CCS/TMS320F28032: Can't connect in debug mode, but connection test succeeds

Here is my jtag pin 10 pinout:

And here the XRS pin:

ok, so I found out, that I had the reset pin permanently driven high. That is solved.

Now, the test still succeeds, but when I try to launch a debug session, I get this error:

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 8.4.0.00006)

So, I found in another forum questions, there might be an issue with the nRST line. So looked with oscilloscope. It stays low all the time. I tried with no pull-down, with 2.2k Ohm pull-down, with 10k pull-down (as suggested in other resolved issues regarding this topic) - the XDS110 never pulls the Reset line high. I measured once again resistance between reset-line and GND - it is 10k.

So XDS110 should be able to pull it high, right?

And it is pin 10 on the 10-pin connector, right ?

Why is the test connection tool claiming, that it resetted the device successfully, when this is absolutely not the case ? 

Might be something broken in my XDS110 ? It is brand-new, I just received it.

Ferdinand,

While pin 10 is nReset for ARM specific JTAG connection, I don't beleive this is equivalent to TRSTn as implemented on TI specific MCU/Processors.

Looking at the adapter pinout in the XDS110 UG http://www.ti.com/lit/sprui94 on page 25 the adapter does not bring TRSTn signal to the Reset header on the 10 pin adapter(it is not brought out at all), this would also align to what you are seeing wrt TRSTn staying low(there is a small internal PD on this signal inside the MCU).

If you have the 10 pin JTAG header on your physical board, we may need to build a small transposer to take the 14-pin connector to the correct pins.

Let me know if I'm mis-reading the above, and we can further debug.

Best,

Matthew

Hi Mathew,

thanks for your reply. Do I get you right: I can not program my CPU with the standard jtag-10 pinout? I need the old 14-pin? Can you share how the transposer (pinout) should look like between 14 and 10-pin? 

I looked on the DRV8353-Eval board and the programming (what I see, is just normal hooked up). Isn't it 

MD017A_Sch.pdf

Hi,

so I found out, that on the 20-pin to 10-pin adapter you can change one Zero Ohm Jumper, and now the TRST pin is routed through pin 10.

Now I see the reset line toggling. But, unfortunately it is still not working... I see, definitely a reset toggle on the reset line, but why is CCS complaining, that device is holded in reset ? And still the question: Why is the Test Connection working successfully, but debugging/loading program is not possible?

I attached you screenshots from oscilloscope from all JTAG lines. For me nothing suspicious is seen here. (The first two pictures, yellow line is TRST line), on the last 2 pictures: yellow is TMS line:

And now changed yellow line to TMS line:

I'm really a bit desperate after this day...

I really do not get why the XDS110 thinks that the device is in reset ? 

As you can see in the first image, which I posted yesterday: Reset line is going from high to low. Twice. 

Also, another thing: 

C28xx: Flash Programmer: Warning: The configured device (TMS320F28032), does not match the detected device (). Flash Programming operations could be affected. Please consider modifying your target configuration file.

I bought this one TMS320F28032PAGQ and I selected "TMS320F28032" - this should be correct. Or do miss something else?

Signals are all there: yellow reset line, light blue: TDI; dark blue: TDO; purple: TCK.

I mean in the datasheett is written: 

My error is still:

C28xx: Failed CPU Reset: (Error -1137 @ 0x6) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: Trouble Reading Register PC: (Error -1137 @ 0x0) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: Trouble Reading Register ST1: (Error -1137 @ 0x6) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: GEL: Error while executing OnReset(-1): Target failed to read register ST1

at (ST1&~(0x0100)) [f28032.gel:292]

at C28x_Mode() [f28032.gel:32]

at OnReset(-(1))

C28xx: GEL: Error while executing OnTargetConnect(): Reset failed: retcode=-1

at GEL_Reset() [f28032.gel:93]

at OnTargetConnect()

C28xx: Flash Programmer: Warning: The configured device (TMS320F28032), does not match the detected device (). Flash Programming operations could be affected. Please consider modifying your target configuration file.

C28xx: Failed CPU Reset: (Error -1137 @ 0x0) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: Trouble Reading Register PC: (Error -1137 @ 0x0) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: Trouble Reading Register ST1: (Error -1137 @ 0x6) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: GEL: Error while executing OnReset(-1): Target failed to read register ST1

at (ST1&~(0x0100)) [f28032.gel:292]

at C28x_Mode() [f28032.gel:32]

at OnReset(-(1))

C28xx: GEL: Error calling OnPreFileLoaded(): Reset failed: retcode=-1

C28xx: Trouble Writing Memory Block at 0x8000 on Page 0 of Length 0xe7: (Error -1137 @ 0x8002) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 8.4.0.00006) 

C28xx: File Loader: Verification failed: Target failed to write 0x08000@Program

Ok, now I looked at the XRS pin, it is low, but I have 2.2k Resistor pull-up on this pin. As far I understood this pin should be high... Will investigate now this issue...

Hi,

so, I did some further investigations. Here is a screenshot from my 3.3 volt supply (blue) and the XRS Pin (purple) on start-up with a pull-up 2.2 kOhms between XRS and 3.3V:

Do you think any problem in power supply? 

So, afterwards I tried holding XRS directly at 3.3 V, but this leads to this error, when I try to load a program into the device:

C28xx: GEL Output: 
Device Calibration not complete, check if device is unlocked and recalibrate.C28xx: GEL Output: 
Device Calibration not complete, check if device is unlocked and recalibrate.C28xx: File Loader: Verification failed: Values at address 0x08000@Program do not match Please verify target memory and memory map.

Ferdinand,

Can you also check the 1.8V supply?  XRSn will not be released until both 3.3V and 1.8V supplies reach a minimum threshold.

-Tommy