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04/12/10 00:18
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#174983 - Loading Flash EEPROM with defaults
Hi all

I have set aside some flash for use as an eeprom, it is working well I can read and write to the flash no problems.

I would like to assign to the flash some default values which I know at compile time, but may be overwritten by the user when the product is deployed.


Here is what I want to achieve.
volatile unsigned char code dataflash[DATAFLASHSIZE] _at_ DATAFLASHSTART = {0x01, 0x02, 0x03};


Where in the case above I am writing 3 bytes to my dataflash array, the DATAFLASHSIZE = 512bytes so Iam not filling the entire array just the first 20 or so bytes.

Why doesn't the above work????
How else can I achieve this??

Thanks and Regards

Marshall Brown

List of 15 messages in thread
TopicAuthorDate
Loading Flash EEPROM with defaults            01/01/70 00:00      
   this seems to work - any improvements            01/01/70 00:00      
      Always a key requirement!            01/01/70 00:00      
         toolchain dependent            01/01/70 00:00      
   A couple of points            01/01/70 00:00      
      volatile            01/01/70 00:00      
         separate source            01/01/70 00:00      
         So subtle            01/01/70 00:00      
      Excel is (also) among your friends            01/01/70 00:00      
         Yes missing initialisers do default to 0            01/01/70 00:00      
   My Method...            01/01/70 00:00      
   an alternate suggestion (which I use)            01/01/70 00:00      
      That uses more memory            01/01/70 00:00      
         Oliver ???            01/01/70 00:00      
         I believe that is what most devices do..            01/01/70 00:00      

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