# SPDX-License-Identifier: GPL-2.0-or-later

# isodebug v1
# 5 kV isolated JTAG/SWD + UART adapter by Unjo AB

adapter driver ftdi
ftdi vid_pid 0x22b7 0x150d

ftdi layout_init 0x0ff8 0xfffb

ftdi layout_signal LED -ndata 0x0100
ftdi layout_signal nTRST -data 0x0200
ftdi layout_signal nSRST -noe 0x0400
ftdi layout_signal SWDIO_OE -data 0x0008

# Mode signals, either of these needs to be high to drive the JTAG/SWD pins.
# The power-on state is low for both signals but the init setting above sets
# JTAG_EN high.
ftdi layout_signal SWD_EN -data 0x1000
ftdi layout_signal JTAG_EN -data 0x0800

# In SWD mode, the JTAG_EN signal doubles as SWO_EN_N which switches the
# second FTDI channel UART RxD to the SWO pin instead of the separate RxD
# pin. Note that the default init state has this pin high so when OpenOCD
# starts in SWD mode, SWO is by default disabled. To enable SWO tracing,
# issue the command 'ftdi set_signal SWO_EN 1' where tracing is configured.
# To switch back to using the separate UART, SWO_EN needs to be disabled
# before exiting OpenOCD, or the adapter replugged.
ftdi layout_signal SWO_EN -nalias JTAG_EN
