ethernet:\r\ntype: LAN8720\r\nmdc_pin: GPIO23\r\nmdio_pin: GPIO18\r\nclk_mode: GPIO0_IN\r\nphy_addr: 1\r\npower_pin: GPIO16<\/pre>\n<\/p>\n
--<\/p>\n
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- \n
- ETH_LAN8720_internal_clock.ino<\/a><\/li>\n
- \u4f7f\u7528Arduino\u5f00\u53d1ESP32\uff0806\uff09\uff1aEthernet\u7684\u4f7f\u7528\uff08\u57fa\u4e8eLAN8720\uff09<\/a><\/li>\n<\/ul>\n
\/*\r\n This sketch shows how to configure different external or internal clock sources for the Ethernet PHY\r\n*\/\r\n\r\n#include <ETH.h>\r\n\r\n\/* \r\n * ETH_CLOCK_GPIO0_IN - default: external clock from crystal oscillator\r\n * ETH_CLOCK_GPIO0_OUT - 50MHz clock from internal APLL output on GPIO0 - possibly an inverter is needed for LAN8720\r\n * ETH_CLOCK_GPIO16_OUT - 50MHz clock from internal APLL output on GPIO16 - possibly an inverter is needed for LAN8720\r\n * ETH_CLOCK_GPIO17_OUT - 50MHz clock from internal APLL inverted output on GPIO17 - tested with LAN8720\r\n*\/\r\n#ifdef ETH_CLK_MODE\r\n#undef ETH_CLK_MODE\r\n#endif\r\n#define ETH_CLK_MODE ETH_CLOCK_GPIO0_IN\r\n\r\n\/\/ Pin# of the enable signal for the external crystal oscillator (-1 to disable for internal APLL source)\r\n#define ETH_POWER_PIN 16\r\n\r\n\/\/ Type of the Ethernet PHY (LAN8720 or TLK110)\r\n#define ETH_TYPE ETH_PHY_LAN8720\r\n\r\n\/\/ I\u00b2C-address of Ethernet PHY (0 or 1 for LAN8720, 31 for TLK110)\r\n#define ETH_ADDR 1\r\n\r\n\/\/ Pin# of the I\u00b2C clock signal for the Ethernet PHY\r\n#define ETH_MDC_PIN 23\r\n\r\n\/\/ Pin# of the I\u00b2C IO signal for the Ethernet PHY\r\n#define ETH_MDIO_PIN 18\r\n\r\n\r\nstatic bool eth_connected = false;\r\n\r\nvoid WiFiEvent(WiFiEvent_t event) {\r\n switch (event) {\r\n case SYSTEM_EVENT_ETH_START:\r\n Serial.println(\"ETH Started\");\r\n \/\/set eth hostname here\r\n ETH.setHostname(\"esp32-ethernet\");\r\n break;\r\n case SYSTEM_EVENT_ETH_CONNECTED:\r\n Serial.println(\"ETH Connected\");\r\n break;\r\n case SYSTEM_EVENT_ETH_GOT_IP:\r\n Serial.print(\"ETH MAC: \");\r\n Serial.print(ETH.macAddress());\r\n Serial.print(\", IPv4: \");\r\n Serial.print(ETH.localIP());\r\n if (ETH.fullDuplex()) {\r\n Serial.print(\", FULL_DUPLEX\");\r\n }\r\n Serial.print(\", \");\r\n Serial.print(ETH.linkSpeed());\r\n Serial.println(\"Mbps\");\r\n eth_connected = true;\r\n break;\r\n case SYSTEM_EVENT_ETH_DISCONNECTED:\r\n Serial.println(\"ETH Disconnected\");\r\n eth_connected = false;\r\n break;\r\n case SYSTEM_EVENT_ETH_STOP:\r\n Serial.println(\"ETH Stopped\");\r\n eth_connected = false;\r\n break;\r\n default:\r\n break;\r\n }\r\n}\r\n\r\nvoid testClient(const char * host, uint16_t port) {\r\n Serial.print(\"\\nconnecting to \");\r\n Serial.println(host);\r\n\r\n WiFiClient client;\r\n if (!client.connect(host, port)) {\r\n Serial.println(\"connection failed\");\r\n return;\r\n }\r\n client.printf(\"GET \/ HTTP\/1.1\\r\\nHost: %s\\r\\n\\r\\n\", host);\r\n while (client.connected() && !client.available());\r\n while (client.available()) {\r\n Serial.write(client.read());\r\n }\r\n\r\n Serial.println(\"closing connection\\n\");\r\n client.stop();\r\n}\r\n\r\nvoid setup() {\r\n Serial.begin(115200);\r\n WiFi.onEvent(WiFiEvent);\r\n ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE);\r\n}\r\n\r\n\r\nvoid loop() {\r\n if (eth_connected) {\r\n testClient(\"google.com\", 80);\r\n }\r\n delay(10000);\r\n}<\/pre>\n - \u4f7f\u7528Arduino\u5f00\u53d1ESP32\uff0806\uff09\uff1aEthernet\u7684\u4f7f\u7528\uff08\u57fa\u4e8eLAN8720\uff09<\/a><\/li>\n<\/ul>\n
![\"\"](\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2021\/02\/1614258754-300x204.png\")
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