Xenith wont connect to tool

[jaykup]

Yeah give these instructions a try. For the xenith the swd port is in the black connector.

@jaykup

• Download the correct firmware
• Open up the ESC. There is a JST PH 4 pin port that has nothing plugged into it. On the back of the board it has GND, DIO, CLK and 3.3v printed next to the pins.
• Hook an ST-LINK v2 up to that port. Only use the GND, DIO and CLK pins. Have the battery plugged in. If you cannot plug in to the battery, then use the 3.3v pin as well, but this is not the recommended method. I’ve killed a few 5v to 3.3v buck converters on other ESCs using this method.
• Plug the ST-LINK v2 into the PC
• Download the STM ST-LINK Utility
• Open and click Target → Connect.
• Click Target → Program & Verify
• Click Browse and load the .bin firmware file.
• Click Start.
• Wait 30 seconds then unplug the STLINK and the battery from the ESC. Plug in the ESC to the battery and connect through the normal USB port or bluetooth to configure with the VESC tool or VESC app.

More info specific to the unity/xenith swd connector here

@DSluijk

Take the jumpers, and connect them as follows to the ST-LINK (phase wires are oriented at the top). Take a look at your ST-LINK for the corresponding connections.

+-+-+-+-+-+-+-+
|1|2|3|4|5|x|x|
+-+-+-+-+-+-+-+
|x|x|x|x|x|x|x|
+-+-+-+-+-+-+-+

1: 3.3v
2: SWCLK
3: GND
4: SWDIO
5: RST

You don’t need to plug your unity into your battery. It is powered by the ST-LINK. You could leave out the 3.3v (not the ground!), and plug in the battery, but this makes it more complicated. I don’t have a picture of this connection, and my unity is buried somewhere inside of my board. Sorry about that.