blob: 3eb4626dc172518ea832894e7ad2cf0e34c7ac62 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/***************************************************************************
* Example sketch for the ADS1115_WE library
*
* This sketch shows how you can use the conversion ready bit with the isBusy function.
* This does not work in the continous mode.
*
* Further information can be found on:
* https://wolles-elektronikkiste.de/ads1115
*
***************************************************************************/
#include<ADS1115_WE.h>
#include<Wire.h>
#define I2C_ADDRESS 0x48
ADS1115_WE adc(I2C_ADDRESS);
// ADS1115_WE adc = ADS1115_WE(); // Alternative: uses default address 0x48
void setup() {
Wire.begin();
Serial.begin(9600);
if(!adc.init()){
Serial.println("ADS1115 not connected!");
}
/* 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
*/
adc.setVoltageRange_mV(ADS1115_RANGE_6144); //comment line/change parameter to change 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
*/
adc.setCompareChannels(ADS1115_COMP_0_GND); //comment line/change parameter to change channels
/* 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_3 -> after 3 conversions
* ADS1115_DISABLE_ALERT -> disable comparator / alert pin (default)
*/
//adc.setAlertPinMode(ADS1115_ASSERT_AFTER_1); //uncomment if you want to change the default
/* 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
*/
adc.setConvRate(ADS1115_8_SPS); //comment line/change parameter to change SPS
/* Set continous or single shot mode:
*
* ADS1115_CONTINOUS -> continous mode
* ADS1115_SINGLE -> single shot mode (default)
*/
//adc.setMeasureMode(ADS1115_CONTINOUS); //continous mode does not work with conversion ready (isBusy)
/* 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
*
*/
//adc.setAlertModeAndLimit_V(ADS1115_MAX_LIMIT, 3.0, 1.5); //uncomment if you want to change the default
/* 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
*/
//adc.setAlertLatch(ADS1115_LATCH_ENABLED); //uncomment if you want to change the default
/* 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
*/
//adc.setAlertPol(ADS1115_ACT_LOW); //uncomment if you want to change the default
/* With this function the alert pin will be active, when a conversion is ready.
* In order to deactivate, use the setAlertLimit_V function
*/
//adc.setAlertPinToConversionReady(); //uncomment if you want to change the default
Serial.println("ADS1115 Example Sketch - Single Shot, Conversion Ready (isBusy) controlled");
Serial.println();
}
void loop() {
float voltage = 0.0;
for(int i=0; i<32; i++){ // counter is 32, conversion rate is 8 SPS --> 4s
adc.startSingleMeasurement();
while(adc.isBusy()){}
}
voltage = adc.getResult_V(); // alternative: getResult_mV for Millivolt
Serial.print("Channel 0 vs GND [V]: ");
Serial.println(voltage);
Serial.println("-------------------------------");
}
|
