1 files changed, 137 insertions, 0 deletions

diff --git a/src/ADS1115_WE.h b/src/ADS1115_WE.h
index 8b13789..4a671d4 100644
--- a/src/ADS1115_WE.h
+++ b/src/ADS1115_WE.h
@@ -1 +1,138 @@
+/******************************************************************************
+ *
+ * This is a library for the ADS1115 A/D Converter
+ *
+ * You'll find several example sketches which should enable you to use the library. 
+ *
+ * You are free to use it, change it or build on it. In case you like it, it would
+ * be cool if you give it a star.
+ *
+ * If you find bugs, please inform me!
+ * 
+ * Written by Wolfgang (Wolle) Ewald
+ * https://wolles-elektronikkiste.de
+ *
+ * 
+ ******************************************************************************/
+
+#ifndef ADS1115_WE_H_
+#define ADS1115_WE_H_
+
+#if (ARDUINO >= 100)
+ #include "Arduino.h"
+#else
+ #include "WProgram.h"
+#endif
+
+#include <Wire.h>
+
+/* registers */
+#define ADS1115_CONV_REG 		0x00 //Conversion Register
+#define ADS1115_CONFIG_REG    	0x01 //Configuration Register
+#define ADS1115_LO_THRESH_REG   0x02 //Low Threshold Register
+#define ADS1115_HI_THRESH_REG   0x03 //High Threshold Register 
+
+/* other */
+#define ADS1115_REG_FACTOR 32768
+#define ADS1115_REG_RESET_VAL 0x8583
+
+typedef enum ADS1115_COMP_QUE {
+	ADS1115_ASSERT_AFTER_1 = 0x0000,
+	ADS1115_ASSERT_AFTER_2 = 0x0001,
+	ADS1115_ASSERT_AFTER_3 = 0x0002,
+	ADS1115_DISABLE_ALERT  = 0x0003
+} compQue;
+
+typedef enum ADS1115_LATCH {
+	ADS1115_LATCH_DISABLED = 0x0000,
+	ADS1115_LATCH_ENABLED  = 0x0004,
+} latch;
+
+typedef enum ADS1115_ALERT_POL {
+	ADS1115_ACT_LOW  = 0x0000,   
+	ADS1115_ACT_HIGH = 0x0008
+} alertPol;
+
+typedef enum ADS1115_COMP_MODE{
+	ADS1115_MAX_LIMIT = 0x0000,
+	ADS1115_WINDOW    = 0x0010
+} compMode;
+
+typedef enum ADS1115_CONV_RATE{
+	ADS1115_8_SPS	= 0x0000,
+	ADS1115_16_SPS	= 0x0020,
+	ADS1115_32_SPS	= 0x0040,
+	ADS1115_64_SPS	= 0x0050,
+	ADS1115_128_SPS	= 0x0080,
+	ADS1115_250_SPS	= 0x00A0,
+	ADS1115_475_SPS	= 0x00C0,
+	ADS1115_860_SPS	= 0x00E0
+} convRate;
+
+typedef enum ADS1115_MEASURE_MODE{
+	ADS1115_CONTINOUS = 0x0000,
+	ADS1115_SINGLE    = 0x0100
+} measureMode;
+
+typedef enum ADS1115_RANGE{
+	ADS1115_RANGE_6144	= 0x0000,
+	ADS1115_RANGE_4096	= 0x0200,
+	ADS1115_RANGE_2048  = 0x0400,
+	ADS1115_RANGE_1024	= 0x0600,
+	ADS1115_RANGE_0512	= 0x0800,
+	ADS1115_RANGE_0256	= 0x0A00,
+} range;
+
+typedef enum ADS1115_MUX{
+	ADS1115_COMP_0_1   = 0x0000,
+	ADS1115_COMP_0_3   = 0x1000,
+	ADS1115_COMP_1_3   = 0x2000,
+	ADS1115_COMP_2_3   = 0x3000,
+	ADS1115_COMP_0_GND = 0x4000,
+	ADS1115_COMP_1_GND = 0x5000,
+	ADS1115_COMP_2_GND = 0x6000,
+	ADS1115_COMP_3_GND = 0x7000
+} mux;
+
+typedef enum ADS1115_STATUS_OR_START{
+	ADS1115_BUSY 		  = 0x0000,
+	ADS1115_START_ISREADY = 0x8000
+} statusOrStart;
+
+
+class ADS1115_WE
+{
+public:	
+	ADS1115_WE(int addr);
+	ADS1115_WE();			//sets default I2C Address 0x48
+  
+	void reset();
+	bool init();
+	void setAlertPinMode(ADS1115_COMP_QUE mode);
+	void setAlertLatch(ADS1115_LATCH latch);
+	void setAlertPol(ADS1115_ALERT_POL polarity);
+	void setAlertModeAndLimit_V(ADS1115_COMP_MODE mode, float hithres, float lothres);
+	void setConvRate(ADS1115_CONV_RATE rate);
+	void setMeasureMode(ADS1115_MEASURE_MODE mode);
+	void setVoltageRange_mV(ADS1115_RANGE range);
+	void setCompareChannels(ADS1115_MUX mux);
+	bool isBusy();
+	void startSingleMeasurement();
+	float getResult_V();
+	float getResult_mV();
+	void setAlertPinToConversionReady();
+	void unlatchAlertPin();
+	
+		
+private:
+	uint16_t voltageRange;
+	ADS1115_MEASURE_MODE deviceMeasureMode;
+	int i2cAddress;
+	int16_t calcLimit(float rawLimit);
+	uint8_t writeRegister(uint8_t reg, uint16_t val);
+	uint16_t readRegister(uint8_t reg);
+
+};
+
+#endif