riscv-openocd/tcl/interface/ftdi/swd-resistor-hack.cfg

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INI

# SPDX-License-Identifier: GPL-2.0-or-later
#
# Connect TDI to SWDIO via a suitable series resistor (220-470 Ohm or
# so depending on the drive capability of the target and adapter);
# connect TDO directly to SWDIO.
#
# You also need to have reliable GND connection between the target and
# adapter. Vref of the adapter should be supplied with a voltage equal
# to the target's (preferably connect it to Vcc). You can also
# optionally connect nSRST. Leave everything else unconnected.
#
# FTDI Target
# ---- ------
# 1 - Vref ----------------- Vcc
# 3 - nTRST -
# 4 - GND ----------------- GND
# 5 - TDI ---/\470 Ohm/\--- SWDIO
# 7 - TMS -
# 9 - TCK ----------------- SWCLK
# 11 - RTCK -
# 13 - TDO ----------------- SWDIO
# 15 - nSRST - - - - - - - - - nRESET
#
transport select swd
ftdi layout_signal SWD_EN -data 0