Revert "テストコードからシグナルを削除"

This reverts commit 8889e75bd08e4fcddbf6cfa09d0afe4485da2c23.
Merge branch 'master' of https://github.com/Siromitu26/LEDBoard
SJIS環境で成功
Merge branch 'master' of https://github.com/Siromitu26/LEDBoard

Conflicts:
	TestCode/kanjifont_show_sjis.c