Update: JTAG and SWD programming and debugging from Netbeans!

10

Allright, got SWD working too now.

I made a small custom shield, that only connects the SWD pins.

The connections are:

Pin  ST-LINK V2 cable                           Spark Core
1,2                         VDD                 3.3V
4,6,8,10,12,14,16*          GND                 GND
7                           TMS_SWDIO           D7
9                           TCK_SWCLK           D6
15                          NRST                RESET

* One is enough, but more is preferred according to ST-Link V2 datasheet

Here is my little board:

I sent in a pull request to enable SWD without enabling JTAG:

st-util finds the spark via SWD and debugging in Netbeans works great. As described above, I upload the elf file via the run button, then attach the debugger and step debug.
I am able to stop on breakpoints, step through code, step into functions, step out of functions, etc.

I cannot reset the core via Netbeans or pause it when it is running freely, so I will have to make sure I hit a breakpoint and can then step debug or let it run freely from break point to break point.

I can now debug my TFT display, which is connected to a few pins that are also JTAG pins. When step debugging, I can let the text appear on screen line by line.

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