DS2438 module integrated

esp32/include/ControllerConfiguration.h

@@ -53,8 +53,9 @@
 #define MOIST_SENSOR_MAX_ADC                (85 * 4095 / 100)
 #define MOIST_SENSOR_MIN_ADC                (25 * 4095 / 100)
 
-#define SOLAR_VOLT(adc) ADC_TO_VOLT_WITH_MULTI(adc, 4.0306) /**< 100k and 33k voltage dividor */
-#define ADC_5V_TO_3V3(adc) ADC_TO_VOLT_WITH_MULTI(adc, 1.69) /**< 33k and 47k8 voltage dividor */
+#define SOLAR_VOLT_FACTOR           2
+#define BATTSENSOR_INDEX_SOLAR      0
+#define BATTSENSOR_INDEX_BATTERY    1
 #define MS_TO_S 1000
 
 #define SENSOR_LIPO 34   /**< GPIO 34 (ADC1) */

esp32/include/DS2438.h

@@ -0,0 +1,112 @@
+/*
+ *   DS2438.h
+ *
+ *   by Joe Bechter
+ *
+ *   (C) 2012, bechter.com
+ *
+ *   All files, software, schematics and designs are provided as-is with no warranty.
+ *   All files, software, schematics and designs are for experimental/hobby use.
+ *   Under no circumstances should any part be used for critical systems where safety,
+ *   life or property depends upon it. You are responsible for all use.
+ *   You are free to use, modify, derive or otherwise extend for your own non-commercial purposes provided
+ *       1. No part of this software or design may be used to cause injury or death to humans or animals.
+ *       2. Use is non-commercial.
+ *       3. Credit is given to the author (i.e. portions © bechter.com), and provide a link to the original source.
+ *
+ */
+
+#ifndef DS2438_h
+#define DS2438_h
+
+#include <Arduino.h>
+#include <OneWire.h>
+
+#define DS2438_TEMPERATURE_CONVERSION_COMMAND 0x44
+#define DS2438_VOLTAGE_CONVERSION_COMMAND 0xb4
+#define DS2438_WRITE_SCRATCHPAD_COMMAND 0x4e
+#define DS2438_COPY_SCRATCHPAD_COMMAND 0x48
+#define DS2438_READ_SCRATCHPAD_COMMAND 0xbe
+#define DS2438_RECALL_MEMORY_COMMAND 0xb8
+
+#define PAGE_MIN 0
+#define PAGE_MAX 7
+
+#define DS2438_CHA 0
+#define DS2438_CHB 1
+
+#define DS2438_MODE_CHA 0x01
+#define DS2438_MODE_CHB 0x02
+#define DS2438_MODE_TEMPERATURE 0x04
+
+#define DS2438_TEMPERATURE_DELAY 10
+#define DS2438_VOLTAGE_CONVERSION_DELAY 8
+
+#define DEFAULT_PAGE0(var) uint8_t var[8] { \
+    0b00001011 /* X, ADB=0, NVB=0, TB=0, AD=1, EE=0, CA=1, IAD=1 */, \
+    0, /* Temperatur */ \
+    0, /* Temperatur */ \
+    0, /* Voltage */ \
+    0, /* Voltage */ \
+    0, /* Current */ \
+    0, /* Current */ \
+    0 /* Threashold */ \
+}
+
+typedef struct PageOne {
+    uint8_t eleapsedTimerByte0; /**< LSB of timestamp */
+    uint8_t eleapsedTimerByte1;
+    uint8_t eleapsedTimerByte2;
+    uint8_t eleapsedTimerByte3; /**< MSB of timestamp */
+    uint8_t ICA; /**< Integrated Current Accumulator (current flowing into and out of the battery) */
+    uint8_t offsetRegisterByte0; /**< Offset for ADC calibdation */
+    uint8_t offsetRegisterByte1; /**< Offset for ADC calibdation */
+    uint8_t reserved;
+} PageOne_t;
+
+typedef struct PageSeven {
+    uint8_t userByte0;
+    uint8_t userByte1;
+    uint8_t userByte2;
+    uint8_t userByte3;
+    uint8_t CCA0;   /**< Charging Current Accumulator (CCA) */
+    uint8_t CCA1;   /**< Charging Current Accumulator (CCA) */
+    uint8_t DCA0;   /**< Discharge Current Accumulator (DCA) */
+    uint8_t DCA1;   /**< Discharge Current Accumulator (DCA) */
+} PageSeven_t;
+
+typedef uint8_t DeviceAddress[8];
+
+class DS2438 {
+    public:
+        DS2438(OneWire *ow, float currentShunt);
+        DS2438(OneWire *ow, uint8_t *address);
+
+        void begin();
+        void update();
+        double getTemperature();
+        float getVoltage(int channel=DS2438_CHA);
+        float getCurrent();
+        boolean isError();
+        boolean isFound();
+    private:
+        bool validAddress(const uint8_t*);
+        bool validFamily(const uint8_t* deviceAddress);
+        
+        bool deviceFound = false;
+        OneWire *_ow;
+        DeviceAddress _address;
+        uint8_t _mode;
+        double _temperature;
+        float _voltageA;
+        float _voltageB;
+        float _current;
+        float _currentShunt;
+        boolean _error;
+        boolean startConversion(int channel, boolean doTemperature);
+        boolean selectChannel(int channel);
+        void writePage(int page, uint8_t *data);
+        boolean readPage(int page, uint8_t *data);
+};
+
+#endif