Other Parts Discussed in Thread: CC2640, UNIFLASH
Hi,
I've got a custom board that I can't connect to the XDS110 via SWD :
Pin34 (SOP0) is pulled up with 270 Ohm
Pin24 (SOP1) is pulled low
Pin23 (SOP2) is pulled low
Pin 21 (JTAG_TCK) is connected to pin 11 on XDS110
Pin 22 (JTAG_TMS) is connected to pin 1 on XDS110
Pin 35 (nRESEET) is connected to pin 2 on XDS110
GND on pin 10 on XDS 110
VCC on pin 5 on XDS110
I'm using the 14 pin TI header on the XDS110
I tried various settings in CCS and I always get the error:
The value is '-615' (0xfffffd99).
The title is 'SC_ERR_SWD_PROTOCOL'.
I tired lower the frequency to 1Mhz, I tired with SDW Mode - "Aux COM port is target UART port" and "Aux COM port is target TDO pin" and pretty much any combination of the other settings.
This is the complete log I get when pressing "Test connection":
[Start: Texas Instruments XDS110 USB Debug Probe_0]
Execute the command:
%ccs_base%/common/uscif/dbgjtag -f %boarddatafile% -rv -o -S integrity
[Result]
-----[Print the board config pathname(s)]------------------------------------
C:\Users\Reto\AppData\Local\TEXASI~1\CCS\
ccs1010\0\0\BrdDat\testBoard.dat
-----[Print the reset-command software log-file]-----------------------------
This utility has selected a 100- or 510-class product.
This utility will load the adapter 'jioxds110.dll'.
The library build date was 'May 7 2020'.
The library build time was '21:10:18'.
The library package version is '9.2.0.00002'.
The library component version is '35.35.0.0'.
The controller does not use a programmable FPGA.
An error occurred while hard opening the controller.
-----[An error has occurred and this utility has aborted]--------------------
This error is generated by TI's USCIF driver or utilities.
The value is '-615' (0xfffffd99).
The title is 'SC_ERR_SWD_PROTOCOL'.
The explanation is:
The target failed to see a correctly formatted SWD header. The
connection to the target may be unreliable. Try lowering the
TCLK setting before trying again.
[End: Texas Instruments XDS110 USB Debug Probe_0]
I use the same XDS110 for other MCU's such as CC2640 and it works fine so it's not an hardware issue on the XDS110. I have two of my custom boards here and they both show the same issue, I double checked all the writing and the connections and everything seems ok.
Any idea as to what could cause this issue?
Thanks
