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  • Author Author: Jan Cumps
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Renesas Solution Starter Kit for RX23E-A: build and run the Thermocouple application

Jan Cumps

The thermocouple appnote for Road test: Renesas Solution Starter Kit for RX23E-A comes with example firmware. In combination with the stater kit PC Tool, you get a temperature display. The firmware source is available as an e² studio project, but there's no ready-to-load binary. In this post I show how to build it. If you're not into source code: I'll attach the binary in a format that can be loaded on the board with Renesas' Flash Programmer.

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What do you need:

Load and build the example in e² studio (optional)

Start e² studio, and select Import Sample Project from the Welcome Page. Select Online -> RX. Select the device:
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Select the Thermocouple project and import it
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Right-click on the imported project, and select Properties. Navigate to C/C++ Build -> Settings -> Toolchain. Select the Renesas CCRX chain.
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By default, the project build binaries for a debugger. To load it on to our starter kit with Flash Programmer, we need to generate a .mod file. Switch to the Tool Settings tab, and navigate to Converter -> Output. Select Motorola S format file
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Apply and Close. Build (your 60 days evaluation time starts ticking now)

Load the firmware to the board

Disconnect your board. Change JP17 from Emulator to USB. Plug your board back in. 

Run Renesas Flash Programmer, and start a new project. Select RX200, give your project a name, and select COM port. Then click on Tool Details and select the COM of your board. Now browse to the .mod file that was generated during the build. You'll find it in the HardwareDebug/ subfolder of your e² studio project. Alternative, download the one I attached to this blog. Press Start and the firmware gets loaded.
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When done, unplug the board, and move JP17 back to Emulator.

Run  the application

Set the jumpers as indicated in the appnote
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Start PC Tool and Connect. You will notice that the 1st 4 tabs are disabled. But the Application tab now works. It shows the temperature in a graph.
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Restore the original firmware

You can use Flash Programmer to restore the original firmware. Follow the same steps, but take the rx23ea_rssk_fw.mot that comes with the PC Tool. It sits in the same directory as the .exe

rx23ea_thermocouple.mot.zip

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  • Very interesting! The e2studio is also used for Renesas RA microcontrollers too, so it's good to see that the experience using it is transferrable.

    That Flash Programmer looks neat, it could be useful for in-the-field upgrades. Is that using the bootloader inside the RX chip, or is it some other chip on the development board?

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  • Very interesting! The e2studio is also used for Renesas RA microcontrollers too, so it's good to see that the experience using it is transferrable.

    That Flash Programmer looks neat, it could be useful for in-the-field upgrades. Is that using the bootloader inside the RX chip, or is it some other chip on the development board?

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