EFM32 Giant Gecko STK

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Kelly Painter

• October 14, 2016 17:58

I have a CTL project that blinks the LEDs from two tasks on the EFM32 Giant Gecko starter kit.  It runs great from the onboard J-Link.  When I change the configuration to THUMB Flash Release (or at least I think I changed it to Flash) and I set the placement to flash, it downloads instantly.  Too fast to have actually programmed the flash.  i.e. programming completed in 197ms.  Of course, the device doesn't boot.  It seems that it is downloading to ram.

I have a similar example running on Simplicity Studio and when it downloads to flash, it takes significantly longer and does boot.

What could I be doing wrong? 

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  Kelly Painter

  • October 15, 2016 00:44

  Answering my own question.  I had two problems detailed here:

  https://rowley.zendesk.com/hc/en-us/articles/210032923-Application-not-starting-up-from-reset

  I did not have START_FROM_RESET defined and I had debug_printf() calls.  Booting fine now.

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