Boot loader Append/Bootend size selection logic (Attiny1614/Xtiny)

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vertamps
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Posted by vertamps: Thu. May 24, 2018 - 06:16 PM
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How i am reading the Attiny1614 datasheet:

 

If i set APPEND to '0x10' (16 x 256 bytes) = 4kb of Application code.

If i set BOOTEND to '0x01' (1 x 256 bytes) = 256 bytes of boot loader space (That im not going to use anyways).

This leaves me with 12kb-256bytes of app data space.

 

If i set APPEND to 0x00 and BOOTEND to 0x01 then i have almost all of 16kb of flash for code storage.

 

What is the difference between *Application code in flash and *App data and what should i be concerned about?

 

 

~William

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AVR Microcontrollers, megaAVR and tinyAVR
Last Edited: Thu. May 24, 2018 - 06:17 PM
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kabasan
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Posted by kabasan: Thu. May 24, 2018 - 11:57 PM
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The difference is whether it is affected by lockbit or not.

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vertamps
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Posted by vertamps: Wed. May 30, 2018 - 06:28 AM
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kabasan wrote:
The difference is whether it is affected by lockbit or not.

In reading the XMEGA-A manual (pg. 20) it mentions : Application Table Section which talks about lock bits.

Along with your comment i am assuming *AppData is the same as the *Application Table Section. 

~William

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