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CCS/TMS320F28075: Error connecting to the target : (Error -1015 @ 0x0) and (Error -1135 @ 0x0)

Liu Don
Prodigy 80 points
Part Number: TMS320F28075
Other Parts Discussed in Thread: UNIFLASH, , TMS320F28379D, TMS320F28035, C2000WARE

Tool/software: Code Composer Studio

Hi

Processor is an TMS320F28075PZPT,

first I use target configurations to test connection, get result is succeeded.

and then I load image will get a error information shown below:

C28xx_CPU1: Error connecting to the target: (Error -1015 @ 0x0) Device is not responding to the request. Device may be locked, or the debug probe connection may be unreliable. Unlock the device if

possible (e.g. use wait in reset mode, and power-cycle the board). If error persists, confirm configuration and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 7.0.48.0)

C28xx_CPU1: Error connecting to the target: (Error -1135 @ 0x0) The debug probe reported an error. Confirm debug probe configuration and connections, reset the debug probe, and retry the operation.

(Emulation package 7.0.48.0)

I try the method form network address , but not solve my problem.
software-dl.ti.com/.../ccsv7_debugging_jtag_connectivity_issues.html

I describe my F28075 some pin connect situation:
TMS: when load image this pin have signal.
TDI: when load image this pin have signal.
TDO: have a 2.2k ohms pull high 3.3V. when load image this pin have signal.
TCK: when load image this pin have signal.
nReset: when load image this pin have signal.
VDDIO: No noise in load image.
VDD: serial a 10uF pull low to GND.
nXRS: serial a 2.2k ohms pull high to 3.3V.
VREGENZ: serial a 0 ohm pull low to GND.
VDDOSC: serial a 0.1uF pull low to GND.
VSSOSC: direct pull low to GND.
X1: serial a 0 ohm pull low to GND.
VDDA: No noise in load image.
VSSA: serial a 1uF pull low to GND.
GPIO72: serial a 2.2k ohms pull high to 3.3V.
GPIO84: serial a 2.2k ohms pull high to 3.3V.

I already do some test, but not effect:
1. change XDS100 circuit and wire.
2. check F28075's all pin is connect to circuit.
3. change a new F28075 IC.
4. use uniflash to load image.
5. let F28075 work in wait boot mode but have same error too.
6. VREGENZ pin pull high to 3.3V, and add 1.2V to all VDD pin.
7. VDDOSC pin connet to 3.3V.

But I have a discovery when I compare the waveform from F28075 and F28035.
When F28035's JTAG pull nReset pin to low will stop 250usec low / 27.5msec high signal in nRXS pin, but F28075 can’t, so I guess it is make my problem’s murderer. but I don’t kwon how to solve this problem.

please help me.

Best Regards,
Don

  • 0
    TI__Guru* 77390 points
    Liu,
    Since you can connect to the device I'll focus on the loading issue. Some questions:

    Q1)Are you loading to flash regions or just SRAM regions?
    Q2)Can you confirm the device/emulator combination is matching in the CCXML file to the F2807x? This is important as it will determine the settings Code Composer chooses for the flash programmation.
    Q3)Is the PCB a TI reference design or is this a custom PCB?
    Q4)If custom PCB please provide the clock frequency of the external oscillator/X-tal if any

    Best,
    Matthew
  • 0 in reply to MatthewPate
    Prodigy 80 points

    Hi Matthew

    Thank you for your reply.

    Re. Q1) I was load to flash regions.
    Re. Q2) My CCXML file select connection is "Texas Instruments XDS100v2 USB Debug Probe" and select Board or Device is "TMS320F28075", others setting not to change. Do I have other setting point to pay attention??
    Re. Q3) Because TI not have TMS320F28075 development kit, so I reference TMS320F28379D development kit design and My company's TMS320F28035 PCB design. Do you have other recommend reference design??
    Re. Q4) I was use internal oscillator.

    Best Regards,
    Don

  • 0 in reply to Liu Don
    TI__Guru* 77390 points
    Don,
    Would it be possible to use a C2000Ware example file; built for SRAM only and try and load it? I want to see if there is some issue when the debugger tried to program the flash during the file load.

    Matt
  • 0 in reply to MatthewPate
    Prodigy 80 points

    Hi Matthew,

    thank you for your reply.

    I try the C2000Ware's sample that address is "D:\ti\c2000\C2000Ware_1_00_06_00\driverlib\f2807x\examples\cpu1\adc", and get same error.

    C28xx_CPU1: Error connecting to the target: (Error -1135 @ 0x0) The debug probe reported an error. Confirm debug probe configuration and connections, reset the debug probe, and retry the operation. (Emulation package 7.0.48.0)
    C28xx_CPU1: Error connecting to the target: (Error -1015 @ 0x0) Device is not responding to the request. Device may be locked, or the debug probe connection may be unreliable. Unlock the device if possible (e.g. use wait in reset mode, and power-cycle the board). If error persists, confirm configuration and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 7.0.48.0)

    Could you have any other method for me to try??

    Best Regards,
    Don

  • 0 in reply to MatthewPate
    Prodigy 80 points
    Hi Matthew,

    This issue is be resolved. The VDD3VFL pin isn't pull high to 3.3V to cause this issue.

    Thank you for your help.
    Best Regards,
    Don