{"id":77992,"date":"2026-02-25T21:41:35","date_gmt":"2026-02-25T13:41:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/77992.html"},"modified":"2026-02-25T21:41:35","modified_gmt":"2026-02-25T13:41:35","slug":"%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90-iap-%e5%8d%87%e7%ba%a7%ef%bc%9a%e4%bb%8e-bootloader-%e5%88%b0-ota-%e7%9a%84%e5%b5%8c%e5%85%a5%e5%bc%8f%e5%9b%ba%e4%bb%b6%e6%9b%b4%e6%96%b0%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/77992.html","title":{"rendered":"\u6df1\u5165\u89e3\u6790 IAP \u5347\u7ea7\uff1a\u4ece BootLoader \u5230 OTA \u7684\u5d4c\u5165\u5f0f\u56fa\u4ef6\u66f4\u65b0\u5b9e\u6218"},"content":{"rendered":"<h3>1. IAP\u5347\u7ea7\u7684\u6838\u5fc3\u6982\u5ff5\u4e0e\u91cd\u8981\u6027<\/h3>\n<p>IAP&#xff08;In-Application Programming&#xff09;\u662f\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u56fa\u4ef6\u66f4\u65b0\u7684\u6838\u5fc3\u6280\u672f&#xff0c;\u5b83\u5141\u8bb8\u8bbe\u5907\u5728\u8fd0\u884c\u4e3b\u7a0b\u5e8f\u7684\u540c\u65f6&#xff0c;\u901a\u8fc7\u8f6f\u4ef6\u65b9\u5f0f\u5b8c\u6210\u81ea\u8eab\u56fa\u4ef6\u7684\u66f4\u65b0\u3002\u8fd9\u79cd\u6280\u672f\u6700\u5927\u7684\u4f18\u52bf\u5728\u4e8e\u4e0d\u9700\u8981\u5916\u90e8\u7f16\u7a0b\u5668&#xff0c;\u4ec5\u901a\u8fc7\u8bbe\u5907\u81ea\u8eab\u7684\u7a0b\u5e8f\u903b\u8f91\u5c31\u80fd\u5b8c\u6210\u56fa\u4ef6\u5199\u5165&#xff0c;\u7279\u522b\u9002\u5408\u91cf\u4ea7\u540e\u7684\u8bbe\u5907\u7ef4\u62a4\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;IAP\u901a\u5e38\u4e0eBootLoader\u914d\u5408\u4f7f\u7528&#xff0c;\u5f62\u6210\u53cc\u5206\u533a\u7ed3\u6784\u3002\u8fd9\u79cd\u8bbe\u8ba1\u4e3b\u8981\u662f\u4e3a\u4e86\u9632\u6b62\u8bbe\u5907&#034;\u53d8\u7816&#034;\u2014\u2014\u60f3\u8c61\u4e00\u4e0b&#xff0c;\u5982\u679c\u66f4\u65b0\u8fc7\u7a0b\u4e2d\u7a81\u7136\u65ad\u7535\u6216\u8005\u56fa\u4ef6\u4f20\u8f93\u51fa\u9519&#xff0c;\u8bbe\u5907\u8fd8\u80fd\u901a\u8fc7BootLoader\u6062\u590d\u5230\u4e00\u4e2a\u53ef\u7528\u7684\u72b6\u6001\u3002\u6211\u7ecf\u5386\u8fc7\u4e00\u6b21\u60e8\u75db\u7684\u6559\u8bad&#xff1a;\u65e9\u671f\u505a\u4e00\u4e2a\u667a\u80fd\u5bb6\u5c45\u9879\u76ee\u65f6&#xff0c;\u4e3a\u4e86\u8282\u7701Flash\u7a7a\u95f4&#xff0c;\u6ca1\u6709\u505a\u53cc\u5206\u533a\u8bbe\u8ba1&#xff0c;\u7ed3\u679c\u4e00\u6b21OTA\u5347\u7ea7\u5931\u8d25\u5bfc\u81f4\u6574\u6279\u8bbe\u5907\u62a5\u5e9f&#xff0c;\u635f\u5931\u60e8\u91cd\u3002<\/p>\n<p>IAP\u7684\u5e94\u7528\u573a\u666f\u975e\u5e38\u5e7f\u6cdb\u3002\u6bd4\u5982\u667a\u80fd\u7535\u8868\u9700\u8981\u5b9a\u671f\u66f4\u65b0\u8ba1\u91cf\u7b97\u6cd5&#xff0c;\u5de5\u4e1a\u63a7\u5236\u5668\u9700\u8981\u4fee\u590d\u5b89\u5168\u6f0f\u6d1e&#xff0c;\u667a\u80fd\u7a7f\u6234\u8bbe\u5907\u9700\u8981\u589e\u52a0\u65b0\u529f\u80fd\u2014\u2014\u8fd9\u4e9b\u90fd\u79bb\u4e0d\u5f00\u53ef\u9760\u7684IAP\u673a\u5236\u3002\u7279\u522b\u662f\u5728\u7269\u8054\u7f51\u8bbe\u5907\u4e2d&#xff0c;\u968f\u7740\u8bbe\u5907\u6570\u91cf\u7684\u589e\u52a0&#xff0c;\u73b0\u573a\u7ef4\u62a4\u6210\u672c\u4f1a\u8d8a\u6765\u8d8a\u9ad8&#xff0c;\u4e00\u4e2a\u7a33\u5b9a\u7684\u8fdc\u7a0b\u5347\u7ea7\u65b9\u6848\u80fd\u8282\u7701\u5927\u91cf\u7684\u4eba\u529b\u7269\u529b\u3002<\/p>\n<h3>2. BootLoader\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0<\/h3>\n<h4>2.1 BootLoader\u7684\u6838\u5fc3\u804c\u8d23<\/h4>\n<p>BootLoader\u5c31\u50cf\u662f\u8bbe\u5907\u7684&#034;\u6025\u6551\u5458&#034;&#xff0c;\u5b83\u8d1f\u8d23\u5728\u6700\u5173\u952e\u7684\u65f6\u5019\u786e\u4fdd\u8bbe\u5907\u80fd\u6b63\u5e38\u542f\u52a8\u3002\u4e00\u4e2a\u5b8c\u6574\u7684BootLoader\u9700\u8981\u5b9e\u73b0\u56db\u4e2a\u4e3b\u8981\u529f\u80fd&#xff1a;\u521d\u59cb\u5316\u786c\u4ef6\u73af\u5883\u3001\u68c0\u67e5\u5347\u7ea7\u6807\u5fd7\u3001\u6267\u884c\u56fa\u4ef6\u66f4\u65b0\u3001\u8df3\u8f6c\u5230\u4e3b\u7a0b\u5e8f\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;BootLoader\u7684\u4ee3\u7801\u8981\u5c3d\u53ef\u80fd\u7b80\u6d01\u53ef\u9760\u3002\u6211\u901a\u5e38\u4f1a\u628aBootLoader\u7684\u5927\u5c0f\u63a7\u5236\u57284-8KB\u4e4b\u95f4&#xff0c;\u8fd9\u4e2a\u8303\u56f4\u65e2\u80fd\u6ee1\u8db3\u57fa\u672c\u529f\u80fd&#xff0c;\u53c8\u4e0d\u4f1a\u5360\u7528\u592a\u591aFlash\u7a7a\u95f4\u3002\u8bb0\u5f97\u4f7f\u7528const\u5173\u952e\u5b57\u5c06\u5e38\u91cf\u6570\u636e\u653e\u5728ROM\u533a&#xff0c;\u907f\u514d\u4e0d\u5fc5\u8981\u7684RAM\u5360\u7528\u3002<\/p>\n<p>\/\/ BootLoader\u7684\u6700\u5c0f\u786c\u4ef6\u521d\u59cb\u5316\u793a\u4f8b<br \/>\nvoid hardware_init(void)<br \/>\n{<br \/>\n    \/\/ \u521d\u59cb\u5316\u65f6\u949f\u7cfb\u7edf<br \/>\n    SystemInit();<\/p>\n<p>    \/\/ \u521d\u59cb\u5316Flash\u63a5\u53e3<br \/>\n    FLASH_Init();<\/p>\n<p>    \/\/ \u521d\u59cb\u5316\u901a\u4fe1\u63a5\u53e3&#xff08;\u5982\u4e32\u53e3&#xff09;<br \/>\n    UART_Init(115200);<\/p>\n<p>    \/\/ \u521d\u59cb\u5316\u770b\u95e8\u72d7<br \/>\n    IWDG_Init(IWDG_PRESCALER_32, 1000);<br \/>\n}<\/p>\n<h4>2.2 \u5185\u5b58\u5206\u533a\u7b56\u7565<\/h4>\n<p>\u5408\u7406\u7684\u5185\u5b58\u5206\u533a\u662fIAP\u6210\u529f\u7684\u5173\u952e\u3002\u5e38\u89c1\u7684\u5206\u533a\u65b9\u5f0f\u5305\u62ec&#xff1a;BootLoader\u533a\u3001\u4e3b\u7a0b\u5e8f\u533a\u3001\u5907\u4efd\u533a\u3001\u5347\u7ea7\u6807\u5fd7\u533a\u3002\u6bcf\u4e2a\u533a\u57df\u7684\u5927\u5c0f\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u7cbe\u5fc3\u8bbe\u8ba1\u3002<\/p>\n<p>\u4ee5STM32F103\u7cfb\u5217\u4e3a\u4f8b&#xff0c;\u5178\u578b\u7684256KB Flash\u53ef\u4ee5\u8fd9\u6837\u5206\u533a&#xff1a;<\/p>\n<ul>\n<li>BootLoader: 16KB (0x08000000 &#8211; 0x08003FFF)<\/li>\n<li>\u4e3b\u7a0b\u5e8f: 192KB (0x08004000 &#8211; 0x08033FFF)<\/li>\n<li>\u5907\u4efd\u533a: 32KB (0x08034000 &#8211; 0x0803BFFF)<\/li>\n<li>\u914d\u7f6e\u533a: 16KB (0x0803C000 &#8211; 0x0803FFFF)<\/li>\n<\/ul>\n<p>\u5907\u4efd\u533a\u7684\u4f5c\u7528\u5f88\u91cd\u8981&#xff0c;\u5b83\u53ef\u4ee5\u5728\u5347\u7ea7\u5931\u8d25\u65f6\u6062\u590d\u4e4b\u524d\u7684\u7248\u672c\u3002\u6211\u5728\u8bbe\u8ba1\u533b\u7597\u8bbe\u5907\u65f6&#xff0c;\u751a\u81f3\u91c7\u7528\u4e86\u4e09\u5907\u4efd\u673a\u5236&#xff0c;\u786e\u4fdd\u4e07\u65e0\u4e00\u5931\u3002<\/p>\n<h3>3. \u56fa\u4ef6\u4f20\u8f93\u4e0e\u6821\u9a8c\u673a\u5236<\/h3>\n<h4>3.1 \u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93<\/h4>\n<p>\u56fa\u4ef6\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u6700\u6015\u7684\u5c31\u662f\u6570\u636e\u4e22\u5931\u6216\u9519\u8bef\u3002\u6211\u63a8\u8350\u4f7f\u7528YModem\u534f\u8bae\u6216\u8005\u81ea\u5b9a\u4e49\u7684\u53ef\u9760\u4f20\u8f93\u534f\u8bae\u3002YModem\u7684\u4f18\u52bf\u5728\u4e8e\u6709\u5b8c\u6574\u7684\u6821\u9a8c\u673a\u5236\u548c\u91cd\u4f20\u673a\u5236&#xff0c;\u975e\u5e38\u9002\u5408\u5d4c\u5165\u5f0f\u73af\u5883\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u4f20\u8f93\u5c42\u8981\u5904\u7406\u597d\u4ee5\u4e0b\u51e0\u4e2a\u95ee\u9898&#xff1a;\u5206\u5305\u5927\u5c0f\u8981\u5408\u7406&#xff08;\u901a\u5e38256-1024\u5b57\u8282&#xff09;&#xff0c;\u8981\u6709\u8d85\u65f6\u91cd\u4f20\u673a\u5236&#xff0c;\u8fd8\u8981\u652f\u6301\u65ad\u70b9\u7eed\u4f20\u3002\u7279\u522b\u662f\u5bf9\u4e8e\u65e0\u7ebf\u4f20\u8f93\u573a\u666f&#xff0c;\u7f51\u7edc\u4e0d\u7a33\u5b9a\u662f\u5e38\u6001&#xff0c;\u5fc5\u987b\u6709\u5b8c\u5584\u7684\u9519\u8bef\u5904\u7406\u3002<\/p>\n<p>\/\/ \u7b80\u5355\u7684\u6570\u636e\u5305\u6821\u9a8c\u793a\u4f8b<br \/>\ntypedef struct {<br \/>\n    uint32_t seq;        \/\/ \u5e8f\u5217\u53f7<br \/>\n    uint32_t total_size; \/\/ \u603b\u5927\u5c0f<br \/>\n    uint16_t crc16;      \/\/ CRC\u6821\u9a8c<br \/>\n    uint8_t data[256];   \/\/ \u6570\u636e\u8d1f\u8f7d<br \/>\n} firmware_packet_t;<\/p>\n<p>uint16_t calculate_crc16(const uint8_t *data, uint32_t length)<br \/>\n{<br \/>\n    uint16_t crc &#061; 0xFFFF;<br \/>\n    for(uint32_t i &#061; 0; i &lt; length; i&#043;&#043;) {<br \/>\n        crc ^&#061; data[i];<br \/>\n        for(uint8_t j &#061; 0; j &lt; 8; j&#043;&#043;) {<br \/>\n            if(crc &amp; 0x0001) {<br \/>\n                crc &#061; (crc &gt;&gt; 1) ^ 0xA001;<br \/>\n            } else {<br \/>\n                crc &#061; crc &gt;&gt; 1;<br \/>\n            }<br \/>\n        }<br \/>\n    }<br \/>\n    return crc;<br \/>\n}<\/p>\n<h4>3.2 \u591a\u91cd\u6821\u9a8c\u4fdd\u969c<\/h4>\n<p>\u6821\u9a8c\u662fIAP\u8fc7\u7a0b\u4e2d\u6700\u91cd\u8981\u7684\u5b89\u5168\u63aa\u65bd\u3002\u6211\u5efa\u8bae\u81f3\u5c11\u505a\u4e09\u91cd\u6821\u9a8c&#xff1a;\u4f20\u8f93\u6821\u9a8c\u3001\u5199\u5165\u524d\u6821\u9a8c\u3001\u5199\u5165\u540e\u6821\u9a8c\u3002CRC32\u9002\u5408\u505a\u4f20\u8f93\u6821\u9a8c&#xff0c;SHA256\u9002\u5408\u505a\u5b8c\u6574\u6027\u9a8c\u8bc1\u3002<\/p>\n<p>\u6709\u4e00\u6b21\u6211\u4eec\u5728\u5de5\u5382\u91cf\u4ea7\u65f6\u53d1\u73b0&#xff0c;\u5076\u5c14\u4f1a\u6709\u8bbe\u5907\u5347\u7ea7\u540e\u65e0\u6cd5\u542f\u52a8\u3002\u540e\u6765\u6392\u67e5\u53d1\u73b0\u662fFlash\u5199\u5165\u8fc7\u7a0b\u4e2d\u53d7\u5230\u7535\u6e90\u5e72\u6270&#xff0c;\u5bfc\u81f4\u90e8\u5206\u6570\u636e\u9519\u8bef\u3002\u901a\u8fc7\u5728\u5199\u5165\u540e\u589e\u52a0\u5168\u7247\u6821\u9a8c&#xff0c;\u5f7b\u5e95\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<h3>4. Flash\u64cd\u4f5c\u4e0e\u9632\u53d8\u7816\u7b56\u7565<\/h3>\n<h4>4.1 \u5b89\u5168\u7684Flash\u64cd\u4f5c<\/h4>\n<p>\u4e0d\u540c\u578b\u53f7\u7684MCU\u7684Flash\u64cd\u4f5c\u65b9\u5f0f\u5dee\u5f02\u5f88\u5927\u3002STM32F1\u7cfb\u5217\u662f\u9875\u5f0f\u64e6\u9664&#xff0c;\u6bcf\u98751-2KB&#xff1b;STM32F4\u7cfb\u5217\u662f\u6247\u533a\u64e6\u9664&#xff0c;\u5927\u5c0f\u4ece16KB\u5230128KB\u4e0d\u7b49\u3002\u64cd\u4f5c\u524d\u4e00\u5b9a\u8981\u4ed4\u7ec6\u9605\u8bfb\u82af\u7247\u624b\u518c\u3002<\/p>\n<p>\u64e6\u5199Flash\u65f6\u8981\u6ce8\u610f&#xff1a;\u5fc5\u987b\u5148\u64e6\u540e\u5199&#xff0c;\u64cd\u4f5c\u671f\u95f4\u4e0d\u80fd\u65ad\u7535&#xff0c;\u8fd8\u8981\u6ce8\u610f\u5bf9\u9f50\u8981\u6c42\u3002\u6211\u4e60\u60ef\u5728\u64e6\u5199\u524d\u5173\u95ed\u4e2d\u65ad&#xff0c;\u64cd\u4f5c\u5b8c\u6210\u540e\u518d\u6062\u590d&#xff0c;\u907f\u514d\u88ab\u6253\u65ad\u3002<\/p>\n<p>\/\/ STM32 Flash\u64cd\u4f5c\u793a\u4f8b<br \/>\nvoid flash_erase_sector(uint32_t sector_addr)<br \/>\n{<br \/>\n    FLASH_Unlock();<br \/>\n    FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);<\/p>\n<p>    while(FLASH_ErasePage(sector_addr) !&#061; FLASH_COMPLETE);<\/p>\n<p>    FLASH_Lock();<br \/>\n}<\/p>\n<p>void flash_program_data(uint32_t addr, uint8_t *data, uint32_t len)<br \/>\n{<br \/>\n    FLASH_Unlock();<\/p>\n<p>    for(uint32_t i &#061; 0; i &lt; len; i &#043;&#061; 4) {<br \/>\n        uint32_t word_data &#061; *(uint32_t*)(data &#043; i);<br \/>\n        while(FLASH_ProgramWord(addr &#043; i, word_data) !&#061; FLASH_COMPLETE);<br \/>\n    }<\/p>\n<p>    FLASH_Lock();<br \/>\n}<\/p>\n<h4>4.2 \u9632\u53d8\u7816\u673a\u5236\u8bbe\u8ba1<\/h4>\n<p>\u9632\u53d8\u7816\u662fIAP\u8bbe\u8ba1\u7684\u91cd\u4e2d\u4e4b\u91cd\u3002\u6211\u603b\u7ed3\u4e86\u51e0\u79cd\u6709\u6548\u7684\u4fdd\u62a4\u673a\u5236&#xff1a;\u9996\u5148\u662f\u8981\u6709\u5907\u4efd\u7cfb\u7edf&#xff0c;\u786e\u4fdd\u5347\u7ea7\u5931\u8d25\u65f6\u53ef\u4ee5\u56de\u9000&#xff1b;\u5176\u6b21\u662f\u8981\u6709\u770b\u95e8\u72d7\u76d1\u63a7&#xff0c;\u9632\u6b62\u7a0b\u5e8f\u5361\u6b7b&#xff1b;\u6700\u540e\u8fd8\u8981\u6709\u7535\u6e90\u76d1\u6d4b&#xff0c;\u5728\u7535\u538b\u4e0d\u7a33\u65f6\u62d2\u7edd\u5347\u7ea7\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u6211\u8fd8\u4f1a\u589e\u52a0\u4e00\u4e2a&#034;\u5b89\u5168\u6a21\u5f0f&#034;&#xff1a;\u5982\u679c\u8fde\u7eed\u5347\u7ea7\u5931\u8d25\u591a\u6b21&#xff0c;\u8bbe\u5907\u4f1a\u81ea\u52a8\u8fdb\u5165\u5b89\u5168\u6a21\u5f0f&#xff0c;\u53ea\u4fdd\u7559\u6700\u57fa\u672c\u7684\u901a\u4fe1\u529f\u80fd&#xff0c;\u7b49\u5f85\u6280\u672f\u4eba\u5458\u5904\u7406\u3002\u8fd9\u79cd\u8bbe\u8ba1\u5728\u5de5\u4e1a\u73b0\u573a\u7279\u522b\u6709\u7528&#xff0c;\u907f\u514d\u4e86\u8bbe\u5907\u5b8c\u5168&#034;\u53d8\u7816&#034;\u7684\u98ce\u9669\u3002<\/p>\n<h3>5. 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