编不成啊，用的studio 7，崩溃。电脑系统又装不了低版本的，这个版本网上几乎找不到任何教程资料。

------ Rebuild All started: Project: LED2.5, Configuration: Debug AVR ------
Build started.
Project "LED2.5.cproj" (Clean target(s)):
Target "Clean" in file "C:\Program Files\Atmel\Studio\7.0\Vs\Compiler.targets" from project "C:\Users\Administrator\Desktop\led_2way_2.5\LED2.5\LED2.5\LED2.5.cproj" (entry point):
Task "RunCompilerTask"
Shell Utils Path C:\Program Files\Atmel\Studio\7.0\shellUtils
C:\Program Files\Atmel\Studio\7.0\shellUtils\make.exe clean
rm -rf main.o
rm -rf main.d
rm -rf "LED2.5.elf" "LED2.5.a" "LED2.5.hex" "LED2.5.lss" "LED2.5.eep" "LED2.5.map" "LED2.5.srec" "LED2.5.usersignatures"
Done executing task "RunCompilerTask".
Done building target "Clean" in project "LED2.5.cproj".
Done building project "LED2.5.cproj".
Build succeeded.
------ Rebuild All started: Project: LED2.5, Configuration: Debug AVR ------
Build started.
Project "LED2.5.cproj" (default targets):
Target "PreBuildEvent" skipped, due to false condition; ('$(PreBuildEvent)'!='') was evaluated as (''!='').
Target "CoreBuild" in file "C:\Program Files\Atmel\Studio\7.0\Vs\Compiler.targets" from project "C:\Users\Administrator\Desktop\led_2way_2.5\LED2.5\LED2.5\LED2.5.cproj" (target "Build" depends on it):
Task "RunCompilerTask"
Shell Utils Path C:\Program Files\Atmel\Studio\7.0\shellUtils
C:\Program Files\Atmel\Studio\7.0\shellUtils\make.exe all --jobs 4 --output-sync
Building file: .././main.c
Invoking: AVR/GNU C Compiler : 4.9.2
"C:\Program Files\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe" -x c -funsigned-char -funsigned-bitfields -DDEBUG -I"C:\Program Files\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.0.106\include" -I"C:\Users\Administrator\Desktop\led_2way_2.5\LED2.5\LED2.5" -O1 -fdata-sections -fpack-struct -fshort-enums -g2 -Wall -mmcu=atmega16a -B "C:\Program Files\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.0.106\gcc\dev\atmega16a" -c -std=gnu99 -MD -MP -MF "main.d" -MT"main.d" -MT"main.o" -o "main.o" ".././main.c"
Finished building: .././main.c
In file included from .././main.c:11:0:
c:\program files\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay.h(92,3): warning: #warning "F_CPU not defined for <util/delay.h>" [-Wcpp]
# warning "F_CPU not defined for <util/delay.h>"
^
c:/program files/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/4.9.2/../../../../avr/bin/ld.exe:--defsym:1: syntax error
collect2.exe(0,0): error: ld returned 1 exit status
make: *** [LED2.5.elf] Error 1
Building target: LED2.5.elf
Invoking: AVR/GNU Linker : 4.9.2
"C:\Program Files\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe" -o LED2.5.elf main.o -Wl,-Map="LED2.5.map" -Wl,--start-group -Wl,-lm -Wl,--end-group -Wl,--gc-sections -Wl,--defsym=__stack=boot=0xff -mmcu=atmega16a -B "C:\Program Files\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.0.106\gcc\dev\atmega16a"
C:\Users\Administrator\Desktop\led_2way_2.5\LED2.5\LED2.5\Debug\Makefile(108,1): error: recipe for target 'LED2.5.elf' failed
The command exited with code 2.
Done executing task "RunCompilerTask" -- FAILED.
Done building target "CoreBuild" in project "LED2.5.cproj" -- FAILED.
Done building project "LED2.5.cproj" -- FAILED.
Build FAILED.
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

编译后的提示信息。看的头大。

看不懂帮顶

问题我已经解决了。makefile设置那里有一个地方我按照教程填了boot=0xff，这里空着不填就可以编译了成功了。

我用studio6.0写过一个19kb的程序，或许几年前的经验能帮上你

需要重新写，把波形输出与时间周期的关系进行计算就行了，要定一些系数可能需要多做几次试验确定