S12 / MagniV MicrocontrollersのトピックHelp with AN 2720

Help with AN 2720

tim_milliken — Thu, 04 May 2006 20:43:25 GMT

I am trying to use the AN2720 as a flash bootloader to reprog. the HC12 in the feild. I understand all of the code fine, but what I am unclear about is a few things. 1 the flash.h file is left out of the An2720SW.zip but I was able to snip it from the pdf file. 2 There is a struct missing somewhere that I am not sure how to construct it. The following code snipit uses that struct

Flash.fclkdiv.byte = Flash.fclkdiv.byte | fclk_val;

That is cut straighe from the flash.c file. So where is that struc defined at?

I am using the MC9s12DJ64. I have looked at other methods of erasing ans reprogramming the flash but this seems to be the most straight foward if I can figure out that struct. Thanks for any help.

Tim

Re: Help with AN 2720

DrSeuss — Fri, 12 May 2006 05:16:09 GMT

The definition below is an old stationary. Attached is a new version using "standard" CodeWarrior defines.

http://www.freescale.com/webapp/sps/download/license.jsp?colCode=AN2720_SW

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Message Edited by t.dowe on 2009-09-11 03:32 PM

Re: Help with AN 2720

tim_milliken — Mon, 15 May 2006 03:59:51 GMT

I had already gave up on getting help, I did not have it working yet, that is till today when I seen your reply. Thanks it worked flawless, you was alot of help. Thnaks Tim

Message Edited by tim_milliken on 05-14-200604:01 PM

Re: Help with AN 2720

tim_milliken — Sun, 21 May 2006 19:04:10 GMT

Well I guess I posted a little too early. After getting it all coded and tested, it works great till I switch to the D page. When I try to erase even the first sector in the D page it will erase the first sector in the C page. I have tried all that I know to make it work, even loading the PPAGE with 0x0D right before I go into the flash_erase_sector and still not working. Any more ideas? Thanks Tim