2018-07-31 09:34:23 +02:00
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# DualOptiboot
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2018-07-31 09:45:00 +02:00
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Zavaděč pro Arduino IDE a desky xPablo.cz
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Based on:
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Custom Optiboot to add wireless programming capability to Moteino
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Copyright Felix Rusu (2013-2014), felix@lowpowerlab.com
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More at: http://lowpowerlab.com/Moteino
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This Optiboot version is modified to add the capability of reflashing
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from an external SPI flash memory chip. As configured this will work
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with Moteino (www.lowpowerlab.com/Moteino) provided a SPI flash chip
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is present on the dedicated onboard footprint.
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Summary of how this Optiboot version works:
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- it looks for an external flash chip
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- if one is found (SPI returns valid data) it will further look
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for a new sketch flash image signature and size
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starting at address 0: FLXIMG:9999:XXXXXXXXXXX
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where: - 'FLXIMG' is fixed signature indicating FLASH chip
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contains a valid new flash image to be burned
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- '9999' are 4 size bytes indicating how long the
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new flash image is (how many bytes to read)
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- 'XXXXXX' are the de-hexified bytes of the flash
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pages to be burned
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- ':' colons have fixed positions (delimiters)
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- if no valid signature/size are found, it will skip and
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function as it normally would (listen to STK500 protocol on serial port)
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The added code will result in a compiled size of just under 1kb
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(Originally Optiboot takes just under 0.5kb)
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-------------------------------------------------------------------------------------------------------------
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2018-08-02 08:36:53 +02:00
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Postup kompilace (Windows only :-( ):
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1. z adresáře tools nainstalovat WinAVR
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2. spustit dávku makeRFS.cmd - výsledkem by měl být soubor optiboot_atmega328_pro_8MHz.hex , který je možné vypálit do CPU
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