{"id":72493,"date":"2026-02-05T18:57:21","date_gmt":"2026-02-05T10:57:21","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/72493.html"},"modified":"2026-02-05T18:57:21","modified_gmt":"2026-02-05T10:57:21","slug":"ch347-339w%e5%bc%80%e6%ba%90%e9%a1%b9%e7%9b%ae%ef%bc%9a%e9%9b%86spi%e3%80%81i2c%e3%80%81jtag%e3%80%81swd%e3%80%81uart%e3%80%81gpio%e5%a4%9a%e5%8a%9f%e8%83%bd%e4%b8%ba%e4%b8%80%e4%bd%93%ef%bc%882","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/72493.html","title":{"rendered":"CH347\/339W\u5f00\u6e90\u9879\u76ee\uff1a\u96c6SPI\u3001I2C\u3001JTAG\u3001SWD\u3001UART\u3001GPIO\u591a\u529f\u80fd\u4e3a\u4e00\u4f53\uff082\uff09"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u7cfb\u5217\u76ee\u5f55<\/li>\n<li>\u524d\u8a00<\/li>\n<li>\u524d\u671f\u51c6\u5907<\/li>\n<li>\u5177\u4f53\u5b9e\u73b0<\/li>\n<li>\u603b\u7ed3<\/li>\n<\/ul>\n<hr \/>\n<h2>\u7cfb\u5217\u76ee\u5f55<\/h2>\n<ul>\n<li>CH347\/339W\u5f00\u6e90\u9879\u76ee&#xff1a;\u96c6SPI\u3001I2C\u3001JTAG\u3001SWD\u3001UART\u3001GPIO\u591a\u529f\u80fd\u4e3a\u4e00\u4f53&#xff08;1&#xff09;<\/li>\n<\/ul>\n<hr \/>\n<h2>\u524d\u8a00<\/h2>\n<p>\u524d\u9762\u4e00\u7ae0\u6784\u60f3\u4e86CH347\u591a\u529f\u80fd\u63a5\u53e3\u6f14\u793a\u7a0b\u5e8f&#xff0c;\u5e76\u8bbe\u8ba1\u4e86\u7a0b\u5e8f\u7684\u5927\u81f4\u7ed3\u6784&#xff0c;\u672c\u7ae0\u5c06\u5b8c\u6210\u6e29\u6e7f\u5ea6\u91c7\u96c6\u529f\u80fd\u3002<\/p>\n<p>\u6700\u7ec8\u754c\u9762\u6548\u679c\u5982\u4e0b&#xff1a; \u754c\u9762\u4f1a\u4e0d\u65ad\u663e\u793a\u91c7\u96c6\u5230\u7684\u6e29\u6e7f\u5ea6\u6570\u636e&#xff1b; \u4f7f\u7528\u6307\u5357\u4e2d\u63d0\u4f9b\u786c\u4ef6\u7684\u8fde\u63a5\u56fe\u3002<\/p>\n<ul>\n<li>\n<p>\u64cd\u4f5c\u8bf4\u660e&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260205105720-698477900f41d.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/li>\n<li>\n<p>\u6e29\u5ea6\u76d1\u6d4b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260205105720-698477904162c.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/li>\n<\/ul>\n<h2>\u524d\u671f\u51c6\u5907<\/h2>\n<p>\u5728\u4e00\u5207\u5f00\u59cb\u524d&#xff0c;\u6211\u4eec\u5148\u7528i2c-tools\u5de5\u5177\u6765\u68c0\u6d4b\u4e0b\u6211\u624b\u4e0a\u7684SHT40\u4f20\u611f\u5668\u662f\u5426\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002 i2c-tools\u5de5\u5177\u5728Linux\u4e0b\u88ab\u5e7f\u6cdb\u4f7f\u7528&#xff0c;CH347\u5728Windows\u7684\u5b9e\u73b0\u5982\u4e0b&#xff1a;<\/p>\n<p>https:\/\/github.com\/ZhiyuanYuanNJ\/CH347-I2C-TOOLS CH347\u5e94\u7528 USB\u8f6cI2C\u529f\u80fd\u4e4b&#xff1a;\u5f00\u6e90\u9879\u76eei2c-tools\u5de5\u5177\u7684\u4f7f\u7528(2)<\/p>\n<p>\u6211\u4eec\u4e0b\u8f7d\u7f16\u8bd1\u540e&#xff0c;\u8fd0\u884cdetect\u547d\u4ee4\u53bbSHT40\u662f\u5426\u80fd\u68c0\u6d4b\u5230&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260205105720-698477907ba18.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u53ef\u4ee5\u770b\u5230&#xff0c;0x44\u5730\u5740\u7684SHT40\u88ab\u6b63\u5e38\u8bc6\u522b\u5230\u3002<\/p>\n<h2>\u5177\u4f53\u5b9e\u73b0<\/h2>\n<p>\u7a0b\u5e8f\u4e2d\u5b9a\u4e49CH347\u76f8\u5bf9\u5e94\u7684\u63a7\u5236\u7c7b&#xff0c;\u5b8c\u6210\u6253\u5f00\u5173\u95edI2C\u8bfb\u5199\u7b49\u64cd\u4f5c&#xff0c;\u5728Ch3xx\u8fd9\u4e2a\u7c7b\u4e2d&#xff0c;\u901a\u8fc7MeasureThread\u7ebf\u7a0b\u6765\u4e0d\u65ad\u83b7\u53d6\u6e29\u6e7f\u5ea6\u6570\u636e\u3002 \u4f7f\u7528CH347StreamI2C_RetACK\u51fd\u6570\u53bb\u6536\u53d1I2C\u6570\u636e\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">SHT40_ADDR<\/span> <span class=\"token expression\"><span class=\"token number\">0x44<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">SHT40_COMMAND<\/span> <span class=\"token expression\"><span class=\"token number\">0xfd<\/span><\/span><\/span><br \/>\nm_hDev <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">CH347OpenDevice<\/span><span class=\"token punctuation\">(<\/span>m_devIndex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6253\u5f00CH347\u8bbe\u5907<\/span><br \/>\n<span class=\"token function\">CH347I2C_Set<\/span><span class=\"token punctuation\">(<\/span>m_devIndex<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8bbe\u7f6eI2C\u63a5\u53e3\u901f\u7387&#xff0c;\u4f4d1-\u4f4d0: I2C\u63a5\u53e3\u901f\u5ea6\/SCL\u9891\u7387,<\/span><br \/>\n<span class=\"token comment\">\/\/  00&#061;\u4f4e\u901f\/20KHz,01&#061;\u6807\u51c6\/100KHz(\u9ed8\u8ba4\u503c),10&#061;\u5feb\u901f\/400KHz,11&#061;\u9ad8\u901f\/750KHz<\/span><br \/>\n<span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">char<\/span> writedata<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">{<\/span> SHT40_ADDR <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> SHT40_COMMAND <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/**<br \/>\n * &#064;brief       \u901a\u8fc7I2C\u603b\u7ebf\u8bfb\u5199\u6570\u636e\u5230\u8bbe\u5907<br \/>\n * &#064;param[in]  iIndex \u8bbe\u5907\u7d22\u5f15<br \/>\n * &#064;param[in]  iWriteLength   \u51c6\u5907\u5199\u51fa\u7684\u5b57\u8282\u6570&#xff0c;\u8fd9\u91cc\u662f\u8bbe\u5907\u5730\u5740\u548c\u5bc4\u5b58\u5668\u5730\u5740&#xff0c;2\u5b57\u8282<br \/>\n * &#064;param[in]  iWriteBuffer    \u5199\u5165\u6570\u636e\u7684\u6307\u9488<br \/>\n * &#064;param[in]  iReadLength  \u8981\u8bfb\u53d6\u7684\u5b57\u8282\u6570<br \/>\n * &#064;param[out]  oReadBuffer  \u8bfb\u53d6\u6570\u636e\u7684\u6307\u9488&#xff0c;\u8fd4\u56de\u540e\u662f\u8bfb\u51fa\u7684\u6570\u636e<br \/>\n * &#064;param[out]  rAckCount   \u8bfb\u5199\u8fd4\u56de\u7684ACK\u503c&#xff0c;\u5f53\u524d\u53ea\u63a5\u5165\u4e861\u4e2aI2C\u5668\u4ef6&#xff0c;\u6240\u4ee5\u6b63\u5e38\u5e94\u4e3a1<br \/>\n * &#064;return      TRUE  \u6210\u529f, FALSE  \u5931\u8d25<br \/>\n *\/<\/span><br \/>\nret <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">CH347StreamI2C_RetACK<\/span><span class=\"token punctuation\">(<\/span>dev<span class=\"token operator\">-&gt;<\/span>m_devIndex<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> writedata<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>sht40_sensor<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>ret <span class=\"token operator\">&#061;&#061;<\/span> FALSE<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">fprintf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">stderr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;write faild\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndev<span class=\"token operator\">-&gt;<\/span>b_th_status <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/ \u7b49\u5f8510ms&#xff0c;\u7b49\u5f85SHT40\u5904\u7406<\/span><br \/>\nstd<span class=\"token double-colon punctuation\">::<\/span>this_thread<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">sleep_for<\/span><span class=\"token punctuation\">(<\/span>std<span class=\"token double-colon punctuation\">::<\/span>chrono<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">milliseconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u8bfb\u53d6\u6570\u636e\u524d\u5148\u53d1\u90010x44\u8bbe\u5907\u5730\u5740&#xff0c;\u7136\u540e\u8bfb\u53d66\u5b57\u8282\u6570\u636e<\/span><br \/>\nret <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">CH347StreamI2C_RetACK<\/span><span class=\"token punctuation\">(<\/span>dev<span class=\"token operator\">-&gt;<\/span>m_devIndex<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> writedata<span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> readdata<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>sht40_sensor<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>ret <span class=\"token operator\">&#061;&#061;<\/span> FALSE<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token function\">fprintf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">stderr<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;read faild\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\ndev<span class=\"token operator\">-&gt;<\/span>b_th_status <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>sht40_sensor <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ndev<span class=\"token operator\">-&gt;<\/span>b_th_status <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\ndev<span class=\"token operator\">-&gt;<\/span>b_th_status <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token comment\">\/\/ \u6570\u636e\u5904\u7406\u5f97\u5230\u771f\u5b9e\u7684\u6e29\u6e7f\u5ea6\u6570\u636e<\/span><br \/>\ntemp_raw <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>readdata<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> readdata<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\nrh_raw <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>readdata<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> readdata<span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5f53\u524d\u73af\u5883\u5b9e\u9645\u6e29\u5ea6<\/span><br \/>\ndev<span class=\"token operator\">-&gt;<\/span>temperature <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">45.0f<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">175.0f<\/span> <span class=\"token operator\">*<\/span> temp_raw <span class=\"token operator\">\/<\/span> <span class=\"token number\">65535.0f<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5f53\u524d\u73af\u5883\u5b9e\u9645\u6e7f\u5ea6<\/span><br \/>\ndev<span class=\"token operator\">-&gt;<\/span>humidity <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">6.0f<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">125.0f<\/span> <span class=\"token operator\">*<\/span> rh_raw <span class=\"token operator\">\/<\/span> <span class=\"token number\">65535.0f<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u754c\u9762\u9884\u7559\u4e86\u62d6\u52a8\u63a7\u4ef6\u6765\u8bbe\u7f6e\u91c7\u96c6\u6e29\u6e7f\u5ea6\u7684\u95f4\u9694&#xff0c;\u9ed8\u8ba40.5S\u91c7\u96c6\u4e00\u6b21\u3002<\/p>\n<p>\u5f53\u7136\u672a\u6765\u53ef\u4ee5\u63a5\u5165\u66f4\u591aI2C\u8bbe\u5907&#xff0c;\u5b9e\u65f6\u76d1\u6d4b\u66f4\u591a\u4fe1\u606f&#xff0c;\u6765\u4f7f\u8f6f\u4ef6\u66f4\u52a0\u7684\u5b8c\u5584\u3002<\/p>\n<hr \/>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u672c\u7ae0\u4ecb\u7ecd\u4e86CH347\/339W I2C\u90e8\u5206\u7684\u4f7f\u7528&#xff0c;\u4f7f\u7528CH347\u8fdb\u884cI2C\u8bfb\u5199\u7684\u63a5\u53e3\u6bd4\u8f83\u7b80\u5355&#xff0c;\u53ea\u9700\u7ed9CH347StreamI2C_RetACK\u4f20\u5165\u76f8\u5e94I2C\u8bbe\u5907\u6b63\u786e\u7684\u8bbe\u5907\u5730\u5740\u4e0e\u5bc4\u5b58\u5668\u5730\u5740\u5373\u53ef\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u5c06\u501f\u52a9xvcd-ch347\u5f00\u6e90\u9879\u76ee\u6765\u5b8c\u6210Xilinx FPGA\u7684\u4e0b\u8f7d\u4e0e\u8c03\u8bd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u7cfb\u5217\u76ee\u5f55\u524d\u8a00\u524d\u671f\u51c6\u5907\u5177\u4f53\u5b9e\u73b0\u603b\u7ed3\u7cfb\u5217\u76ee\u5f55<br \/>\nCH347\/339W\u5f00\u6e90\u9879\u76ee&#xff1a;\u96c6SPI\u3001I2C\u3001JTAG\u3001SWD\u3001UART\u3001GPIO\u591a\u529f\u80fd\u4e3a\u4e00\u4f53&#xff08;1&#xff09; \u524d\u8a00<br 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