From 7164193af971608b879a25af640e7a0f8818077a Mon Sep 17 00:00:00 2001
From: df8oe <df8oe@gmx.de>
Date: Thu, 15 Jun 2017 14:33:32 +0200
Subject: [PATCH 1/4] beginning of reverse engineering of temperature and
 humidity sensors

---
 docs/infos_for_sensors.txt | 73 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 docs/infos_for_sensors.txt

diff --git a/docs/infos_for_sensors.txt b/docs/infos_for_sensors.txt
new file mode 100644
index 0000000..863ee67
--- /dev/null
+++ b/docs/infos_for_sensors.txt
@@ -0,0 +1,73 @@
+DF8OEs investigations about sensor access
+------------------------------------------
+
+
+
+Temperature and humidity sensor directly goes to STM. There is no interface
+chip to handle them - all is done by software.
+
+
+
+Pinout of sensor boom:
+----------------------
+1 - GND
+2 - temperature sensor (1)
+3 - GND
+4 -
+5 - GND
+6 -
+7 - GND
+8 -
+9 -
+10 - GND
+11 -
+12 - GND
+13 - temperature sensor (2)
+14 - GND
+15 - GND
+16 - GND
+17 - GND
+18 - GND
+19 - GND
+20 - GND
+
+Counted from left to right if you position flexsensor in front of you, pins near
+to you, sensor away from you, copper upside
+
+
+
+All connections leading to sensor boom do have corresponding test points on PCB:
+--------------------------------------------------------------------------------
+Position PCB in front of you, flatconnector upside, sensor boom showing away from
+you, TX antenna leading to you. I draw connector as a row of "+++". Testpoints are
+small round copper isles (numbers correspond to sensor boom, G == GND, ? == unknown):
+
+
+
+
+                 11
+          +++++++++++++++++++++++
+
+                  G           4
+                    
+                    
+                    8    6    2
+                    
+                    
+                13        ?          9
+
+
+Investigations about temperature sensor:
+----------------------------------------
+Temperatrue sensor is resistance-based. If you insert a resistor between
+pin2 and pin13 of flatconnector, the following telemetry is transmitted:
+
+330R --> -168°
+560R --> -113°
+820R --> -52°
+1K --> -4.1°
+1.5K --> 121°
+2.2K --> 319°
+
+
+2 be continued
\ No newline at end of file

From 1fbdc87354df12c2ced136986bad13ab7e22470b Mon Sep 17 00:00:00 2001
From: df8oe <df8oe@gmx.de>
Date: Thu, 15 Jun 2017 14:51:12 +0200
Subject: [PATCH 2/4] next part of reverse engineering of temperature and
 humidity sensors

---
 docs/infos_for_sensors.txt | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/docs/infos_for_sensors.txt b/docs/infos_for_sensors.txt
index 863ee67..5bfedce 100644
--- a/docs/infos_for_sensors.txt
+++ b/docs/infos_for_sensors.txt
@@ -13,16 +13,16 @@ Pinout of sensor boom:
 1 - GND
 2 - temperature sensor (1)
 3 - GND
-4 -
+4 - humidity sensor1 (1)
 5 - GND
-6 -
+6 - humidity sensor1 (2)
 7 - GND
-8 -
-9 -
+8 - heater humidity sensor
+9 - heater humidity sensor
 10 - GND
-11 -
+11 - humidity sensor2 (1)
 12 - GND
-13 - temperature sensor (2)
+13 - temperature sensor (2) and humidity sensor2 (2)
 14 - GND
 15 - GND
 16 - GND

From 1224f01da67b607d15885ddf0f3878e1b6ba34a2 Mon Sep 17 00:00:00 2001
From: df8oe <df8oe@gmx.de>
Date: Thu, 15 Jun 2017 19:16:27 +0200
Subject: [PATCH 3/4] and next part of reverse engineering of temperature and
 humidity sensors

---
 docs/infos_for_sensors.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/docs/infos_for_sensors.txt b/docs/infos_for_sensors.txt
index 5bfedce..c9822ff 100644
--- a/docs/infos_for_sensors.txt
+++ b/docs/infos_for_sensors.txt
@@ -70,4 +70,13 @@ pin2 and pin13 of flatconnector, the following telemetry is transmitted:
 2.2K --> 319°
 
 
+Pressure sensor module:
+-----------------------
+
+This module is connected to SPI2 of STM. It uses SPI_NSS and only data output
+from module - SPI output from STM is not connected to module. So I think it is
+a kind of polling.
+
+
+
 2 be continued
\ No newline at end of file

From b0d7e0a5e2e05ea4d085b2f8c2bc963826156294 Mon Sep 17 00:00:00 2001
From: df8oe <df8oe@gmx.de>
Date: Fri, 16 Jun 2017 08:56:55 +0200
Subject: [PATCH 4/4] corrected Readme, fixed typo

---
 README.md                  | 1 -
 docs/infos_for_sensors.txt | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 949ddd6..3cd7bd0 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,6 @@ make
 
 # Configuration
 All configs in ```config.h```
-Shift 450Hz
 
 * ```CALLSIGN``` RTTY callsign
 * ```APRS_CALLSIGN``` APRS callsign, 6 characters. If your callsign is shorter add spaces
diff --git a/docs/infos_for_sensors.txt b/docs/infos_for_sensors.txt
index c9822ff..db8d396 100644
--- a/docs/infos_for_sensors.txt
+++ b/docs/infos_for_sensors.txt
@@ -59,7 +59,7 @@ small round copper isles (numbers correspond to sensor boom, G == GND, ? == unkn
 
 Investigations about temperature sensor:
 ----------------------------------------
-Temperatrue sensor is resistance-based. If you insert a resistor between
+Temperature sensor is resistance-based. If you insert a resistor between
 pin2 and pin13 of flatconnector, the following telemetry is transmitted:
 
 330R --> -168°