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STM32CubeIDEを使ってみよう How To STM32CubeIDE 日本語版 Optimization Levelを変更して最適化する

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STM32CubeIDEで以下のようなエラーが出た人はいないでしょうか?

c:\st\stm32cubeide_1.3.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.7-2018-q2-update.win32_1.4.0.202007081208\tools\arm-none-eabi\bin\ld.exe: region `FLASH' overflowed by 944 bytes
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:54: STM32F042-1.elf] Error 1
"make -j4 all" terminated with exit code 2. Build might be incomplete.

11:53:58 Build Failed. 3 errors, 1 warnings. (took 10s.509ms)

Keyboard-1-1.jpg
フラッシュにファイルが入らないというエラーになります。
最適化して入るようにしてみましょう。(すべてではありません)

右クリック⇒Properties

image.png

C/C++ Build⇒Tool Settings⇒MCU GCC Compoler⇒Optimization
image.png

Optimization levelを変更する

arm-none-eabi-objdump -h -S  STM32F042-1.elf  > "STM32F042-1.list"
arm-none-eabi-objcopy  -O binary  STM32F042-1.elf  "STM32F042-1.bin"
arm-none-eabi-size   STM32F042-1.elf 
   text    data     bss     dec     hex filename
  17928     364    3780   22072    5638 STM32F042-1.elf
Finished building: default.size.stdout

Finished building: STM32F042-1.bin

Finished building: STM32F042-1.list


11:58:13 Build Finished. 0 errors, 1 warnings. (took 9s.209ms)

以上でコンパイルが通るようになります。

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