Error: dtmcontrol is 0. Check JTAG connectivity/board power.

[usonix666]

use the Vexriscv,and generate the MuraxSOC(InitRam).running on FPGA board, the UART and GPIO(Blink led) are working. when I use the openocd connect the core, "Error: dtmcontrol is 0. Check JTAG connectivity/board power."

Licensed under GNU GPL v2 libusb1 09e75e98b4d9ea7909e8837b7a3f00dda4589dc3 For bug reports, read http://openocd.org/doc/doxygen/bugs.html riscv.cpu Info : Listening on port 6666 for tcl connections Info : Listening on port 4444 for telnet connections Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED Info : clock speed 800 kHz Info : JTAG tap: riscv.cpu tap/device found: 0x10001fff (mfg: 0x7ff (), part: 0x0001, ver: 0x1) Error: dtmcontrol is 0. Check JTAG connectivity/board power. Info : starting gdb server for riscv.cpu on 3333 Info : Listening on port 3333 for gdb connections

[Dolu1990]

Hi

Error: dtmcontrol is 0. Check JTAG connectivity/board power. seem to indicate that you are using the wrong openocd, did you used something else than https://github.com/SpinalHDL/openocd_riscv ?