a I2C \u8bfb\u53d6\u65b9\u6cd5\u3002<\/p>\n<p>\u5728\u5f00\u59cb\u7f16\u5199 I2C \u8bfb\u53d6\u65b9\u6cd5\u4e4b\u524d\uff0c\u5148\u5c06 <code>i2c_tx.c<\/code> \u6587\u4ef6\u4e2d\u521d\u59cb\u5316 I2C \u63a7\u5236\u5668\u7684\u4ee3\u7801\u4fee\u6539\u4e00\u4e0b\uff0c\u542f\u7528\u81ea\u52a8\u53d1\u9001 ACK \u7684\u6807\u5fd7\u4f4d\uff0c\u9632\u6b62\u540e\u7eed\u8bfb\u53d6\u5931\u8d25\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2024\/04\/diy-usb-meter-7-1.png\" alt=\"diy-usb-meter-7-1\" style=\"zoom:50%;\" \/><\/p>\n<p>\u914d\u7f6e\u5b8c\u540e\uff0c\u5728 <code>i2c_tx.h<\/code> \u4e2d\u6dfb\u52a0 I2C \u8bfb\u53d6\u76f8\u5173\u65b9\u6cd5\u7684\u5b9a\u4e49\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u5f00\u59cb\u8bfb\u53d6 I2C \u6570\u636e\nvoid I2C_start_read(uint8_t addr);\n\/\/ \u4ece I2C \u603b\u7ebf\u8bfb\u53d6 1 \u4e2a\u5b57\u8282\nuint8_t I2C_read();\n\/\/ \u505c\u6b62\u8bfb\u53d6 I2C \u6570\u636e\nvoid I2C_read_stop(void);<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\u5b8c\u6210\u76f8\u5173 I2C \u8bfb\u53d6\u65b9\u6cd5\u7684\u7f16\u5199\uff0c\u5728 <code>i2c_tx.c<\/code> \u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-c\">\/\/ \u6839\u636e\u5730\u5740\u8bbe\u7f6e\u5199\u5165\u6807\u5fd7\u4f4d\n#define OADDR1_ADD0_Set          ((uint8_t)0x01)\n\/\/ I2C \u63a7\u5236\u5668\u8bfb\u53d6\u72b6\u6001\n#define I2C_RECV_MODE_SELECTED  ((uint32_t)0x00020003)  \/* BUSY, MSL and ADDR flags *\/\n\nvoid I2C_start_read(uint8_t addr) {\n    addr |= OADDR1_ADD0_Set;\n\n    while(I2C1-&gt;STAR2 &amp; I2C_STAR2_BUSY);            \/\/ wait until bus ready\n    I2C1-&gt;CTLR1 |= I2C_CTLR1_START;                 \/\/ set START condition\n    while(!(I2C1-&gt;STAR1 &amp; I2C_STAR1_SB));           \/\/ wait for START generated\n    I2C1-&gt;DATAR = addr;                             \/\/ send slave address + R\/W bit\n    while(!I2C_checkEvent(I2C_RECV_MODE_SELECTED));   \/\/ wait for address transmitted\n}\n\nuint8_t I2C_read() {\n    while (!(I2C1-&gt;STAR1 &amp; I2C_STAR1_RXNE));\n    return I2C1-&gt;DATAR;\n}\n\nvoid I2C_read_stop(void) {\n  while(!(I2C1-&gt;STAR1 &amp; I2C_STAR1_RXNE));          \/\/ wait for last byte transmitted\n  I2C1-&gt;CTLR1 |= I2C_CTLR1_STOP;                  \/\/ set STOP condition\n}<\/code><\/pre>\n<p>\u5b8c\u6210\u8fd9\u4e9b\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u9002\u914d\u4e00\u4e0b INA219 \u7684\u9a71\u52a8\u5230 CH32V003 \u4e0a\u4e86\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"INA219_%E9%A9%B1%E5%8A%A8%E9%80%82%E9%85%8D\"><\/span>INA219 \u9a71\u52a8\u9002\u914d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>INA219 \u7684\u9a71\u52a8\uff0c\u6211\u4f7f\u7528\u4e86\u4e00\u4e2a\u4e4b\u524d\u5728 ESP32 \u4e0a\u4f7f\u7528\u7684\u5e93 INA219_WE\uff0c\u5c06\u5b83\u7a0d\u5fae\u53d8\u5316\u4e00\u4e0b\uff0c\u9002\u914d\u5230 CH32V003 \u4e0a\u6765\u4f7f\u7528\u3002<\/p>\n<p>\u9879\u76ee\u5730\u5740\uff1a<a href=\"https:\/\/github.com\/wollewald\/INA219_WE\">https:\/\/github.com\/wollewald\/INA219_WE<\/a><\/p>\n<p>\u5c06\u9879\u76ee\u4ee3\u7801\u4e0b\u8f7d\u4e0b\u6765\u4e4b\u540e\uff0c\u6211\u4eec\u53ea\u9700\u8981\u4f7f\u7528 <code>INA219_WE.h<\/code> \u548c <code>INA219_WE.cpp<\/code> \u4e24\u4e2a\u6587\u4ef6\uff0c\u5c06\u5b83\u4eec\u590d\u5236\u5230 USB \u7535\u6d41\u8868\u56fa\u4ef6\u9879\u76ee\u7684 <code>src\/drivers<\/code> \u76ee\u5f55\u4e2d\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u7684\u9002\u914d\u5de5\u4f5c\uff0c\u4e3b\u8981\u53d8\u66f4\u7684\u6709\u4ee5\u4e0b\u51e0\u4e2a\u5730\u65b9\uff1a<\/p>\n<ul>\n<li>\u53bb\u9664 Arduino \u76f8\u5173\u7684\u5934\u6587\u4ef6<\/li>\n<li>\u6784\u9020\u65b9\u6cd5\u4ec5\u4fdd\u7559\u4e00\u4e2a\u4f20\u5165 I2C \u5730\u5740\u7684\u65b9\u6cd5<\/li>\n<li>\u8865\u5168\u7f3a\u5931\u7684 Arduino \u4e2d\u76f8\u5173\u65b9\u6cd5<\/li>\n<li>\u5c06 <code>writeRegister<\/code> \u548c <code>readRegister<\/code> \u9002\u914d\u4e3a <code>i2c_tx.c<\/code> \u4e2d\u7684\u76f8\u5173\u65b9\u6cd5<\/li>\n<\/ul>\n<p>\u524d\u9762\u4e24\u70b9\u6bd4\u8f83\u597d\u4fee\u6539\uff0c\u5728 <code>INA219_WE.h<\/code> \u4e2d\u5220\u9664\u5bf9\u5e94\u7684\u4ee3\u7801\u5c31\u53ef\u4ee5\uff0c\u5c31\u4e0d\u591a\u8d58\u8ff0\uff0c\u63a5\u4e0b\u6765\u7684\u4fee\u6539\u90fd\u5728 <code>INA219_WE.cpp<\/code> \u4e2d\u5b8c\u6210\u3002<\/p>\n<p><strong>\u6dfb\u52a0\u5934\u6587\u4ef6\u548c\u7f3a\u5931\u5b9a\u4e49<\/strong><\/p>\n<p>\u56e0\u4e3a\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u9879\u76ee\u4e2d\u6ca1\u6709 byte \u7c7b\u578b\u3001abs\u3001delayMicroseconds \u8fd9\u4e09\u4e2a\u7684\u5b9a\u4e49\uff0c\u56e0\u6b64\u9700\u8981\u63d0\u4f9b\u5b9a\u4e49\u4e00\u4e0b\u3002<\/p>\n<pre><code class=\"language-c\">#include &lt;debug.h&gt;\n#include &quot;i2c_tx.h&quot;\n\n#define byte uint8_t\n#define abs(v) (v &gt; 0 ? v : -v)\n#define delayMicroseconds(ms) Delay_Ms(ms)<\/code><\/pre>\n<p><strong>\u9002\u914d wrigeRegister \u548c readRegister<\/strong><\/p>\n<p>\u5c06\u539f\u4ee3\u7801\u4e2d\u7684\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u66ff\u6362\u6210\u4ee5\u4e0b\u5185\u5bb9\uff0c\u4e3b\u8981\u662f\u5c06 Wire \u76f8\u5173\u7684\u8c03\u7528\uff0c\u66ff\u6362\u6210 <code>i2c_tx.h<\/code> \u4e2d\u76f8\u5173\u65b9\u6cd5\u7684\u8c03\u7528\uff1a<\/p>\n<pre><code class=\"language-c\">uint8_t INA219_WE::writeRegister(uint8_t reg, uint16_t val){\n    I2C_start(i2cAddress);\n    uint8_t lVal = val &amp; 255;\n    uint8_t hVal = val &gt;&gt; 8;\n    I2C_write(reg);\n    I2C_write(hVal);\n    I2C_write(lVal);\n    I2C_stop();\n    return 0;\n}\n\nuint16_t INA219_WE::readRegister(uint8_t reg){\n    uint8_t MSByte = 0, LSByte = 0;\n    uint16_t regValue = 0;\n\n    I2C_start(i2cAddress);\n    I2C_write(reg);\n    I2C_stop();\n\n    I2C_start_read(i2cAddress);\n    MSByte = I2C_read();\n    LSByte = I2C_read();\n    I2C_read_stop();\n\n    regValue = (MSByte&lt;&lt;8) + LSByte;\n    return regValue;\n}<\/code><\/pre>\n<p>\u8fd9\u6837\u5c31\u5b8c\u6210\u4e86 INA219 \u9a71\u52a8\u7684\u9002\u914d\uff0c\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7 INA219_WE \u7684\u7c7b\u6765\u8bfb\u53d6 INA219 \u4f20\u611f\u5668\u6570\u636e\u4e86\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%8E%B7%E5%8F%96%E7%B3%BB%E7%BB%9F%E8%BF%90%E8%A1%8C%E6%97%B6%E9%97%B4\"><\/span>\u83b7\u53d6\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e3a\u4e86\u8ba1\u7b97 USB \u7535\u6d41\u8868\u7edf\u8ba1\u7684\u7535\u91cf\uff0c\u9664\u4e86\u529f\u7387\u4e4b\u540e\uff0c\u8fd8\u9700\u8981\u8fd0\u884c\u5bf9\u5e94\u529f\u7387\u7684\u65f6\u95f4\uff0c\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cCH32V003 SDK \u5e76\u672a\u63d0\u4f9b\u7c7b\u4f3c Arduino \u4e2d <code>millis()<\/code> \u8fd9\u6837\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u989d\u5916\u7f16\u5199\u4e00\u4e2a\u65b9\u6cd5\u7528\u6765\u83b7\u53d6\u8fd0\u884c\u65f6\u95f4\u3002<\/p>\n<p>\u8fd9\u4e2a\u53ef\u4ee5\u4ece <code>arduino_core_ch32<\/code> \u9879\u76ee\u4e2d\u83b7\u53d6\u5b9e\u73b0\uff0c\u57fa\u4e8e\u7cfb\u7edf\u7684 Tick \u4e2d\u65ad\u8ba1\u6570\u6765\u5b9e\u73b0\u8fd0\u884c\u65f6\u95f4\u7684\u7edf\u8ba1\u3002<\/p>\n<p>\u4ee3\u7801\u5730\u5740\uff1a<a href=\"https:\/\/github.com\/Community-PIO-CH32V\/arduino_core_ch32\/blob\/main\/cores\/arduino\/ch32\/clock.c\">https:\/\/github.com\/Community-PIO-CH32V\/arduino_core_ch32\/blob\/main\/cores\/arduino\/ch32\/clock.c<\/a><\/p>\n<pre><code class=\"language-c\">void systick_init(void)\n{\n    SysTick-&gt;SR  = 0;\n    SysTick-&gt;CTLR= 0;\n    SysTick-&gt;CNT = 0;\n    SysTick-&gt;CMP = SystemCoreClock \/ 1000 - 1;\n    SysTick-&gt;CTLR= 0xF;\n    NVIC_SetPriority(SysTicK_IRQn,0xFF);\n    NVIC_EnableIRQ(SysTicK_IRQn);\n}<\/code><\/pre>\n<p>\u6709\u4e86\u83b7\u53d6\u8fd0\u884c\u65f6\u95f4\u7684\u65b9\u6cd5\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u8ba1\u7b97\u7d2f\u8ba1\u6d88\u8017\u7535\u91cf\u4e86\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%AF%BB%E5%8F%96_INA219_%E6%95%B0%E6%8D%AE%E5%B9%B6%E6%98%BE%E7%A4%BA\"><\/span>\u8bfb\u53d6 INA219 \u6570\u636e\u5e76\u663e\u793a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e07\u4e8b\u4ff1\u5907\uff0c\u53ea\u6b20\u4e1c\u98ce\uff0c\u51c6\u5907\u597d\u6240\u6709\u9a71\u52a8\u548c\u76f8\u5173\u4f9d\u8d56\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u8bfb\u53d6\u771f\u5b9e INA219 \u7684\u4f20\u611f\u5668\u6570\u636e\u4e86\u3002<\/p>\n<p>\u6211\u4eec\u5c06 INA219 \u6570\u636e\u8bfb\u53d6\u3001\u8ba1\u7b97\u76f8\u5173\u7684\u4ee3\u7801\uff0c\u90fd\u653e\u4e00\u4e2a\u72ec\u7acb\u7684\u6587\u4ef6\u4e2d\u6765\u7ba1\u7406\uff0c\u5c31\u53eb <code>data_manager.hpp<\/code> \u5427\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AE%9A%E4%B9%89%E6%95%B0%E6%8D%AE%E5%AD%98%E5%82%A8%E5%8F%98%E9%87%8F\"><\/span>\u5b9a\u4e49\u6570\u636e\u5b58\u50a8\u53d8\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5728\u8fd9\u91cc\u5b9a\u4e49\u4e86\u91c7\u96c6\u7535\u963b\u5927\u5c0f\u4e3a 10m\u03a9\uff0c\u53e6\u5916\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc\u5b9a\u4e49\u4e86 INA219 \u7684 I2C \u4e3a <code>0x40 &lt;&lt; <\/code>\uff0c\u8fd9\u662f\u56e0\u4e3a\u5728\u4ece CH32V003-GameConsole \u62ff\u6765\u4f7f\u7528\u7684 I2C \u9a71\u52a8\uff0c\u662f\u76f4\u63a5\u5c06\u8bfb\u5199\u4f4d\u4ea4\u7ed9\u5916\u90e8\u63a7\u5236\u4e86\uff0c\u56e0\u6b64\u8fd9\u91cc\u9700\u8981\u63d0\u524d\u5de6\u79fb\u4e00\u4f4d\u3002<\/p>\n<pre><code class=\"language-c\">#include &quot;drivers\/INA219_WE.h&quot;\n#include &lt;string.h&gt;\n#include &quot;drivers\/clock.h&quot;\n\n#define INA219_I2C_ADDRESS (0x40 &lt;&lt; 1)\n#define SHUNT_SIZE_IN_MR 10\n\nINA219_WE ina219(INA219_I2C_ADDRESS);\n\nint32_t measure_vbus_mv = 0;\nint32_t measure_vshunt_uv = 0;\nint32_t measure_current_ma = 0;\nint32_t measure_power_mw = 0;\nint32_t measure_cap_mwh = 0;\nint32_t measure_cap_last_time = 0;<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E5%88%9D%E5%A7%8B%E5%8C%96_INA219_%E9%A9%B1%E5%8A%A8\"><\/span>\u521d\u59cb\u5316 INA219 \u9a71\u52a8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4f5c\u4e3a\u4e00\u4e2a\u7535\u6d41\u8868\uff0c\u6211\u4eec\u9700\u8981\u6301\u7eed\u76d1\u6d4b\u6574\u4e2a\u7535\u8def\u548c\u529f\u7387\uff0c\u56e0\u6b64\u5728\u8fd9\u91cc\u5c06 INA219 \u521d\u59cb\u5316\u4e3a\u6301\u7eed\u91c7\u6837\u6a21\u5f0f\u3002<\/p>\n<pre><code class=\"language-c\">void adc_setup() {\n    ina219.init();\n    ina219.setMeasureMode(CONTINUOUS);\n    ina219.setPGain(PG_80);\n    ina219.setShuntSizeInOhms(SHUNT_SIZE_IN_MR \/ 1000);\n}<\/code><\/pre>\n<p>\u53e6\u5916\u8fd9\u91cc\u5c06 INA219 \u7684\u589e\u76ca\u6a21\u5f0f\u8bbe\u7f6e\u4e3a PG_80\uff0c\u6839\u636e\u6570\u636e\u624b\u518c\uff0c\u8868\u793a\u6d4b\u91cf\u538b\u5dee\u8303\u56f4\u4e3a 80mV\uff1a<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2024\/04\/diy-usb-meter-7-2.png\" alt=\"diy-usb-meter-7-2\" style=\"zoom:50%;\" \/><\/p>\n<p>\u8fd9\u91cc\u4f7f\u7528\u7684\u91c7\u6837\u7535\u963b\u5927\u5c0f\u4e3a 10m\u03a9\uff0c\u5728 PD 2.0 100W \u7684\u60c5\u51b5\u4e0b\uff0c\u6700\u5927\u7535\u6d41\u4e3a 5A\uff0c\u901a\u8fc7\u8ba1\u7b97 <code>5A * 10m\u03a9 = 50mV<\/code> \u53ef\u4ee5\u5f97\u51fa\u6700\u5927\u538b\u964d\u4e3a 50mV\uff0c\u56e0\u6b64\u8bbe\u7f6e\u6d4b\u91cf\u8303\u56f4\u4e3a 80mV \u5b8c\u5168\u591f\u7528\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%AF%BB%E5%8F%96%E6%95%B0%E6%8D%AE%E5%B9%B6%E8%AE%A1%E7%AE%97%E5%8A%9F%E7%8E%87%E3%80%81%E7%94%B5%E9%87%8F\"><\/span>\u8bfb\u53d6\u6570\u636e\u5e76\u8ba1\u7b97\u529f\u7387\u3001\u7535\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8fd9\u91cc\u91c7\u7528\u79ef\u5206\u7684\u65b9\u5f0f\u6765\u8ba1\u7b97\u7d2f\u8ba1\u7684\u7535\u91cf\uff0c\u5c06\u5f53\u524d\u8ba1\u7b97\u51fa\u6765\u7684\u529f\u7387\u89c6\u4e3a\u4ece\u4e0a\u4e00\u6b21\u8ba1\u7b97\u5230\u5f53\u524d\u65f6\u95f4\u70b9\u7684\u6301\u7eed\u529f\u7387\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u8fd9\u6bb5\u65f6\u95f4\u7684\u7535\u91cf\uff0c\u518d\u6bcf\u6b21\u8fdb\u884c\u7d2f\u8ba1\u3002<\/p>\n<pre><code class=\"language-c\">void adc_read_values() {\n    measure_vbus_mv = ina219.getBusVoltage_V() * 1000;\n    measure_vshunt_uv = ina219.getShuntVoltage_mV() * 1000;\n    if (measure_vshunt_uv &lt; 0) {\n        measure_vshunt_uv = 0;\n    }\n    measure_current_ma = measure_vshunt_uv \/ SHUNT_SIZE_IN_MR;\n    measure_power_mw = measure_vbus_mv * measure_current_ma \/ 1000;\n\n    uint32_t now = millis();\n    uint32_t period = now - measure_cap_last_time;\n    measure_cap_last_time = now;\n    int32_t period_cap = measure_power_mw * period \/ 1000;\n\n    measure_cap_mwh += period_cap;\n}<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E6%98%BE%E7%A4%BA%E6%95%B0%E6%8D%AE\"><\/span>\u663e\u793a\u6570\u636e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5728\u8fd9\u91cc\u5148\u5199\u4e00\u4e2a <code>show_power_metrics<\/code> \u65b9\u6cd5\u5c06\u5237\u65b0\u5c4f\u5e55\uff0c\u663e\u793a\u6570\u636e\u76f8\u5173\u7684\u64cd\u4f5c\u5c01\u88c5\u8d77\u6765\u3002<\/p>\n<p>\u8fd9\u91cc\u663e\u793a\u6570\u636e\u5c31\u6bd4\u8f83\u7b80\u5355\uff0c\u5c06\u7535\u538b\u3001\u7535\u6d41\u3001\u529f\u7387\u3001\u7535\u91cf\u56db\u4e2a\u6570\u5b57\u683c\u5f0f\u5316\u5230\u7f13\u51b2\u533a\u4e2d\uff0c\u5e76\u901a\u8fc7\u663e\u793a\u9a71\u52a8\u663e\u793a\u5230\u6bcf\u4e00\u884c\u4e0a\u3002<\/p>\n<pre><code class=\"language-c\">void show_power_metrics() {\n    char buf[17];\n    display_clear();\n\n    snprintf(buf, 17, (const char *)&quot;Volt : %dmV&quot;, (int)measure_vbus_mv);\n    display_write_line(0, buf);\n\n    snprintf(buf, 17, (const char *)&quot;Curr : %dmA&quot;, (int)measure_current_ma);\n    display_write_line(1, buf);\n\n    snprintf(buf, 17, (const char *)&quot;Power: %dmW&quot;, (int)measure_power_mw);\n    display_write_line(2, buf);\n\n    snprintf(buf, 17, (const char *)&quot;Cap  : %dmWh&quot;, (int)(measure_cap_mwh \/ 3600));\n    display_write_line(3, buf);\n\n    display_flush();\n}<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E6%8C%81%E7%BB%AD%E6%9B%B4%E6%96%B0%E6%95%B0%E6%8D%AE\"><\/span>\u6301\u7eed\u66f4\u65b0\u6570\u636e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6700\u7ec8\uff0c\u6211\u4eec\u4fee\u6539\u4e00\u4e0b <code>main<\/code> \u65b9\u6cd5\uff0c\u5728\u6b7b\u5faa\u73af\u4e2d\u6301\u7eed\u8bfb\u53d6 INA219 \u5e76\u66f4\u65b0\u5230\u5c4f\u5e55\u4e0a\uff0c\u5c31\u5b8c\u6210\u4e86 USB \u7535\u6d41\u8868\u7684\u6838\u5fc3\u529f\u80fd\u3002<\/p>\n<pre><code class=\"language-c\">int main(void)\n{\n    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);\n    SystemCoreClockUpdate();\n    Delay_Init();\n    systick_init();\n\n    \/\/ \u521d\u59cb\u5316\u5c4f\u5e55\u9a71\u52a8\n    display_init();\n        \/\/ \u521d\u59cb\u5316 INA219 \u9a71\u52a8\n    adc_setup();\n\n    while (1) {\n        \/\/ \u8bfb\u53d6 INA219\n        adc_read_values();\n        \/\/ \u5237\u65b0\u5c4f\u5e55\u663e\u793a\n        show_power_metrics();\n    }\n}<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"%E5%AE%9E%E9%99%85%E8%BF%90%E8%A1%8C%E6%95%88%E6%9E%9C\"><\/span>\u5b9e\u9645\u8fd0\u884c\u6548\u679c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u8fd9\u91cc\uff0c\u5c06\u56fa\u4ef6\u70e7\u5f55\u8fdb USB \u7535\u6d41\u8868\uff0c\u5e76\u4e14\u5728\u8f93\u51fa\u7aef\u63a5\u4e0a\u8d1f\u8f7d\uff0c\u5c31\u53ef\u4ee5\u5728\u5c4f\u5e55\u4e0a\u770b\u5230\u5f53\u524d\u8d1f\u8f7d\u6d88\u8017\u7684\u5b9e\u65f6\u529f\u7387\u4e86\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2024\/04\/diy-usb-meter-7-3.jpg\" alt=\"diy-usb-meter-7-3\" style=\"zoom:50%;\" \/><\/p>\n<p>\u8fd9\u91cc\u4f7f\u7528\u7684\u7535\u6e90\u8f93\u5165\u662f 5V\uff0c\u53ef\u4ee5\u770b\u5230 USB \u7535\u6d41\u8868\u68c0\u6d4b\u5230\u7684\u7535\u538b\u53ea\u6709 4.8V \u5de6\u53f3\uff0c\u8fd9\u662f\u56e0\u4e3a\u901a\u5e38 USB \u7535\u7f06\u90fd\u6709\u5185\u963b\uff0c\u5728\u6709\u7535\u6d41\u65f6\uff0c\u4f1a\u6709\u538b\u964d\uff0c\u6700\u7ec8\u5230\u8fbe\u8d1f\u8f7d\u65f6\u7684\u7535\u538b\u5c31\u8ddf\u7535\u6e90\u7aef\u7684\u7535\u538b\u4e0d\u4e00\u81f4\u4e86\u3002<\/p>\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u66f4\u597d\u7684 USB \u7ebf\u6750\u4f1a\u62e5\u6709\u66f4\u4f4e\u7684\u5185\u963b\uff0c\u5728\u5927\u529f\u7387\u5145\u7535\u7684\u573a\u666f\u4e2d\uff0c\u4e5f\u4f1a\u62e5\u6709\u53d1\u70ed\u66f4\u4f4e\u7684\u4f18\u52bf\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%B0%8F%E7%BB%93\"><\/span>\u5c0f\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u81f3\u6b64\uff0c\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86 DIY USB \u7535\u6d41\u8868\u7684\u6838\u5fc3\u529f\u80fd\uff0c\u663e\u793a\u7535\u538b\u3001\u7535\u6d41\u7b49\u6570\u636e\uff0c\u5982\u679c\u4e0d\u9700\u8981\u989d\u5916\u7684\u529f\u80fd\uff0c\u5728\u8fd9\u4e2a\u6b65\u9aa4\u5df2\u7ecf\u53ef\u4ee5\u7b97\u662f\u5b8c\u5de5\u4e86 \ud83d\ude03\u3002<\/p>\n<p>\u5f53\u7136\u5728\u786c\u4ef6\u4e0a\u6211\u4eec\u5df2\u7ecf\u9884\u7559\u4e86\u4e24\u4e2a\u6309\u94ae\uff0c\u8fd8\u662f\u53ef\u4ee5\u505a\u4e00\u4e9b\u5176\u4ed6\u529f\u80fd\u8fdb\u6765\uff0c\u4f8b\u5982\u663e\u793a\u529f\u7387\u66f2\u7ebf\uff1f\u8fd9\u6837\u5c31\u53ef\u4ee5\u5728\u7ed9\u8bbe\u5907\u5145\u7535\u8fc7\u7a0b\u4e2d\u89c2\u5bdf\u5230\u5145\u7535\u529f\u7387\u7684\u53d8\u5316\u4e86\u3002<\/p>\n<p>\u90a3\u4e48\uff0c\u4e0b\u4e00\u7bc7\u6765\u5b8c\u6210\u8bb0\u5f55\u529f\u7387\u5386\u53f2\u548c\u7ed8\u5236\u529f\u7387\u66f2\u7ebf\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"USB_%E7%94%B5%E6%B5%81%E8%A1%A8%E5%BC%80%E6%BA%90%E5%9C%B0%E5%9D%80\"><\/span>USB \u7535\u6d41\u8868\u5f00\u6e90\u5730\u5740<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u8fd9\u4e2a USB \u7535\u6d41\u8868\u6240\u6709\u8d44\u6599\u5df2\u7ecf\u5f00\u6e90\uff0c\u53ef\u4ee5\u5728\u4ee5\u4e0b\u4ed3\u5e93\u4e2d\u83b7\u53d6\uff0c\u5305\u542b\u56fa\u4ef6\u4ee3\u7801\u3001PCB \u751f\u4ea7 Gerber \u6587\u4ef6\u3001\u539f\u7406\u56fe\u548c\u5916\u58f3 STL \u6587\u4ef6\u3002<\/p>\n<p><a href=\"https:\/\/github.com\/ohdarling\/CH32V003-USBMeter\">https:\/\/github.com\/ohdarling\/CH32V003-USBMeter<\/a><\/p>\n<p>\u786c\u4ef6\u76f8\u5173\u7684\u6e90\u6587\u4ef6\u5df2\u7ecf\u5728\u7acb\u521b\u5f00\u6e90\u5e73\u53f0\u5f00\u6e90\uff0c\u8bbf\u95ee\u4ee5\u4e0b\u5730\u5740\u53ef\u4ee5\u8fdb\u884c\u4e00\u952e PCB \u4e0b\u5355\u548c\u4e00\u952e BOM \u914d\u5355\u64cd\u4f5c\uff1a<\/p>\n<p><a href=\"https:\/\/oshwhub.com\/wandaeda\/ji-yu-ch32v003-de-usb-dian-liu-biao\">https:\/\/oshwhub.com\/wandaeda\/ji-yu-ch32v003-de-usb-dian-liu-biao<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"DIY_USB_%E7%94%B5%E6%B5%81%E8%A1%A8%E7%B3%BB%E5%88%97\"><\/span>DIY USB \u7535\u6d41\u8868\u7cfb\u5217<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-oled-display\/\">DIY USB \u7535\u6d41\u8868\uff086\uff09\uff1a\u70b9\u4e2a\u5c4f\uff0c\u4f7f\u7528 I2C \u9a71\u52a8 0.96 \u5bf8 OLED<\/a> <\/li>\n<li><a href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-setup-fw-dev\/\">DIY USB \u7535\u6d41\u8868\uff085\uff09\uff1a\u4f7f\u7528 VSCode + PlatformIO \u642d\u5efa\u56fa\u4ef6\u5f00\u53d1\u73af\u5883<\/a><\/li>\n<li><a href=\"https:\/\/xujiwei.com\/blog\/2024\/03\/diy-usb-meter-pcb-soldering\/\">DIY USB \u7535\u6d41\u8868\uff084\uff09\uff1aPCB \u710a\u63a5\u4e0e\u8c03\u8bd5<\/a><\/li>\n<li><a href=\"https:\/\/xujiwei.com\/blog\/2024\/03\/diy-usermeter-order-pcb\/\">DIY USB \u7535\u6d41\u8868\uff083\uff09\uff1aPCB \u514d\u8d39\u6253\u6837\u8be6\u89e3<\/a><\/li>\n<li><a href=\"https:\/\/xujiwei.com\/blog\/2024\/02\/diy-usb-meter-pcb-design\/\">DIY USB \u7535\u6d41\u8868\uff082\uff09\uff1aPCB \u5e03\u5c40\u5e03\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/xujiwei.com\/blog\/2024\/02\/diy-usb-meter-schematic\/\">DIY USB \u7535\u6d41\u8868\uff081\uff09\uff1a\u5143\u4ef6\u9009\u578b\u548c\u539f\u7406\u56fe\u7ed8\u5236<\/a><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E5%85%B6%E4%BB%96_DIY_%E9%A1%B9%E7%9B%AE\"><\/span>\u5176\u4ed6 DIY \u9879\u76ee<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"30_%E5%85%83_DIY_%E4%B8%80%E4%B8%AA%E6%9F%94%E6%80%A7%E7%81%AF%E4%B8%9D%E6%B0%9B%E5%9B%B4%E7%81%AF\"><\/span><a href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-ambient-light\/\">30 \u5143 DIY \u4e00\u4e2a\u67d4\u6027\u706f\u4e1d\u6c1b\u56f4\u706f<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2024\/03\/diy-ambient-light-1.jpg\" alt=\"diy-ambient-light-1\" style=\"zoom:50%;\" \/><\/p>\n<p>\u6559\u7a0b\u5730\u5740\uff1a <a href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-ambient-light\/\">https:\/\/xujiwei.com\/blog\/2024\/04\/diy-ambient-light\/<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\"><\/span>\u53c2\u8003\u8d44\u6599<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/wagiminator\/CH32V003-GameConsole\">https:\/\/github.com\/wagiminator\/CH32V003-GameConsole<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/wollewald\/INA219_WE\">https:\/\/github.com\/wollewald\/INA219_WE<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/ohdarling\/CH32V003-USBMeter\">https:\/\/github.com\/ohdarling\/CH32V003-USBMeter<\/a><\/li>\n<li><a href=\"https:\/\/oshwhub.com\/wandaeda\/ji-yu-ch32v003-de-usb-dian-liu-biao\">https:\/\/oshwhub.com\/wandaeda\/ji-yu-ch32v003-de-usb-dian-liu-biao<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/Community-PIO-CH32V\/arduino_core_ch32\">https:\/\/github.com\/Community-PIO-CH32V\/arduino_core_ch32<\/a><\/li>\n<li><a href=\"https:\/\/www.ti.com\/product\/INA219\">https:\/\/www.ti.com\/product\/INA219<\/a><\/li>\n<li><a href=\"https:\/\/www.ti.com\/lit\/ds\/symlink\/ina219.pdf\">https:\/\/www.ti.com\/lit\/ds\/symlink\/ina219.pdf<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u524d\u4e00\u7bc7 \u300aDIY USB \u7535\u6d41\u8868\uff086\uff09\uff1a\u70b9\u4e2a\u5c4f\uff0c\u4f7f\u7528 I2C \u9a71\u52a8 0.96  &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/xujiwei.com\/blog\/2024\/04\/diy-usb-meter-read-ina219\/\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":1304,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[167,402],"tags":[262,359,329,398,372,371,387,386],"_links":{"self":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/1307"}],"collection":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/comments?post=1307"}],"version-history":[{"count":0,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/1307\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media\/1304"}],"wp:attachment":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media?parent=1307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/categories?post=1307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/tags?post=1307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}