How can I immediately start the user application written in the microcontroller?

kyohei — Thu, 13 Jan 2022 08:32:10 GMT

Is there a way to start the user application written in the microcomputer immediately after turning on the power?
The MCU and Flash Tool I am using are as follows.

MCU : MKL43Z256VLH4
FlashTool : KinetisFlashTool

Also, I have already tried the following, but I haven't been able to start it immediately.

Start Kinetis Flash Tool
→ Select "BCA Utilities"
→ Select "Config"
→ Check "Tag", "Enable Direct Boot"
→ Select "OK"
→ Select "Save"
→ Update the firmware using Kinetis Flash Tool

Re: How can I immediately start the user application written in the microcontroller?

jingpan — Mon, 17 Jan 2022 07:32:48 GMT

Hi @kyohei ,

After downloading, KinetisFlashTool will reset target. And the MCU will read FOPT and then, if execute ROM bootloader, it will read BCA. So, you can

1. disable ROM bootloader by FOPT[BOOTSRC_SEL], or

2. If you want to keep ROM bootloader, you can set a short timeout in BCA, or

3. If you need a long timeout period, you have to use blhost.exe instead of KinetisFlashTool. Please refer to Table 13-2 in reference manual. ROM bootloader support 'Execute' command which can run user application code. But KinetisFlashTools doesn't support it. You can use blhost to download and execute.

Regards,

Jing

Kinetis MicrocontrollersのトピックHow can I immediately start the user application written in the microcontroller?

How can I immediately start the user application written in the microcontroller?

Re: How can I immediately start the user application written in the microcontroller?