ads1118 component (#5711)

Co-authored-by: Solomon <solomon.gorkhover@finnpartners.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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Solomon 2024-03-10 18:09:05 -04:00 committed by GitHub
parent 89b3bc7d70
commit c52052563f
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@ -22,6 +22,7 @@ esphome/components/ade7880/* @kpfleming
esphome/components/ade7953/* @angelnu
esphome/components/ade7953_i2c/* @angelnu
esphome/components/ade7953_spi/* @angelnu
esphome/components/ads1118/* @solomondg1
esphome/components/ags10/* @mak-42
esphome/components/airthings_ble/* @jeromelaban
esphome/components/airthings_wave_base/* @jeromelaban @kpfleming @ncareau

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@ -0,0 +1,25 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import spi
from esphome.const import CONF_ID
CODEOWNERS = ["@solomondg1"]
DEPENDENCIES = ["spi"]
MULTI_CONF = True
CONF_ADS1118_ID = "ads1118_id"
ads1118_ns = cg.esphome_ns.namespace("ads1118")
ADS1118 = ads1118_ns.class_("ADS1118", cg.Component, spi.SPIDevice)
CONFIG_SCHEMA = cv.Schema(
{
cv.GenerateID(): cv.declare_id(ADS1118),
}
).extend(spi.spi_device_schema(cs_pin_required=True))
async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await cg.register_component(var, config)
await spi.register_spi_device(var, config)

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@ -0,0 +1,126 @@
#include "ads1118.h"
#include "esphome/core/log.h"
namespace esphome {
namespace ads1118 {
static const char *const TAG = "ads1118";
static const uint8_t ADS1118_DATA_RATE_860_SPS = 0b111;
void ADS1118::setup() {
ESP_LOGCONFIG(TAG, "Setting up ads1118");
this->spi_setup();
this->config_ = 0;
// Setup multiplexer
// 0bx000xxxxxxxxxxxx
this->config_ |= ADS1118_MULTIPLEXER_P0_NG << 12;
// Setup Gain
// 0bxxxx000xxxxxxxxx
this->config_ |= ADS1118_GAIN_6P144 << 9;
// Set singleshot mode
// 0bxxxxxxx1xxxxxxxx
this->config_ |= 0b0000000100000000;
// Set data rate - 860 samples per second (we're in singleshot mode)
// 0bxxxxxxxx100xxxxx
this->config_ |= ADS1118_DATA_RATE_860_SPS << 5;
// Set temperature sensor mode - ADC
// 0bxxxxxxxxxxx0xxxx
this->config_ |= 0b0000000000000000;
// Set DOUT pull up - enable
// 0bxxxxxxxxxxxx0xxx
this->config_ |= 0b0000000000001000;
// NOP - must be 01
// 0bxxxxxxxxxxxxx01x
this->config_ |= 0b0000000000000010;
// Not used - can be 0 or 1, lets be positive
// 0bxxxxxxxxxxxxxxx1
this->config_ |= 0b0000000000000001;
}
void ADS1118::dump_config() {
ESP_LOGCONFIG(TAG, "ADS1118:");
LOG_PIN(" CS Pin:", this->cs_);
}
float ADS1118::request_measurement(ADS1118Multiplexer multiplexer, ADS1118Gain gain, bool temperature_mode) {
uint16_t temp_config = this->config_;
// Multiplexer
// 0bxBBBxxxxxxxxxxxx
temp_config &= 0b1000111111111111;
temp_config |= (multiplexer & 0b111) << 12;
// Gain
// 0bxxxxBBBxxxxxxxxx
temp_config &= 0b1111000111111111;
temp_config |= (gain & 0b111) << 9;
if (temperature_mode) {
// Set temperature sensor mode
// 0bxxxxxxxxxxx1xxxx
temp_config |= 0b0000000000010000;
} else {
// Set ADC mode
// 0bxxxxxxxxxxx0xxxx
temp_config &= 0b1111111111101111;
}
// Start conversion
temp_config |= 0b1000000000000000;
this->enable();
this->write_byte16(temp_config);
this->disable();
// about 1.2 ms with 860 samples per second
delay(2);
this->enable();
uint8_t adc_first_byte = this->read_byte();
uint8_t adc_second_byte = this->read_byte();
this->disable();
uint16_t raw_conversion = encode_uint16(adc_first_byte, adc_second_byte);
auto signed_conversion = static_cast<int16_t>(raw_conversion);
if (temperature_mode) {
return (signed_conversion >> 2) * 0.03125f;
} else {
float millivolts;
float divider = 32768.0f;
switch (gain) {
case ADS1118_GAIN_6P144:
millivolts = (signed_conversion * 6144) / divider;
break;
case ADS1118_GAIN_4P096:
millivolts = (signed_conversion * 4096) / divider;
break;
case ADS1118_GAIN_2P048:
millivolts = (signed_conversion * 2048) / divider;
break;
case ADS1118_GAIN_1P024:
millivolts = (signed_conversion * 1024) / divider;
break;
case ADS1118_GAIN_0P512:
millivolts = (signed_conversion * 512) / divider;
break;
case ADS1118_GAIN_0P256:
millivolts = (signed_conversion * 256) / divider;
break;
default:
millivolts = NAN;
}
return millivolts / 1e3f;
}
}
} // namespace ads1118
} // namespace esphome

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@ -0,0 +1,46 @@
#pragma once
#include "esphome/components/spi/spi.h"
#include "esphome/core/component.h"
#include "esphome/core/hal.h"
namespace esphome {
namespace ads1118 {
enum ADS1118Multiplexer {
ADS1118_MULTIPLEXER_P0_N1 = 0b000,
ADS1118_MULTIPLEXER_P0_N3 = 0b001,
ADS1118_MULTIPLEXER_P1_N3 = 0b010,
ADS1118_MULTIPLEXER_P2_N3 = 0b011,
ADS1118_MULTIPLEXER_P0_NG = 0b100,
ADS1118_MULTIPLEXER_P1_NG = 0b101,
ADS1118_MULTIPLEXER_P2_NG = 0b110,
ADS1118_MULTIPLEXER_P3_NG = 0b111,
};
enum ADS1118Gain {
ADS1118_GAIN_6P144 = 0b000,
ADS1118_GAIN_4P096 = 0b001,
ADS1118_GAIN_2P048 = 0b010,
ADS1118_GAIN_1P024 = 0b011,
ADS1118_GAIN_0P512 = 0b100,
ADS1118_GAIN_0P256 = 0b101,
};
class ADS1118 : public Component,
public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_TRAILING,
spi::DATA_RATE_1MHZ> {
public:
ADS1118() = default;
void setup() override;
void dump_config() override;
float get_setup_priority() const override { return setup_priority::DATA; }
/// Helper method to request a measurement from a sensor.
float request_measurement(ADS1118Multiplexer multiplexer, ADS1118Gain gain, bool temperature_mode);
protected:
uint16_t config_{0};
};
} // namespace ads1118
} // namespace esphome

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@ -0,0 +1,97 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import sensor, voltage_sampler
from esphome.const import (
CONF_GAIN,
CONF_MULTIPLEXER,
DEVICE_CLASS_VOLTAGE,
DEVICE_CLASS_TEMPERATURE,
STATE_CLASS_MEASUREMENT,
UNIT_CELSIUS,
UNIT_VOLT,
CONF_TYPE,
)
from .. import ads1118_ns, ADS1118, CONF_ADS1118_ID
AUTO_LOAD = ["voltage_sampler"]
DEPENDENCIES = ["ads1118"]
ADS1118Multiplexer = ads1118_ns.enum("ADS1118Multiplexer")
MUX = {
"A0_A1": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P0_N1,
"A0_A3": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P0_N3,
"A1_A3": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P1_N3,
"A2_A3": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P2_N3,
"A0_GND": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P0_NG,
"A1_GND": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P1_NG,
"A2_GND": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P2_NG,
"A3_GND": ADS1118Multiplexer.ADS1118_MULTIPLEXER_P3_NG,
}
ADS1118Gain = ads1118_ns.enum("ADS1118Gain")
GAIN = {
"6.144": ADS1118Gain.ADS1118_GAIN_6P144,
"4.096": ADS1118Gain.ADS1118_GAIN_4P096,
"2.048": ADS1118Gain.ADS1118_GAIN_2P048,
"1.024": ADS1118Gain.ADS1118_GAIN_1P024,
"0.512": ADS1118Gain.ADS1118_GAIN_0P512,
"0.256": ADS1118Gain.ADS1118_GAIN_0P256,
}
ADS1118Sensor = ads1118_ns.class_(
"ADS1118Sensor",
cg.PollingComponent,
sensor.Sensor,
voltage_sampler.VoltageSampler,
cg.Parented.template(ADS1118),
)
TYPE_ADC = "adc"
TYPE_TEMPERATURE = "temperature"
CONFIG_SCHEMA = cv.typed_schema(
{
TYPE_ADC: sensor.sensor_schema(
ADS1118Sensor,
unit_of_measurement=UNIT_VOLT,
accuracy_decimals=3,
device_class=DEVICE_CLASS_VOLTAGE,
state_class=STATE_CLASS_MEASUREMENT,
)
.extend(
{
cv.GenerateID(CONF_ADS1118_ID): cv.use_id(ADS1118),
cv.Required(CONF_MULTIPLEXER): cv.enum(MUX, upper=True, space="_"),
cv.Required(CONF_GAIN): cv.enum(GAIN, string=True),
}
)
.extend(cv.polling_component_schema("60s")),
TYPE_TEMPERATURE: sensor.sensor_schema(
ADS1118Sensor,
unit_of_measurement=UNIT_CELSIUS,
accuracy_decimals=2,
device_class=DEVICE_CLASS_TEMPERATURE,
state_class=STATE_CLASS_MEASUREMENT,
)
.extend(
{
cv.GenerateID(CONF_ADS1118_ID): cv.use_id(ADS1118),
}
)
.extend(cv.polling_component_schema("60s")),
},
default_type=TYPE_ADC,
)
async def to_code(config):
var = await sensor.new_sensor(config)
await cg.register_component(var, config)
await cg.register_parented(var, config[CONF_ADS1118_ID])
if config[CONF_TYPE] == TYPE_ADC:
cg.add(var.set_multiplexer(config[CONF_MULTIPLEXER]))
cg.add(var.set_gain(config[CONF_GAIN]))
if config[CONF_TYPE] == TYPE_TEMPERATURE:
cg.add(var.set_temperature_mode(True))

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@ -0,0 +1,29 @@
#include "ads1118_sensor.h"
#include "esphome/core/log.h"
namespace esphome {
namespace ads1118 {
static const char *const TAG = "ads1118.sensor";
void ADS1118Sensor::dump_config() {
LOG_SENSOR(" ", "ADS1118 Sensor", this);
ESP_LOGCONFIG(TAG, " Multiplexer: %u", this->multiplexer_);
ESP_LOGCONFIG(TAG, " Gain: %u", this->gain_);
}
float ADS1118Sensor::sample() {
return this->parent_->request_measurement(this->multiplexer_, this->gain_, this->temperature_mode_);
}
void ADS1118Sensor::update() {
float v = this->sample();
if (!std::isnan(v)) {
ESP_LOGD(TAG, "'%s': Got Voltage=%fV", this->get_name().c_str(), v);
this->publish_state(v);
}
}
} // namespace ads1118
} // namespace esphome

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@ -0,0 +1,36 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/voltage_sampler/voltage_sampler.h"
#include "../ads1118.h"
namespace esphome {
namespace ads1118 {
class ADS1118Sensor : public PollingComponent,
public sensor::Sensor,
public voltage_sampler::VoltageSampler,
public Parented<ADS1118> {
public:
void update() override;
void set_multiplexer(ADS1118Multiplexer multiplexer) { this->multiplexer_ = multiplexer; }
void set_gain(ADS1118Gain gain) { this->gain_ = gain; }
void set_temperature_mode(bool temp) { this->temperature_mode_ = temp; }
float sample() override;
void dump_config() override;
protected:
ADS1118Multiplexer multiplexer_{ADS1118_MULTIPLEXER_P0_NG};
ADS1118Gain gain_{ADS1118_GAIN_6P144};
bool temperature_mode_;
};
} // namespace ads1118
} // namespace esphome

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@ -322,6 +322,12 @@ ads1115:
address: 0x48
i2c_id: i2c_bus
ads1118:
spi_id: spi_bus
cs_pin:
allow_other_uses: true
number: GPIO12
as5600:
i2c_id: i2c_bus
dir_pin:
@ -571,6 +577,14 @@ sensor:
state_topic: hi/me
retain: false
availability:
- platform: ads1118
name: ads1118 adc
multiplexer: A0_A1
gain: 1.024
type: adc
- platform: ads1118
name: ads1118 temperature
type: temperature
- platform: as5600
name: AS5600 Position
raw_position: