From cbb797bdccbce7cff7f0121955950bf318da0f02 Mon Sep 17 00:00:00 2001 From: Paul Fertser Date: Sun, 26 Oct 2014 13:49:51 +0300 Subject: [PATCH] tcl/interface/ftdi/swd-resistor-hack: clarify and add schematic diagram Change-Id: I8600ee983de85e4225430ae508a50cd938122d89 Signed-off-by: Paul Fertser Reviewed-on: http://openocd.zylin.com/2357 Tested-by: jenkins Reviewed-by: Andreas Fritiofson --- tcl/interface/ftdi/swd-resistor-hack.cfg | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tcl/interface/ftdi/swd-resistor-hack.cfg b/tcl/interface/ftdi/swd-resistor-hack.cfg index 78488752..04f3a739 100644 --- a/tcl/interface/ftdi/swd-resistor-hack.cfg +++ b/tcl/interface/ftdi/swd-resistor-hack.cfg @@ -3,6 +3,23 @@ # 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 (preferrably 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 -- 2.39.5