5 Replies Latest reply on Jun 26, 2012 9:36 AM by userc_43726

    Problems with Jtag





      I have the FX3 DVK Device Board and I has install the FX3Sdkv1. So long everything is fine, I be able to compile the example projects and download it to the board with the "Control Center". But now I want to use Breakpoints and so on and thats why I bought a yellow j-link Adatpter and follow the instructions under " 11.FX3 Development Tools". But when I want to debug, the debugger never reach a Brekpoint. The ProgrammCounter will always hang at memory 0xf0000048. Has anybody a idea? Maybe i only have wrong configuration? 







        • 1. Re: Problems with Jtag

          Yellow? Is that a Segger JTAG debugger?  Mine is black.

          • 2. Re: Problems with Jtag

            The yellow J-Link works very well. Did you set up the GDB commands correctly in eclipse? Or did you try to attach to a running FX3? There are deifferent setups. Did you allow the J-Link software to act as server and not blocked by the firewall?

            • 3. Re: Problems with Jtag

              Hi and thanks for your answers.


              I set the GDB up how it is described in the FX3 Programmers Manual. Set the GDB debugger to arm-none-eabi-gdb.exe and add the following to the command section:






              set prompt (arm-gdb)




              # This connects to a target via netsiliconLibRemote



              # listening for commands on this PC's tcp port 2331



              target remote localhost:2331



              monitor speed 1000



              monitor endian little



              set endian little



              monitor reset



              # Set the processor to SVC mode



              monitor reg cpsr =0xd3



              # Disable all interrupts



              monitor memU32 0xFFFFF014 =0xFFFFFFFF



              # Enable the TCMs



              monitor memU32 0x40000000 =0xE3A00015



              monitor memU32 0x40000004 =0xEE090F31



              monitor memU32 0x40000008 =0xE240024F



              monitor memU32 0x4000000C =0xEE090F11



              # Change the FX3 SYSCLK setting based on


              # input clock frequency. Update with



              # correct value from list below.

              # Clock input is 19.2 MHz: Value = 0x00080015

              # Clock input is 26.0 MHz: Value = 0x00080010

              # Clock input is 38.4 MHz: Value = 0x00080115

              # Clock input is 52.0 MHz: Value = 0x00080110

              monitor memU32 0xE0052000 = 0x00080015

              # Add a delay to let the clock stabilize.

              monitor sleep 1000

              set $pc =0x40000000





              In the debug-console is a warning, maybe this is the problem:


              Regards Muffel



              &"info threads\n"
              &"warning: RMT ERROR : failed to get remote thread list.\n"
              ~"* 1 Thread <main> 0xf0000048 in ?? ()\n"




              • 4. Re: Problems with Jtag



                I have the problem solved. Simply deinstalled the SEGGER J-Link Arm V4.41d and install the SEGGER J-Link Arm V4.36K and everything works fine.

                • 5. Re: Problems with Jtag

                  Hi muffel,


                  do you have several threads and can you debug them on task level? I have two threds but in the debug window it only shows me one thread.