\u4e4b\u524d\u4f7f\u7528keil\u5f00\u53d1stm32\uff0c\u53ef\u4ee5\u52fe\u9009MicroLib\u6765\u4f7f\u7528printf\u51fd\u6570\u4ece\u4e32\u53e3\u8f93\u51fa\u6570\u636e<\/p>\n\n\n\n
int fputc(int ch,FILE *f)\n{\n\tunsigned char temp = ch;\n\tHAL_UART_Transmit(&huart1,&temp,1,0xffff);\n\treturn temp;\n}<\/code><\/pre>\n\n\n\n\u4f46\u662f\u5728CubeMX\u73af\u5883\u4e0b\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u4f3c\u4e4e\u5931\u6548\u4e86\uff0c\u7a0b\u5e8f\u7f16\u8bd1\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\uff0c\u4f46\u662f\u5b9e\u9645\u4e32\u53e3\u65e0\u4efb\u4f55\u8f93\u51fa<\/p>\n\n\n\n
\u4e8e\u662f\u5728\u7f51\u4e0a\u627e\u76f8\u5173\u8d44\u6599\uff0c\u6709\u7f51\u53cb\u5efa\u8bae\u53c2\u8003\u6b63\u70b9\u539f\u5b50\u7684\u6539\u5199\u4f8b\u7a0b\uff0c\u7981\u7528\u534a\u4e3b\u673a\u6a21\u5f0f\u5c31\u53ef\u4ee5\u4e86<\/p>\n\n\n\n
\/\/\u7981\u7528\u534a\u4e3b\u673a\u6a21\u5f0f\npragma import(__use_no_semihosting)\n\/\/\u6807\u51c6\u5e93\u9700\u8981\u7684\u652f\u6301\u51fd\u6570\nstruct __FILE\n{\nint handle;\n};\n\nFILE __stdout;\n\/\/\u5b9a\u4e49_sys_exit()\u4ee5\u907f\u514d\u4f7f\u7528\u534a\u4e3b\u673a\u6a21\u5f0f \nvoid _sys_exit(int x)\n{\nx = x;\n}\nvoid _ttywrch(int ch)\n{\nch = ch;\n}\n\/\/\u91cd\u5b9a\u4e49fputc\u51fd\u6570\nint fputc(int ch, FILE *f)\n{\nHAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff);\nreturn ch;\n}<\/code><\/pre>\n\n\n\n\u4f46\u662f\u8fd9\u4e2a\u65b9\u6cd5\u5728\u4f7f\u7528VSCode+STM32 VS Code Extension\u62d3\u5c55\u7684\u65b9\u5f0f\u4e0b\u5931\u6548\uff0c\u539f\u56e0\u662f\u6b64\u65f6CubeMX\u751f\u6210\u7684gcc\u7f16\u8bd1\u73af\u5883\uff0c\u4e0d\u652f\u6301\u4f7f\u7528pragma import\u547d\u4ee4\u6765\u7981\u7528\u534a\u4e3b\u673a\u6a21\u5f0f\uff0c\u6211\u4f7f\u7528\u7684gcc\u6807\u51c6\u5e93\uff0c\u5728\u6807\u51c6\u5e93\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528_write\u4ee3\u66fffput\u51fd\u6570\u4ee5\u5b9e\u73b0\u91cd\u5b9a\u4e49\u4e32\u53e3\u8f93\u51fa\u529f\u80fd\u3002<\/p>\n\n\n\n
\u5728\u4f60\u7684usart.c\u6587\u4ef6\u4e2d\u5f15\u7528#include <stdio.h>\u5934\u6587\u4ef6\u548cstm32f1xx_hal.h<\/p>\n\n\n\n
\u5728\u6587\u4ef6\u672b\u5c3e\u7528\u6237\u6c99\u7bb1\u73af\u5883\u4e2d\u91cd\u5b9a\u4e49_write\u51fd\u6570<\/p>\n\n\n\n
#include <stdio.h>\n#include <stdlib.h>\n#include \"stm32f1xx_hal.h\"\n\nextern UART_HandleTypeDef huart1;\n\nint _write(int file, char *ptr, int len) {\n int DataIdx;\n for (DataIdx = 0; DataIdx < len; DataIdx++) {\n HAL_UART_Transmit(&huart1, *ptr++, 1, HAL_MAX_DELAY);\n }\n return len;\n}<\/code><\/pre>\n\n\n\n\u7ecf\u8fc7\u6d4b\u8bd5\u53ef\u4ee5\u5b9e\u73b0printf\u51fd\u6570\u7684\u8f93\u51fa\uff0c\u4f46\u662f\u8fd9\u5e76\u6ca1\u6709\u7ed3\u675f\uff0c\u5b9e\u6d4b\u5982\u679c\u4f60\u9700\u8981\u8f93\u51fa\u5c0f\u6570\u8fd8\u662f\u4e0d\u53ef\u4ee5\uff0c\u6240\u4ee5\u6211\u4eec\u8fd8\u9700\u8981\u8bbe\u7f6e\u7f16\u8bd1\u5668\u3002<\/p>\n\n\n\n
\u7531\u4e8evscode\u4f7f\u7528\u7684gcc\u7f16\u8bd1\u5668\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5728cmake\u83dc\u5355\u91cc\u6dfb\u52a0\u94fe\u63a5\u5668\u9009\u9879\u6765\u6253\u5f00\u6d6e\u70b9\u6570\u652f\u6301\u3002<\/p>\n\n\n\n
\u5177\u4f53\u65b9\u6cd5\u4e3a\u5728\u9879\u76ee\u6839\u76ee\u5f55\u4e0b\u7684CMakeLists.txt\u6587\u4ef6\u4e2d\u6dfb\u52a0 -u _printf_float<\/code> \u9009\u9879<\/p>\n\n\n\n# \u8bbe\u7f6e\u94fe\u63a5\u5668\u9009\u9879\n\nset(CMAKE_EXE_LINKER_FLAGS \"${CMAKE_EXE_LINKER_FLAGS} -u _printf_float\")<\/code><\/pre>\n\n\n\n\u81f3\u6b64\u5c31\u53ef\u4ee5\u6109\u5feb\u7684\u4f7f\u7528printf\u51fd\u6570\u5728\u4e32\u53e3\u8f93\u51fa\u6d6e\u70b9\u6570\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e4b\u524d\u4f7f\u7528keil\u5f00\u53d1stm32\uff0c\u53ef\u4ee5\u52fe\u9009MicroLib\u6765\u4f7f\u7528printf\u51fd\u6570\u4ece\u4e32\u53e3\u8f93\u51fa\u6570\u636e \u4f46\u662f\u5728CubeM […]<\/p>\n","protected":false},"author":2,"featured_media":459,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[59,8],"tags":[61,62],"class_list":["post-457","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stm32","category-trap","tag-stm32","tag-vscode"],"blocksy_meta":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/turbostudio.xyz\/wp-content\/uploads\/2025\/04\/%E4%BD%BF%E7%94%A8-STM32-%E7%94%9F%E6%88%90%E5%9B%BE%E5%83%8F.png?fit=1536%2C1536&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/posts\/457","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=457"}],"version-history":[{"count":2,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/posts\/457\/revisions"}],"predecessor-version":[{"id":462,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/posts\/457\/revisions\/462"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=\/wp\/v2\/media\/459"}],"wp:attachment":[{"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/turbostudio.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}