From d78aea8c8e50750e385beab8763a0afc09799d7e Mon Sep 17 00:00:00 2001
From: Jake <jake.read@cba.mit.edu>
Date: Thu, 7 Feb 2019 21:00:49 -0500
Subject: [PATCH] add note on JTAG disable fuse

---
 README.md                 |  4 +++
 circuit/bbxmega/eagle.epf | 65 +++++++++++++--------------------------
 2 files changed, 25 insertions(+), 44 deletions(-)

diff --git a/README.md b/README.md
index 324c4c5..929fac0 100644
--- a/README.md
+++ b/README.md
@@ -98,6 +98,10 @@
 	<li><a href='i2c/loadcell-reading-v-force.png'>Results</a></li>
 </ul>
 
+## Pro Tips Etc
+
+ - Some XMEGAs have a JTAG peripheral (to program w/o PDI, and for debugging). There is a JTAG fuse which is set 'on' to default: this will prevent you from using the pins that JTAG uses. On the XMEGA A3U series, this is in PortB. 
+
 ## Atmel Studio Toolchain
 
 ``` !warn! windows only, sorry ```
diff --git a/circuit/bbxmega/eagle.epf b/circuit/bbxmega/eagle.epf
index 8687485..724c00f 100644
--- a/circuit/bbxmega/eagle.epf
+++ b/circuit/bbxmega/eagle.epf
@@ -1,5 +1,5 @@
 [Eagle]
-Version="08 03 02"
+Version="09 01 01"
 Platform="Windows"
 Globals="Globals"
 Desktop="Desktop"
@@ -10,39 +10,20 @@ UsedLibraryUrn="urn:adsk.eagle:library:217"
 UsedLibraryUrn="urn:adsk.eagle:library:325"
 UsedLibraryUrn="urn:adsk.eagle:library:371"
 UsedLibrary="D:/Dropbox (Personal)/CBA/doc/libraries/eagle/fab.lbr"
-UsedLibrary="D:/Dropbox (Personal)/CBA/doc/libraries_jake/eagle/jake/tag-connect-2030.lbr"
 UsedLibrary="D:/Dropbox (Personal)/CBA/doc/libraries_jake/eagle/jake/tag-connect-2050.lbr"
 UsedLibrary="D:/Dropbox (Personal)/CBA/doc/libraries_jake/eagle/sparkfun/SparkFun-Connectors.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/Comparators.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/Digital.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/FilterProducts.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/Misc.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/Opamps.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/Optos.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/PAsystem.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/PowerProducts.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/References.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/SpecialFunctions.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/capmeter.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/diode.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/lt-spice-simulation.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/lt-supply.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/rload.lbr"
-UsedLibrary="C:/EAGLE 8.3.2/lbr/ltspice/sym.lbr"
 UsedLibrary="D:/Dropbox (Personal)/CBA/doc/libraries_jake/eagle/marekr/borkedlabs-passives.lbr"
 
 [Win_1]
-Type="Schematic Editor"
-Loc="0 0 1919 1016"
-State=1
-Number=2
-File="bbxmega.sch"
-View="-13.5313 5.97904 167.1 132.776"
-WireWidths=" 0.0762 0.1016 0.127 0.15 0.2 0.2032 0.254 0.3048 0.4064 0.508 0.6096 0.8128 1.016 1.27 2.54 0.1524"
+Type="Board Editor"
+Number=1
+File="bbxmega.brd"
+View="-0.0538375 -4.25636 63.4947 47.255"
+WireWidths=" 0.0762 0.1016 0.127 0.15 0.2 0.2032 0.3048 0.4064 0.508 0.6096 0.8128 1.016 1.27 2.54 0.1524 0.254"
 PadDiameters=" 0.254 0.3048 0.4064 0.6096 0.8128 1.016 1.27 1.4224 1.6764 1.778 1.9304 2.1844 2.54 3.81 6.4516 0"
 PadDrills=" 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.65 0.7 0.75 0.8 0.85 0.9 1 0.6"
 ViaDiameters=" 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 1.05 1.1 1.15 1.2 1.3 0"
-ViaDrills=" 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35"
+ViaDrills=" 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35 0.8636"
 HoleDrills=" 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35"
 TextSizes=" 0.254 0.3048 0.4064 0.6096 0.8128 1.016 1.27 1.4224 1.6764 1.9304 2.1844 2.54 3.81 5.08 6.4516 1.778"
 PolygonSpacings=" 0.254 0.3048 0.4064 0.6096 0.8128 1.016 1.4224 1.6764 1.778 1.9304 2.1844 2.54 3.81 5.08 6.4516 1.27"
@@ -53,14 +34,14 @@ DimensionExtWidths=" 0.127 0.254 0.1 0.13 0.26 0"
 DimensionExtLengths=" 1.27 2.54 1 2 3 0"
 DimensionExtOffsets=" 1.27 2.54 1 2 3 0"
 SmdSizes=" 0.3048 0.1524 0.4064 0.2032 0.6096 0.3048 0.8128 0.4064 1.016 0.508 1.27 0.6604 1.4224 0.7112 1.6764 0.8128 1.778 0.9144 1.9304 0.9652 2.1844 1.0668 2.54 1.27 3.81 1.9304 5.08 2.54 6.4516 3.2512 1.27 0.635"
-WireBend=0
-WireBendSet=31
+WireBend=3
+WireBendSet=0
 WireCap=1
 MiterStyle=0
 PadShape=0
 ViaShape=1
 PolygonPour=0
-PolygonRank=0
+PolygonRank=1
 PolygonThermals=1
 PolygonOrphans=0
 TextRatio=8
@@ -75,17 +56,13 @@ SwapLevel=0
 ArcDirection=0
 AddLevel=2
 PadsSameType=0
-Layer=91
-Views=" 1: -13.5313 5.97904 167.1 132.776"
-Sheet="1"
+Layer=1
 
 [Win_2]
-Type="Board Editor"
-Loc="0 0 1919 1016"
-State=1
-Number=1
-File="bbxmega.brd"
-View="-1.29872 8.23325 42.8321 44.005"
+Type="Schematic Editor"
+Number=2
+File="bbxmega.sch"
+View="35.5536 22.2327 122.664 83.3809"
 WireWidths=" 0.0762 0.1016 0.127 0.15 0.2 0.2032 0.254 0.3048 0.4064 0.508 0.6096 0.8128 1.016 1.27 2.54 0.1524"
 PadDiameters=" 0.254 0.3048 0.4064 0.6096 0.8128 1.016 1.27 1.4224 1.6764 1.778 1.9304 2.1844 2.54 3.81 6.4516 0"
 PadDrills=" 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.65 0.7 0.75 0.8 0.85 0.9 1 0.6"
@@ -101,14 +78,14 @@ DimensionExtWidths=" 0.127 0.254 0.1 0.13 0.26 0"
 DimensionExtLengths=" 1.27 2.54 1 2 3 0"
 DimensionExtOffsets=" 1.27 2.54 1 2 3 0"
 SmdSizes=" 0.3048 0.1524 0.4064 0.2032 0.6096 0.3048 0.8128 0.4064 1.016 0.508 1.27 0.6604 1.4224 0.7112 1.6764 0.8128 1.778 0.9144 1.9304 0.9652 2.1844 1.0668 2.54 1.27 3.81 1.9304 5.08 2.54 6.4516 3.2512 1.27 0.635"
-WireBend=1
-WireBendSet=0
+WireBend=0
+WireBendSet=31
 WireCap=1
 MiterStyle=0
 PadShape=0
 ViaShape=1
 PolygonPour=0
-PolygonRank=1
+PolygonRank=0
 PolygonThermals=1
 PolygonOrphans=0
 TextRatio=8
@@ -123,12 +100,12 @@ SwapLevel=0
 ArcDirection=0
 AddLevel=2
 PadsSameType=0
-Layer=1
+Layer=91
+Views=" 1: 35.5536 22.2327 122.664 83.3809"
+Sheet="1"
 
 [Win_3]
 Type="Control Panel"
-Loc="0 0 1919 1039"
-State=1
 Number=0
 
 [Desktop]
-- 
GitLab