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authorWolfgang (Wolle) Ewald <wolfgang.ewald@wolles-elektronikkiste.de>2020-07-26 16:00:01 +0200
committerGitHub <noreply@github.com>2020-07-26 16:00:01 +0200
commit9999bda7a922e0941cfb87e1f2c9da36a99c09e6 (patch)
tree7a049d579e637c5b98d091e26081565a76a495b3 /src
parentUpdate library.properties (diff)
parentadd travis build (diff)
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Diffstat (limited to '')
-rw-r--r--src/ADS1115_WE.h105
1 files changed, 95 insertions, 10 deletions
diff --git a/src/ADS1115_WE.h b/src/ADS1115_WE.h
index 4af25b1..c5a269a 100644
--- a/src/ADS1115_WE.h
+++ b/src/ADS1115_WE.h
@@ -2,17 +2,17 @@
*
* 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'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_
@@ -30,7 +30,7 @@
#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
+#define ADS1115_HI_THRESH_REG 0x03 //High Threshold Register
/* other */
#define ADS1115_REG_FACTOR 32768
@@ -49,7 +49,7 @@ typedef enum ADS1115_LATCH {
} latch;
typedef enum ADS1115_ALERT_POL {
- ADS1115_ACT_LOW = 0x0000,
+ ADS1115_ACT_LOW = 0x0000,
ADS1115_ACT_HIGH = 0x0008
} alertPol;
@@ -102,28 +102,113 @@ typedef enum ADS1115_STATUS_OR_START{
class ADS1115_WE
{
-public:
+public:
ADS1115_WE(int addr);
- ADS1115_WE(); //sets default I2C Address 0x48
-
+ ADS1115_WE(); // uses default I2C Address 0x48
+
void reset();
bool init();
+
+ /* Set number of conversions after which the alert pin will be active
+ * - or you can disable the alert
+ *
+ * ADS1115_ASSERT_AFTER_1 -> after 1 conversion
+ * ADS1115_ASSERT_AFTER_2 -> after 2 conversions
+ * ADS1115_ASSERT_AFTER_4 -> after 4 conversions
+ * ADS1115_DISABLE_ALERT -> disable comparator // alert pin (default)
+ */
void setAlertPinMode(ADS1115_COMP_QUE mode);
+
+ /* Enable or disable latch. If latch is enabled the alarm pin will be active until the
+ * conversion register is read (getResult functions). If disabled the alarm pin will be
+ * deactivated with next value within limits.
+ *
+ * ADS1115_LATCH_DISABLED (default)
+ * ADS1115_LATCH_ENABLED
+ */
void setAlertLatch(ADS1115_LATCH latch);
+
+ /* Sets the alert pin polarity if active:
+ *
+ * Enable or disable latch. If latch is enabled the alarm pin will be active until the
+ * conversion register is read (getResult functions). If disabled the alarm pin will be
+ * deactivated with next value within limits.
+ *
+ * ADS1115_ACT_LOW -> active low (default)
+ * ADS1115_ACT_HIGH -> active high
+ */
void setAlertPol(ADS1115_ALERT_POL polarity);
+
+ /* Choose maximum limit or maxium and minimum alert limit (window)in Volt - alert pin will
+ * be active when measured values are beyond the maximum limit or outside the window
+ * Upper limit first: setAlertLimit_V(MODE, maximum, minimum)
+ * In max limit mode the minimum value is the limit where the alert pin will be deactivated (if
+ * not latched)
+ *
+ * ADS1115_MAX_LIMIT
+ * ADS1115_WINDOW
+ */
void setAlertModeAndLimit_V(ADS1115_COMP_MODE mode, float hithres, float lothres);
+
+ /* Set the conversion rate in SPS (samples per second)
+ * Options should be self-explaining:
+ *
+ * ADS1115_8_SPS
+ * ADS1115_16_SPS
+ * ADS1115_32_SPS
+ * ADS1115_64_SPS
+ * ADS1115_128_SPS (default)
+ * ADS1115_250_SPS
+ * ADS1115_475_SPS
+ * ADS1115_860_SPS
+ */
void setConvRate(ADS1115_CONV_RATE rate);
+
+ /* Set continous or single shot mode:
+ *
+ * ADS1115_CONTINOUS -> continous mode
+ * ADS1115_SINGLE -> single shot mode (default)
+ */
void setMeasureMode(ADS1115_MEASURE_MODE mode);
+
+ /*
+ * Set the voltage range of the ADC to adjust the gain
+ * Please note that you must not apply more than VDD + 0.3V to the input pins!
+ *
+ * ADS1115_RANGE_6144 -> +/- 6144 mV
+ * ADS1115_RANGE_4096 -> +/- 4096 mV
+ * ADS1115_RANGE_2048 -> +/- 2048 mV (default)
+ * ADS1115_RANGE_1024 -> +/- 1024 mV
+ * ADS1115_RANGE_0512 -> +/- 512 mV
+ * ADS1115_RANGE_0256 -> +/- 256 mV
+ */
void setVoltageRange_mV(ADS1115_RANGE range);
+
+ /* Set the inputs to be compared
+ *
+ * ADS1115_COMP_0_1 -> compares 0 with 1 (default)
+ * ADS1115_COMP_0_3 -> compares 0 with 3
+ * ADS1115_COMP_1_3 -> compares 1 with 3
+ * ADS1115_COMP_2_3 -> compares 2 with 3
+ * ADS1115_COMP_0_GND -> compares 0 with GND
+ * ADS1115_COMP_1_GND -> compares 1 with GND
+ * ADS1115_COMP_2_GND -> compares 2 with GND
+ * ADS1115_COMP_3_GND -> compares 3 with GND
+ */
void setCompareChannels(ADS1115_MUX mux);
+
bool isBusy();
void startSingleMeasurement();
float getResult_V();
float getResult_mV();
+
+ /* With this function the alert pin will be active, when a conversion is ready.
+ * In order to deactivate, use the setAlertLimit_V function
+ */
void setAlertPinToConversionReady();
void clearAlert();
-
-
+
+
private:
uint16_t voltageRange;
ADS1115_MEASURE_MODE deviceMeasureMode;