EVAL-CN0428-EBZ No Response Issues

Hi there,

I am trying to set up the CN0428 demo with ph probe. I followed the https://wiki.analog.com/resources/eval/user-guides/circuits-from-the-lab/cn0428 . But I encounter the following problem.

1. Plug in the USB cable to my laptop and connect to EVAL-ADICUP3029, I can see the "DPLINK". Flashed the https://github.com/analogdevicesinc/EVAL-ADICUP3029/tree/master/projects/ADuCM3029_demo_cn0428_cn0429 into the board. And type "help" from PuTTY (baud rate, COM port are correct at PuTTY and device manager), nothing is coming out. 

2. Plug in the EVAL-M355-ARDZ-INT on top of EVAL-ADICUP3029, I still can see all the LED on the EVAL-ADICUP3029 on. Once I plug in EVAL-CN0428-EBZ on top of EVAL-M355-ARDZ-INT, all the LED on EVAL-ADICUP3029 are off and "DPLINK" has been disconnected from the PC. And EVAL-CN0428-EBZ get hot (touch on the ADuCM355 MCU).

 

I could confirm that all the switches and jumpers are correct. I'd appreciate for your feedback. Thank you very much and looking forward to your reply.