{"id":1164310,"date":"2025-01-15T15:05:39","date_gmt":"2025-01-15T07:05:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1164310.html"},"modified":"2025-01-15T15:05:42","modified_gmt":"2025-01-15T07:05:42","slug":"python%e5%a6%82%e4%bd%95%e5%81%9a%e4%b8%b2%e5%8f%a3%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1164310.html","title":{"rendered":"python\u5982\u4f55\u505a\u4e32\u53e3\u901a\u4fe1"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25204913\/cfef4372-9359-48ea-b47d-40cbe171e634.webp\" alt=\"python\u5982\u4f55\u505a\u4e32\u53e3\u901a\u4fe1\" \/><\/p>\n<p><p> <strong>Python\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528PySerial\u5e93\u3001\u914d\u7f6e\u4e32\u53e3\u53c2\u6570\u3001\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3001\u5904\u7406\u63a5\u6536\u7684\u6570\u636e<\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528PySerial\u5e93\u662f\u6700\u57fa\u7840\u4e5f\u662f\u6700\u91cd\u8981\u7684\u4e00\u6b65\u3002PySerial\u662f\u4e00\u4e2aPython\u5e93\uff0c\u7528\u4e8e\u5728\u5404\u79cd\u5e73\u53f0\u4e0a\u8bbf\u95ee\u4e32\u884c\u7aef\u53e3\u3002\u5b83\u63d0\u4f9b\u4e86\u7b80\u5355\u7684API\uff0c\u4f7f\u4e32\u53e3\u901a\u4fe1\u53d8\u5f97\u5bb9\u6613\u3002\u4ee5\u4e0b\u662f\u5173\u4e8e\u5982\u4f55\u4f7f\u7528Python\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u7684\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528PySerial\u5e93<\/h3>\n<\/p>\n<p><p>PySerial\u662fPython\u4e2d\u6700\u5e38\u7528\u7684\u5e93\uff0c\u7528\u4e8e\u4e32\u53e3\u901a\u4fe1\u3002\u5b83\u652f\u6301\u591a\u79cd\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5305\u62ecWindows\u3001Linux\u548cMacOS\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5PySerial\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528pip\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install pyserial<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>1\u3001\u5b89\u88c5PySerial<\/h4>\n<\/p>\n<p><p>\u5b89\u88c5PySerial\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install pyserial<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Python\u4ee3\u7801\u4e2d\u5bfc\u5165\u8be5\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u6253\u5f00\u4e32\u53e3<\/h4>\n<\/p>\n<p><p>\u6253\u5f00\u4e32\u53e3\u662f\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u7684\u7b2c\u4e00\u6b65\u3002\u6211\u4eec\u9700\u8981\u6307\u5b9a\u4e32\u53e3\u53f7\u548c\u6ce2\u7279\u7387\uff08baud rate\uff09\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser = serial.Serial(&#39;COM3&#39;, 9600)  # Windows<\/p>\n<h2><strong>ser = serial.Serial(&#39;\/dev\/ttyUSB0&#39;, 9600)  # Linux<\/strong><\/h2>\n<h2><strong>ser = serial.Serial(&#39;\/dev\/tty.usbserial&#39;, 9600)  # MacOS<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c<code>&#39;COM3&#39;<\/code>\u662f\u4e32\u53e3\u53f7\uff0c<code>9600<\/code>\u662f\u6ce2\u7279\u7387\u3002\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u4f7f\u7528\u4e0d\u540c\u7684\u4e32\u53e3\u540d\u79f0\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u914d\u7f6e\u4e32\u53e3\u53c2\u6570<\/h3>\n<\/p>\n<p><p>\u5728\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u914d\u7f6e\u4e32\u53e3\u7684\u5404\u79cd\u53c2\u6570\uff0c\u5982\u6ce2\u7279\u7387\u3001\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\u3001\u6821\u9a8c\u4f4d\u7b49\u3002\u8fd9\u4e9b\u53c2\u6570\u76f4\u63a5\u5f71\u54cd\u901a\u4fe1\u7684\u8d28\u91cf\u548c\u901f\u5ea6\u3002<\/p>\n<\/p>\n<p><h4>1\u3001\u8bbe\u7f6e\u6ce2\u7279\u7387<\/h4>\n<\/p>\n<p><p>\u6ce2\u7279\u7387\u662f\u6307\u6bcf\u79d2\u949f\u4f20\u8f93\u7684\u6bd4\u7279\u6570\u3002\u5e38\u89c1\u7684\u6ce2\u7279\u7387\u67099600\u300119200\u300138400\u7b49\u3002\u5728\u6253\u5f00\u4e32\u53e3\u65f6\uff0c\u6211\u4eec\u5df2\u7ecf\u6307\u5b9a\u4e86\u6ce2\u7279\u7387\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u6ce2\u7279\u7387\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser.baudrate = 19200<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u8bbe\u7f6e\u6570\u636e\u4f4d<\/h4>\n<\/p>\n<p><p>\u6570\u636e\u4f4d\u662f\u6bcf\u4e2a\u5b57\u7b26\u7684\u4f4d\u6570\uff0c\u5e38\u89c1\u7684\u6570\u636e\u4f4d\u67095\u30016\u30017\u30018\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cPySerial\u4f7f\u75288\u4e2a\u6570\u636e\u4f4d\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u6570\u636e\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser.bytesize = serial.EIGHTBITS<\/p>\n<h2><strong>\u5176\u4ed6\u9009\u9879\u6709 serial.FIVEBITS, serial.SIXBITS, serial.SEVENBITS<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3\u3001\u8bbe\u7f6e\u505c\u6b62\u4f4d<\/h4>\n<\/p>\n<p><p>\u505c\u6b62\u4f4d\u7528\u4e8e\u6807\u8bb0\u4e00\u4e2a\u5b57\u7b26\u7684\u7ed3\u675f\u3002\u5e38\u89c1\u7684\u505c\u6b62\u4f4d\u67091\u30011.5\u30012\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cPySerial\u4f7f\u75281\u4e2a\u505c\u6b62\u4f4d\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u505c\u6b62\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser.stopbits = serial.STOPBITS_ONE<\/p>\n<h2><strong>\u5176\u4ed6\u9009\u9879\u6709 serial.STOPBITS_ONE_POINT_FIVE, serial.STOPBITS_TWO<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>4\u3001\u8bbe\u7f6e\u6821\u9a8c\u4f4d<\/h4>\n<\/p>\n<p><p>\u6821\u9a8c\u4f4d\u7528\u4e8e\u68c0\u6d4b\u6570\u636e\u4f20\u8f93\u4e2d\u7684\u9519\u8bef\u3002\u5e38\u89c1\u7684\u6821\u9a8c\u65b9\u5f0f\u6709\u65e0\u6821\u9a8c\u3001\u5947\u6821\u9a8c\u3001\u5076\u6821\u9a8c\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cPySerial\u4e0d\u4f7f\u7528\u6821\u9a8c\u4f4d\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\u6821\u9a8c\u4f4d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser.parity = serial.PARITY_NONE<\/p>\n<h2><strong>\u5176\u4ed6\u9009\u9879\u6709 serial.PARITY_EVEN, serial.PARITY_ODD, serial.PARITY_MARK, serial.PARITY_SPACE<\/strong><\/h2>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u662f\u4e32\u53e3\u901a\u4fe1\u7684\u6838\u5fc3\u3002PySerial\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3002<\/p>\n<\/p>\n<p><h4>1\u3001\u5199\u5165\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u5199\u5165\u6570\u636e\u662f\u5c06\u6570\u636e\u4ece\u8ba1\u7b97\u673a\u53d1\u9001\u5230\u4e32\u53e3\u8bbe\u5907\u3002\u53ef\u4ee5\u4f7f\u7528<code>write<\/code>\u65b9\u6cd5\u6765\u5199\u5165\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser.write(b&#39;Hello, World!&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>write<\/code>\u65b9\u6cd5\u9700\u8981\u4f20\u5165\u5b57\u8282\u6570\u636e\u3002\u5982\u679c\u662f\u5b57\u7b26\u4e32\u6570\u636e\uff0c\u9700\u8981\u5148\u8fdb\u884c\u7f16\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">ser.write(&#39;Hello, World!&#39;.encode())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u8bfb\u53d6\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u8bfb\u53d6\u6570\u636e\u662f\u5c06\u6570\u636e\u4ece\u4e32\u53e3\u8bbe\u5907\u63a5\u6536\u5230\u8ba1\u7b97\u673a\u3002\u53ef\u4ee5\u4f7f\u7528<code>read<\/code>\u65b9\u6cd5\u6765\u8bfb\u53d6\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = ser.read(10)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>read<\/code>\u65b9\u6cd5\u4f1a\u963b\u585e\uff0c\u76f4\u5230\u8bfb\u53d6\u5230\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u3002\u5982\u679c\u5e0c\u671b\u8bfb\u53d6\u6240\u6709\u53ef\u7528\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>read_all<\/code>\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = ser.read_all()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528<code>readline<\/code>\u65b9\u6cd5\u8bfb\u53d6\u4e00\u884c\u6570\u636e\uff0c\u76f4\u5230\u9047\u5230\u6362\u884c\u7b26\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">line = ser.readline()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u5904\u7406\u63a5\u6536\u7684\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u63a5\u6536\u5230\u7684\u6570\u636e\u901a\u5e38\u662f\u5b57\u8282\u6570\u636e\uff0c\u9700\u8981\u8fdb\u884c\u89e3\u7801\u624d\u80fd\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002\u53ef\u4ee5\u4f7f\u7528<code>decode<\/code>\u65b9\u6cd5\u8fdb\u884c\u89e3\u7801\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">decoded_data = data.decode()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u5904\u7406\u63a5\u6536\u7684\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u8003\u8651\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u683c\u5f0f\u3002\u5e38\u89c1\u7684\u5904\u7406\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u5206\u9694\u7b26<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u53d1\u9001\u7684\u6570\u636e\u5305\u542b\u5206\u9694\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u5206\u9694\u7b26\u6765\u5206\u5272\u6570\u636e\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u9017\u53f7\u5206\u9694\u7684\u6570\u636e\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u8fdb\u884c\u5904\u7406\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = ser.readline().decode().strip().split(&#39;,&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u6821\u9a8c\u548c<\/h4>\n<\/p>\n<p><p>\u6821\u9a8c\u548c\u7528\u4e8e\u68c0\u6d4b\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002\u53d1\u9001\u7aef\u8ba1\u7b97\u6570\u636e\u7684\u6821\u9a8c\u548c\uff0c\u5e76\u5c06\u5176\u9644\u52a0\u5230\u6570\u636e\u672b\u5c3e\u3002\u63a5\u6536\u7aef\u8ba1\u7b97\u63a5\u6536\u5230\u7684\u6570\u636e\u7684\u6821\u9a8c\u548c\uff0c\u5e76\u4e0e\u9644\u52a0\u7684\u6821\u9a8c\u548c\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u76f8\u7b49\uff0c\u8bf4\u660e\u6570\u636e\u5b8c\u6574\uff1b\u5426\u5219\uff0c\u8bf4\u660e\u6570\u636e\u635f\u574f\u3002<\/p>\n<\/p>\n<p><p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u4f7f\u7528\u5f02\u6216\u6821\u9a8c\uff1a<\/p>\n<\/p>\n<p><p>\u53d1\u9001\u7aef\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def calculate_checksum(data):<\/p>\n<p>    checksum = 0<\/p>\n<p>    for byte in data:<\/p>\n<p>        checksum ^= byte<\/p>\n<p>    return checksum<\/p>\n<p>data = b&#39;Hello, World!&#39;<\/p>\n<p>checksum = calculate_checksum(data)<\/p>\n<p>ser.write(data + bytes([checksum]))<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u63a5\u6536\u7aef\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def calculate_checksum(data):<\/p>\n<p>    checksum = 0<\/p>\n<p>    for byte in data:<\/p>\n<p>        checksum ^= byte<\/p>\n<p>    return checksum<\/p>\n<p>received_data = ser.read(len(data) + 1)<\/p>\n<p>data = received_data[:-1]<\/p>\n<p>received_checksum = received_data[-1]<\/p>\n<p>if calculate_checksum(data) == received_checksum:<\/p>\n<p>    print(&quot;Data is valid&quot;)<\/p>\n<p>else:<\/p>\n<p>    print(&quot;Data is corrupted&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u4f7f\u7528\u7ebf\u7a0b\u5904\u7406\u4e32\u53e3\u901a\u4fe1<\/h3>\n<\/p>\n<p><p>\u5728\u4e00\u4e9b\u5e94\u7528\u573a\u666f\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u540c\u65f6\u8fdb\u884c\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u3002\u4f7f\u7528\u7ebf\u7a0b\u53ef\u4ee5\u5b9e\u73b0\u5e76\u884c\u5904\u7406\uff0c\u907f\u514d\u963b\u585e\u3002\u53ef\u4ee5\u4f7f\u7528Python\u7684<code>threading<\/code>\u6a21\u5757\u6765\u521b\u5efa\u7ebf\u7a0b\u3002<\/p>\n<\/p>\n<p><h4>1\u3001\u521b\u5efa\u8bfb\u53d6\u7ebf\u7a0b<\/h4>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u8bfb\u53d6\u7ebf\u7a0b\uff0c\u6301\u7eed\u8bfb\u53d6\u4e32\u53e3\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import threading<\/p>\n<p>def read_from_port(ser):<\/p>\n<p>    while True:<\/p>\n<p>        try:<\/p>\n<p>            data = ser.readline().decode().strip()<\/p>\n<p>            print(f&quot;Received: {data}&quot;)<\/p>\n<p>        except Exception as e:<\/p>\n<p>            print(f&quot;Error: {e}&quot;)<\/p>\n<p>read_thread = threading.Thread(target=read_from_port, args=(ser,))<\/p>\n<p>read_thread.start()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u521b\u5efa\u5199\u5165\u7ebf\u7a0b<\/h4>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u5199\u5165\u7ebf\u7a0b\uff0c\u6301\u7eed\u5199\u5165\u4e32\u53e3\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def write_to_port(ser):<\/p>\n<p>    while True:<\/p>\n<p>        try:<\/p>\n<p>            message = input(&quot;Enter message: &quot;)<\/p>\n<p>            ser.write(message.encode())<\/p>\n<p>        except Exception as e:<\/p>\n<p>            print(f&quot;Error: {e}&quot;)<\/p>\n<p>write_thread = threading.Thread(target=write_to_port, args=(ser,))<\/p>\n<p>write_thread.start()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4f7f\u7528\u7ebf\u7a0b\u53ef\u4ee5\u8ba9\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u72ec\u7acb\u8fdb\u884c\uff0c\u63d0\u9ad8\u901a\u4fe1\u7684\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u4e32\u53e3\u901a\u4fe1\u7684\u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n<p><p>\u4e32\u53e3\u901a\u4fe1\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u9886\u57df\uff0c\u5982\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u5d4c\u5165\u5f0f\u7cfb\u7edf\u3001\u4f20\u611f\u5668\u6570\u636e\u91c7\u96c6\u7b49\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u5de5\u4e1a\u81ea\u52a8\u5316<\/h4>\n<\/p>\n<p><p>\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u4e2d\uff0c\u4e32\u53e3\u901a\u4fe1\u7528\u4e8ePLC\uff08\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\uff09\u3001\u53d8\u9891\u5668\u3001\u4f20\u611f\u5668\u7b49\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u4e32\u53e3\u901a\u4fe1\u53ef\u4ee5\u63a7\u5236PLC\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u8bfb\u53d6\u4f20\u611f\u5668\u7684\u6570\u636e\uff0c\u8c03\u6574\u53d8\u9891\u5668\u7684\u53c2\u6570\u7b49\u3002<\/p>\n<\/p>\n<p><h4>2\u3001\u5d4c\u5165\u5f0f\u7cfb\u7edf<\/h4>\n<\/p>\n<p><p>\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u4e32\u53e3\u901a\u4fe1\u7528\u4e8e\u5fae\u63a7\u5236\u5668\u3001\u5355\u7247\u673a\u3001\u5f00\u53d1\u677f\u7b49\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u4e32\u53e3\u901a\u4fe1\u53ef\u4ee5\u8c03\u8bd5\u5355\u7247\u673a\u7684\u7a0b\u5e8f\uff0c\u8bfb\u53d6\u5f00\u53d1\u677f\u4e0a\u7684\u4f20\u611f\u5668\u6570\u636e\uff0c\u63a7\u5236\u5916\u90e8\u8bbe\u5907\u7b49\u3002<\/p>\n<\/p>\n<p><h4>3\u3001\u4f20\u611f\u5668\u6570\u636e\u91c7\u96c6<\/h4>\n<\/p>\n<p><p>\u5728\u4f20\u611f\u5668\u6570\u636e\u91c7\u96c6\u4e2d\uff0c\u4e32\u53e3\u901a\u4fe1\u7528\u4e8e\u4f20\u611f\u5668\u4e0e\u8ba1\u7b97\u673a\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u4e32\u53e3\u901a\u4fe1\u53ef\u4ee5\u8bfb\u53d6\u6e29\u5ea6\u4f20\u611f\u5668\u7684\u6570\u636e\uff0c\u8bb0\u5f55\u73af\u5883\u53c2\u6570\uff0c\u5206\u6790\u4f20\u611f\u5668\u7684\u8f93\u51fa\u7b49\u3002<\/p>\n<\/p>\n<p><h3>\u4e03\u3001\u4e32\u53e3\u901a\u4fe1\u7684\u5e38\u89c1\u95ee\u9898\u548c\u89e3\u51b3\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u5728\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u5e38\u89c1\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u89c1\u95ee\u9898\u53ca\u5176\u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u4e32\u53e3\u65e0\u6cd5\u6253\u5f00<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u4e32\u53e3\u65e0\u6cd5\u6253\u5f00\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u4ee5\u4e0b\u539f\u56e0\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u4e32\u53e3\u88ab\u5176\u4ed6\u7a0b\u5e8f\u5360\u7528\uff1a\u5173\u95ed\u5176\u4ed6\u5360\u7528\u4e32\u53e3\u7684\u7a0b\u5e8f\u3002<\/li>\n<li>\u4e32\u53e3\u53f7\u9519\u8bef\uff1a\u68c0\u67e5\u4e32\u53e3\u53f7\u662f\u5426\u6b63\u786e\u3002<\/li>\n<li>\u6743\u9650\u95ee\u9898\uff1a\u5728Linux\u7cfb\u7edf\u4e0a\uff0c\u786e\u4fdd\u5177\u6709\u8bbf\u95ee\u4e32\u53e3\u7684\u6743\u9650\u3002<\/li>\n<\/ul>\n<p><h4>2\u3001\u6570\u636e\u4f20\u8f93\u9519\u8bef<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u6570\u636e\u4f20\u8f93\u51fa\u73b0\u9519\u8bef\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u4ee5\u4e0b\u539f\u56e0\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u6ce2\u7279\u7387\u4e0d\u5339\u914d\uff1a\u68c0\u67e5\u53d1\u9001\u7aef\u548c\u63a5\u6536\u7aef\u7684\u6ce2\u7279\u7387\u662f\u5426\u4e00\u81f4\u3002<\/li>\n<li>\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\u3001\u6821\u9a8c\u4f4d\u4e0d\u5339\u914d\uff1a\u68c0\u67e5\u53d1\u9001\u7aef\u548c\u63a5\u6536\u7aef\u7684\u53c2\u6570\u8bbe\u7f6e\u662f\u5426\u4e00\u81f4\u3002<\/li>\n<li>\u6570\u636e\u7ebf\u95ee\u9898\uff1a\u68c0\u67e5\u6570\u636e\u7ebf\u662f\u5426\u8fde\u63a5\u6b63\u786e\uff0c\u662f\u5426\u6709\u635f\u574f\u3002<\/li>\n<\/ul>\n<p><h4>3\u3001\u6570\u636e\u4e22\u5931<\/h4>\n<\/p>\n<p><p>\u5982\u679c\u6570\u636e\u4e22\u5931\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u4ee5\u4e0b\u539f\u56e0\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u7f13\u51b2\u533a\u6ea2\u51fa\uff1a\u589e\u52a0\u7f13\u51b2\u533a\u5927\u5c0f\uff0c\u6216\u8005\u4f18\u5316\u6570\u636e\u5904\u7406\u901f\u5ea6\u3002<\/li>\n<li>\u6570\u636e\u4f20\u8f93\u901f\u7387\u8fc7\u9ad8\uff1a\u964d\u4f4e\u6ce2\u7279\u7387\uff0c\u6216\u8005\u589e\u52a0\u6570\u636e\u6d41\u63a7\u5236\u3002<\/li>\n<\/ul>\n<p><h3>\u516b\u3001\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n<p><p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528Python\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<p>import threading<\/p>\n<p>def calculate_checksum(data):<\/p>\n<p>    checksum = 0<\/p>\n<p>    for byte in data:<\/p>\n<p>        checksum ^= byte<\/p>\n<p>    return checksum<\/p>\n<p>def read_from_port(ser):<\/p>\n<p>    while True:<\/p>\n<p>        try:<\/p>\n<p>            received_data = ser.read(14)  # \u8bfb\u53d614\u4e2a\u5b57\u8282\u7684\u6570\u636e<\/p>\n<p>            data = received_data[:-1]<\/p>\n<p>            received_checksum = received_data[-1]<\/p>\n<p>            if calculate_checksum(data) == received_checksum:<\/p>\n<p>                print(f&quot;Received: {data.decode()}&quot;)<\/p>\n<p>            else:<\/p>\n<p>                print(&quot;Data is corrupted&quot;)<\/p>\n<p>        except Exception as e:<\/p>\n<p>            print(f&quot;Error: {e}&quot;)<\/p>\n<p>def write_to_port(ser):<\/p>\n<p>    while True:<\/p>\n<p>        try:<\/p>\n<p>            message = input(&quot;Enter message: &quot;)<\/p>\n<p>            data = message.encode()<\/p>\n<p>            checksum = calculate_checksum(data)<\/p>\n<p>            ser.write(data + bytes([checksum]))<\/p>\n<p>        except Exception as e:<\/p>\n<p>            print(f&quot;Error: {e}&quot;)<\/p>\n<h2><strong>\u914d\u7f6e\u4e32\u53e3\u53c2\u6570<\/strong><\/h2>\n<p>ser = serial.Serial(&#39;COM3&#39;, 9600, bytesize=serial.EIGHTBITS, stopbits=serial.STOPBITS_ONE, parity=serial.PARITY_NONE)<\/p>\n<h2><strong>\u521b\u5efa\u5e76\u542f\u52a8\u8bfb\u53d6\u7ebf\u7a0b<\/strong><\/h2>\n<p>read_thread = threading.Thread(target=read_from_port, args=(ser,))<\/p>\n<p>read_thread.start()<\/p>\n<h2><strong>\u521b\u5efa\u5e76\u542f\u52a8\u5199\u5165\u7ebf\u7a0b<\/strong><\/h2>\n<p>write_thread = threading.Thread(target=write_to_port, args=(ser,))<\/p>\n<p>write_thread.start()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u6bb5\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528PySerial\u5e93\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\uff0c\u5305\u62ec\u914d\u7f6e\u4e32\u53e3\u53c2\u6570\u3001\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3001\u5904\u7406\u63a5\u6536\u7684\u6570\u636e\uff0c\u5e76\u4f7f\u7528\u7ebf\u7a0b\u5b9e\u73b0\u5e76\u884c\u5904\u7406\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u6548\u7684\u4e32\u53e3\u901a\u4fe1\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u4e32\u53e3\u901a\u4fe1\u7684\u57fa\u672c\u6b65\u9aa4\u662f\u4ec0\u4e48\uff1f<\/strong><br \/>\u5728Python\u4e2d\u5b9e\u73b0\u4e32\u53e3\u901a\u4fe1\u7684\u57fa\u672c\u6b65\u9aa4\u5305\u62ec\u5b89\u88c5\u76f8\u5173\u5e93\u3001\u914d\u7f6e\u4e32\u53e3\u53c2\u6570\u3001\u6253\u5f00\u4e32\u53e3\u3001\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u548c\u5173\u95ed\u4e32\u53e3\u3002\u5e38\u7528\u7684\u5e93\u6709<code>pySerial<\/code>\uff0c\u53ef\u4ee5\u901a\u8fc7<code>pip install pyserial<\/code>\u8fdb\u884c\u5b89\u88c5\u3002\u914d\u7f6e\u4e32\u53e3\u65f6\u9700\u8981\u8bbe\u7f6e\u6ce2\u7279\u7387\u3001\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\u548c\u6821\u9a8c\u4f4d\u7b49\u53c2\u6570\u3002\u6253\u5f00\u4e32\u53e3\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>read()<\/code>\u548c<code>write()<\/code>\u65b9\u6cd5\u8fdb\u884c\u6570\u636e\u7684\u63a5\u6536\u548c\u53d1\u9001\uff0c\u6700\u540e\u4f7f\u7528<code>close()<\/code>\u65b9\u6cd5\u5173\u95ed\u4e32\u53e3\u4ee5\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n<p><strong>\u6211\u5e94\u8be5\u9009\u62e9\u54ea\u4e2aPython\u5e93\u6765\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\uff1f<\/strong><br \/>\u5bf9\u4e8e\u4e32\u53e3\u901a\u4fe1\uff0c<code>pySerial<\/code>\u662f\u6700\u53d7\u6b22\u8fce\u7684\u5e93\u4e4b\u4e00\uff0c\u5b83\u652f\u6301\u591a\u79cd\u5e73\u53f0\uff0c\u529f\u80fd\u5f3a\u5927\u4e14\u6613\u4e8e\u4f7f\u7528\u3002\u6b64\u5916\uff0c<code>pySerial<\/code>\u53ef\u4ee5\u5904\u7406\u4e32\u53e3\u7684\u6240\u6709\u57fa\u672c\u64cd\u4f5c\uff0c\u5305\u62ec\u8bfb\u53d6\u3001\u5199\u5165\u548c\u7ba1\u7406\u4e32\u53e3\u53c2\u6570\u3002\u5982\u679c\u9700\u8981\u66f4\u590d\u6742\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u8003\u8651\u5176\u4ed6\u5e93\uff0c\u5982<code>pySerial-asyncio<\/code>\uff0c\u5b83\u652f\u6301\u5f02\u6b65\u64cd\u4f5c\uff0c\u9002\u5408\u9700\u8981\u9ad8\u6548\u5904\u7406\u591a\u4e2a\u4e32\u53e3\u7684\u5e94\u7528\u3002<\/p>\n<p><strong>\u5982\u4f55\u6392\u67e5Python\u4e32\u53e3\u901a\u4fe1\u4e2d\u7684\u5e38\u89c1\u95ee\u9898\uff1f<\/strong><br \/>\u5728\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u65f6\uff0c\u5e38\u89c1\u95ee\u9898\u5305\u62ec\u4e32\u53e3\u672a\u6b63\u786e\u6253\u5f00\u3001\u6ce2\u7279\u7387\u8bbe\u7f6e\u4e0d\u4e00\u81f4\u3001\u6570\u636e\u683c\u5f0f\u4e0d\u5339\u914d\u7b49\u3002\u9996\u5148\uff0c\u786e\u4fdd\u4e32\u53e3\u53f7\u548c\u6ce2\u7279\u7387\u5728\u53d1\u9001\u7aef\u548c\u63a5\u6536\u7aef\u4e00\u81f4\u3002\u53ef\u4ee5\u901a\u8fc7<code>pySerial<\/code>\u63d0\u4f9b\u7684<code>list_ports<\/code>\u529f\u80fd\u67e5\u770b\u53ef\u7528\u4e32\u53e3\u3002\u5982\u679c\u901a\u4fe1\u4e0d\u6b63\u5e38\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528\u4e32\u53e3\u76d1\u89c6\u5de5\u5177\uff08\u5982PuTTY\u6216CoolTerm\uff09\u8fdb\u884c\u6d4b\u8bd5\uff0c\u4ee5\u786e\u8ba4\u95ee\u9898\u662f\u5426\u51fa\u5728Python\u4ee3\u7801\u4e0a\u3002\u540c\u65f6\uff0c\u786e\u4fdd\u5728\u53d1\u9001\u6570\u636e\u524d\u4e32\u53e3\u5df2\u7ecf\u6210\u529f\u6253\u5f00\uff0c\u5e76\u5728\u53d1\u9001\u540e\u53ca\u65f6\u5173\u95ed\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8fdb\u884c\u4e32\u53e3\u901a\u4fe1\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528PySerial\u5e93\u3001\u914d\u7f6e\u4e32\u53e3\u53c2\u6570\u3001\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u3001\u5904\u7406\u63a5\u6536\u7684\u6570\u636e\u3002\u5176\u4e2d [&hellip;]","protected":false},"author":3,"featured_media":1164319,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1164310"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1164310"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1164310\/revisions"}],"predecessor-version":[{"id":1164320,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1164310\/revisions\/1164320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1164319"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1164310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1164310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1164310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}