Pressure sensor added

CHANGELOG.md

@@ -13,3 +13,16 @@ All notable changes to this project will be documented in this file.
 
 - First working version. But without pressure sensor. Physical RS485 bus untested, but did test ModBus over TTL serial.
 
+## [0.2.0] - 2024-01-04
+
+### Added
+
+- BMP280 pressure sensor via I2C
+
+### Fixed
+
+- Calibrated wind vane (analog input)
+
+### Changed
+
+- Heater of humidiy sensor only on when humidity is above 96% (was 80%). When heater is on temperature sensor also heats up, so use temperature sensor of BMP280 when heater is on.

README.md

@@ -14,7 +14,7 @@ Garni RS1 Passive Radiation Shield
 
 - SparkFun SEN-15901 Weather Station (wind speed, wind direction and rain fall)
 - Silicon Labs Si7021 (humidity and temperature)
-- Bosch BMP280 (pressure and temperature)
+- Bosch BMP280 (pressure)
 
 ## Measurements
 
@@ -46,7 +46,7 @@ The measurments and order of the measurements are the same as for APRS weather r
 | 30006   | Rain last 24 hours                  | l/m2 * 100            |
 | 30007   | Rain since midnight                 | NOT IMPLEMENTED       |
 | 30008   | Humidity                            | percent * 100         |
-| 30009   | Barometric pressure                 | hPa * 100             |
+| 30009   | Barometric pressure                 | hPa * 10              |
 
 The ModBus registers are 16 bit wide. For better precision, some units are scaled by a factor of 100. This way, values with up to two decimal points can be stored as 16 bit integer values. Just divide by 100 to get the floating point values.
 
@@ -65,7 +65,7 @@ Libraries are included with the source code of this project
 
 ## License
 
-Copyright (C) 2023  M.T. Konstapel
+Copyright (C) 2023, 2024  M.T. Konstapel
 
 ### Software
 

test_software/epever_control.py

@@ -92,4 +92,4 @@ class EpeverChargeController(minimalmodbus.Instrument):
 
     def get_pressure(self):
         """Charging mode: 0x0001 = PWM"""
-        return self.retriable_read_register(9, 0, 4)
+        return self.retriable_read_register(9, 1, 4)