Kinetis Microcontrollers中的主题 Re: Blhost utility flashing time

Blhost utility flashing time

farzansaleem — Thu, 02 Aug 2018 10:25:31 GMT

I am using BLHOST utility to flash firmware via bootloader.Minimum flashing time i am getting is about 48sec at maximum baud rate of 256000.Is this normal flashing time? Is there any way to reduce flashing time?

Actually we are planning to use this method for production of our devices.We are planning to flash about 10k units but with that flashing time it is not feasible for us to use this bootlaoder or this type of interface do you have any recommendations.

Following are the specs of my system

Controller:NXP KL43Z

Interface:UART

OS:Linux

Thanks

Re: Blhost utility flashing time

kerryzhou — Fri, 03 Aug 2018 09:39:49 GMT

Hi Farzan,

The download time relate to the download speed, but also depend on the code size you want to download.

As you know, the UART have speed limit, if you want to quick, I think you also can use the debugger or the programmer to download it.

Eg, you can use the JLINK, and JFLASH download it directly through the SWD interface.

Wish it helps you!

If you still have question about it, please kindly let me know.

Have a great day,
Kerry

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Re: Blhost utility flashing time

bobpaddock — Fri, 03 Aug 2018 12:04:40 GMT

With quantities of 10k, have you considered having your vendor program the chips for you before delivery?
Distributors such as Arrow offer that as a value-added-service.

JTAG will be faster.

At some point the limit is the Flash Write speed and going faster than that has no gain in programming time.

Re: Blhost utility flashing time

kerryzhou — Mon, 06 Aug 2018 02:02:28 GMT

KL43 just support SWD, it can't support the JTAG, but SWD will be faster than the UART bootloader.

Have a great day,
Kerry