最终成功编译mqtt模块，不管实际运行，编译结果：make[2]: Entering directory '/home/workspaceLiteOS/demos/agenttiny_mqtt'make[2]: Leaving directory '/home/workspaceLiteOS/demos/agenttiny_mqtt'

【日志信息 - 7】Hardware/Src/hal_spi_flash.c: In function 'prv_spi_flash_write_enable':Hardware/Src/hal_spi_flash.c:160:5: error: implicit declaration of function 'SPI_FLASH_CS_ENABLE'; did you mean 'SPI_FLASH_ENABLE'? [-Werror=implicit-function-declaration]160 | SPI_FLASH_CS_ENABLE();| ^~~~~~~~~~~~~~~~~~~| SPI_FLASH_ENABLEHardware/Src/hal_spi_flash.c:162:5: error: implicit declaration of function 'SPI_FLASH_CS_DISABLE'; did you mean 'SPI_FLASH_DISABLE'? [-Werror=implicit-function-declaration]162 | SPI_FLASH_CS_DISABLE();| ^~~~~~~~~~~~~~~~~~~~| SPI_FLASH_DISABLEcc1: all warnings being treated as errorsmake[1]: *** [/home/workspaceLiteOS/build/mk/module.mk:60: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/obj/targets/STM32F407_ATK_Explorer/Hardware/Src/hal_spi_flash.o] Error 1解决方法：按照自己调试的开发板子，配置SPI接口，STM32F407_ATK没有SPI_CS脚，把开关宏特殊处理下；

【日志信息 - 6】/home/workspaceLiteOS/targets/STM32F407_ATK_Explorer/Src/flash_adaptor.c:66: undefined reference to `hal_spi_flash_read'arm-none-eabi-ld: /home/workspaceLiteOS/targets/STM32F407_ATK_Explorer/Src/flash_adaptor.c:76: undefined reference to `hal_spi_flash_erase_write'arm-none-eabi-ld: /home/workspaceLiteOS/targets/STM32F407_ATK_Explorer/Src/flash_adaptor.c:53: undefined reference to `hal_spi_flash_erase_write'arm-none-eabi-ld: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/lib/libSTM32F407_ATK_Explorer.a(flash_adaptor.o): in function `flash_adaptor_init':/home/workspaceLiteOS/targets/STM32F407_ATK_Explorer/Src/flash_adaptor.c:88: undefined reference to `hal_spi_flash_config'arm-none-eabi-ld: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/lib/libSTM32F407_ATK_Explorer.a(flash_adaptor.o): in function `flash_adaptor_read_mqtt_info':/home/workspaceLiteOS/targets/STM32F407_ATK_Explorer/Src/flash_adaptor.c:108: undefined reference to `hal_spi_flash_read'make: *** [Makefile:74: Huawei_LiteOS] Error 1解决方法：配置stm32f4xx_hal_conf.h文件，打开宏定义“HAL_SPI_MODULE_ENABLED”；

【日志信息 - 5】make[1]: Entering directory '/home/workspaceLiteOS/targets/STM32F407_ATK_Explorer'Src/flash_adaptor.c:34:10: fatal error: board_ota.h: No such file or directory34 | #include "board_ota.h"| ^~~~~~~~~~~~~compilation terminated.解决方法： 拷贝board_ota.c、board_ota.h对应路径；

【日志信息 - 4】make[1]: Entering directory '/home/workspaceLiteOS/subgateway/targets/STM32F407_ATK_Explorer'Hardware/Src/hal_flash.c: In function 'prv_flash_get_sector':Hardware/Src/hal_flash.c:94:18: error: 'FLASH_SECTOR_12' undeclared (first use in this function); did you mean 'FLASH_SECTOR_11'?94 | sector = FLASH_SECTOR_12;| ^~~~~~~~~~~~~~~| FLASH_SECTOR_11Hardware/Src/hal_flash.c:94:18: note: each undeclared identifier is reported only once for each function it appears inHardware/Src/hal_flash.c:96:18: error: 'FLASH_SECTOR_13' undeclared (first use in this function); did you mean 'FLASH_SECTOR_11'?96 | sector = FLASH_SECTOR_13;| ^~~~~~~~~~~~~~~| FLASH_SECTOR_11… ...解决方法： 修改hal_flash.c、hal_flash.h，按照芯片手册中的STM32F40xxx Flash module organiation；

【日志信息 - 3】make[1]: Entering directory '/home/workspaceLiteOS/targets/STM32F407_ATK_Explorer'Src/flash_adaptor.c:30:10: fatal error: hal_spi_flash.h: No such file or directory30 | #include "hal_spi_flash.h"| ^~~~~~~~~~~~~~~~~compilation terminated.解决方法： 增加Hardware文件，拷贝hal_spi_flash.c、hal_spi_flash.h、hal_flash.c、hal_flash.h对应文件路下；

【日志信息 - 2】STM32F429IGTx_FIRE和STM32F407_ATK代码工程做了对比，现在编译错误变成下面链接错误了。arm-none-eabi-ld: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/lib/libbsp.a(demo_entry.o):(.rodata+0x4): undefined reference to `flash_adaptor_write_mqtt_info'arm-none-eabi-ld: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/lib/libbsp.a(demo_entry.o):(.rodata+0x8): undefined reference to `flash_adaptor_read_mqtt_info'make: *** [Makefile:74: Huawei_LiteOS] Error 1解决方法：Makefile 添加化编译文件。

【日志信息】make[1]: Entering directory '/home/.../workspaceLiteOS/targets/bsp'common/demo_entry.c:50:10: fatal error: flash_adaptor.h: No such file or directory50 | #include "flash_adaptor.h"| ^~~~~~~~~~~~~~~~~compilation terminated.make[1]: *** [/home/.../workspaceLiteOS/build/mk/module.mk:60: /home/.../workspaceLiteOS/out/STM32F407_ATK_Explorer/obj/targets/bsp/common/demo_entry.o] Error 1make[1]: Leaving directory '/home/.../workspaceLiteOS/targets/bsp'解决方法：把flash_adaptor.c、flash_adaptor.h拷贝到对应路径下，Makefile 添加化编译文件。

先感谢下，开源平台，开源项目（遵循BSD-3开源许可协议），因此个人把此问题做一个新人分享！首先，基础知识需要自己去了解，LiteOS组件方面需要了解资料：https://gitee.com/LiteOS/LiteOS_Components/blob/master/README.md重点：1、Kconfig 组件配置文件，通过该文件将组件纳入到LiteOS的菜单项界面中管理，编写时可参考已有组件的Kconfig文件进行修改；2、.mk用于导出组件的对外头文件，供其他组件或模块调用本组件中的API；3、Makefile 组件化编译文件，通过该文件将组件加入到Huawei LiteOS的组件化编译框架中；

回复：devin.zhang 发表于 2021-8-4 10:00      Agent Tiny Mqtt Demo 只是在429的板子下的例程，你要移到407板子，需要自己修改，429工程下有很是的，只能去看源代码了。因为要评估是否用LiteOS，个人是看好5.0.0 希望评估时间来得及，实在不行只能去弄2018年版本了。所以急着能用LiteOS 5.0.0 MQTT测试，其他裸机、ucosii资源多在STM32F407开发板上很快就打通了阿里云，Onenet。今天确实做了对比，现在编译错误变成下面链接错误了。arm-none-eabi-ld: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/lib/libbsp.a(demo_entry.o):(.rodata+0x4): undefined reference to `flash_adaptor_write_mqtt_info'arm-none-eabi-ld: /home/workspaceLiteOS/out/STM32F407_ATK_Explorer/lib/libbsp.a(demo_entry.o):(.rodata+0x8): undefined reference to `flash_adaptor_read_mqtt_info'make: *** [Makefile:74: Huawei_LiteOS] Error 1