Product Info

I tried blinking an LED with a ROHM microcontroller!

* "L chika" refers to the blinking of the LED.

A new FAE who has been with the company for a year and a half created the LED blinking program for ML62Q1577-TQFP100, which is described here, by purchasing a ROHM Starter Kit (model number: SK-BS01-D62Q1577TB) and using the integrated development environment LEXIDE-Ω (hereinafter referred to as LEXIDE-Ω) and code generation tool Code Generation Tools (hereinafter referred to as Code Generation Tools).

The microcontroller used (ML62Q1577-TQFP100) is a general-purpose 16-bit microcontroller.
The Starter Kit you purchase contains everything you need to run the reference board, so even beginners can get started easily with just this Starter Kit.

I hope that through this column you will understand that even people who have never used ROHM microcontrollers or development environments can easily operate them.

table of contents

Development Preparation

Chapter 1: Preparing your PC environment and tools

The environment and tools used this time are as follows.

Project Creation

Chapter 2: Starting a new project

This chapter explains how to start LEXIDE-Ω and create a new project.

1. From the Windows Start menu, select LAPIS LEXIDE Tools → LEXIDE-Ω and set up your workspace.
2. After launching LEXIDE-Ω, select “File” → “New” → “Project”.
3. In the New Project dialog, select “C Project”.
4. C In the Project dialog, enter the project name in “Project name” and
   In the Project type field, select “Executable (LAPIS)” → “Empty Project”
   Select “U8/U16 LLVM Toolchain(LAPIS OMF)” from the Toolchains section.
5. Select “NEXT” in the Select Configurations dialog.
6. In the Select U8/U16 Device dialog, select the following:
   Category: ML62Q1000
   Group: ML62Q1500
   After selecting LSI: ML621577, select "Finish".
7. Finally, delete the startup file (in this case, ML621577.ASM) from the created project.

Now you are ready to perform the initial setup of the Code Generation Tools.

Chapter 3 Initial setup with Code Generation Tools

In this chapter, we will use the Code Generation Tools to perform initial settings and peripheral function settings.

1. From the Windows Start menu, select LAPIS Code Generation Tools →
   Select and launch the ML62Q1000 startup setting tool.
2. Once launched, select "New Project" and select ML62Q1577 256K 100 TQFP100.
3. You will be taken to a screen to save the project file, so enter the project file name and
   Save it under the project folder created in Chapter 2.
4. This time, do not make any changes and select "Generate source files" to generate source files.
   Now that the initial settings are complete, the next step is to configure the peripheral functions.
5. From the Windows Start menu, select LAPIS Code Generation Tools →
   Select the ML62Q1000 peripheral setting tool and launch it.
6. Once launched, select "New Project" as before and select ML62Q1577 256K 100 TQFP100.
7. You will be taken to a screen to save the project file, so enter the project file name and
   Save it under the project folder created in Chapter 2.
8. Configure the settings as shown below, select "Generate source files" and generate source files.

   

   

The initial setup of the Code Generation Tools is now complete.

Chapter 4 Writing source code with LEXIDE-Ω

This chapter explains how to start LEXIDE-Ω and write source code.

1. Open the project file you created, “lcgu_src” → “lcgu_main.c”.
2. Write “timer0_start()” under “s_initUser()”.
3. Open “lcgu_src” → “lcgu_timer0.c”.
4. Write "P20DO = ~P20DO" under "void lcgu_procTimer0Int(void)".

   

   

Now that we have written the source code, we will build it in the next chapter.

Chapter 5 Building the project you created

This chapter explains the steps to build a project created with LEXIDE-Ω.

1. From the LEXIDE-Ω menu, select “Project” → “Properties”.
2. Select “C/C++Build” → “Settings” → “Compiler” → “Includes”.
3. Click the “Add directory path” icon and then select “Workspace”.
4. Select a folder in the Folder selection dialog and click "OK".
   This time, "driver" →"inc" folder, "lcg_src" folder, and "lcgu_src" folderSelect multiple items.
5. Select “Apply and Close”.
6. From the LEXIDE-Ω menu, select “Project” → “Build Project” to build the project you created.

You have now built the project you created.

Debugging

Chapter 6 Debugging the created project

This chapter explains the procedure for debugging a project built with LEXIDE-Ω.

1. Connect the reference board, emulator, and PC.
2. Select "Debug" from the toolbar (① below), select the target to debug (② below), and click the Debug button Click (③ below).
   

   

3. The Confirm Perspective Switch dialog will appear, so click “Switch” to move to the debug screen.
4. Once you are on the debug screen, click the Resume button on the toolbar. Click
   The program you created will be executed and the LED on the reference board will flash.

You have now built the project you created.