Kernel RTC

rtt4.0.4版本下rt_hw_rtc_register函数定义重复错误

发布于 2022-01-11 16:15:09 浏览：1244 订阅该版

[tocm]

在用RT-THREAD studio 2.1.4生成内核为4.0.4的工程时，如果启用RTC设备，则在编译时，会报如下错误：
```
> 5:02:47 **** Incremental Build of configuration Debug for project T1 ****
make -j8 all 
arm-none-eabi-gcc "../drivers/drv_rtc.c"
arm-none-eabi-gcc "../drivers/drv_wdt.c"
arm-none-eabi-gcc "../cubemx/Src/main.c"
arm-none-eabi-gcc "../cubemx/Src/stm32f4xx_hal_msp.c"
arm-none-eabi-gcc "../applications/main.c"
../drivers/drv_rtc.c:211:17: error: conflicting types for 'rt_hw_rtc_register'
 static rt_err_t rt_hw_rtc_register(rt_device_t device, const char *name, rt_uint32_t flag)
                 ^
In file included from E:\Project\RTT-TEST\T1\rt-thread\components\drivers\include/rtdevice.h:33:0,
                 from ../drivers/drv_rtc.c:13:
E:\Project\RTT-TEST\T1\rt-thread\components\drivers\include/drivers/rtc.h:42:10: note: previous declaration of 'rt_hw_rtc_register' was here
 rt_err_t rt_hw_rtc_register(rt_rtc_dev_t  *rtc,
          ^
make: *** [drivers/subdir.mk:69: drivers/drv_rtc.o] Error 1
make: *** Waiting for unfinished jobs....
"make -j8 all" terminated with exit code 2. Build might be incomplete.

15:02:51 Build Failed. 3 errors, 0 warnings. (took 3s.735ms)
```
_查了源码，发现在rtc.h里声明的rt_hw_rtc_register()函数和drv_rtc.h里的重复了。但实际上rtc.c里的rt_hw_rtc_register并没有被调用过。注释掉此函数，编译通过。_

## 问题
rtc.c中的函数既然无用，为什么还要写呢4.0.4这个版本发布时，没有遇到这种情况吗？

mysterywolf 认证专家 2022-01-11

https://github.com/mysterywolf

tyrael_cui 2022-01-12

这家伙很懒，什么也没写！

LeonRT 2022-05-31

hello

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4 个回答

出出啊 2022-01-11

致男人们：劝说是不会有成果的。 —— 《单向街》

mikros 2022-01-20

这家伙很懒，什么也没写！

r59461900 2022-11-21

这家伙很懒，什么也没写！

10:30:43 **** Build of configuration Debug for project led ****
make -j2 all 
arm-none-eabi-gcc "../rt-thread/src/clock.c"
arm-none-eabi-gcc "../rt-thread/src/components.c"
arm-none-eabi-gcc "../rt-thread/src/device.c"
arm-none-eabi-gcc "../rt-thread/src/idle.c"
arm-none-eabi-gcc "../rt-thread/src/ipc.c"
arm-none-eabi-gcc "../rt-thread/src/irq.c"
arm-none-eabi-gcc "../rt-thread/src/kservice.c"
arm-none-eabi-gcc "../rt-thread/src/mem.c"
arm-none-eabi-gcc "../rt-thread/src/mempool.c"
arm-none-eabi-gcc "../rt-thread/src/object.c"
arm-none-eabi-gcc "../rt-thread/src/scheduler.c"
arm-none-eabi-gcc "../rt-thread/src/thread.c"
arm-none-eabi-gcc "../rt-thread/src/timer.c"
arm-none-eabi-gcc "../rt-thread/libcpu/arm/cortex-m4/context_gcc.S"
arm-none-eabi-gcc "../rt-thread/libcpu/arm/cortex-m4/cpuport.c"
arm-none-eabi-gcc "../rt-thread/libcpu/arm/common/backtrace.c"
arm-none-eabi-gcc "../rt-thread/libcpu/arm/common/div0.c"
arm-none-eabi-gcc "../rt-thread/libcpu/arm/common/showmem.c"
arm-none-eabi-gcc "../rt-thread/components/utilities/ulog/backend/console_be.c"
arm-none-eabi-gcc "../rt-thread/components/utilities/ulog/ulog.c"
arm-none-eabi-gcc "../rt-thread/components/libc/compilers/newlib/syscalls.c"
arm-none-eabi-gcc "../rt-thread/components/libc/compilers/common/stdlib.c"
arm-none-eabi-gcc "../rt-thread/components/libc/compilers/common/time.c"
arm-none-eabi-gcc "../rt-thread/components/finsh/cmd.c"
arm-none-eabi-gcc "../rt-thread/components/finsh/msh.c"
arm-none-eabi-gcc "../rt-thread/components/finsh/shell.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/serial/serial.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/rtc/alarm.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/rtc/rtc.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/misc/pin.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/completion.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/dataqueue.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/pipe.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/ringblk_buf.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/ringbuffer.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/waitqueue.c"
arm-none-eabi-gcc "../rt-thread/components/drivers/ipc/workqueue.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cec.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cortex.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_crc.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cryp.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cryp_ex.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rng.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc_ex.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_usart.c"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/CMSIS/Device/ST/STM32F4xx/Source/Templates/gcc/startup_stm32f407xx.s"
arm-none-eabi-gcc "../libraries/STM32F4xx_HAL/CMSIS/Device/ST/STM32F4xx/Source/Templates/system_stm32f4xx.c"
arm-none-eabi-gcc "../libraries/HAL_Drivers/drv_common.c"
arm-none-eabi-gcc "../libraries/HAL_Drivers/drv_gpio.c"
arm-none-eabi-gcc "../libraries/HAL_Drivers/drv_rtc.c"
../libraries/HAL_Drivers/drv_rtc.c:258:17: error: conflicting types for 'rt_hw_rtc_register'
 static rt_err_t rt_hw_rtc_register(rt_device_t device, const char *name, rt_uint32_t flag)
                 ^
In file included from D:\rt-thread\led\led\rt-thread\components\drivers\include/rtdevice.h:33:0,
                 from D:\rt-thread\led\led\libraries\HAL_Drivers/drv_common.h:16,
                 from D:\rt-thread\led\led\board/board.h:16,
                 from ../libraries/HAL_Drivers/drv_rtc.c:11:
D:\rt-thread\led\led\rt-thread\components\drivers\include/drivers/rtc.h:42:10: note: previous declaration of 'rt_hw_rtc_register' was here
 rt_err_t rt_hw_rtc_register(rt_rtc_dev_t  *rtc,
          ^
make: *** [libraries/HAL_Drivers/subdir.mk:27: libraries/HAL_Drivers/drv_rtc.o] Error 1
"make -j2 all" terminated with exit code 2. Build might be incomplete.

10:30:51 Build Failed. 2 errors, 0 warnings. (took 8s.858ms)