{"id":78173,"date":"2026-02-26T13:18:22","date_gmt":"2026-02-26T05:18:22","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78173.html"},"modified":"2026-02-26T13:18:22","modified_gmt":"2026-02-26T05:18:22","slug":"w5500%e4%bb%a5%e5%a4%aa%e7%bd%91%e6%8e%a7%e5%88%b6%e5%99%a8%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97%ef%bc%9a%e5%9f%ba%e4%ba%8eiolibrary%e5%ba%93%e6%9e%84%e5%bb%ba%e9%ab%98%e6%95%88tcp%e6%9c%8d%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78173.html","title":{"rendered":"W5500\u4ee5\u592a\u7f51\u63a7\u5236\u5668\u5b9e\u6218\u6307\u5357\uff1a\u57fa\u4e8eioLibrary\u5e93\u6784\u5efa\u9ad8\u6548TCP\u670d\u52a1\u5668"},"content":{"rendered":"<h3>1. \u4e3a\u4ec0\u4e48\u8bf4W5500\u662f\u5d4c\u5165\u5f0f\u7f51\u7edc\u5f00\u53d1\u7684\u201c\u61d2\u4eba\u795e\u5668\u201d&#xff1f;<\/h3>\n<p>\u5982\u679c\u4f60\u505a\u8fc7\u5d4c\u5165\u5f0f\u7f51\u7edc\u5f00\u53d1&#xff0c;\u80af\u5b9a\u5bf9\u8f6f\u4ef6\u534f\u8bae\u6808\u7684\u590d\u6742\u6027\u6df1\u6709\u4f53\u4f1a\u3002\u5149\u662fTCP\u7684\u4e09\u6b21\u63e1\u624b\u3001\u6d41\u91cf\u63a7\u5236\u3001\u91cd\u4f20\u673a\u5236&#xff0c;\u5c31\u8db3\u4ee5\u8ba9\u4e00\u4e2a\u7b80\u5355\u7684\u5e94\u7528\u4ee3\u7801\u91cf\u7ffb\u500d&#xff0c;\u66f4\u522b\u63d0\u8fd8\u8981\u5904\u7406ARP\u3001ICMP\u8fd9\u4e9b\u5e95\u5c42\u534f\u8bae\u3002\u6211\u5f53\u5e74\u7528\u8f6f\u4ef6\u534f\u8bae\u6808\u505a\u9879\u76ee&#xff0c;\u8c03\u8bd5\u7f51\u7edc\u95ee\u9898\u7684\u65f6\u95f4\u6bd4\u5199\u4e1a\u52a1\u903b\u8f91\u8fd8\u957f&#xff0c;\u7ecf\u5e38\u662f\u6570\u636e\u53d1\u51fa\u53bb\u5c31\u77f3\u6c89\u5927\u6d77&#xff0c;\u67e5\u534a\u5929\u624d\u53d1\u73b0\u662f\u67d0\u4e2a\u72b6\u6001\u673a\u6ca1\u5904\u7406\u597d\u3002<\/p>\n<p>\u540e\u6765\u63a5\u89e6\u5230W5500&#xff0c;\u6211\u7684\u7b2c\u4e00\u611f\u89c9\u662f&#xff1a;\u8fd9\u4e1c\u897f\u7b80\u76f4\u662f\u7ed9\u5d4c\u5165\u5f0f\u5de5\u7a0b\u5e08\u201c\u51cf\u8d1f\u201d\u7684\u3002\u5b83\u6700\u5927\u7684\u7279\u70b9&#xff0c;\u5c31\u662f\u628a\u6574\u4e2aTCP\/IP\u534f\u8bae\u6808&#xff0c;\u4ece\u7269\u7406\u5c42\u5230\u4f20\u8f93\u5c42&#xff0c;\u5168\u90e8\u7528\u786c\u4ef6\u903b\u8f91\u95e8\u7535\u8def\u5b9e\u73b0\u4e86\u3002\u8fd9\u610f\u5473\u7740\u4ec0\u4e48&#xff1f;\u610f\u5473\u7740\u4f60\u7684\u4e3b\u63a7MCU&#xff08;\u6bd4\u5982STM32&#xff09;\u518d\u4e5f\u4e0d\u7528\u53bb\u64cd\u5fc3\u6570\u636e\u5305\u7684\u5206\u7247\u3001\u91cd\u7ec4\u3001\u6821\u9a8c\u548c\u8ba1\u7b97\u8fd9\u4e9b\u810f\u6d3b\u7d2f\u6d3b\u4e86\u3002\u4f60\u53ef\u4ee5\u628aW5500\u7b80\u5355\u5730\u60f3\u8c61\u6210MCU\u7684\u4e00\u4e2a\u201c\u667a\u80fd\u5916\u8bbeRAM\u201d&#xff0c;\u4f60\u53ea\u7ba1\u5f80\u91cc\u6254\u5e94\u7528\u5c42\u6570\u636e&#xff0c;\u544a\u8bc9\u5b83\u201c\u53d1\u7ed9\u8c01\u201d&#xff0c;\u6216\u8005\u4ece\u91cc\u9762\u8bfb\u201c\u8c01\u53d1\u6765\u7684\u6570\u636e\u201d&#xff0c;\u5269\u4e0b\u7684\u7f51\u7edc\u901a\u4fe1\u7ec6\u8282&#xff0c;W5500\u5168\u5305\u4e86\u3002<\/p>\n<p>\u8fd9\u79cd\u201c\u5168\u786c\u4ef6\u534f\u8bae\u6808\u201d\u7684\u65b9\u6848&#xff0c;\u5e26\u6765\u7684\u597d\u5904\u662f\u5b9e\u5b9e\u5728\u5728\u7684\u3002\u6700\u76f4\u89c2\u7684\u5c31\u662f\u6027\u80fd\u7a33\u5b9a\u548c\u8d44\u6e90\u8282\u7701\u3002\u56e0\u4e3a\u534f\u8bae\u5904\u7406\u662f\u786c\u4ef6\u5e76\u884c\u6267\u884c\u7684&#xff0c;\u6240\u4ee5\u901a\u4fe1\u6548\u7387\u975e\u5e38\u9ad8&#xff0c;8\u4e2aSocket\u53ef\u4ee5\u72ec\u7acb\u3001\u540c\u65f6\u5de5\u4f5c&#xff0c;\u4e92\u4e0d\u5e72\u6270\u3002\u5b9e\u6d4b\u4e0b\u6765&#xff0c;\u5728100Mbps\u7f51\u7edc\u4e0b\u8fdb\u884cTCP\u901a\u4fe1&#xff0c;\u6570\u636e\u541e\u5410\u975e\u5e38\u5e73\u7a33&#xff0c;\u5ef6\u8fdf\u6781\u4f4e\u3002\u5bf9\u4e8e\u8d44\u6e90\u53d7\u9650\u7684MCU\u6765\u8bf4&#xff0c;\u5b83\u89e3\u653e\u4e86\u5b9d\u8d35\u7684CPU\u7b97\u529b\u548c\u5185\u5b58\u3002\u4ee5\u524d\u8dd1\u8f6f\u4ef6\u534f\u8bae\u6808\u53ef\u80fd\u8981\u7528\u6389\u51e0\u5341KB\u7684RAM\u548c\u5927\u91cf\u7684CPU\u4e2d\u65ad&#xff0c;\u73b0\u5728\u53ea\u9700\u8981\u901a\u8fc7SPI\u63a5\u53e3\u8bfb\u5199\u51e0\u4e2a\u5bc4\u5b58\u5668&#xff0c;\u7701\u4e0b\u7684\u8d44\u6e90\u53ef\u4ee5\u7528\u6765\u5904\u7406\u66f4\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91&#xff0c;\u6216\u8005\u76f4\u63a5\u9009\u7528\u4e00\u6b3e\u66f4\u4fbf\u5b9c\u3001\u8d44\u6e90\u66f4\u5c11\u7684MCU&#xff0c;\u4ece\u800c\u964d\u4f4e\u6574\u4f53BOM\u6210\u672c\u3002<\/p>\n<p>\u5b98\u65b9\u63d0\u4f9b\u7684 ioLibrary\u5e93&#xff0c;\u5219\u662f\u8ba9\u8fd9\u628a\u201c\u795e\u5668\u201d\u53d8\u5f97\u4e0a\u624b\u6781\u5176\u5bb9\u6613\u7684\u5173\u952e\u3002\u5b83\u5df2\u7ecf\u5e2e\u4f60\u5c01\u88c5\u597d\u4e86\u5bf9W5500\u82af\u7247\u7684\u6240\u6709\u5e95\u5c42\u64cd\u4f5c&#xff0c;\u63d0\u4f9b\u4e86\u6e05\u6670\u6613\u61c2\u7684Socket API&#xff08;\u6bd4\u5982socket(), listen(), send(), recv()&#xff09;&#xff0c;\u5176\u98ce\u683c\u548cBSD Socket\u7f16\u7a0b\u63a5\u53e3\u975e\u5e38\u76f8\u4f3c\u3002\u5373\u4f7f\u4f60\u4e4b\u524d\u6ca1\u6709\u63a5\u89e6\u8fc7\u5d4c\u5165\u5f0f\u7f51\u7edc&#xff0c;\u53ea\u8981\u4f60\u4f1a\u7528C\u8bed\u8a00\u8c03\u7528\u51fd\u6570&#xff0c;\u5c31\u80fd\u5feb\u901f\u6784\u5efa\u51fa\u7f51\u7edc\u5e94\u7528\u3002\u6211\u4eec\u63a5\u4e0b\u6765\u7684\u5b9e\u6218&#xff0c;\u5c31\u662f\u56f4\u7ed5\u8fd9\u4e2a\u5e93\u5c55\u5f00&#xff0c;\u624b\u628a\u624b\u5e26\u4f60\u6784\u5efa\u4e00\u4e2a\u9ad8\u6548\u3001\u7a33\u5b9a\u7684TCP\u670d\u52a1\u5668\u3002<\/p>\n<h3>2. \u52a8\u624b\u524d\u7684\u51c6\u5907&#xff1a;\u786c\u4ef6\u8fde\u63a5\u4e0e\u5de5\u7a0b\u642d\u5efa<\/h3>\n<p>\u7406\u8bba\u8bf4\u5f97\u518d\u597d&#xff0c;\u4e0d\u5982\u52a8\u624b\u63a5\u4e0a\u7ebf\u3002\u6211\u4eec\u5148\u6765\u770b\u770b\u786c\u4ef6\u4e0a\u600e\u4e48\u628aW5500\u548c\u4f60\u7684MCU&#xff08;\u8fd9\u91cc\u4ee5STM32F103\u4e3a\u4f8b&#xff0c;\u5176\u4ed6\u578b\u53f7\u539f\u7406\u76f8\u901a&#xff09;\u8fde\u63a5\u8d77\u6765\u3002<\/p>\n<p>W5500\u4e0e\u4e3b\u673a\u7684\u901a\u4fe1\u63a5\u53e3\u662f\u6807\u51c6\u76844\u7ebfSPI&#xff0c;\u8fd9\u662f\u6574\u4e2a\u7cfb\u7edf\u7684\u201c\u6570\u636e\u9ad8\u901f\u516c\u8def\u201d\u3002\u8fde\u63a5\u975e\u5e38\u7b80\u5355&#xff1a;<\/p>\n<ul>\n<li>SCLK (Serial Clock): SPI\u65f6\u949f\u7ebf&#xff0c;\u63a5MCU\u7684SPI\u65f6\u949f\u5f15\u811a\u3002<\/li>\n<li>MOSI (Master Out Slave In): \u4e3b\u673a\u8f93\u51fa\u4ece\u673a\u8f93\u5165&#xff0c;\u63a5MCU\u7684SPI\u6570\u636e\u8f93\u51fa\u5f15\u811a\u3002<\/li>\n<li>MISO (Master In Slave Out): \u4e3b\u673a\u8f93\u5165\u4ece\u673a\u8f93\u51fa&#xff0c;\u63a5MCU\u7684SPI\u6570\u636e\u8f93\u5165\u5f15\u811a\u3002<\/li>\n<li>SCSn (Slave Chip Select): \u7247\u9009\u4fe1\u53f7&#xff0c;\u4f4e\u7535\u5e73\u6709\u6548&#xff0c;\u63a5MCU\u7684\u4e00\u4e2a\u666e\u901aGPIO\u3002\u8fd9\u662f\u7528\u6765\u9009\u4e2dW5500\u82af\u7247\u7684&#xff0c;\u975e\u5e38\u91cd\u8981\u3002<\/li>\n<\/ul>\n<p>\u6b64\u5916&#xff0c;\u522b\u5fd8\u4e86\u8fde\u63a5\u7535\u6e90&#xff08;3.3V&#xff09;\u548c\u5730\u7ebf\u3002W5500\u672c\u8eab\u96c6\u6210\u4e86PHY&#xff0c;\u6240\u4ee5\u76f4\u63a5\u7528\u4e00\u4e2a\u5e26\u7f51\u7edc\u53d8\u538b\u5668\u7684RJ45\u63d2\u5ea7&#xff08;\u6216\u8005\u73b0\u6210\u7684W5500\u6a21\u5757&#xff09;\u8fde\u63a5\u7f51\u7ebf\u5373\u53ef&#xff0c;\u65e0\u9700\u5916\u90e8PHY\u82af\u7247&#xff0c;\u8fd9\u53c8\u7701\u4e86\u4e0d\u5c11\u4e8b\u3002<\/p>\n<p>\u786c\u4ef6\u8fde\u597d\u540e&#xff0c;\u6211\u4eec\u5f00\u59cb\u5728\u8f6f\u4ef6\u5de5\u7a0b\u91cc\u201c\u642d\u67b6\u5b50\u201d\u3002\u9996\u5148\u8981\u53bbWIZnet\u5b98\u7f51\u6216GitHub\u4e0b\u8f7d\u6700\u65b0\u7684 ioLibrary Driver\u3002\u89e3\u538b\u540e&#xff0c;\u4f60\u4f1a\u53d1\u73b0\u91cc\u9762\u6709\u51e0\u4e2a\u5173\u952e\u7684\u6587\u4ef6\u5939\u3002\u5bf9\u4e8e\u5b9e\u73b0\u57fa\u7840\u7684TCP\u670d\u52a1\u5668&#xff0c;\u6211\u4eec\u4e3b\u8981\u5173\u5fc3 Ethernet \u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u3002\u4f60\u9700\u8981\u5c06\u4ee5\u4e0b\u6838\u5fc3\u6587\u4ef6\u6dfb\u52a0\u5230\u4f60\u7684MDK\u6216IAR\u5de5\u7a0b\u4e2d&#xff1a;<\/p>\n<ul>\n<li>wizchip_conf.c\/.h: \u82af\u7247\u914d\u7f6e\u548c\u51fd\u6570\u6ce8\u518c\u7684\u6838\u5fc3\u6587\u4ef6\u3002<\/li>\n<li>w5500.c\/.h: W5500\u82af\u7247\u7684\u4e13\u7528\u9a71\u52a8\u3002<\/li>\n<li>socket.c\/.h: \u63d0\u4f9b\u6211\u4eec\u5373\u5c06\u7528\u5230\u7684Socket API\u3002<\/li>\n<\/ul>\n<p>\u628a\u8fd9\u4e9b\u6587\u4ef6\u7684\u8def\u5f84\u5728\u5de5\u7a0b\u91cc\u8bbe\u7f6e\u597d\u3002\u8fd9\u91cc\u6709\u4e2a\u5c0f\u6280\u5de7&#xff0c;\u4e3a\u4e86\u4fdd\u6301\u5de5\u7a0b\u6574\u6d01&#xff0c;\u6211\u4e60\u60ef\u5728\u9879\u76ee\u91cc\u65b0\u5efa\u4e00\u4e2a ioLibrary \u7684\u7ec4&#xff0c;\u628a\u8fd9\u4e9b\u6587\u4ef6\u90fd\u653e\u8fdb\u53bb&#xff0c;\u8fd9\u6837\u7ba1\u7406\u548c\u79fb\u690d\u90fd\u4f1a\u65b9\u4fbf\u5f88\u591a\u3002<\/p>\n<h3>3. \u6253\u901a\u4efb\u7763\u4e8c\u8109&#xff1a;SPI\u5e95\u5c42\u9a71\u52a8\u9002\u914d<\/h3>\n<p>ioLibrary\u5e93\u662f\u4e00\u4e2a\u786c\u4ef6\u62bd\u8c61\u5c42&#xff0c;\u5b83\u5e76\u4e0d\u77e5\u9053\u4f60\u7684MCU\u5177\u4f53\u5982\u4f55\u64cd\u4f5cSPI\u3002\u56e0\u6b64&#xff0c;\u6211\u4eec\u9700\u8981\u5b9e\u73b0\u51e0\u4e2a\u7b80\u5355\u7684\u56de\u8c03\u51fd\u6570\u6765\u201c\u544a\u8bc9\u201d\u5b83\u3002\u8fd9\u662f\u79fb\u690d\u8fc7\u7a0b\u4e2d\u6700\u5173\u952e\u7684\u4e00\u6b65&#xff0c;\u76f8\u5f53\u4e8e\u4e3a\u5e93\u548c\u4f60\u7684\u786c\u4ef6\u4e4b\u95f4\u642d\u8d77\u4e00\u5ea7\u6865\u3002<\/p>\n<p>\u5e93\u9700\u8981\u6211\u4eec\u63d0\u4f9b\u4e94\u4e2a\u51fd\u6570&#xff1a;<\/p>\n<li>SPI\u5355\u5b57\u8282\u8bfb\u5199\u51fd\u6570&#xff1a;spi_readbyte() \u548c spi_writebyte()\u3002<\/li>\n<li>\u7247\u9009\u63a7\u5236\u51fd\u6570&#xff1a;spi_cs_select() \u548c spi_cs_deselect()\u3002<\/li>\n<li>\u4e34\u754c\u533a\u4fdd\u62a4\u51fd\u6570&#xff1a;spi_cris_enter() \u548c spi_cris_exit()\u3002<\/li>\n<p>\u4e0b\u9762\u6211\u7528STM32\u6807\u51c6\u5e93\u7684\u5199\u6cd5\u4e3e\u4e2a\u4f8b\u5b50&#xff0c;\u4f60\u7528HAL\u5e93\u6216\u5176\u5b83\u5e73\u53f0&#xff0c;\u601d\u8def\u5b8c\u5168\u4e00\u6837&#xff1a;<\/p>\n<p>\/\/ \u5047\u8bbeSPI2, CS\u5f15\u811a\u4e3aPB12<br \/>\nvoid SPI_CS_Select(void) {<br \/>\n    GPIO_ResetBits(GPIOB, GPIO_Pin_12); \/\/ CS\u62c9\u4f4e&#xff0c;\u9009\u4e2dW5500<br \/>\n}<\/p>\n<p>void SPI_CS_Deselect(void) {<br \/>\n    GPIO_SetBits(GPIOB, GPIO_Pin_12); \/\/ CS\u62c9\u9ad8&#xff0c;\u53d6\u6d88\u9009\u4e2d<br \/>\n}<\/p>\n<p>uint8_t SPI_ReadByte(void) {<br \/>\n    uint8_t dummy &#061; 0xff;<br \/>\n    uint8_t ret;<br \/>\n    \/\/ \u7b49\u5f85\u53d1\u9001\u7f13\u51b2\u533a\u7a7a<br \/>\n    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) &#061;&#061; RESET);<br \/>\n    SPI_I2S_SendData(SPI2, dummy); \/\/ \u53d1\u9001\u54d1\u5143\u6570\u636e\u4ee5\u4ea7\u751f\u65f6\u949f<br \/>\n    \/\/ \u7b49\u5f85\u63a5\u6536\u5b8c\u6210<br \/>\n    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) &#061;&#061; RESET);<br \/>\n    ret &#061; SPI_I2S_ReceiveData(SPI2);<br \/>\n    return ret;<br \/>\n}<\/p>\n<p>void SPI_WriteByte(uint8_t wb) {<br \/>\n    \/\/ \u7b49\u5f85\u53d1\u9001\u7f13\u51b2\u533a\u7a7a<br \/>\n    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) &#061;&#061; RESET);<br \/>\n    SPI_I2S_SendData(SPI2, wb);<br \/>\n    \/\/ \u53ef\u9009&#xff1a;\u7b49\u5f85\u53d1\u9001\u5b8c\u6210&#xff0c;\u5982\u679c\u662f\u5168\u53cc\u5de5&#xff0c;\u901a\u5e38\u4e5f\u8bfb\u4e00\u4e0b\u4ee5\u6e05\u9664RXNE\u6807\u5fd7<br \/>\n    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) &#061;&#061; RESET);<br \/>\n    SPI_I2S_ReceiveData(SPI2);<br \/>\n}<\/p>\n<p>\/\/ \u4e34\u754c\u533a\u4fdd\u62a4&#xff1a;\u64cd\u4f5cSPI\u65f6\u7981\u6b62\u4e2d\u65ad&#xff0c;\u9632\u6b62\u6570\u636e\u8bbf\u95ee\u51b2\u7a81<br \/>\nvoid SPI_CrisEnter(void) {<br \/>\n    __disable_irq(); \/\/ \u5173\u5168\u5c40\u4e2d\u65ad<br \/>\n}<\/p>\n<p>void SPI_CrisExit(void) {<br \/>\n    __enable_irq(); \/\/ \u5f00\u5168\u5c40\u4e2d\u65ad<br \/>\n}<\/p>\n<p>\u5199\u597d\u8fd9\u4e94\u4e2a\u51fd\u6570\u540e&#xff0c;\u5728\u4e3b\u7a0b\u5e8f\u521d\u59cb\u5316\u9636\u6bb5&#xff0c;\u901a\u8fc7 reg_wizchip_spi_cbfunc\u3001reg_wizchip_cs_cbfunc \u548c reg_wizchip_cris_cbfunc \u8fd9\u4e09\u4e2a\u51fd\u6570\u5c06\u5b83\u4eec\u6ce8\u518c\u7ed9ioLibrary\u5e93\u3002\u8fd9\u4e00\u6b65\u505a\u5b8c&#xff0c;\u5e93\u5c31\u80fd\u6b63\u786e\u9a71\u52a8\u4f60\u7684\u786c\u4ef6SPI\u4e0eW5500\u901a\u4fe1\u4e86\u3002\u6211\u5efa\u8bae\u5728\u8c03\u8bd5\u65f6&#xff0c;\u53ef\u4ee5\u5148\u5199\u4e00\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5&#xff0c;\u7528\u8fd9\u4e9b\u51fd\u6570\u8bfb\u5199W5500\u7684\u7248\u672c\u53f7\u5bc4\u5b58\u5668&#xff08;0x0000\u5730\u5740&#xff09;&#xff0c;\u786e\u4fddSPI\u901a\u4fe1\u94fe\u8def\u662f\u901a\u7684&#xff0c;\u8fd9\u80fd\u907f\u514d\u540e\u7eed\u5f88\u591a\u83ab\u540d\u5176\u5999\u7684\u95ee\u9898\u3002<\/p>\n<h3>4. \u6838\u5fc3\u5b9e\u6218&#xff1a;\u4e09\u6b65\u6784\u5efaTCP\u56de\u73af\u670d\u52a1\u5668<\/h3>\n<p>\u57fa\u7840\u6253\u7262\u4e86&#xff0c;\u73b0\u5728\u5f00\u59cb\u6784\u5efa\u6211\u4eec\u7684TCP\u670d\u52a1\u5668\u3002\u6211\u4eec\u4f1a\u5b9e\u73b0\u4e00\u4e2a\u7ecf\u5178\u7684\u201c\u56de\u73af\u201d\u670d\u52a1\u5668&#xff1a;\u5ba2\u6237\u7aef\u53d1\u6765\u4ec0\u4e48\u6570\u636e&#xff0c;\u670d\u52a1\u5668\u5c31\u539f\u6837\u53d1\u56de\u53bb\u3002\u8fd9\u867d\u7136\u7b80\u5355&#xff0c;\u4f46\u6db5\u76d6\u4e86TCP\u670d\u52a1\u5668\u4ece\u521d\u59cb\u5316\u3001\u76d1\u542c\u3001\u63a5\u6536\u5230\u54cd\u5e94\u7684\u5b8c\u6574\u6d41\u7a0b\u3002<\/p>\n<p>\u7b2c\u4e00\u6b65&#xff1a;\u7f51\u7edc\u53c2\u6570\u4e0e\u82af\u7247\u521d\u59cb\u5316<br \/>\n\u5728main\u51fd\u6570\u91cc&#xff0c;\u6211\u4eec\u9996\u5148\u8981\u5b9a\u4e49\u7f51\u7edc\u914d\u7f6e\u4fe1\u606f&#xff0c;\u7136\u540e\u521d\u59cb\u5316W5500\u82af\u7247\u3002<\/p>\n<p>wiz_NetInfo net_info &#061; {<br \/>\n    .mac &#061; {0x00, 0x08, 0xDC, 0x00, 0xAB, 0xCD}, \/\/ \u8bbe\u7f6e\u4e00\u4e2aMAC\u5730\u5740<br \/>\n    .ip &#061; {192, 168, 1, 200},  \/\/ \u670d\u52a1\u5668\u9759\u6001IP<br \/>\n    .sn &#061; {255, 255, 255, 0},  \/\/ \u5b50\u7f51\u63a9\u7801<br \/>\n    .gw &#061; {192, 168, 1, 1},    \/\/ \u7f51\u5173<br \/>\n    .dns &#061; {8, 8, 8, 8},       \/\/ DNS\u670d\u52a1\u5668&#xff08;\u672c\u4f8b\u672a\u4f7f\u7528&#xff09;<br \/>\n    .dhcp &#061; NETINFO_STATIC      \/\/ \u4f7f\u7528\u9759\u6001IP<br \/>\n};<\/p>\n<p>int main(void) {<br \/>\n    \/\/ &#8230; \u7cfb\u7edf\u65f6\u949f\u3001\u4e32\u53e3\u3001SPI\u786c\u4ef6\u521d\u59cb\u5316 &#8230;<\/p>\n<p>    \/\/ 1. \u6ce8\u518c\u6211\u4eec\u521a\u624d\u5199\u7684SPI\u56de\u8c03\u51fd\u6570<br \/>\n    reg_wizchip_spi_cbfunc(SPI_ReadByte, SPI_WriteByte);<br \/>\n    reg_wizchip_cs_cbfunc(SPI_CS_Select, SPI_CS_Deselect);<br \/>\n    reg_wizchip_cris_cbfunc(SPI_CrisEnter, SPI_CrisExit);<\/p>\n<p>    \/\/ 2. \u521d\u59cb\u5316W5500\u82af\u7247\u5185\u90e8\u8bbe\u7f6e<br \/>\n    uint8_t memsize[2] &#061; {2, 2}; \/\/ \u4e3a\u6bcf\u4e2aSocket\u5206\u914d2KB\u6536\u53d1\u7f13\u5b58<br \/>\n    if(ctlwizchip(CW_INIT_WIZCHIP, memsize) &#061;&#061; -1) {<br \/>\n        printf(&#034;W5500 Init Failed!\\\\r\\\\n&#034;);<br \/>\n        while(1);<br \/>\n    }<\/p>\n<p>    \/\/ 3. \u914d\u7f6e\u7f51\u7edc\u53c2\u6570&#xff08;IP, MAC\u7b49&#xff09;<br \/>\n    ctlnetwork(CN_SET_NETINFO, (void*)&amp;net_info);<\/p>\n<p>    printf(&#034;TCP Server Started at %d.%d.%d.%d:5000\\\\r\\\\n&#034;,<br \/>\n           net_info.ip[0], net_info.ip[1], net_info.ip[2], net_info.ip[3]);<\/p>\n<p>    \/\/ &#8230; \u8fdb\u5165\u4e3b\u5faa\u73af &#8230;<br \/>\n}<\/p>\n<p>\u7b2c\u4e8c\u6b65&#xff1a;\u5b9e\u73b0\u670d\u52a1\u5668\u72b6\u6001\u673a\u903b\u8f91<br \/>\nTCP\u8fde\u63a5\u662f\u6709\u72b6\u6001\u7684&#xff0c;ioLibrary\u5e93\u901a\u8fc7 getSn_SR(socket_number) \u51fd\u6570\u6765\u83b7\u53d6\u67d0\u4e2aSocket\u7684\u5f53\u524d\u72b6\u6001\u3002\u6211\u4eec\u9700\u8981\u5728\u4e00\u4e2a\u5faa\u73af\u91cc\u6839\u636e\u4e0d\u540c\u7684\u72b6\u6001\u6267\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002\u8fd9\u662f\u670d\u52a1\u5668\u903b\u8f91\u7684\u6838\u5fc3&#xff1a;<\/p>\n<p>#define SOCKET_ID 0 \/\/ \u4f7f\u7528Socket 0<br \/>\n#define PORT 5000   \/\/ \u76d1\u542c5000\u7aef\u53e3<br \/>\nuint8_t buffer[2048];<\/p>\n<p>void tcp_server_loop(void) {<br \/>\n    int32_t ret;<br \/>\n    uint16_t len, sent_len;<\/p>\n<p>    switch(getSn_SR(SOCKET_ID)) {<br \/>\n        case SOCK_CLOSED: \/\/ \u72b6\u6001&#xff1a;Socket\u5173\u95ed<br \/>\n            \/\/ \u521b\u5efaTCP\u7c7b\u578b\u7684Socket&#xff0c;\u5e76\u7ed1\u5b9a\u7aef\u53e3<br \/>\n            if((ret &#061; socket(SOCKET_ID, Sn_MR_TCP, PORT, 0)) !&#061; SOCKET_ID) {<br \/>\n                printf(&#034;Socket Open Error: %ld\\\\r\\\\n&#034;, ret);<br \/>\n                break;<br \/>\n            }<br \/>\n            printf(&#034;Socket Opened. Listening&#8230;\\\\r\\\\n&#034;);<br \/>\n            break;<\/p>\n<p>        case SOCK_INIT: \/\/ \u72b6\u6001&#xff1a;Socket\u5df2\u521b\u5efa&#xff0c;\u8fdb\u5165\u76d1\u542c<br \/>\n            if((ret &#061; listen(SOCKET_ID)) !&#061; SOCK_OK) {<br \/>\n                printf(&#034;Listen Error: %ld\\\\r\\\\n&#034;, ret);<br \/>\n                break;<br \/>\n            }<br \/>\n            printf(&#034;Now Listening on port %d\\\\r\\\\n&#034;, PORT);<br \/>\n            break;<\/p>\n<p>        case SOCK_ESTABLISHED: \/\/ \u72b6\u6001&#xff1a;\u8fde\u63a5\u5df2\u5efa\u7acb<br \/>\n            \/\/ \u68c0\u67e5\u662f\u5426\u6709\u8fde\u63a5\u5efa\u7acb\u4e2d\u65ad<br \/>\n            if(getSn_IR(SOCKET_ID) &amp; Sn_IR_CON) {<br \/>\n                setSn_IR(SOCKET_ID, Sn_IR_CON); \/\/ \u6e05\u9664\u4e2d\u65ad\u6807\u5fd7<br \/>\n                printf(&#034;Client Connected!\\\\r\\\\n&#034;);<br \/>\n            }<\/p>\n<p>            \/\/ \u68c0\u67e5\u63a5\u6536\u7f13\u51b2\u533a\u662f\u5426\u6709\u6570\u636e<br \/>\n            len &#061; getSn_RX_RSR(SOCKET_ID);<br \/>\n            if(len &gt; 0) {<br \/>\n                \/\/ \u786e\u4fdd\u8bfb\u53d6\u957f\u5ea6\u4e0d\u8d85\u8fc7\u7f13\u51b2\u533a\u5927\u5c0f<br \/>\n                len &#061; (len &gt; sizeof(buffer)) ? sizeof(buffer) : len;<\/p>\n<p>                \/\/ \u8bfb\u53d6\u6570\u636e<br \/>\n                ret &#061; recv(SOCKET_ID, buffer, len);<br \/>\n                if(ret &lt;&#061; 0) {<br \/>\n                    close(SOCKET_ID);<br \/>\n                    break;<br \/>\n                }<\/p>\n<p>                \/\/ \u6253\u5370\u63a5\u6536\u5230\u7684\u6570\u636e&#xff08;\u901a\u8fc7\u4e32\u53e3&#xff09;<br \/>\n                printf(&#034;Received %ld bytes: &#034;, ret);<br \/>\n                for(int i&#061;0; i&lt;ret; i&#043;&#043;) putchar(buffer[i]);<br \/>\n                printf(&#034;\\\\r\\\\n&#034;);<\/p>\n<p>                \/\/ \u56de\u73af\u53d1\u9001&#xff1a;\u5c06\u6536\u5230\u7684\u6570\u636e\u539f\u6837\u53d1\u56de<br \/>\n                sent_len &#061; 0;<br \/>\n                while(sent_len &lt; ret) {<br \/>\n                    int32_t send_ret &#061; send(SOCKET_ID, buffer &#043; sent_len, ret &#8211; sent_len);<br \/>\n                    if(send_ret &lt; 0) {<br \/>\n                        printf(&#034;Send Error\\\\r\\\\n&#034;);<br \/>\n                        close(SOCKET_ID);<br \/>\n                        return;<br \/>\n                    }<br \/>\n                    sent_len &#043;&#061; send_ret;<br \/>\n                }<br \/>\n                printf(&#034;Echoed back.\\\\r\\\\n&#034;);<br \/>\n            }<br \/>\n            break;<\/p>\n<p>        case SOCK_CLOSE_WAIT: \/\/ \u72b6\u6001&#xff1a;\u5ba2\u6237\u7aef\u4e3b\u52a8\u5173\u95ed&#xff0c;\u7b49\u5f85\u670d\u52a1\u5668\u786e\u8ba4<br \/>\n            printf(&#034;Client Closed. Closing socket&#8230;\\\\r\\\\n&#034;);<br \/>\n            disconnect(SOCKET_ID);<br \/>\n            break;<\/p>\n<p>        default:<br \/>\n            break;<br \/>\n    }<br \/>\n}<\/p>\n<p>\u7b2c\u4e09\u6b65&#xff1a;\u4e3b\u5faa\u73af\u8c03\u7528<br \/>\n\u6700\u540e&#xff0c;\u5728\u4e3b\u7a0b\u5e8f\u7684 while(1) \u5faa\u73af\u4e2d\u4e0d\u65ad\u8c03\u7528\u8fd9\u4e2a\u72b6\u6001\u673a\u51fd\u6570\u5373\u53ef\u3002<\/p>\n<p>while(1) {<br \/>\n    tcp_server_loop();<br \/>\n    \/\/ \u8fd9\u91cc\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e9b\u5ef6\u65f6&#xff0c;\u6216\u8005\u5904\u7406\u5176\u4ed6\u4efb\u52a1<br \/>\n    \/\/ delay_ms(1);<br \/>\n}<\/p>\n<h3>5. \u8c03\u8bd5\u4e0e\u9a8c\u8bc1&#xff1a;\u8ba9\u670d\u52a1\u5668\u8dd1\u8d77\u6765<\/h3>\n<p>\u4ee3\u7801\u5199\u5b8c\u4e86&#xff0c;\u600e\u4e48\u9a8c\u8bc1\u5b83\u771f\u7684\u5728\u5de5\u4f5c\u5462&#xff1f;\u6211\u4e60\u60ef\u7528\u4ee5\u4e0b\u6b65\u9aa4&#xff0c;\u5b9e\u6d4b\u4e0b\u6765\u975e\u5e38\u9ad8\u6548&#xff1a;<\/p>\n<li>\u786c\u4ef6\u8fde\u63a5&#xff1a;\u7528\u7f51\u7ebf\u5c06\u4f60\u7684\u5f00\u53d1\u677f&#xff08;W5500&#xff09;\u548c\u7535\u8111\u76f4\u63a5\u76f8\u8fde&#xff0c;\u6216\u8005\u8fde\u63a5\u5230\u540c\u4e00\u4e2a\u5c40\u57df\u7f51\u4ea4\u6362\u673a\/\u8def\u7531\u5668\u4e0b\u3002<\/li>\n<li>IP\u8bbe\u7f6e&#xff1a;\u56e0\u4e3a\u6211\u4eec\u7684\u7a0b\u5e8f\u8bbe\u7f6e\u4e86\u9759\u6001IP 192.168.1.200&#xff0c;\u6240\u4ee5\u9700\u8981\u5c06\u7535\u8111\u7684\u4ee5\u592a\u7f51\u7f51\u5361\u4e5f\u8bbe\u7f6e\u4e3a\u540c\u4e00\u7f51\u6bb5\u7684\u9759\u6001IP&#xff0c;\u6bd4\u5982 192.168.1.199&#xff0c;\u5b50\u7f51\u63a9\u7801 255.255.255.0\u3002<\/li>\n<li>\u9009\u62e9\u8c03\u8bd5\u5de5\u5177&#xff1a;\u5728\u7535\u8111\u4e0a\u6253\u5f00\u4e00\u4e2a\u7f51\u7edc\u8c03\u8bd5\u52a9\u624b&#xff08;\u5982TCP&amp;UDP\u8c03\u8bd5\u52a9\u624b\u3001Hercules\u7b49&#xff09;\u3002\u914d\u7f6e\u4e3aTCP\u5ba2\u6237\u7aef\u6a21\u5f0f&#xff0c;\u8fdc\u7a0b\u4e3b\u673a\u5730\u5740\u586b 192.168.1.200&#xff0c;\u7aef\u53e3\u586b 5000&#xff0c;\u7136\u540e\u70b9\u51fb\u8fde\u63a5\u3002<\/li>\n<li>\u89c2\u5bdf\u4e0e\u6d4b\u8bd5&#xff1a;\n<ul>\n<li>\u8fde\u63a5\u6210\u529f\u540e&#xff0c;\u4f60\u7684\u4e32\u53e3\u8c03\u8bd5\u52a9\u624b\u5e94\u8be5\u4f1a\u6253\u5370\u51fa \u201cClient Connected!\u201d\u3002<\/li>\n<li>\u5728\u7535\u8111\u7684\u8c03\u8bd5\u52a9\u624b\u53d1\u9001\u6570\u636e\u6846\u91cc\u8f93\u5165 \u201cHello W5500\u201d&#xff0c;\u70b9\u51fb\u53d1\u9001\u3002<\/li>\n<li>\u6b64\u65f6&#xff0c;\u4e32\u53e3\u5e94\u8be5\u4f1a\u6253\u5370\u51fa \u201cReceived X bytes: Hello W5500\u201d \u548c \u201cEchoed back.\u201d\u3002<\/li>\n<li>\u540c\u65f6&#xff0c;\u7535\u8111\u7684\u7f51\u7edc\u8c03\u8bd5\u52a9\u624b\u7684\u63a5\u6536\u6846\u91cc&#xff0c;\u5e94\u8be5\u4f1a\u7acb\u523b\u770b\u5230 \u201cHello W5500\u201d \u88ab\u56de\u4f20\u56de\u6765\u3002<\/li>\n<\/ul>\n<\/li>\n<p>\u5982\u679c\u4e00\u5207\u987a\u5229&#xff0c;\u606d\u559c\u4f60&#xff0c;\u4e00\u4e2a\u57fa\u4e8eW5500\u786c\u4ef6\u534f\u8bae\u6808\u7684TCP\u670d\u52a1\u5668\u5df2\u7ecf\u6210\u529f\u8fd0\u884c\u4e86&#xff01;\u8fd9\u4e2a\u8fc7\u7a0b\u6bd4\u7eaf\u8f6f\u4ef6\u534f\u8bae\u6808\u8981\u7b80\u5355\u548c\u7a33\u5b9a\u5f97\u591a&#xff0c;\u6211\u7b2c\u4e00\u6b21\u8c03\u901a\u7684\u65f6\u5019&#xff0c;\u611f\u89c9\u6574\u4e2a\u7f51\u7edc\u901a\u4fe1\u53d8\u5f97\u5f02\u5e38\u6e05\u723d\u3002<\/p>\n<h3>6. \u8fdb\u9636\u4f18\u5316&#xff1a;\u4ece\u201c\u80fd\u7528\u201d\u5230\u201c\u597d\u7528\u201d\u3001\u201c\u7a33\u5b9a\u201d<\/h3>\n<p>\u5b9e\u73b0\u57fa\u7840\u529f\u80fd\u53ea\u662f\u7b2c\u4e00\u6b65\u3002\u5728\u771f\u5b9e\u7684\u5de5\u4e1a\u6216\u7269\u8054\u7f51\u9879\u76ee\u4e2d&#xff0c;\u6211\u4eec\u9700\u8981\u8003\u8651\u66f4\u591a\u3002\u4e0b\u9762\u5206\u4eab\u51e0\u4e2a\u6211\u8e29\u8fc7\u5751\u540e\u603b\u7ed3\u7684\u4f18\u5316\u70b9\u3002<\/p>\n<p>\u8fde\u63a5\u7ba1\u7406\u4e0e\u591a\u5ba2\u6237\u7aef\u5904\u7406&#xff1a;W5500\u67098\u4e2a\u72ec\u7acb\u7684\u786c\u4ef6Socket&#xff0c;\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5e76\u53d1\u670d\u52a1\u5668\u3002\u4e00\u79cd\u7b80\u5355\u7684\u67b6\u6784\u662f&#xff1a;\u6307\u5b9aSocket 0\u4e3a\u76d1\u542c\u4e13\u7528Socket&#xff0c;\u5f53\u6709\u65b0\u7684\u8fde\u63a5\u8bf7\u6c42\u5230\u6765\u65f6&#xff0c;\u6211\u4eec\u4ece\u7a7a\u95f2Socket\u6c60&#xff08;\u5982Socket 1-7&#xff09;\u4e2d\u5206\u914d\u4e00\u4e2a\u6765\u5904\u7406\u8fd9\u4e2a\u65b0\u8fde\u63a5\u3002\u8fd9\u6837&#xff0c;\u4e00\u4e2a\u670d\u52a1\u5668\u5c31\u80fd\u540c\u65f6\u670d\u52a1\u591a\u4e2a\u5ba2\u6237\u7aef\u3002\u5173\u952e\u5728\u4e8e\u7ba1\u7406\u597d\u6bcf\u4e2aSocket\u7684\u72b6\u6001\u673a&#xff0c;\u5e76\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u7ef4\u62a4\u72ec\u7acb\u7684\u4e0a\u4e0b\u6587&#xff08;\u5982\u6570\u636e\u7f13\u51b2\u533a&#xff09;\u3002<\/p>\n<p>\u6570\u636e\u6536\u53d1\u6027\u80fd\u8c03\u4f18&#xff1a;<\/p>\n<ul>\n<li>SPI\u65f6\u949f\u6700\u5927\u5316&#xff1a;\u786e\u4fdd\u4f60\u7684MCU SPI\u65f6\u949f\u914d\u7f6e\u5230\u6700\u9ad8&#xff08;\u6bd4\u5982STM32F103\u7684SPI2\u6700\u9ad836MHz&#xff0c;F4\u7cfb\u5217\u53ef\u4ee5\u523037.5MHz\u4ee5\u4e0a&#xff09;&#xff0c;\u5e76\u5339\u914dW5500\u652f\u6301\u7684SPI\u6a21\u5f0f0\u62163\u3002\u8fd9\u662f\u63d0\u5347\u541e\u5410\u91cf\u7684\u6700\u76f4\u63a5\u624b\u6bb5\u3002<\/li>\n<li>\u6279\u91cf\u6570\u636e\u4f20\u8f93&#xff1a;\u907f\u514d\u9891\u7e41\u53d1\u9001\u5355\u5b57\u8282\u6216\u5c0f\u6570\u636e\u5305\u3002ioLibrary\u7684 send() \u548c recv() \u51fd\u6570\u672c\u8eab\u652f\u6301\u4efb\u610f\u957f\u5ea6&#xff0c;\u4f46\u7f51\u7edc\u534f\u8bae\u6709\u6700\u5c0f\u5e27\u9650\u5236\u3002\u5c3d\u91cf\u5728\u5e94\u7528\u5c42\u505a\u805a\u5408&#xff0c;\u6bd4\u5982\u6536\u96c6\u5230\u4e00\u5b9a\u6570\u91cf\u7684\u6570\u636e\u6216\u8d85\u65f6\u540e\u518d\u4e00\u6b21\u6027\u53d1\u9001\u3002<\/li>\n<li>\u7f13\u5b58\u533a\u5927\u5c0f\u6743\u8861&#xff1a;\u521d\u59cb\u5316\u65f6 memsize \u53c2\u6570\u51b3\u5b9a\u4e86\u6bcf\u4e2aSocket\u6536\u53d1\u7f13\u5b58\u7684\u5927\u5c0f\u3002\u5728\u5185\u5b58\u5141\u8bb8\u7684\u60c5\u51b5\u4e0b&#xff08;\u603b\u517132KB&#xff09;&#xff0c;\u4e3a\u6570\u636e\u91cf\u5927\u7684Socket\u5206\u914d\u66f4\u5927\u7684\u7f13\u5b58\u53ef\u4ee5\u51cf\u5c11\u56e0\u7f13\u5b58\u6ee1\u5bfc\u81f4\u7684\u7b49\u5f85\u6216\u4e22\u5305\u3002\u4f8b\u5982&#xff0c;\u4e3b\u670d\u52a1Socket\u53ef\u4ee5\u5206\u914d4KB&#xff0c;\u5176\u4ed6\u5206\u914d2KB\u3002<\/li>\n<\/ul>\n<p>\u5de5\u4e1a\u573a\u666f\u4e0b\u7684\u7a33\u5b9a\u6027\u52a0\u56fa&#xff1a;<\/p>\n<ul>\n<li>\u94fe\u8def\u76d1\u6d4b\u4e0e\u91cd\u8fde&#xff1a;\u5728\u72b6\u6001\u673a\u4e2d\u589e\u52a0\u5bf9 SOCKET_TIMEOUT \u6216 SOCKET_UDP \u7b49\u5f02\u5e38\u72b6\u6001\u7684\u68c0\u6d4b\u3002\u4e00\u65e6\u53d1\u73b0\u8fde\u63a5\u5f02\u5e38\u65ad\u5f00&#xff0c;\u4e3b\u52a8\u8c03\u7528 close() \u7136\u540e\u91cd\u65b0\u8fdb\u5165 SOCK_CLOSED \u72b6\u6001\u5f00\u59cb\u76d1\u542c\u3002\u53ef\u4ee5\u589e\u52a0\u4e00\u4e2a\u201c\u91cd\u8fde\u8ba1\u6570\u201d\u548c\u201c\u5ef6\u65f6\u201d&#xff0c;\u907f\u514d\u5728\u6545\u969c\u65f6\u75af\u72c2\u91cd\u8bd5\u3002<\/li>\n<li>\u6297\u5e72\u6270\u4e0e\u786c\u4ef6\u4fdd\u62a4&#xff1a;\u5de5\u4e1a\u73af\u5883\u590d\u6742&#xff0c;\u786e\u4fdd\u7535\u6e90\u5e72\u51c0&#xff08;\u52a0\u78c1\u73e0\u3001\u6ee4\u6ce2\u7535\u5bb9&#xff09;&#xff0c;SPI\u8d70\u7ebf\u5c3d\u91cf\u77ed\u3002\u5982\u679c\u901a\u4fe1\u8ddd\u79bb\u8f83\u957f\u6216\u73af\u5883\u6076\u52a3&#xff0c;\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5e26\u5c4f\u853d\u7684\u7f51\u7ebf\u3002W5500\u7684I\/O\u53e3\u67095V\u8010\u538b&#xff0c;\u4f46\u4e0e3.3V MCU\u8fde\u63a5\u65f6&#xff0c;\u6700\u597d\u786e\u4fdd\u7535\u5e73\u5339\u914d\u3002<\/li>\n<li>\u770b\u95e8\u72d7\u96c6\u6210&#xff1a;\u5c06\u7f51\u7edc\u72b6\u6001\u673a\u68c0\u67e5\u70b9\u52a0\u5165\u7cfb\u7edf\u770b\u95e8\u72d7\u5582\u72d7\u903b\u8f91\u4e2d\u3002\u5982\u679c\u7f51\u7edc\u7ebf\u7a0b\u56e0\u672a\u77e5\u539f\u56e0\u5361\u6b7b&#xff0c;\u770b\u95e8\u72d7\u80fd\u590d\u4f4d\u7cfb\u7edf&#xff0c;\u8fd9\u662f\u5de5\u4e1a\u8bbe\u5907\u6700\u540e\u7684\u81ea\u6062\u590d\u4fdd\u969c\u3002<\/li>\n<\/ul>\n<h3>7. \u5e38\u89c1\u95ee\u9898\u6392\u67e5\u6307\u5357&#xff08;\u8e29\u5751\u8bb0\u5f55&#xff09;<\/h3>\n<p>\u5373\u4f7f\u6309\u7167\u6307\u5357\u64cd\u4f5c&#xff0c;\u4e5f\u53ef\u80fd\u4f1a\u9047\u5230\u95ee\u9898\u3002\u8fd9\u91cc\u5217\u51fa\u51e0\u4e2a\u6211\u5e38\u88ab\u95ee\u5230\u7684\u60c5\u51b5&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u73b0\u8c61&#xff1a;SPI\u901a\u4fe1\u5931\u8d25&#xff0c;\u8bfb\u7248\u672c\u53f7\u4e0d\u5bf9\u3002<\/p>\n<ul>\n<li>\u68c0\u67e5&#xff1a;\u9996\u5148\u7528\u903b\u8f91\u5206\u6790\u4eea\u6216\u793a\u6ce2\u5668\u6293\u4e00\u4e0bSPI\u6ce2\u5f62\u3002\u786e\u8ba4SCLK\u3001MOSI\u3001MISO\u3001CSn\u56db\u6839\u7ebf\u90fd\u6709\u4fe1\u53f7&#xff0c;\u4e14CSn\u5728\u901a\u4fe1\u671f\u95f4\u4e3a\u4f4e\u3002\u91cd\u70b9\u770bSCLK\u6781\u6027\u548c\u76f8\u4f4d&#xff08;\u6a21\u5f0f0\u62163&#xff09;\u662f\u5426\u4e0e\u4ee3\u7801\u8bbe\u7f6e\u4e00\u81f4\u3002\u68c0\u67e5\u786c\u4ef6\u8fde\u63a5\u662f\u5426\u6709\u865a\u710a\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u73b0\u8c61&#xff1a;\u80fdPing\u901aIP&#xff0c;\u4f46TCP\u8fde\u63a5\u4e0d\u4e0a\u3002<\/p>\n<ul>\n<li>\u68c0\u67e5&#xff1a;\u5148\u786e\u8ba4\u7535\u8111\u9632\u706b\u5899\u662f\u5426\u5173\u95ed\u6216\u653e\u884c\u4e865000\u7aef\u53e3\u3002\u7528 arp -a \u547d\u4ee4\u67e5\u770b\u7535\u8111\u7684ARP\u8868\u4e2d\u662f\u5426\u6709W5500\u7684MAC\u5730\u5740\u3002\u5982\u679c\u6ca1\u6709&#xff0c;\u8bf4\u660e\u94fe\u8def\u5c42\u901a\u4fe1\u6709\u95ee\u9898&#xff0c;\u68c0\u67e5\u7f51\u7ebf\u3001\u7f51\u7edc\u53d8\u538b\u5668\u3002\u5982\u679c\u6709ARP\u6761\u76ee\u4f46\u8fde\u4e0d\u4e0a&#xff0c;\u56de\u5230\u4ee3\u7801\u68c0\u67e5Socket\u72b6\u6001\u673a\u903b\u8f91&#xff0c;\u7279\u522b\u662f listen() \u51fd\u6570\u662f\u5426\u88ab\u6b63\u786e\u8c03\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u73b0\u8c61&#xff1a;\u8fde\u63a5\u540e&#xff0c;\u53d1\u9001\u6570\u636e\u65e0\u56de\u73af&#xff0c;\u6216\u6570\u636e\u4e0d\u5b8c\u6574\u3002<\/p>\n<ul>\n<li>\u68c0\u67e5&#xff1a;\u5728 recv \u548c send \u540e\u6253\u5370\u5176\u8fd4\u56de\u503c\u3002\u5982\u679c recv \u8fd4\u56de0&#xff0c;\u53ef\u80fd\u662f\u5bf9\u7aef\u5173\u95ed\u4e86\u8fde\u63a5\u3002\u5982\u679c send \u8fd4\u56de SOCKERR_BUSY&#xff08;\u5728ioLibrary\u4e2d\u8868\u73b0\u4e3a\u53d1\u9001\u957f\u5ea6\u5c0f\u4e8e0&#xff1f;\u6ce8\u610f\u5e93\u7248\u672c&#xff09;&#xff0c;\u8bf4\u660eSocket\u53d1\u9001\u7f13\u5b58\u5df2\u6ee1&#xff0c;\u9700\u8981\u7b49\u5f85\u6216\u68c0\u67e5\u53d1\u9001\u903b\u8f91\u662f\u5426\u592a\u5feb\u3002\u786e\u4fdd\u4f60\u7684\u56de\u73af\u53d1\u9001\u4ee3\u7801\u6b63\u786e\u5904\u7406\u4e86 send \u53ef\u80fd\u53ea\u53d1\u9001\u4e86\u90e8\u5206\u6570\u636e\u7684\u60c5\u51b5&#xff08;\u5373\u6211\u4eec\u4ee3\u7801\u4e2d\u7684 while(sent_len &lt; ret) \u5faa\u73af&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u73b0\u8c61&#xff1a;\u957f\u65f6\u95f4\u8fd0\u884c\u540e&#xff0c;\u670d\u52a1\u5668\u65e0\u54cd\u5e94\u3002<\/p>\n<ul>\n<li>\u68c0\u67e5&#xff1a;\u8fd9\u53ef\u80fd\u662f\u5185\u5b58\u6cc4\u6f0f\u6216\u72b6\u6001\u673a\u5361\u6b7b\u5728\u67d0\u4e2a\u5f02\u5e38\u72b6\u6001\u3002\u68c0\u67e5\u662f\u5426\u5728\u67d0\u4e2a\u9519\u8bef\u5206\u652f\u4e2d\u5fd8\u8bb0\u4e86 close() 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