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Discussion Title Created date
how to link Exception Vector Table into ram?
hi, I try to link the Exception Vector Table in to SRAM. I do it by link file. the _evba has been linked to 0x00002000, but program fail to run. anything missing?
Wednesday, 25 February 2009 - 07:22
read-after-write errata workaround
Atmel has a workaround of writing a page will cause page read error. Atmel also release a link control file for uc3a0512, does anyone know this errata is also applied to other...
Tuesday, 24 February 2009 - 08:43
flashc_memcpy impact DMA and SSC
when implement the bootloader, I find the flashc_memcpy funtion will impact the DMA and SSC. it is understandable that flash cannot be accessed when programming. So I put the...
Tuesday, 24 February 2009 - 06:20
mask reset pin RESET_N of uc3b
May I know if pin of UC3b0256 RESET_N can be masked? The pin 63(RESET_N) is used for extenal reset. it is possible of mask it in reset controller? From data sheet seems cannot,...
Tuesday, 24 February 2009 - 05:17
put code into ram?
Hi all, I just try to put the runable code into ram, the reason is dma interrupt will be impacted by flash write operation. so I do like below: char codebuffer[0x160];//code...
Thursday, 19 February 2009 - 09:50
code encryption ?
anybody has experience on protect the code by encrytion? that is to say, bind the firmware with the hardware. a solution is write a unique key in data flash when download firmware...
Wednesday, 4 February 2009 - 02:06
Any method let program run from any offset?
Any method let program run from any offset? I am using uc3b0256, CPU run from 0x80000000, now I want download(using bootloader) a bin format program to address 0x80020000(not...
Wednesday, 21 January 2009 - 06:10
bin format file download?
if I download(using own bootloader) the binary file (.bin) into flash address such as 0x80004000,other than 0x80002000, and set pc to 0x80004000, it is Ok to run?
Monday, 19 January 2009 - 05:22
own bootloader
we want download firmware using bootloader of ourself. May I know below solution workable? 1:define a section and link to the end of flash memory #if __GNUC__ __attribute__((...
Monday, 19 January 2009 - 03:40
C++ link error
Hi all, to reduce code size, we don't use the standard C lib, but we do use C++ in our code. when linking, avr 32 studio report errors like below: seems we need link some C++...
Friday, 9 January 2009 - 04:02
code size reducation?
Iface problem that code size is too big, and find the stadard lib take 1/3 code size. we never use routine such as printf/malloc, how to prevent these building in? Or any other...
Wednesday, 7 January 2009 - 03:11