Nexys 4 DDR Target Error

[dgormley]

I am able to successfully write the bit stream with no errors.  I can successfully program the FGPA and associate the .elf file.  I can successfully build my c++ program.  However, when I try to run the software (launch on hardware), I receive this SDK error:

14:44:16 INFO : Registering command handlers for SDK TCF services
14:44:16 INFO : Launching XSCT server: xsct.bat -interactive C:\Users\djxvillain\Projects\Nexys4\vanilla\vanilla.sdk\temp_xsdb_launch_script.tcl
14:44:18 INFO : XSCT server has started successfully.
14:44:18 INFO : Successfully done setting XSCT server connection channel 
14:44:23 INFO : Successfully done setting SDK workspace 
14:44:23 INFO : Processing command line option -hwspec C:/Users/djxvillain/Projects/Nexys4/vanilla/vanilla.sdk/mcs_top_vanilla.hdf.
14:46:29 INFO : CPU Number not found for processor microblaze_I, defaulting to 0
14:46:32 INFO : 'targets -set -filter {jtag_cable_name =~ "Digilent Nexys4DDR 210292A4BC08A" && level==0} -index 0' command is executed.
14:46:32 INFO : 'fpga -state' command is executed.
14:46:34 INFO : Connected to target on host '127.0.0.1' and port '3121'.
14:46:35 INFO : CPU Number not found for processor microblaze_I, defaulting to 0
14:46:35 INFO : Bscan info not found for microblaze  microblaze_I, defaulting to 2
14:46:35 INFO : CPU Number not found for processor microblaze_I, defaulting to 0
14:46:35 INFO : Bscan info not found for microblaze  microblaze_I, defaulting to 2
14:46:35 INFO : Jtag cable 'Digilent Nexys4DDR 210292A4BC08A' is selected.
14:46:35 INFO : 'jtag frequency' command is executed.
14:46:39 ERROR : no targets found with "name =~ "microblaze*#0" && bscan=="USER2"  && jtag_cable_name =~ "Digilent Nexys4DDR 210292A4BC08A"". available targets:
  1* xc7a100t
14:46:39 INFO : ----------------XSDB Script----------------
connect -url tcp:127.0.0.1:3121
targets -set -nocase -filter {name =~ "microblaze*#0" && bscan=="USER2"  && jtag_cable_name =~ "Digilent Nexys4DDR 210292A4BC08A"} -index 0
----------------End of Script----------------

 

I think I need to change the XSDB Script to change the jtag_cable_name.  I have been unsuccessful trying to do this.  I've tried using "jtag targets" to change the target to xc7a100t, but it just switches back when I hit run.  I have spent days trying to figure it out.  I'm pretty desperate and stressed out at this point.  Could someone please help me figure out how to fix this error? 

[JColvin]

Hi @dgormley,

It looks like this thread discusses and resolves a very similar issue to what you are experiencing. In this case, the JTAG jumper mode for the Nexys 4 DDR will be JP1.

Let me know how this works out for you.

Thanks,
JColvin