From 14d9ec9d7ac1020ba72c0718f0d500b80d9b1d1c Mon Sep 17 00:00:00 2001
From: Matthew Stephenson <github@mainmast.org.uk>
Date: Sun, 24 Sep 2017 15:54:09 +0100
Subject: [PATCH 1/3] Add Silicon Labs Si7020-A20 Temperature & Humidity Sensor

---
 library/sensors.dcm |  6 ++++++
 library/sensors.lib | 21 +++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/library/sensors.dcm b/library/sensors.dcm
index b03381c7..47885f16 100644
--- a/library/sensors.dcm
+++ b/library/sensors.dcm
@@ -636,6 +636,12 @@ K digital temperature humidity sensor
 F https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/Humidity_Sensors/Sensirion_Humidity_Sensors_SHT1x_Datasheet_V5.pdf
 $ENDCMP
 #
+$CMP Si7020-A20
+D I2C Humidity and Temperature Sensor
+K I2C Humidity Temperature Sensor
+F https://www.silabs.com/documents/public/data-sheets/Si7020-A20.pdf
+$ENDCMP
+#
 $CMP TLV493D
 D Low power 3D magnetic sensor, I2C interface, SOT23-6 package
 K magnetic field i2c
diff --git a/library/sensors.lib b/library/sensors.lib
index 78d2e87f..08cba43e 100644
--- a/library/sensors.lib
+++ b/library/sensors.lib
@@ -1830,6 +1830,27 @@ X VDD 4 -100 300 100 D 50 50 1 1 W
 ENDDRAW
 ENDDEF
 #
+# Si7020-A20
+#
+DEF Si7020-A20 U 0 40 Y Y 1 F N
+F0 "U" -200 300 50 H V C CNN
+F1 "Si7020-A20" -400 400 50 H V C CNN
+F2 "Housings_DFN_QFN:DFN-6-1EP_3x3mm_Pitch0.95mm" 0 -400 50 H I C CNN
+F3 "" -200 300 50 H I C CNN
+$FPLIST
+ DFN*1EP*3x3mm*Pitch0.95mm*
+$ENDFPLIST
+DRAW
+S -300 200 300 -200 0 1 10 f
+X SDA 1 -400 100 100 R 50 50 1 1 B
+X GND 2 0 -300 100 U 50 50 1 1 W
+X NC 3 300 100 100 L 50 50 1 1 N N
+X NC 4 300 -100 100 L 50 50 1 1 N N
+X VDD 5 0 300 100 D 50 50 1 1 W
+X SCL 6 -400 -100 100 R 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
 # TLV493D
 #
 DEF TLV493D U 0 40 Y Y 1 F N

From c6e7bc248582a281cd8612a3b6fda18c1d4b3408 Mon Sep 17 00:00:00 2001
From: Matthew Stephenson <github@mainmast.org.uk>
Date: Sun, 24 Sep 2017 16:19:46 +0100
Subject: [PATCH 2/3] Add floating exposed pad

---
 library/sensors.lib | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/library/sensors.lib b/library/sensors.lib
index 08cba43e..93e32439 100644
--- a/library/sensors.lib
+++ b/library/sensors.lib
@@ -1845,9 +1845,10 @@ S -300 200 300 -200 0 1 10 f
 X SDA 1 -400 100 100 R 50 50 1 1 B
 X GND 2 0 -300 100 U 50 50 1 1 W
 X NC 3 300 100 100 L 50 50 1 1 N N
-X NC 4 300 -100 100 L 50 50 1 1 N N
+X NC 4 300 0 100 L 50 50 1 1 N N
 X VDD 5 0 300 100 D 50 50 1 1 W
 X SCL 6 -400 -100 100 R 50 50 1 1 I
+X EP 7 300 -100 100 L 50 50 1 1 N N
 ENDDRAW
 ENDDEF
 #

From 2867b945908f65af672bfb83884f01c64d3ac13d Mon Sep 17 00:00:00 2001
From: Matthew Stephenson <github@mainmast.org.uk>
Date: Sun, 24 Sep 2017 16:28:22 +0100
Subject: [PATCH 3/3] Changes as requested; matching footprint to follow

---
 library/sensors.dcm |  2 +-
 library/sensors.lib | 20 ++++++++++----------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/library/sensors.dcm b/library/sensors.dcm
index 47885f16..108793dc 100644
--- a/library/sensors.dcm
+++ b/library/sensors.dcm
@@ -637,7 +637,7 @@ F https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/
 $ENDCMP
 #
 $CMP Si7020-A20
-D I2C Humidity and Temperature Sensor
+D I2C Humidity and Temperature Sensor, DFN-6
 K I2C Humidity Temperature Sensor
 F https://www.silabs.com/documents/public/data-sheets/Si7020-A20.pdf
 $ENDCMP
diff --git a/library/sensors.lib b/library/sensors.lib
index 93e32439..d3d93dd2 100644
--- a/library/sensors.lib
+++ b/library/sensors.lib
@@ -1832,23 +1832,23 @@ ENDDEF
 #
 # Si7020-A20
 #
-DEF Si7020-A20 U 0 40 Y Y 1 F N
+DEF Si7020-A20 U 0 20 Y Y 1 F N
 F0 "U" -200 300 50 H V C CNN
 F1 "Si7020-A20" -400 400 50 H V C CNN
-F2 "Housings_DFN_QFN:DFN-6-1EP_3x3mm_Pitch0.95mm" 0 -400 50 H I C CNN
+F2 "Housings_DFN_QFN:DFN-6-1EP_3x3mm_Pitch1mm" 0 -400 50 H I C CNN
 F3 "" -200 300 50 H I C CNN
 $FPLIST
- DFN*1EP*3x3mm*Pitch0.95mm*
+ DFN*1EP*3x3mm*Pitch1mm*
 $ENDFPLIST
 DRAW
-S -300 200 300 -200 0 1 10 f
-X SDA 1 -400 100 100 R 50 50 1 1 B
-X GND 2 0 -300 100 U 50 50 1 1 W
-X NC 3 300 100 100 L 50 50 1 1 N N
-X NC 4 300 0 100 L 50 50 1 1 N N
+S -400 200 400 -200 0 1 10 f
+X SDA 1 -500 100 100 R 50 50 1 1 B
+X GND 2 -100 -300 100 U 50 50 1 1 W
+X NC 3 400 100 100 L 50 50 1 1 N N
+X NC 4 400 -100 100 L 50 50 1 1 N N
 X VDD 5 0 300 100 D 50 50 1 1 W
-X SCL 6 -400 -100 100 R 50 50 1 1 I
-X EP 7 300 -100 100 L 50 50 1 1 N N
+X SCL 6 -500 -100 100 R 50 50 1 1 I
+X PAD 7 100 -300 100 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #