[FE training-materials-updates] sysdev: instruction on how to plug the serial cable

[Alexandre Belloni]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=5949291912a1ed6ddfbf40f76f563a14dcee896c

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commit 5949291912a1ed6ddfbf40f76f563a14dcee896c
Author: Alexandre Belloni <alexandre.belloni at free-electrons.com>
Date:   Mon Aug 11 21:42:33 2014 +0200

    sysdev: instruction on how to plug the serial cable
    
    Would be bettre to include a picture
    
    Signed-off-by: Alexandre Belloni <alexandre.belloni at free-electrons.com>


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5949291912a1ed6ddfbf40f76f563a14dcee896c
 labs/sysdev-u-boot/sysdev-u-boot.tex |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/labs/sysdev-u-boot/sysdev-u-boot.tex b/labs/sysdev-u-boot/sysdev-u-boot.tex
index 634ffa3..de01a99 100644
--- a/labs/sysdev-u-boot/sysdev-u-boot.tex
+++ b/labs/sysdev-u-boot/sysdev-u-boot.tex
@@ -52,9 +52,10 @@ unzip sam-ba_2.12.zip
 
 \section{Setting up serial communication with the board}
 
-Plug the Xplained board on your computer using the provided
-USB-to-serial cable. When plugged-in, a serial port should appear,
-\code{/dev/ttyUSB0}.
+Plug the USB-to-serial cable on the Xplained board. The blue end of
+the cable is going to \code{GND} on \code{J13}, red on \code{RXD} and
+green on \code{TXD}. When plugged in your computer, a serial port
+should appear, \code{/dev/ttyUSB0}.
 
 You can also see this device appear by looking at the output of
 \code{dmesg}.