RX71m SCI boot

Hello,

You can use as reference the application note below, that implements a SCI bootloader on RX140:

Ιt uses Xmodem protocol to transfer the image from the user's PC folder location to the internal flash of the RX.

https://www.renesas.com/en/document/apn/renesas-starter-kit-rx140-boot-loader-application-note

Also, on the link below, you can find the projectd for the bootloader and for the application on CS+:

https://www.renesas.com/en/document/scd/rx140-renesas-starter-kit-sample-code-cs-cc-rx?r=1618031

Τhe same idea can be implemented on RX71M.

Regards,

AL_Renesas

Hello,

You can use as reference the application note below, that implements a SCI bootloader on RX140:

Ιt uses Xmodem protocol to transfer the image from the user's PC folder location to the internal flash of the RX.

https://www.renesas.com/en/document/apn/renesas-starter-kit-rx140-boot-loader-application-note

Also, on the link below, you can find the projectd for the bootloader and for the application on CS+:

https://www.renesas.com/en/document/scd/rx140-renesas-starter-kit-sample-code-cs-cc-rx?r=1618031

Τhe same idea can be implemented on RX71M.

Regards,

AL_Renesas

Hi AL_Renesas San,

Thanks for the replay,

Actually, i was expected the replay Which is given By JimBsan

But The response given by you is more interested can you please check & confirm details..

please confirm i will explain what i understand,

1. First we have to define Boot loader Program with condition of checking input from user for updating firmware or not .

2. load the boot loader program on the MCU using Debugger (E2 lite,E1 etc).

3.  Restart the MCU Generate the condition of erasing application Code & update previous code with new One.

Now the my question is that 

Is we need to use any dedicated port for SCI  

Please confirm......

Hello,

JimB's solution is related with a specific mode offered by RX device and it has to do how to flash the chip without using any dedicated flash interface (SWD/JTAG), but you have a direct SCI or USB communication using a specific SCI channel.

My suggestion is related with customized boot loader program that you load on the chip directly ( by flashing the hex file) using any flash programmer with any emulator/debugger and after that, you can use any SCI channel through Xmodem to update any time the app's firmware on specific flash code section.

Below find the flowchart of the whole idea  after flashing the boot loader image on the chip:

How the internal memory is organized:

Regards,

AL_Renesas