A small script to test the pins of an FTDI JTAG adapter with OpenOCD

test-ftdi.sh

#!/bin/bash

cat >ftdi-test.cfg <<EOF
source [find interface/ftdi/dp_busblaster.cfg]
ftdi_layout_signal TCK -data 0x01
ftdi_layout_signal TDI -data 0x02
ftdi_layout_signal TDO -data 0x04
ftdi_layout_signal TMS -data 0x08

transport select jtag
adapter_khz 10
init
EOF

sudo echo
sudo openocd -f ftdi-test.cfg &
oo=$!
for signal in TCK TDO TMS; do
        (
                while true; do
                        echo "$signal = 0"
                        echo "ftdi_set_signal $signal 0" | nc localhost 3333
                        sleep 1
                        echo "$signal = 1"
                        echo "ftdi_set_signal $signal 0" | nc localhost 3333
                        sleep 1
                done
        ) &
        p=$!
        read
        kill $p
done

sudo kill $oo