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_P167_ADS1015.ino
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//#######################################################################################################
//#################################### Plugin 167: ADS1015 I2C 0x48) ###################################
//# Supports slow, purple chinese ADS1015
//# Needs soligen2010/Adafruit_ADS1x15 patched library
//# https://github.com/soligen2010/Adafruit_ADS1X15
//# WARNING: This plugin can not coexist with ADS1115 plugin!
//#######################################################################################################
#ifdef PLUGIN_BUILD_TESTING
#include <Adafruit_ADS1015.h>
#define ARDUINO_ARCH_ESP8266
#define PLUGIN_167
#define PLUGIN_ID_167 167
#define PLUGIN_NAME_167 "Analog input - ADS1015"
#define PLUGIN_VALUENAME1_167 "AIN0"
#define PLUGIN_VALUENAME2_167 "AIN1"
#define PLUGIN_VALUENAME3_167 "AIN2"
#define PLUGIN_VALUENAME4_167 "AIN3"
boolean Plugin_167_init = false;
Adafruit_ADS1015 Plugin_167_ads;
static byte Plugin_167_muxes[5];
boolean Plugin_167(byte function, struct EventStruct *event, String& string)
{
boolean success = false;
switch (function)
{
case PLUGIN_DEVICE_ADD:
{
Device[++deviceCount].Number = PLUGIN_ID_167;
Device[deviceCount].Type = DEVICE_TYPE_I2C;
Device[deviceCount].VType = SENSOR_TYPE_SINGLE;
Device[deviceCount].Ports = 0;
Device[deviceCount].PullUpOption = false;
Device[deviceCount].InverseLogicOption = false;
Device[deviceCount].FormulaOption = true;
Device[deviceCount].ValueCount = 4;
Device[deviceCount].SendDataOption = true;
Device[deviceCount].TimerOption = true;
Device[deviceCount].GlobalSyncOption = false;
break;
}
case PLUGIN_GET_DEVICENAME:
{
string = F(PLUGIN_NAME_167);
break;
}
case PLUGIN_GET_DEVICEVALUENAMES:
{
strcpy_P(ExtraTaskSettings.TaskDeviceValueNames[0], PSTR(PLUGIN_VALUENAME1_167));
strcpy_P(ExtraTaskSettings.TaskDeviceValueNames[1], PSTR(PLUGIN_VALUENAME2_167));
strcpy_P(ExtraTaskSettings.TaskDeviceValueNames[2], PSTR(PLUGIN_VALUENAME3_167));
strcpy_P(ExtraTaskSettings.TaskDeviceValueNames[3], PSTR(PLUGIN_VALUENAME4_167));
break;
}
case PLUGIN_WEBFORM_LOAD:
{
#define ADS1015_I2C_OPTION 4
byte addr = Settings.TaskDevicePluginConfig[event->TaskIndex][0];
int optionValues[ADS1015_I2C_OPTION] = { 0x48, 0x49, 0x4A, 0x4B };
addFormSelectorI2C(string, F("plugin_167_i2c"), ADS1015_I2C_OPTION, optionValues, addr);
addFormSubHeader(string, F("Input"));
#define ADS1015_PGA_OPTION 6
byte pga = Settings.TaskDevicePluginConfig[event->TaskIndex][1];
String pgaOptions[ADS1015_PGA_OPTION] = {
F("2/3x gain (FS=6.144V)"),
F("1x gain (FS=4.096V)"),
F("2x gain (FS=2.048V)"),
F("4x gain (FS=1.024V)"),
F("8x gain (FS=0.512V)"),
F("16x gain (FS=0.256V)")
};
addFormSelector(string, F("Gain"), F("plugin_167_gain"), ADS1015_PGA_OPTION, pgaOptions, NULL, pga);
addFormSubHeader(string, F("Used analog input pins:"));
addFormCheckBox(string, F("AIN0"), F("plugin_167_ain0"), Settings.TaskDevicePluginConfig[event->TaskIndex][2]);
addFormCheckBox(string, F("AIN1"), F("plugin_167_ain1"), Settings.TaskDevicePluginConfig[event->TaskIndex][3]);
addFormCheckBox(string, F("AIN2"), F("plugin_167_ain2"), Settings.TaskDevicePluginConfig[event->TaskIndex][4]);
addFormCheckBox(string, F("AIN3"), F("plugin_167_ain3"), Settings.TaskDevicePluginConfig[event->TaskIndex][5]);
success = true;
break;
}
case PLUGIN_WEBFORM_SAVE:
{
Settings.TaskDevicePluginConfig[event->TaskIndex][0] = getFormItemInt(F("plugin_167_i2c"));
Settings.TaskDevicePluginConfig[event->TaskIndex][1] = getFormItemInt(F("plugin_167_gain"));
Settings.TaskDevicePluginConfig[event->TaskIndex][2] = isFormItemChecked(F("plugin_167_ain0"));
Settings.TaskDevicePluginConfig[event->TaskIndex][3] = isFormItemChecked(F("plugin_167_ain1"));
Settings.TaskDevicePluginConfig[event->TaskIndex][4] = isFormItemChecked(F("plugin_167_ain2"));
Settings.TaskDevicePluginConfig[event->TaskIndex][5] = isFormItemChecked(F("plugin_167_ain3"));
success = true;
break;
}
case PLUGIN_INIT:
{
Plugin_167_ads = Adafruit_ADS1015(Settings.TaskDevicePluginConfig[event->TaskIndex][0]);
Plugin_167_ads.begin(Settings.Pin_i2c_sda, Settings.Pin_i2c_scl);
Plugin_167_ads.setSPS(ADS1015_DR_128SPS);
Plugin_167_init = true;
byte pga = Settings.TaskDevicePluginConfig[event->TaskIndex][1];
switch (pga)
{
case 0:
{
Plugin_167_ads.setGain(GAIN_TWOTHIRDS); // 2/3x gain +/- 6.144V 1 bit = 3mV 0.1875mV (default)
break;
}
case 1:
{
Plugin_167_ads.setGain(GAIN_ONE); // 1x gain +/- 4.096V 1 bit = 2mV 0.125mV
break;
}
case 2:
{
Plugin_167_ads.setGain(GAIN_TWO); // 2x gain +/- 2.048V 1 bit = 1mV 0.0625mV
break;
}
case 3:
{
Plugin_167_ads.setGain(GAIN_FOUR); // 4x gain +/- 1.024V 1 bit = 0.5mV 0.03125mV
break;
}
case 4:
{
Plugin_167_ads.setGain(GAIN_EIGHT); // 8x gain +/- 0.512V 1 bit = 0.25mV 0.015625mV
break;
}
case 5:
{
Plugin_167_ads.setGain(GAIN_SIXTEEN);
break;
}
}
byte apin = 0;
Plugin_167_muxes[4] = 0;
while (apin < 4) {
if (Settings.TaskDevicePluginConfig[event->TaskIndex][2 + apin] == true) {
Plugin_167_muxes[apin] = 1;
Plugin_167_muxes[4] = Plugin_167_muxes[4] + 1;
} else {
Plugin_167_muxes[apin] = 0;
}
apin++;
}
success = true;
break;
}
case PLUGIN_READ:
{
int16_t value = 0;
int16_t value2 = 0;
int16_t value3 = 0;
int16_t valueref = 0;
String log = F("ADS1015 : ");
if (Plugin_167_muxes[4] > 0) { // only start if at least one analog pin selected
log += F("Analog value:");
if (Plugin_167_muxes[4] == 1) { // only one channel
byte apin = 0;
while (apin < 4) {
if (Plugin_167_muxes[apin] == 1) {
value = Plugin_167_ads.readADC_SingleEnded(apin);
UserVar[event->BaseVarIndex + apin] = (float)value;
log += F(" A");
log += apin;
log = F("=");
log += value;
}
apin++;
}
} else { // multiple channels selected
if (Plugin_167_muxes[1] == 1) { // mux1 in list
valueref = Plugin_167_ads.readADC_SingleEnded(1); // fetch AIN1 as reference
log += F(" A1=");
log += valueref;
if (Plugin_167_muxes[0] == 1) {
value = Plugin_167_ads.readADC_Differential_0_1(); // calc diff
log += F(" A0-A1=");
log += value;
value2 = Plugin_167_ads.readADC_SingleEnded(0); // fetch AIN0
log += F(" A0=");
log += value2;
if (valueref == 0) { // if reference corrupt avoid
if (value2 != 0) {
valueref = value2 - value; // recalc from AIN0
} else {
valueref = UserVar[event->BaseVarIndex + 1]; // worst case=use prev
}
} else {
if ((value2 != 0) && (valueref != value2) && (valueref > 0) && (abs(valueref - value2 + value) < (valueref / 5)) ) { // if ain1 and ain0 is valid, calc avg
valueref = (float)((valueref + value2 - value) / 2);
}
}
if (abs(valueref - value2 + value) < (valueref / 5)) {
UserVar[event->BaseVarIndex] = valueref + value;
} else {
UserVar[event->BaseVarIndex] = value2;
}
log += F(" A1=");
log += valueref;
log += F(" A0=");
log += UserVar[event->BaseVarIndex];
}
if (Plugin_167_muxes[3] == 1) {
value = Plugin_167_ads.readADC_Differential_1_3(); // calc diff
log += F(" A1-A3=");
log += value;
value3 = Plugin_167_ads.readADC_SingleEnded(3); // fetch AIN3
log += F(" A3=");
log += value3;
if (valueref == 0) { // if reference corrupt avoid
if (value3 != 0) {
valueref = value3 + value; // recalc from AIN3
} else {
valueref = UserVar[event->BaseVarIndex + 1]; // worst case=use prev
}
} else {
if ((value3 != 0) && (valueref != value3) && (valueref > 0) && (abs(valueref - value3 - value) < (valueref / 5)) ) { // if ain1 and ain3 is valid, calc avg
valueref = (float)((valueref + value3 + value) / 2);
}
}
if (abs(valueref - value3 - value) < (valueref / 5)) {
UserVar[event->BaseVarIndex + 3] = valueref - value;
} else {
UserVar[event->BaseVarIndex + 3] = value3;
}
log += F(" A1=");
log += valueref;
log += F(" A3=");
log += UserVar[event->BaseVarIndex + 3];
}
if (Plugin_167_muxes[2] == 1) {
value = Plugin_167_ads.readADC_SingleEnded(2);
UserVar[event->BaseVarIndex + 2] = (float)value;
log += F(" A2=");
log += UserVar[event->BaseVarIndex + 2];
}
UserVar[event->BaseVarIndex + 1] = (float)valueref;
value = Plugin_167_ads.readADC_SingleEnded(1); // fetch AIN1 to memory - last reading sometime arrives in the next read cycle as result for any channel
} else { // mux1 not in list
if (Plugin_167_muxes[3] == 1) { // mux3 in list
valueref = Plugin_167_ads.readADC_SingleEnded(3); // fetch AIN3 as reference
log += F(" A3=");
log += valueref;
if (Plugin_167_muxes[0] == 1) {
value = Plugin_167_ads.readADC_Differential_0_3(); // calc diff
value2 = Plugin_167_ads.readADC_SingleEnded(0); // fetch AIN0
log += F(" A0-A3=");
log += value;
log += F(" A0=");
log += value2;
if (valueref == 0) { // if reference corrupt avoid
if (value2 != 0) {
valueref = value2 - value; // recalc from AIN0
} else {
valueref = UserVar[event->BaseVarIndex + 3]; // worst case=use prev
}
} else {
if ((value2 != 0) && (valueref != value2) && (valueref > 0) && (abs(valueref - value2 + value) < (valueref / 5)) ) { // if ain3 and ain0 is valid, calc avg
valueref = (float)((valueref + value2 - value) / 2);
}
}
if (abs(valueref - value2 + value) < (valueref / 5)) {
UserVar[event->BaseVarIndex] = valueref + value;
} else {
UserVar[event->BaseVarIndex] = value2;
}
log += F(" A3=");
log += valueref;
log += F(" A0=");
log += UserVar[event->BaseVarIndex];
}
if (Plugin_167_muxes[2] == 1) {
value = Plugin_167_ads.readADC_Differential_2_3(); // calc diff
value2 = Plugin_167_ads.readADC_SingleEnded(2); // fetch AIN2
log += F(" A2-A3=");
log += value;
log += F(" A2=");
log += value2;
if (valueref == 0) { // if reference corrupt avoid
if (value2 != 0) {
valueref = value2 - value; // recalc from AIN2
} else {
valueref = UserVar[event->BaseVarIndex + 3]; // worst case=use prev
}
} else {
if ((value2 != 0) && (valueref != value2) && (valueref > 0) && (abs(valueref - value2 + value) < (valueref / 5)) ) { // if ain3 and ain2 is valid, calc avg
valueref = (float)((valueref + value2 - value) / 2);
}
}
if (abs(valueref - value2 + value) < (valueref / 5)) {
UserVar[event->BaseVarIndex + 2] = valueref + value;
} else {
UserVar[event->BaseVarIndex + 2] = value2;
}
log += F(" A3=");
log += valueref;
log += F(" A2=");
log += UserVar[event->BaseVarIndex + 2];
}
UserVar[event->BaseVarIndex + 3] = (float)valueref;
value = Plugin_167_ads.readADC_SingleEnded(3); // fetch AIN3 to memory
} else { // end of mux3
if (Plugin_167_muxes[0] == 1) { // mux0 in list
value = Plugin_167_ads.readADC_SingleEnded(0); // fetch AIN0 as reference
UserVar[event->BaseVarIndex] = (float)value;
log += F(" A0=");
log += value;
value = Plugin_167_ads.readADC_SingleEnded(2);
UserVar[event->BaseVarIndex + 2] = (float)value;
log += F(" A2=");
log += value;
value = Plugin_167_ads.readADC_SingleEnded(0); // fetch AIN0 to memory
}
} // end of not mux3
} // end of not mux1
}
}
addLog(LOG_LEVEL_INFO, log);
success = true;
break;
}
}
return success;
}
#endif