My J-Link EDU is unable to connect with my target processor (an ATSAME54P20). Here's what J-Link Commander reports upon startup:
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The suspicious part is "VTref=0.000V". But when I measure the voltage on pin 1 of the 20 pin JTAG connector, I see 3.3V. Does this indicate a faulty J-Link? Or are there other things that could cause this?
Source Code
- SEGGER J-Link Commander V6.41a (Compiled Nov 27 2018 14:10:26)
- DLL version V6.41a, compiled Nov 27 2018 14:09:51
- Connecting to J-Link via USB...O.K.
- Firmware: J-Link V9 compiled Oct 25 2018 11:46:07
- Hardware version: V9.40
- S/N: 269402808
- License(s): FlashBP, GDB
- OEM: SEGGER-EDU
- VTref=0.000V
- Type "connect" to establish a target connection, '?' for help
- J-Link>
The suspicious part is "VTref=0.000V". But when I measure the voltage on pin 1 of the 20 pin JTAG connector, I see 3.3V. Does this indicate a faulty J-Link? Or are there other things that could cause this?