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Can't make JTAG connect on Zedboard CTT with Vivado 2014.2

Former Member

Can someone help me on this? I'm a JTAG newbie...

I'm working through the CTT for the Zedboard, but I'm having trouble connecting the JTAG-over-USB to upload the baremetal "Hello World" app.

Everything works fine until I try to run the app on the hardware from the SDK.  The hw_server shows up as TCP:127.0.0.1:3121, but attempting to connect to it says "Checking the status of the hardware server", but nothing else ever happens.

Opening an xmd console in the SDK causes the program to become unresponsive.

Running xmd from a shell prompt, every "connect " command I can compose just reads "cable not connected"

JP7-JP11 all set to ground.

Using Ubuntu Trusty 64-bit :
UART shows up as /dev/ttyACM0
JTAG shows up as /dev/ttyUSB0
I have read/write access to both (via dialout group)

dmesg when the board is powered up reads:

[ 9385.724105] usb 3-2: new full-speed USB device number 8 using xhci_hcd
[ 9385.798803] usb 3-2: New USB device found, idVendor=04b4, idProduct=0008
[ 9385.798810] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=4
[ 9385.798814] usb 3-2: Product: Cypress-USB2UART-Ver1.0G
[ 9385.798817] usb 3-2: Manufacturer: 2012 Cypress Semiconductor
[ 9385.798820] usb 3-2: SerialNumber: 836801551411
[ 9385.810949] cdc_acm 3-2:1.0: This device cannot do calls on its own. It is not a modem.
[ 9385.810978] cdc_acm 3-2:1.0: ttyACM0: USB ACM device
[ 9386.016218] usb 2-1.3: new high-speed USB device number 11 using ehci-pci
[ 9386.113599] usb 2-1.3: New USB device found, idVendor=0403, idProduct=6014
[ 9386.113606] usb 2-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 9386.113610] usb 2-1.3: Product: Digilent USB Device
[ 9386.113613] usb 2-1.3: Manufacturer: Digilent
[ 9386.113616] usb 2-1.3: SerialNumber: 210248570949
[ 9386.115948] ftdi_sio 2-1.3:1.0: FTDI USB Serial Device converter detected
[ 9386.115994] usb 2-1.3: Detected FT232H
[ 9386.115998] usb 2-1.3: Number of endpoints 2
[ 9386.116031] usb 2-1.3: Endpoint 1 MaxPacketSize 512
[ 9386.116034] usb 2-1.3: Endpoint 2 MaxPacketSize 512
[ 9386.116037] usb 2-1.3: Setting MaxPacketSize 512
[ 9386.116442] usb 2-1.3: FTDI USB Serial Device converter now attached to ttyUSB0

  • 0

    Have you looked at Sven Andersson's Zynq Design from scratch blog? He uses Ubuntu as his platform as well so there might be some good advice on how to setup the JTAG interface: http://svenand.blogdrive.com/archive/160.html#.U7QbafldU40

     

    There are some changes in how Vivado 2014.2 handles setting up the JTAG interface (the 'Configure JTAG Settings' option in the SDK has been decprecated and replaced by using the 'Target Connections' view). You should make sure that you have the JTAG 'Auto Detect' as well. We will be posting a Vivado 2014.2 version of the CTT in the near future as well.

     

    -Gary

  • 0 in reply to Former Member

    Thanks Gary (and Sven).  It's working now... In my case it was Sven's advise plus one other thing, which I'll record here for anyone who happens to hit the same problem.

    i) Install the Digilent runtime/utility/drivers from the Digilent website, as explained in part 13 of Sven's blog. I installed the ones that shipped with Vivado, but the Digilent ones were the ones that worked with Ubuntu.
    ii) Make sure that the Xilinx SDK hasn't inherited any http_proxy or https_proxy environment variables, or that the proxy is configured enough to pass the requests through cleanly, as this interferes with the SDK's attempt to talk to the hardware server.  I was using ntlmaps which was forwarding everything to a remote Windows Network proxy, at which point the xmd<->hw_server packets were just being dropped.