Bootloader

Jeroen.Vandezande

Subject:

Bootloader

· Posted: 07.02.2014 - 13:13 · #1

Hi,

I want to implement a classic bootloader in AVRCo.
Suppose I will use the UART for comunications with the outside world that will upload the .hex file from a PC
So I want to upgrade the entire application not some parts of it.
I was wondering what i need to do with the FlashInitPage procedure.
You need to give it an address of a page and the value passed needs to be a constant not a variable.
But I want to flash all pages, So can I use this procedure in a loop?

I would like a bit more info on how to upgrade the entire flash memory from within the bootloader.

Thank you.

Jeroen Vandezande

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Subject:

Re: Bootloader

· Posted: 07.02.2014 - 13:41 · #2

Hello Jeroen,

yes, must erase each page step by step.

rolf

Jeroen.Vandezande

Subject:

Re: Bootloader

· Posted: 07.02.2014 - 14:01 · #3

Hi Rolf,

How do you switch to the next page?
The functions FlashWritePage, FlashErasePage, FlashProgPage all work on a specific flash page, so when I am done with one, how do I select the next flash page?

Mario

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Subject:

Re: Bootloader

· Posted: 07.02.2014 - 14:04 · #4

Hi,
I think if you want to implement a classic bootloader it's better to use the FlashDownload Monitor. It's described in the AVR Standard Driver manual at 3.50.5.3. .
So you only have to implement the procedures FlashLoaderInit, FlashLoaderRecv, FlashLoaderTransm and (optional) FlashLoaderExit.
See the example in .\E-Lab\AVRco\Demos\SelfProg.

Best regards
Mario

Jeroen.Vandezande

Subject:

Re: Bootloader

· Posted: 07.02.2014 - 14:06 · #5

Hi Mario,

Thank you very much!!!!
Somehow I missed that part of the manual, my bad...
That is exactly what I was looking for.

Best Regards,

Jeroen

Bootloader

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