{"id":689,"date":"2025-11-28T20:47:29","date_gmt":"2025-11-28T12:47:29","guid":{"rendered":"https:\/\/www.gladguang.cn\/?p=689"},"modified":"2025-11-28T21:05:14","modified_gmt":"2025-11-28T13:05:14","slug":"%e8%87%aa%e5%88%b6rs485-%e8%b0%83%e8%af%95%e5%b7%a5%e5%85%b7","status":"publish","type":"post","link":"https:\/\/www.gladguang.cn\/index.php\/2025\/11\/28\/%e8%87%aa%e5%88%b6rs485-%e8%b0%83%e8%af%95%e5%b7%a5%e5%85%b7\/","title":{"rendered":"\u81ea\u5236RS485 \u8c03\u8bd5\u5de5\u5177"},"content":{"rendered":"

\n \u524d\u8a00\uff1a\u624b\u91cc\u6070\u597d\u6709\u4e00\u4e2a\u7a7a\u4f59\u7684ESP32\u3002\u60f3\u7740\u53ef\u4ee5\u505a\u4e00\u4e2aRS485\u4e32\u53e3\u8c03\u8bd5\u5de5\u5177\u3002\n<\/p><\/blockquote>\n

\u8d44\u6e90\uff1aesp32\u8bfb\u53d6RS485\u4e32\u53e3\u5c0f\u5de5\u5177<\/a><\/p>\n

\u529f\u80fd<\/h3>\n

1.esp32\u5728AP\u6a21\u5f0f\u4e0b\uff0c\u624b\u673a\u8fde\u63a5\u4e0aesp32\u7684wifi\u3002
\n2.\u7528\u624b\u673a\u6d4f\u89c8\u5668\u5b9e\u73b0\u5728\u7ebf\u8c03\u8bd5RS485.<\/p>\n

\u786c\u4ef6\u8981\u6c42<\/h3>\n

1.esp32\uff0c\u5927\u698217\u5757\u3002(\u4fbf\u5b9c\u70b9\u53ef\u4ee5\u7528esp8266\u4ee3\u66ff\uff0c\u6dd8\u5b9d10\u5757\u5de6\u53f3)
\n2.MAX485\u6a21\u5757\uff0c\u5927\u69822\u5757\u5de6\u53f3\u3002\u529f\u80fd\u4e3attl\u8f6cRS485\u3002\u4f18\u70b9\u4fbf\u5b9c\uff0c2\u5757\u5de6\u53f3\u3002\u7f3a\u70b9\u662f\u65e0\u6cd5\u81ea\u52a8\u6d41\u63a7\u3002\u53ef\u4ee5\u9009\u81ea\u52a8\u6d41\u63a7\u7684\u6a21\u5757\uff0c\u5927\u698210\u5757\u5de6\u53f3\u3002
\n3.\u7535\u6e90\u3002\u53ef\u4ee5\u7528\u5145\u7535\u5b9d\u3002
\n4.\u4e0d\u8981\u94b1\u7684\u4fe1\u53f7\u7ebf\u3002
\n5.micro USB\u7ebf\uff08\u5e26\u6709\u901a\u8baf\u529f\u80fd\uff09\u7528\u4e8e\u8c03\u8bd5\u3002<\/p>\n

\u6b65\u9aa4<\/h3>\n

\u8f6f\u4ef6\u90e8\u5206<\/h4>\n
    \n
  1. \u7535\u8111\u4e0b\u8f7d\u5b89\u88c5\u597dThonny<\/a>\uff0c\u5b98\u7f51\u4e0b\u8f7d\u6e90\u4e3agithub\uff0c\u5341\u5206\u7f13\u6162\u3002\u53ef\u4ee5\u70b9\u6b64\u4e0b\u8f7d<\/a>\u3002\u7535\u8111\u5b89\u88c5\u597dCH340\u7684\u9a71\u52a8\uff0c\u70b9\u6b64\u4e0b\u8f7d<\/a>\u3002
    \n2.\u5c06\u56fa\u4ef6\u5237\u6210micropython\u3002
    \n3.\u6253\u5f00\u5b89\u88c5\u597d\u7684Thonny\u8f6f\u4ef6\u3002\u70b9\u51fb\u8fd0\u884c\u2014\u2014\u914d\u7f6e\u89e3\u91ca\u5668\u2014\u2014\u89e3\u91ca\u5668\u3002\u5728\u754c\u9762\u4e2d\u9009\u62e9\u54ea\u79cd\u89e3\u91ca\u5668\uff0cmicropython(esp32)\u3002\u672c\u6b21\u4f7f\u7528\u7684\u662fesp32.\u5728\u7aef\u53e3\u9009\u62e9esp32\u7684com\u53e3\u3002\u7136\u540e\u70b9\u51fb\u5b89\u88c5\u6216\u8005\u66f4\u65b0micropython\u3002\u6309\u8981\u6c42\u4e0b\u8f7d\uff0c\u7b49\u5f85\u4e0b\u8f7d\u5b8c\u6210\u3002
    \n4.\u5728Tonny\u7684\u89c6\u56fe\uff0c\u628a\u6587\u4ef6\u52fe\u9009\u4e0a\u3002\u7136\u540e\u65b0\u5efa\u4e00\u4e2amain.py\u6587\u4ef6\u3002\u7136\u540e\u628a\u7a0b\u5e8f\u8f93\u5165\uff1a<\/li>\n<\/ol>\n
    import network\nimport socket\nfrom machine import UART, Pin\nimport time\nimport gc\nimport json\n# \u5168\u5c40\u53d8\u91cf\nrs485_data = []\nmax_data_length = 1000\ncurrent_baudrate = 4800\ndisplay_format = \"ascii\"\nuart_instance = None  # \u5168\u5c40UART\u5b9e\u4f8b\n# \u914d\u7f6eAP\u6a21\u5f0f\uff08\u5f00\u653e\u7f51\u7edc\uff09\ndef setup_ap():\n    ap = network.WLAN(network.AP_IF)\n    ap.active(True)\n    # \u521b\u5efa\u5f00\u653e\u7f51\u7edc\uff0c\u65e0\u9700\u5bc6\u7801\n    ap.config(essid='ESP32-RS485-Web', password='', authmode=0)\n    ap.ifconfig(('192.168.4.1', '255.255.255.0', '192.168.4.1', '8.8.8.8'))\n\n    while not ap.active():\n        pass\n\n    print('AP\u6a21\u5f0f\u5df2\u542f\u52a8 - \u5f00\u653e\u7f51\u7edc')\n    print('\u7f51\u7edc\u540d\u79f0: ESP32-RS485-Web')\n    print('IP\u5730\u5740: 192.168.4.1')\n    return ap\n# \u521d\u59cb\u5316RS485\u4e32\u53e3\ndef setup_rs485(baudrate=4800):\n    global uart_instance\n    # \u5982\u679c\u5df2\u6709\u5b9e\u4f8b\uff0c\u5148\u5173\u95ed\n    if uart_instance:\n        try:\n            uart_instance.deinit()\n            time.sleep(0.1)\n        except:\n            pass\n\n    # \u521b\u5efa\u65b0\u7684UART\u5b9e\u4f8b\n    uart_instance = UART(2, baudrate=baudrate, bits=8, parity=None, stop=1, rx=16, tx=17)\n    print(f\"RS485\u4e32\u53e3\u5df2\u521d\u59cb\u5316\uff0c\u6ce2\u7279\u7387: {baudrate}\")\n    return uart_instance\n# \u8bfb\u53d6RS485\u6570\u636e\uff08\u589e\u5f3a\u7a33\u5b9a\u6027\uff09\ndef read_rs485_data(uart):\n    global rs485_data\n    try:\n        if uart and uart.any():\n            data = uart.read()\n            if data:\n                timestamp = time.ticks_ms()\n                hex_data = data.hex()\n                ascii_data = ''.join([chr(b) if 32 <= b < 127 else '.' for b in data])\n\n                # \u65b0\u6570\u636e\u63d2\u5165\u5230\u524d\u9762\n                rs485_data.insert(0, {\n                    'timestamp': timestamp,\n                    'hex': hex_data,\n                    'ascii': ascii_data,\n                    'length': len(data)\n                })\n\n                # \u9650\u5236\u6570\u636e\u5217\u8868\u957f\u5ea6\n                if len(rs485_data) > max_data_length:\n                    rs485_data = rs485_data[:max_data_length]\n\n                print(f\"\u6536\u5230RS485\u6570\u636e: {hex_data} (ASCII: {ascii_data})\")\n                return True\n    except Exception as e:\n        print(f\"\u8bfb\u53d6RS485\u6570\u636e\u9519\u8bef: {e}\")\n        # \u5c1d\u8bd5\u91cd\u65b0\u521d\u59cb\u5316\u4e32\u53e3\n        try:\n            setup_rs485(current_baudrate)\n        except:\n            pass\n\n    return False\n# \u53d1\u9001\u6570\u636e\u5230RS485\ndef send_rs485_data(uart, data_str, data_type='hex'):\n    try:\n        if not uart:\n            return False, \"\u4e32\u53e3\u672a\u521d\u59cb\u5316\"\n\n        if data_type == 'hex':\n            data_str = data_str.replace(' ', '').replace('\\n', '').replace('\\r', '')\n            if len(data_str) % 2 != 0:\n                return False, \"\u5341\u516d\u8fdb\u5236\u6570\u636e\u957f\u5ea6\u5fc5\u987b\u4e3a\u5076\u6570\"\n\n            try:\n                data_bytes = bytes.fromhex(data_str)\n            except ValueError:\n                return False, \"\u65e0\u6548\u7684\u5341\u516d\u8fdb\u5236\u6570\u636e\"\n\n        elif data_type == 'ascii':\n            data_bytes = data_str.encode('utf-8')\n        else:\n            return False, \"\u672a\u77e5\u7684\u6570\u636e\u7c7b\u578b\"\n\n        uart.write(data_bytes)\n        print(f\"\u53d1\u9001\u6570\u636e\u5230RS485: {data_bytes.hex()}\")\n        return True, \"\u6570\u636e\u53d1\u9001\u6210\u529f\"\n\n    except Exception as e:\n        return False, f\"\u53d1\u9001\u5931\u8d25: {str(e)}\"\n# \u751f\u6210\u6570\u636e\u8868\u683cHTML\ndef generate_data_table():\n    global rs485_data, display_format\n\n    data_rows = \"\"\n    if not rs485_data:\n        data_rows = \"<tr><td colspan='4' style='text-align: center;'>\u6682\u65e0\u6570\u636e<\/td><\/tr>\"\n    else:\n        for i, data in enumerate(rs485_data[:50]):\n            time_str = f\"{time.ticks_ms() - data['timestamp']}ms\u524d\"\n            data_content = data['hex'] if display_format == \"hex\" else data['ascii']\n\n            data_rows += f\"\"\"\n            <tr>\n                <td>{i+1}<\/td>\n                <td>{time_str}<\/td>\n                <td>{data_content}<\/td>\n                <td>{data['length']}<\/td>\n            <\/tr>\n            \"\"\"\n\n    return data_rows\n# \u751f\u6210\u7f51\u9875HTML\ndef generate_html(status_message=\"\"):\n    global rs485_data, current_baudrate, display_format\n\n    html = f\"\"\"\n    <!DOCTYPE html>\n    <html>\n    <head>\n        <title>ESP32 RS485\u76d1\u63a7<\/title>\n        <meta charset=\"UTF-8\">\n        <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n        <style>\n            body {{ font-family: Arial, sans-serif; margin: 20px; background-color: #f5f5f5; }}\n            .container {{ max-width: 1200px; margin: 0 auto; background: white; padding: 20px; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }}\n            h1 {{ color: #333; text-align: center; }}\n            .section {{ margin: 20px 0; padding: 15px; border: 1px solid #ddd; border-radius: 5px; }}\n            table {{ width: 100%; border-collapse: collapse; margin: 10px 0; }}\n            th, td {{ border: 1px solid #ddd; padding: 8px; text-align: left; }}\n            th {{ background-color: #f2f2f2; }}\n            .form-group {{ margin: 10px 0; }}\n            label {{ display: inline-block; width: 150px; }}\n            input, select, textarea {{ padding: 5px; margin: 5px 0; }}\n            button {{ background-color: #4CAF50; color: white; padding: 10px 15px; border: none; border-radius: 4px; cursor: pointer; margin: 5px; }}\n            button:hover {{ background-color: #45a049; }}\n            .btn-danger {{ background-color: #f44336; }}\n            .btn-danger:hover {{ background-color: #da190b; }}\n            .status {{ padding: 10px; margin: 10px 0; border-radius: 4px; }}\n            .success {{ background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }}\n            .error {{ background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }}\n            #data-table {{ max-height: 400px; overflow-y: auto; display: block; }}\n            .new-data {{ background-color: #e8f5e8; transition: background-color 2s; }}\n            .display-selector {{ margin-left: 20px; }}\n            .connection-status {{ display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 5px; }}\n            .connected {{ background-color: #4CAF50; }}\n            .disconnected {{ background-color: #f44336; }}\n        <\/style>\n        <script>\n            var currentDisplayFormat = '{display_format}';\n            var isConnected = true;\n\n            \/\/ \u5237\u65b0\u6570\u636e\u8868\u683c\n            function refreshData() {{\n                var xhr = new XMLHttpRequest();\n                xhr.onreadystatechange = function() {{\n                    if (xhr.readyState === 4) {{\n                        if (xhr.status === 200) {{\n                            document.getElementById('data-body').innerHTML = xhr.responseText;\n                            document.getElementById('data-count').innerText = document.getElementById('data-body').rows.length;\n\n                            \/\/ \u9ad8\u4eae\u65b0\u6570\u636e\n                            var rows = document.getElementById('data-body').getElementsByTagName('tr');\n                            if (rows.length > 0) {{\n                                rows[0].classList.add('new-data');\n                                setTimeout(function() {{\n                                    if (rows.length > 0) {{\n                                        rows[0].classList.remove('new-data');\n                                    }}\n                                }}, 2000);\n                            }}\n                            updateConnectionStatus(true);\n                        }} else {{\n                            updateConnectionStatus(false);\n                        }}\n                    }}\n                }};\n                xhr.open('GET', '\/data?format=' + currentDisplayFormat, true);\n                xhr.timeout = 5000;\n                xhr.ontimeout = function() {{\n                    updateConnectionStatus(false);\n                }};\n                xhr.send();\n            }}\n\n            \/\/ \u66f4\u65b0\u8fde\u63a5\u72b6\u6001\u663e\u793a\n            function updateConnectionStatus(connected) {{\n                isConnected = connected;\n                var statusElement = document.getElementById('connection-status');\n                var statusText = document.getElementById('connection-status-text');\n\n                if (connected) {{\n                    statusElement.className = 'connection-status connected';\n                    statusText.innerText = '\u5df2\u8fde\u63a5';\n                    statusText.style.color = '#4CAF50';\n                }} else {{\n                    statusElement.className = 'connection-status disconnected';\n                    statusText.innerText = '\u8fde\u63a5\u4e2d\u65ad';\n                    statusText.style.color = '#f44336';\n                }}\n            }}\n\n            \/\/ \u5207\u6362\u663e\u793a\u683c\u5f0f\n            function switchDisplayFormat() {{\n                var formatSelect = document.getElementById('display-format');\n                currentDisplayFormat = formatSelect.value;\n\n                var header = document.getElementById('data-content-header');\n                header.innerText = currentDisplayFormat === 'hex' ? '\u6570\u636e\u5185\u5bb9 (\u5341\u516d\u8fdb\u5236)' : '\u6570\u636e\u5185\u5bb9 (ASCII)';\n\n                refreshData();\n            }}\n\n            \/\/ \u4fee\u6539\u6ce2\u7279\u7387\n            function updateBaudrate() {{\n                var baudrate = document.getElementById('baudrate').value;\n                var xhr = new XMLHttpRequest();\n                xhr.open('POST', '\/baudrate', true);\n                xhr.setRequestHeader('Content-Type', 'application\/x-www-form-urlencoded');\n                xhr.onload = function() {{\n                    if (xhr.status === 200) {{\n                        var response = JSON.parse(xhr.responseText);\n                        if (response.success) {{\n                            showStatus('\u6ce2\u7279\u7387\u5df2\u4fee\u6539\u4e3a: ' + baudrate, 'success');\n                            document.getElementById('current-baudrate').innerText = baudrate;\n                            \/\/ \u4e0d\u5237\u65b0\u9875\u9762\uff0c\u7ee7\u7eed\u6b63\u5e38\u6570\u636e\u66f4\u65b0\n                            refreshData();\n                        }} else {{\n                            showStatus('\u6ce2\u7279\u7387\u4fee\u6539\u5931\u8d25: ' + response.message, 'error');\n                        }}\n                    }} else {{\n                        showStatus('\u7f51\u7edc\u9519\u8bef\uff0c\u8bf7\u68c0\u67e5\u8fde\u63a5', 'error');\n                    }}\n                }};\n                xhr.onerror = function() {{\n                    showStatus('\u7f51\u7edc\u9519\u8bef\uff0c\u8bf7\u68c0\u67e5\u8fde\u63a5', 'error');\n                }};\n                xhr.send('baudrate=' + baudrate);\n                return false;\n            }}\n\n            \/\/ \u663e\u793a\u72b6\u6001\u6d88\u606f\n            function showStatus(message, type) {{\n                var statusDiv = document.getElementById('status-message');\n                statusDiv.innerHTML = '<div class=\"status ' + type + '\">' + message + '<\/div>';\n                setTimeout(function() {{\n                    statusDiv.innerHTML = '';\n                }}, 3000);\n            }}\n\n            \/\/ \u8bbe\u7f6e\u5b9a\u65f6\u5668\n            setInterval(refreshData, 1000);\n            window.onload = refreshData;\n        <\/script>\n    <\/head>\n    <body>\n        <div class=\"container\">\n            <h1>ESP32 RS485\u76d1\u63a7\u754c\u9762<\/h1>\n            <div id=\"status-message\"><\/div>\n\n            <!-- \u63a5\u6536\u6570\u636e -->\n            <div class=\"section\">\n                <h3>\u63a5\u6536\u6570\u636e (\u6700\u8fd150\u6761\uff0c\u65b0\u6570\u636e\u5728\u524d) \n                    <select id=\"display-format\" class=\"display-selector\" onchange=\"switchDisplayFormat()\">\n                        <option value=\"ascii\" {'selected' if display_format == 'ascii' else ''}>ASCII<\/option>\n                        <option value=\"hex\" {'selected' if display_format == 'hex' else ''}>\u5341\u516d\u8fdb\u5236<\/option>\n                    <\/select>\n                    <span style=\"margin-left: 20px;\">\n                        <span id=\"connection-status\" class=\"connection-status connected\"><\/span>\n                        <span id=\"connection-status-text\" style=\"color: #4CAF50;\">\u5df2\u8fde\u63a5<\/span>\n                    <\/span>\n                <\/h3>\n                <div id=\"data-table\">\n                    <table>\n                        <thead>\n                            <tr>\n                                <th>\u5e8f\u53f7<\/th>\n                                <th>\u65f6\u95f4<\/th>\n                                <th id=\"data-content-header\">\u6570\u636e\u5185\u5bb9 (ASCII)<\/th>\n                                <th>\u957f\u5ea6<\/th>\n                            <\/tr>\n                        <\/thead>\n                        <tbody id=\"data-body\">\n                            {generate_data_table()}\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n            <\/div>\n\n            <!-- \u7cfb\u7edf\u72b6\u6001 -->\n            <div class=\"section\">\n                <h3>\u7cfb\u7edf\u72b6\u6001<\/h3>\n                <p><strong>IP\u5730\u5740:<\/strong> 192.168.4.1<\/p>\n                <p><strong>\u5f53\u524d\u6ce2\u7279\u7387:<\/strong> <span id=\"current-baudrate\">{current_baudrate}<\/span> bps<\/p>\n                <p><strong>\u6570\u636e\u6761\u6570:<\/strong> <span id=\"data-count\">{len(rs485_data)}<\/span><\/p>\n            <\/div>\n\n            <!-- \u4e32\u53e3\u914d\u7f6e -->\n            <div class=\"section\">\n                <h3>\u4e32\u53e3\u914d\u7f6e<\/h3>\n                <form onsubmit=\"return updateBaudrate()\">\n                    <div class=\"form-group\">\n                        <label for=\"baudrate\">\u6ce2\u7279\u7387:<\/label>\n                        <select id=\"baudrate\" name=\"baudrate\">\n                            <option value=\"4800\" {'selected' if current_baudrate == 4800 else ''}>4800<\/option>\n                            <option value=\"9600\" {'selected' if current_baudrate == 9600 else ''}>9600<\/option>\n                            <option value=\"19200\" {'selected' if current_baudrate == 19200 else ''}>19200<\/option>\n                            <option value=\"38400\" {'selected' if current_baudrate == 38400 else ''}>38400<\/option>\n                            <option value=\"57600\" {'selected' if current_baudrate == 57600 else ''}>57600<\/option>\n                            <option value=\"115200\" {'selected' if current_baudrate == 115200 else ''}>115200<\/option>\n                        <\/select>\n                        <button type=\"submit\">\u5e94\u7528\u6ce2\u7279\u7387<\/button>\n                    <\/div>\n                <\/form>\n            <\/div>\n\n            <!-- \u6570\u636e\u63a7\u5236 -->\n            <div class=\"section\">\n                <h3>\u6570\u636e\u63a7\u5236<\/h3>\n                <button type=\"button\" class=\"btn-danger\" onclick=\"clearData()\">\u6e05\u9664\u6240\u6709\u6570\u636e<\/button>\n            <\/div>\n\n            <!-- \u53d1\u9001\u6570\u636e -->\n            <div class=\"section\">\n                <h3>\u53d1\u9001\u6570\u636e<\/h3>\n                <form method=\"post\" action=\"\/send\" onsubmit=\"return sendData()\">\n                    <div class=\"form-group\">\n                        <label for=\"data_type\">\u6570\u636e\u7c7b\u578b:<\/label>\n                        <select id=\"data_type\" name=\"data_type\">\n                            <option value=\"hex\">\u5341\u516d\u8fdb\u5236<\/option>\n                            <option value=\"ascii\">ASCII\u6587\u672c<\/option>\n                        <\/select>\n                    <\/div>\n                    <div class=\"form-group\">\n                        <label for=\"send_data\">\u53d1\u9001\u6570\u636e:<\/label><br>\n                        <textarea id=\"send_data\" name=\"send_data\" rows=\"3\" cols=\"50\" placeholder=\"\u8f93\u5165\u8981\u53d1\u9001\u7684\u6570\u636e...\"><\/textarea>\n                    <\/div>\n                    <div class=\"form-group\">\n                        <button type=\"submit\">\u53d1\u9001\u6570\u636e<\/button>\n                    <\/div>\n                <\/form>\n            <\/div>\n        <\/div>\n    <\/body>\n    <\/html>\n    \"\"\"\n    return html\n# \u5904\u7406HTTP\u8bf7\u6c42\ndef handle_http_request(client_socket, uart):\n    global rs485_data, current_baudrate, display_format\n\n    try:\n        request = client_socket.recv(1024).decode('utf-8')\n        print(\"\u6536\u5230HTTP\u8bf7\u6c42\")\n\n        request_line = request.split('\\r\\n')[0]\n        method, path, _ = request_line.split(' ')\n\n        response = \"\"\n        content_type = \"text\/html\"\n        status_message = \"\"\n\n        if method == 'GET' and path == '\/':\n            response = generate_html()\n\n        elif method == 'GET' and path.startswith('\/data'):\n            if 'format=' in path:\n                format_param = path.split('format=')[1].split('&')[0]\n                display_format = format_param if format_param in ['hex', 'ascii'] else 'ascii'\n\n            response = generate_data_table()\n            content_type = \"text\/html\"\n\n        elif method == 'POST':\n            if path == '\/baudrate':\n                content_length = 0\n                for line in request.split('\\r\\n'):\n                    if line.startswith('Content-Length:'):\n                        content_length = int(line.split(':')[1].strip())\n                        break\n\n                if content_length > 0:\n                    post_data = request.split('\\r\\n\\r\\n')[-1][:content_length]\n                    params = {}\n                    for pair in post_data.split('&'):\n                        key, value = pair.split('=')\n                        params[key] = value\n\n                    new_baudrate = int(params.get('baudrate', '4800'))\n                    try:\n                        setup_rs485(new_baudrate)\n                        current_baudrate = new_baudrate\n                        print(f\"\u6ce2\u7279\u7387\u5df2\u4fee\u6539\u4e3a: {new_baudrate}\")\n                        # \u8fd4\u56deJSON\u54cd\u5e94\u800c\u4e0d\u662f\u91cd\u5b9a\u5411\n                        response = json.dumps({\"success\": True, \"message\": \"\u6ce2\u7279\u7387\u4fee\u6539\u6210\u529f\"})\n                        content_type = \"application\/json\"\n                    except Exception as e:\n                        response = json.dumps({\"success\": False, \"message\": str(e)})\n                        content_type = \"application\/json\"\n\n            elif path == '\/send':\n                content_length = 0\n                for line in request.split('\\r\\n'):\n                    if line.startswith('Content-Length:'):\n                        content_length = int(line.split(':')[1].strip())\n                        break\n\n                if content_length > 0:\n                    post_data = request.split('\\r\\n\\r\\n')[-1][:content_length]\n                    params = {}\n                    for pair in post_data.split('&'):\n                        key, value = pair.split('=')\n                        params[key] = value\n\n                    data_type = params.get('data_type', 'hex')\n                    send_data = params.get('send_data', '')\n\n                    success, message = send_rs485_data(uart, send_data, data_type)\n                    if success:\n                        status_message = f\"<div class='status success'>{message}<\/div>\"\n                    else:\n                        status_message = f\"<div class='status error'>{message}<\/div>\"\n\n            elif path == '\/clear':\n                rs485_data = []\n                print(\"\u6570\u636e\u5df2\u6e05\u9664\")\n                status_message = \"<div class='status success'>\u6570\u636e\u5df2\u6e05\u9664<\/div>\"\n\n            if content_type == \"text\/html\":\n                response = generate_html(status_message)\n\n        # \u53d1\u9001HTTP\u54cd\u5e94\n        http_response = f\"\"\"HTTP\/1.1 200 OK\nContent-Type: {content_type}; charset=utf-8\nConnection: close\n{response}\"\"\"\n\n        client_socket.send(http_response.encode('utf-8'))\n\n    except Exception as e:\n        print(\"HTTP\u5904\u7406\u9519\u8bef:\", e)\n    finally:\n        client_socket.close()\n# \u4e3b\u51fd\u6570\ndef main():\n    global current_baudrate, uart_instance\n\n    # \u8bbe\u7f6eAP\u6a21\u5f0f\uff08\u5f00\u653e\u7f51\u7edc\uff09\n    ap = setup_ap()\n\n    # \u521d\u59cb\u5316RS485\n    uart_instance = setup_rs485(current_baudrate)\n\n    # \u521b\u5efaTCP\u670d\u52a1\u5668\n    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)\n    server_socket.bind(('0.0.0.0', 80))\n    server_socket.listen(5)\n    server_socket.settimeout(0.5)\n\n    print(\"Web\u670d\u52a1\u5668\u5df2\u542f\u52a8\uff0c\u7aef\u53e3: 80\")\n    print(\"\u6253\u5f00\u6d4f\u89c8\u5668\u8bbf\u95ee: http:\/\/192.168.4.1\")\n\n    last_memory_clean = time.ticks_ms()\n\n    while True:\n        try:\n            # \u68c0\u67e5RS485\u6570\u636e\n            if uart_instance:\n                read_rs485_data(uart_instance)\n\n            # \u68c0\u67e5HTTP\u8fde\u63a5\n            try:\n                client_socket, addr = server_socket.accept()\n                print(\"\u5ba2\u6237\u7aef\u8fde\u63a5\u6765\u81ea:\", addr)\n                handle_http_request(client_socket, uart_instance)\n            except socket.timeout:\n                pass\n            except OSError as e:\n                if e.args[0] != 110:  # \u5ffd\u7565\u8d85\u65f6\u9519\u8bef\n                    raise\n\n            # \u5b9a\u671f\u6e05\u7406\u5185\u5b58\n            if time.ticks_ms() - last_memory_clean > 30000:\n                gc.collect()\n                last_memory_clean = time.ticks_ms()\n\n        except Exception as e:\n            print(\"\u4e3b\u5faa\u73af\u9519\u8bef:\", e)\n            time.sleep(1)\nif __name__ == \"__main__\":\n    main()\n\n<\/code><\/pre>\n
    5.\u70b9\u51fb\u4fdd\u5b58\u3002\u5728Tonny\u53f3\u4e0b\u89d2\u70b9\u51fbmicorpython(ESP32).COM7\u3002\u5728\u53f3\u952emain.py\uff0c\u70b9\u51fb\u4e0a\u4f20\u5230 \/\u3002\u7b49\u5f85\u7a0b\u5e8f\u4e0a\u4f20\u81f3esp32.\u81f3\u6b64\u8f6f\u4ef6\u90e8\u5206\u7ed3\u675f\u3002<\/p>\n
    \u786c\u4ef6\u8fde\u63a5<\/h4>\n
    1.esp32\u768416\u5f15\u811a\u63a5MAX485\u7684R0\u5f15\u811a
    \n2.esp32\u768417\u5f15\u811a\u63a5MAX485\u7684D1\u5f15\u811a
    \n3.\u5176\u4e2dMAX485\u7684RE\u3001DE\u5f15\u811a\u63a5GND
    \n4.esp32\u76843.3V\u5f15\u811a\u63a5MAX485\u7684VIN
    \n5.esp32\u7684GND\u63a5MAX485\u7684GND\u3002
    \n6.\u7528\u5145\u7535\u5b9d\u7ed9esp32\u4f9b\u7535\u3002
    \n7.\u6d4b\u8bd5\u7528\u7684RS485\u7684A\u7ebf\uff08\u6b63\u5dee\u5206\u7ebf\uff09\u63a5MAX485\u7684A\u7aef\u5b50\u3002
    \n8.\u6d4b\u8bd5\u7528\u7684RS485\u7684B\u7ebf\uff08\u6b63\u8d1f\u5dee\u5206\u7ebf\uff09\u63a5MAX485\u7684B\u7aef\u5b50\u3002<\/p>\n
    \u4f7f\u7528\u6559\u7a0b<\/h3>\n
    1.\u624b\u673a\u8fde\u63a5\u540d\u4e3a ESP32-RS485-Web \u7684wifi\u3002
    \n2.\u6d4f\u89c8\u5668\u8f93\u5165192.168.4.1
    \n3.\u7f51\u9875\u5982\u4e0b\uff1a
    \n
    \"\u754c\u97621\"<\/div>
    \n
    \"\u754c\u97622\"<\/div>
    \n
    \"\u754c\u97623\"<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"
    \u524d\u8a00\uff1a\u624b\u91cc\u6070\u597d\u6709\u4e00\u4e2a\u7a7a\u4f59\u7684ESP32\u3002\u60f3\u7740\u53ef\u4ee5\u505a\u4e00\u4e2aRS485\u4e32\u53e3\u8c03\u8bd5\u5de5\u5177\u3002 \u8d44\u6e90\uff1aesp32\u8bfb\u53d6RS485\u4e32 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114,132,86,6,85],"tags":[89,110,23,135],"class_list":["post-689","post","type-post","status-publish","format-standard","hentry","category-114","category-132","category-esp32","category-python","category-85","tag-eesp32","tag-micropython","tag-python","tag-rs485"],"_links":{"self":[{"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/posts\/689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/comments?post=689"}],"version-history":[{"count":3,"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/posts\/689\/revisions"}],"predecessor-version":[{"id":698,"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/posts\/689\/revisions\/698"}],"wp:attachment":[{"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/media?parent=689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/categories?post=689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gladguang.cn\/index.php\/wp-json\/wp\/v2\/tags?post=689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}