Month: February 2014

Memo about AVR Dragon basics. What can be done with AVR Dragon: Run the program in the target device in debug mode. Stop at break points. Do step execution. Examine processor internals, such as memory and registers (capable only in stop mode). Program the target device. Tips The doc provided by Atmel worked best for me for "getting started" document. http://www.atmel.no/webdoc/avrdragon/index.html There are several ways to connect Dragon to the target device for debugging.  However, only debugWire is available for ATTiny* chips. debugWire commonly utilizes 6-pin header for ISP (In Circuit Programming). Dragon can be used both as OCD (On Chip Debugging) and ISP devices.  However, these modes cannot be…

AVR Dragon provides on-chip debugging feature through debugWire interface.  The debugWire utilizes the ISP six-pin header to control the target device as shown in the following link:

http://www.atmel.no/webdoc/avrdragon/avrdragon.section.zrr_osd_lc.html

However, the target application does not work correctly with SPI feature during debug run.