J-Link cannot connect to the CPU

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Revision as of 13:22, 13 August 2015 by Roman (talk | contribs)
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Issue: After downloading an application, J-Link is not able to connect to the CPU

This can have different reasons:

  • Application disables the debug interface
  • Application reconfigures debug pins
  • Application enters some kind of low power mode
  • etc....

Preventing connection errors:

  • Delay of 1 second at the start of a debug session, so in any case J-Link can halt the CPU before executing the "bad code"