未定义的参考 xTaskCreate(),vTaskDelay() FreeRTOS stm32 with ARM_CM4F

Question

22:24:01 **** Incremental Build of configuration Release for project FreeRTOS_tutoeial **** Info: Internal Builder is used for build arm-atollic-eabi-gcc -o FreeRTOS_tutoeial.elf Libraries\STM32F4xx_StdPeriph_Driver\src\misc.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_adc.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_can.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_crc.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_cryp.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_cryp_aes.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_cryp_des.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_cryp_tdes.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_dac.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_dbgmcu.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_dcmi.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_dma.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_exti.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_flash.o Librarie s\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_fsmc.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_gpio.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_hash.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_hash_md5.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_hash_sha1.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_i2c.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_iwdg.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_pwr.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_rcc.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_rng.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_rtc.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_sdio.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_spi.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_syscfg.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_tim.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_usart.o Libraries\STM32F4xx_StdPeriph_Driver\src\stm32f4xx_wwdg.o src\main.o src\st artup_stm32f40xx.o src\stm32f4xx_it.o src\syscalls.o src\system_stm32f4xx.o src\tiny_printf.o -mthumb -mcpu=cortex-m4 -T../stm32f4_flash.ld -specs=nosys.specs -static -Wl,-cref,-u,Reset_Handler -Wl,-Map=FreeRTOS_tutoeial.map -Wl,--gc-sections -Wl,--defsym=malloc_getpagesize_P=0x80 -Wl,--start-group -lc -lm -Wl,--end-group -specs=nano.specs src\main.o: In function mytask1': main.c:(.text.mytask1+0x12): undefined reference to vTaskDelay' src\main.o: In function main': main.c:(.text.startup.main+0x10): undefined reference to xTaskCreate' main.c:(.text.startup.main+0x14): undefined reference to `vTaskStartScheduler' collect2.exe: error: ld returned 1 exit status

22:24:02 Build Finished (took 556ms)

Answer 1

Adding the .h files does not add the corresponding .c files.

You need to add to the project all the freeRTOS .c files.

Answer 2

In my case, some freeRTOS files were missing. So I downloaded the needed files from the freeRTOS Github repository , and it worked.