I have purchased a J-link which I suspect might be a clone but I cannot get it to connect to My chip
I am trying to flash the firmware on an HDMI board using this J-link but I get the error
Failed to connect
cannot establish a connection to target
It would not let me do anything until i updated the firmware which it updated ok
The led blinks from green to red
Attached are photos of the item
I do not know if I need to reflash the firmware or is it a setting
Please can someone help me
Thanks so much in advance
If you have all the wiring correctly regarding the SWD interface (and common GND) of course, it could just be that the JTAG/SWD interface has been disabled on the chip after programming, by burning an internal fuse. This is a very common countermeasure against people trying to dump the firmware off a commercial product for protection of intellectual property. See for example How the Apple AirTags were hacked - YouTube.
Also can someone explain what is jlink Target interface voltage “VIF”
It’s an analog input, intended use is measuring the target power supply voltage. It does not provide power for the target, just measures it.
The J-Link board on the picture is definitely a clone, and Segger actively defends against clones. Considering the low price of the jlink edu mini, what is the point for a clone?
However, if the Segger driver refuses a clone, it writes something like “Faulty device”, and your error message is different. So it’s possible that the reson is not the clone, but faulty wiring, missing target power, or incorrect settings.
Did you test it using the Segger JFlash Lite program for erasing or flashing the target?
What happens, if you test the Jlink adapter using the Jlink Commander or Jlink Configurator?
My edu mini’s response:
SEGGER J-Link Commander V7. 0a (Compiled Apr 16 2021 15:34:05)
DLL version V7.00a, compiled Apr 16 2021 15:32:47
Connecting to J-Link via USB…O.K.
Firmware: J-Link EDU Mini V1 compiled Feb 18 2021 11:25:23
Hardware version: V1.00
License(s): FlashBP, GDB
Type “connect” to establish a target connection, ‘?’ for help
I am a first time user of using J-link
I know that I have been sold a J-link clone but have been told it works and read reviews from others that it works
I know the J-link edu is cheap but the edu version doesnt support the chip that i need to program
I have connected it correctly, I think
I am using SWD mode
I want to program a new TMPM361F10FG but i keep getting an error that I have uploaded
I don’t have other development boards to try My J-link clone on but I have a J-link V8 that is also a clone so what I thought is use My v9 J-link to read the J-link V8 firmware
Still get the same error
What am i doing wrong
Please can someone confirm how to wire this
I will really appreciate the help from everyone here
i dont have schematics
Can you tell me how you would read the firmware on another jlink using a Jlink v9
how would i read this
if i know how you would do it then i can copy it
You are more experienced