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@zhb(zhen haibo)

📚 VSCode(RL78G14)開発環境の構築　LM1_1_Code

Last updated at Posted at 2025-06-18

QQQ :bow_tone1:3Q!

🧑‍🏫 組み込み開発_RL78G14篇 LC1　:arrow_heading_up:

VSCode試し理由

  • Cursorはe2Studio IDEより軽い
  • AIプラグインよりコーディング効率化

ソースコードの自動生成およびシミュレーターの設計は、e² Studio IDEに任せます。

環境準備

  • e2 Studio + LLVM for RL78 环境

    • 编译 & デバッグ环境
      C:\ProgramData\LLVM for Renesas RL78 17.0.1.202406\bin
    • GNU make環境
      C:\Renesas\e2_studio\eclipse\plugins\com.renesas.ide.exttools.gnumake.win32.x86_64_4.3.0.v20220121-1024\mk

  • VSCode + Renesasプラグイン
    image.png

  • CMakeダウンロード
    Portable、インストール不要
    https://cmake.org/download/
    Binary distributions:
    | Windows x64 ZIP | cmake-4.0.2-windows-x86_64.zip |

  • Ninja ダウンロード
    Portable、インストール不要
    https://github.com/ninja-build/ninja/releases
    ninja-win.zip 269 KBMay 11, 2024

  • CMake & Ninjaの置き場
    　C:\cmake\bin
    image.png

  • システムパスへ追加
    image.png

CS+ IDEでの CC_RL または CA_CX コンパイラ環境は使用できません！

e² studioプロジェクトを構築

省略、下記リンクをご参照ください。
LED点消灯を10分で制御させる　:arrow_right:

VSCodeプロジェクトの変換／作成

  • 「Ctrl+Shift+P」より「Create LLVM for RL78 project files」メニューを選択
    image.png
  • 二つファイル（CMakeLists.txtとcross.cmake）を生成
    image.png

不要な .c や .s ファイルを削除

（旧プロジェクトのエントリポイントである main 関数付きの廃棄ファイルも含む）
image.png

CMakeLists.txt を編集

Makefile群を生成するため

  • プロジェクト名を記入（例：QQQ）
    image.png
  • 起動アセンブラファイル（start.S）箇所変更伴い、パス変更対応（📁名変更：generate -> src）
    image.png

クロスコンパイル設定

cross.cmakeを編集
image.png

Debug環境を構築

launch.json の生成と編集

  • ✅simulator（シミュレーター環境でのデバッグ）
  • hardware （Lite版ハードウェア回路でのデバッグ）
    image.png

{651D708B-793C-4B62-812B-F204582A2274}.png
image.png
image.png

{
	// IntelliSense を使用して利用可能な属性を学べます。
	// 既存の属性の説明をホバーして表示します。
	// 詳細情報は次を確認してください: https://go.microsoft.com/fwlink/?linkid=830387
	//e2-server-gdb -g 
	//SIMULATOR -usecurityIdSize 10 
	//-t R5F104PL -uConnectionTimeout= 30 
	//-umFreq= 2.00 -usFreq= 32.768 
	//-uresetOnReload= 1 
	//-udisplaySimGUI= 1 
	// -uSimulatorSetting= C:\git\vscode\LLVM\QQQ/QQQ Simulator Debug.simpj 
	// -uRelayBreak= 0 -l 
	// -uCore= SINGLE_CORE|enabled|1|main 
	// -uSyncMode= async 
	// -uFirstGDB= main 
	// --gdbVersion= 12.1
	"version": "0.2.0",
	"configurations": [
		// Renesas GDB Simulator configuration
		// This configuration is used for debugging with the Renesas GDB simulator.
		{
			"type": "renesas-simulator",
			"request": "launch",
			"name": "Renesas GDB Simulator Debugging",
			"target": {
				"deviceFamily": "RL78",
				"device": "R5F104PL",
				"debuggerType": "SIMULATOR",
				"serverParameters": [
					"-usecurityIdSize",
					"10",
					"-t",
					"R5F104PL",
					"-uConnectionTimeout",
					"30",
					"-umFreq",
					"2.00",
					"-usFreq",
					"32.768",
					"-uresetOnReload",
					"1",
					"-udisplaySimGUI",
					"1",
					"-uSimulatorSetting",
					"${workspaceFolder}/QQQ Debug.simpj",
					"-uRelayBreak",
					"0",
					"-l",
					"-uCore",
					"SINGLE_CORE|enabled|1|main",
					"-uSyncMode",
					"async",
					"-uFirstGDB",
					"main"
				],
			}
		},
		// Renesas E2Lite emulator configuration
		// This configuration is used for debugging with the Renesas E2Lite emulator.
		{
			"type": "renesas-hardware",
			"request": "launch",
			"name": "RL78G14 E2Lite emulator",
			"target": {
				"deviceFamily": "RL78",
				"device": "R5F104PL",
				"debuggerType": "E2LITE",
				"serverParameters": [
					"-t",
					"R5F104PL",
					"-uConnectionTimeout=",
					"30",
					"-umFreq=",
					"0",
					"-usFreq=",
					"0",
					"-umClock=",
					"1",
					"-w",
					"0",
					"-usupplyVoltage=",
					"0",
					"-ucommMethod=",
					"0",
					"-usecurityID=",
					"00000000000000000000",
					"-usecurityIdSize",
					"10",
					"-upermitFlash=",
					"1",
					"-uuseWideVoltageMode=",
					"0",
					"-ueraseRom=",
					"1",
					"-uresetOnReload=",
					"1",
					"-ustopTimerEmu=",
					"0",
					"-ustopSerialEmu=",
					"0",
					"-umaskInternalResetSignal=",
					"0",
					"-umaskTargetResetSignal=",
					"0",
					"-n",
					"0",
					"-uverifyOnWritingMemory=",
					"1",
					"-uAllowRRMDMM=",
					"0",
					"-uRelayBreak=",
					"0",
					"-l",
					"-uCore=SINGLE_CORE|enabled|1|main",
					"-uSyncMode=",
					"async",
					"-uFirstGDB=",
					"main",
					"--gdbVersion=",
					"12.1"
				],
				"gdbPath": "C:\\Renesas\\e2studio\\2023-10\\RLSimGDB\\bin\\rl78g14_e2lite_gdb.exe",
			]
		}
	}
]
}

↑↑↑↑↑　「"${workspaceFolder}/QQQ Debug.simpj",」行にプロジェクト名を更新するべき。例：PROJECT_XXX Debug.simpj
これはe2Studio IDE環境より自動生成したシミュレーター用ファイルです。

CMake操作の実行

（CMake: キャッシュを削除して再構成）
{8EC925C9-1056-4FAB-949D-91165794FE23}.png

[main] プロジェクトを構成しています: QQQ 
[proc] コマンドを実行しています: C:\cmake\bin\cmake.EXE -DCMAKE_BUILD_TYPE:STRING=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE "-DCMAKE_C_COMPILER:FILEPATH=C:\ProgramData\LLVM for Renesas RL78 17.0.1.202406\bin\clang.exe" "-DCMAKE_CXX_COMPILER:FILEPATH=C:\ProgramData\LLVM for Renesas RL78 17.0.1.202406\bin\clang++.exe" -DCMAKE_TOOLCHAIN_FILE=c:/QQQ/QQQ/cross.cmake --no-warn-unused-cli -SC:/QQQ/QQQ -Bc:/QQQ/QQQ/build -G Ninja
[cmake] Not searching for unused variables given on the command line.
[cmake] -- The C compiler identification is Clang 17.0.1
[cmake] -- The CXX compiler identification is Clang 17.0.1
[cmake] -- Detecting C compiler ABI info
[cmake] -- Detecting C compiler ABI info - done
[cmake] -- Check for working C compiler: C:/ProgramData/LLVM for Renesas RL78 17.0.1.202406/bin/clang.exe - skipped
[cmake] -- Detecting C compile features
[cmake] -- Detecting C compile features - done
[cmake] -- Detecting CXX compiler ABI info
[cmake] -- Detecting CXX compiler ABI info - done
[cmake] -- Check for working CXX compiler: C:/ProgramData/LLVM for Renesas RL78 17.0.1.202406/bin/clang.exe - skipped
[cmake] -- Detecting CXX compile features
[cmake] -- Detecting CXX compile features - done
[cmake] -- The ASM compiler identification is Clang with GNU-like command-line
[cmake] -- Found assembler: C:/ProgramData/LLVM for Renesas RL78 17.0.1.202406/bin/clang.exe
[cmake] CMake Warning (dev) at CMakeLists.txt:22 (add_custom_command):
[cmake]   Exactly one of PRE_BUILD, PRE_LINK, or POST_BUILD must be given.  Assuming
[cmake]   POST_BUILD to preserve backward compatibility.
[cmake] 
[cmake]   Policy CMP0175 is not set: add_custom_command() rejects invalid arguments.
[cmake]   Run "cmake --help-policy CMP0175" for policy details.  Use the cmake_policy
[cmake]   command to set the policy and suppress this warning.
[cmake] This warning is for project developers.  Use -Wno-dev to suppress it.
[cmake] 
[cmake] -- Configuring done (5.0s)
[cmake] -- Generating done (0.2s)
[cmake] -- Build files have been written to: C:/QQQ/QQQ/build

ビルド開始

コンパイル／リンクを実行し、.elf／.bin ファイルを生成
image.png

デバッグ ＆ 実行

  • 実行ボタン「Renesas GDB Simulator Debugging」を押してデバッグ開始
    {DDA1C964-3022-4C19-B3E3-BF2D760D2569}.png
    image.png

コード生成後は、必ず再度 CMake 操作（キャッシュ削除 → 再構成）を行ってください。

残留課題：
・ 変な浮動演算　※ 原因不明、しかし、e2Studio環境で算出ＯＫ！
　　例：uint32_t ulSetParam = (uint32_t) (19999 + 1) * (uint32_t) duty / 100 - 1;　→最終ulDuty → 超大きいな値

image.png

:interrobang:なぜ、同じClangコンパイラなのに違いが出るのでしょうか？
image.png

🧑‍🏫 組み込み開発_RL78G14篇 LC1　:arrow_heading_up:
QQQ :bow_tone1:3Q!
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