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ULINK2 Adapter Error No JTAG Devices Found

CarlosHunterLab

I purchased three ULINK2 adapter in the past year but they do not communicate with my target board. I tried two older ULINK adapters they work OK using the same target and JTAG cable.

 

Connection: PC > USB Cable > ULINK2 > 20-pin JTAG cable > 20-pin to 9pin Converter PCB > 9-pin JTAG cable > Target Board > ARM7 Processor

 

Target: ARM7 Processor STR710FZ2 (VCC is supplied from Target board)

Adapters: ULINK2 JTAG (VCC Jumper is set to ARM with f/w v2.03 & set to CMSIS-DAP boot mode)

OS Platform: Windows 10 Pro

Application: MDK uVision 5.38

Keil Pack: MDK ARM7/9 Legacy Device Support V5.25

 

Things I have tried that work using old ULINK2 adapter and do not work on three new ULINK2 adapters:

  1. Keil uVision v3.53, 5.16, 5.2, 5.28, 5.38
  2. ULINK2 CMSIS-DAP boot mode  (tested on all s/w version)
  3. ULINK2 ULINK boot mode (tested on all s/w version)
  4. Erased firmware and redownload with Keil uVision v3.53 & v5.38 (f/w v2.03)
  5. Changed ULINK2 clock frequency (used all available on drop down list)
  6. Used both JTAG Device Chain Manual Configuration for ARM7 and Automatic Configuration
  7. Confirmed the JTAG Adapter USB connection is working by finding Product ID under HID-compliant device properties