If you are experiencing issues with establishing debug session, follow the
below tips:
Possible solutions
Power-cycle your device and try to perform a reset
This way you will pinpoint the issue either with:
- Establishing debug session (if reset fails as well) or
- Flash programming (if reset works, but download fails)
Wrong BlueBox selected
Open Hardware / Debugger Hardware / Hardware Type and select your
BlueBox.
Wrong Debug Adapter used
Check if you are using the correct Debug Adapter for your Target.
Wrong Debug Adapter orientation
Make sure that pin 1 of the Debug Adapter is aligned with pin 1 on the Target.
Debugger connected to a wrong target connector
Check if the debugger is connected to the correct target debug
connector. Multiple target connectors can have the same physical
appearance and size but have different functionality.
Wrong CPU selected
Check:
-
Debug / Configure session / SoCs if the correct Device is selected or
- Create a New Workspace via File / Workspace / New Workspace
Verify Reset settings
Change the Reset method from Regular to Stop
Verify Debug clock
Adjust (lower) the JTAG Scan speed via
Hardware / CPU Options / JTAG.
Target is not powered
- Turn on the target
-
Check with the volt-meter for confirmation (particularly on targets without
visual indication of power supply presence) if the power supply is really
applied to the microcontroller.
Target is supplied with an incorrect voltage or is not stable
-
Check the target reference manual and/or schematics for power supply
specifications.
-
Make sure that the power supply is applied to the target JTAG connector
-
Configure correct debug interface voltage levels (Vref) via
Hardware / CPU Options / Hardware.
- NXP/ST Power Architecture: Check debug voltage levels and instead of Vref specify fixed voltage in Hardware / CPU Options / Hardware. Error JTAGC ID: 0xFFFFFFFF OnCE ID: 0xFFFFFFFF BYPASS: 0x7FFFFFFF means that there is no response from the chip)
Device may be locked
Make sure you are using SFR database that matches the winIDEA version you are running.
Debug Adapter / BlueBox is damaged
Inspect the cable for any physical damage. If possible, check the connections
with the ohm-meter. If it is damaged, contact
iSYSTEM Technical support for a replacement.