Not able to debug 'hello' using freedomstudio

I am using freedom e300 arty devkit with a Sifive openocd on an Arduino 1.8.2.
When I try to debbug the code I get these messages on the console.

Open On-Chip Debugger 0.10.0+dev (SiFive OpenOCD 0.10.0-2020.04.6)
Licensed under GNU GPL v2
For bug reports:
debug_level: 0

Using JTAG
Error: JTAG scan chain interrogation failed: all ones
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway…
Error: riscv.cpu: IR capture error; saw 0x1f not 0x01
Error: Unsupported DTM version: 15
Error: Target not examined yet

Error: Unsupported DTM version: 15

I’m using the olimex arm-usb-tiny-h debugger
I’ve already double-checked the connection with the debuger, and the wiring are ok.
I’ve succesfully programmed the .mcs file using vivado.

when you say 'freedom e300 arty devkit` are you using an Arty 100T board?

You can do a sanity check by connecting a debug session using Freedom Studio which has built in support for the Arty 100T (as well as .mcs programming for Arty). You can find the FS download at