Add support for VEML3235 lux sensor (#5959)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
Keith Burzinski 2024-01-17 00:50:53 -06:00 committed by GitHub
parent 596943b683
commit 0cd232cdf5
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6 changed files with 434 additions and 0 deletions

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@ -362,6 +362,7 @@ esphome/components/ufire_ec/* @pvizeli
esphome/components/ufire_ise/* @pvizeli
esphome/components/ultrasonic/* @OttoWinter
esphome/components/vbus/* @ssieb
esphome/components/veml3235/* @kbx81
esphome/components/version/* @esphome/core
esphome/components/voice_assistant/* @jesserockz
esphome/components/wake_on_lan/* @willwill2will54

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@ -0,0 +1,84 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import i2c, sensor
from esphome.const import (
CONF_GAIN,
CONF_INTEGRATION_TIME,
DEVICE_CLASS_ILLUMINANCE,
STATE_CLASS_MEASUREMENT,
UNIT_LUX,
)
CODEOWNERS = ["@kbx81"]
DEPENDENCIES = ["i2c"]
CONF_AUTO_GAIN = "auto_gain"
CONF_AUTO_GAIN_THRESHOLD_HIGH = "auto_gain_threshold_high"
CONF_AUTO_GAIN_THRESHOLD_LOW = "auto_gain_threshold_low"
CONF_DIGITAL_GAIN = "digital_gain"
veml3235_ns = cg.esphome_ns.namespace("veml3235")
VEML3235Sensor = veml3235_ns.class_(
"VEML3235Sensor", sensor.Sensor, cg.PollingComponent, i2c.I2CDevice
)
VEML3235IntegrationTime = veml3235_ns.enum("VEML3235IntegrationTime")
VEML3235_INTEGRATION_TIMES = {
"50ms": VEML3235IntegrationTime.VEML3235_INTEGRATION_TIME_50MS,
"100ms": VEML3235IntegrationTime.VEML3235_INTEGRATION_TIME_100MS,
"200ms": VEML3235IntegrationTime.VEML3235_INTEGRATION_TIME_200MS,
"400ms": VEML3235IntegrationTime.VEML3235_INTEGRATION_TIME_400MS,
"800ms": VEML3235IntegrationTime.VEML3235_INTEGRATION_TIME_800MS,
}
VEML3235ComponentDigitalGain = veml3235_ns.enum("VEML3235ComponentDigitalGain")
DIGITAL_GAINS = {
"1X": VEML3235ComponentDigitalGain.VEML3235_DIGITAL_GAIN_1X,
"2X": VEML3235ComponentDigitalGain.VEML3235_DIGITAL_GAIN_2X,
}
VEML3235ComponentGain = veml3235_ns.enum("VEML3235ComponentGain")
GAINS = {
"1X": VEML3235ComponentGain.VEML3235_GAIN_1X,
"2X": VEML3235ComponentGain.VEML3235_GAIN_2X,
"4X": VEML3235ComponentGain.VEML3235_GAIN_4X,
"AUTO": VEML3235ComponentGain.VEML3235_GAIN_AUTO,
}
CONFIG_SCHEMA = (
sensor.sensor_schema(
VEML3235Sensor,
unit_of_measurement=UNIT_LUX,
accuracy_decimals=1,
device_class=DEVICE_CLASS_ILLUMINANCE,
state_class=STATE_CLASS_MEASUREMENT,
)
.extend(
{
cv.Optional(CONF_DIGITAL_GAIN, default="1X"): cv.enum(
DIGITAL_GAINS, upper=True
),
cv.Optional(CONF_AUTO_GAIN, default=True): cv.boolean,
cv.Optional(CONF_AUTO_GAIN_THRESHOLD_HIGH, default="90%"): cv.percentage,
cv.Optional(CONF_AUTO_GAIN_THRESHOLD_LOW, default="20%"): cv.percentage,
cv.Optional(CONF_GAIN, default="1X"): cv.enum(GAINS, upper=True),
cv.Optional(CONF_INTEGRATION_TIME, default="50ms"): cv.All(
cv.positive_time_period_milliseconds,
cv.enum(VEML3235_INTEGRATION_TIMES, lower=True),
),
}
)
.extend(cv.polling_component_schema("60s"))
.extend(i2c.i2c_device_schema(0x10))
)
async def to_code(config):
var = await sensor.new_sensor(config)
await cg.register_component(var, config)
await i2c.register_i2c_device(var, config)
cg.add(var.set_auto_gain(config[CONF_AUTO_GAIN]))
cg.add(var.set_auto_gain_threshold_high(config[CONF_AUTO_GAIN_THRESHOLD_HIGH]))
cg.add(var.set_auto_gain_threshold_low(config[CONF_AUTO_GAIN_THRESHOLD_LOW]))
cg.add(var.set_digital_gain(DIGITAL_GAINS[config[CONF_DIGITAL_GAIN]]))
cg.add(var.set_gain(GAINS[config[CONF_GAIN]]))
cg.add(var.set_integration_time(config[CONF_INTEGRATION_TIME]))

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@ -0,0 +1,230 @@
#include "veml3235.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
namespace esphome {
namespace veml3235 {
static const char *const TAG = "veml3235.sensor";
void VEML3235Sensor::setup() {
uint8_t device_id[] = {0, 0};
ESP_LOGCONFIG(TAG, "Setting up VEML3235 '%s'...", this->name_.c_str());
if (!this->refresh_config_reg()) {
ESP_LOGE(TAG, "Unable to write configuration");
this->mark_failed();
return;
}
if ((this->write(&ID_REG, 1, false) != i2c::ERROR_OK) || !this->read_bytes_raw(device_id, 2)) {
ESP_LOGE(TAG, "Unable to read ID");
this->mark_failed();
return;
} else if (device_id[0] != DEVICE_ID) {
ESP_LOGE(TAG, "Incorrect device ID - expected 0x%.2x, read 0x%.2x", DEVICE_ID, device_id[0]);
this->mark_failed();
return;
}
}
bool VEML3235Sensor::refresh_config_reg(bool force_on) {
uint16_t data = this->power_on_ || force_on ? 0 : SHUTDOWN_BITS;
data |= (uint16_t(this->integration_time_ << CONFIG_REG_IT_BIT));
data |= (uint16_t(this->digital_gain_ << CONFIG_REG_DG_BIT));
data |= (uint16_t(this->gain_ << CONFIG_REG_G_BIT));
data |= 0x1; // mandatory 1 here per RM
ESP_LOGVV(TAG, "Writing 0x%.4x to register 0x%.2x", data, CONFIG_REG);
return this->write_byte_16(CONFIG_REG, data);
}
float VEML3235Sensor::read_lx_() {
if (!this->power_on_) { // if off, turn on
if (!this->refresh_config_reg(true)) {
ESP_LOGW(TAG, "Turning on failed");
this->status_set_warning();
return NAN;
}
delay(4); // from RM: a wait time of 4 ms should be observed before the first measurement is picked up, to allow
// for a correct start of the signal processor and oscillator
}
uint8_t als_regs[] = {0, 0};
if ((this->write(&ALS_REG, 1, false) != i2c::ERROR_OK) || !this->read_bytes_raw(als_regs, 2)) {
this->status_set_warning();
return NAN;
}
this->status_clear_warning();
float als_raw_value_multiplier = LUX_MULTIPLIER_BASE;
uint16_t als_raw_value = encode_uint16(als_regs[1], als_regs[0]);
// determine multiplier value based on gains and integration time
if (this->digital_gain_ == VEML3235_DIGITAL_GAIN_1X) {
als_raw_value_multiplier *= 2;
}
switch (this->gain_) {
case VEML3235_GAIN_1X:
als_raw_value_multiplier *= 4;
break;
case VEML3235_GAIN_2X:
als_raw_value_multiplier *= 2;
break;
default:
break;
}
switch (this->integration_time_) {
case VEML3235_INTEGRATION_TIME_50MS:
als_raw_value_multiplier *= 16;
break;
case VEML3235_INTEGRATION_TIME_100MS:
als_raw_value_multiplier *= 8;
break;
case VEML3235_INTEGRATION_TIME_200MS:
als_raw_value_multiplier *= 4;
break;
case VEML3235_INTEGRATION_TIME_400MS:
als_raw_value_multiplier *= 2;
break;
default:
break;
}
// finally, determine and return the actual lux value
float lx = float(als_raw_value) * als_raw_value_multiplier;
ESP_LOGVV(TAG, "'%s': ALS raw = %u, multiplier = %.5f", this->get_name().c_str(), als_raw_value,
als_raw_value_multiplier);
ESP_LOGD(TAG, "'%s': Illuminance = %.4flx", this->get_name().c_str(), lx);
if (!this->power_on_) { // turn off if required
if (!this->refresh_config_reg()) {
ESP_LOGW(TAG, "Turning off failed");
this->status_set_warning();
}
}
if (this->auto_gain_) {
this->adjust_gain_(als_raw_value);
}
return lx;
}
void VEML3235Sensor::adjust_gain_(const uint16_t als_raw_value) {
if ((als_raw_value > UINT16_MAX * this->auto_gain_threshold_low_) &&
(als_raw_value < UINT16_MAX * this->auto_gain_threshold_high_)) {
return;
}
if (als_raw_value >= UINT16_MAX * 0.9) { // over-saturated, reset all gains and start over
this->digital_gain_ = VEML3235_DIGITAL_GAIN_1X;
this->gain_ = VEML3235_GAIN_1X;
this->integration_time_ = VEML3235_INTEGRATION_TIME_50MS;
this->refresh_config_reg();
return;
}
if (this->gain_ != VEML3235_GAIN_4X) { // increase gain if possible
switch (this->gain_) {
case VEML3235_GAIN_1X:
this->gain_ = VEML3235_GAIN_2X;
break;
case VEML3235_GAIN_2X:
this->gain_ = VEML3235_GAIN_4X;
break;
default:
break;
}
this->refresh_config_reg();
return;
}
// gain is maxed out; reset it and try to increase digital gain
if (this->digital_gain_ != VEML3235_DIGITAL_GAIN_2X) { // increase digital gain if possible
this->digital_gain_ = VEML3235_DIGITAL_GAIN_2X;
this->gain_ = VEML3235_GAIN_1X;
this->refresh_config_reg();
return;
}
// digital gain is maxed out; reset it and try to increase integration time
if (this->integration_time_ != VEML3235_INTEGRATION_TIME_800MS) { // increase integration time if possible
switch (this->integration_time_) {
case VEML3235_INTEGRATION_TIME_50MS:
this->integration_time_ = VEML3235_INTEGRATION_TIME_100MS;
break;
case VEML3235_INTEGRATION_TIME_100MS:
this->integration_time_ = VEML3235_INTEGRATION_TIME_200MS;
break;
case VEML3235_INTEGRATION_TIME_200MS:
this->integration_time_ = VEML3235_INTEGRATION_TIME_400MS;
break;
case VEML3235_INTEGRATION_TIME_400MS:
this->integration_time_ = VEML3235_INTEGRATION_TIME_800MS;
break;
default:
break;
}
this->digital_gain_ = VEML3235_DIGITAL_GAIN_1X;
this->gain_ = VEML3235_GAIN_1X;
this->refresh_config_reg();
return;
}
}
void VEML3235Sensor::dump_config() {
uint8_t digital_gain = 1;
uint8_t gain = 1;
uint16_t integration_time = 0;
if (this->digital_gain_ == VEML3235_DIGITAL_GAIN_2X) {
digital_gain = 2;
}
switch (this->gain_) {
case VEML3235_GAIN_2X:
gain = 2;
break;
case VEML3235_GAIN_4X:
gain = 4;
break;
default:
break;
}
switch (this->integration_time_) {
case VEML3235_INTEGRATION_TIME_50MS:
integration_time = 50;
break;
case VEML3235_INTEGRATION_TIME_100MS:
integration_time = 100;
break;
case VEML3235_INTEGRATION_TIME_200MS:
integration_time = 200;
break;
case VEML3235_INTEGRATION_TIME_400MS:
integration_time = 400;
break;
case VEML3235_INTEGRATION_TIME_800MS:
integration_time = 800;
break;
default:
break;
}
LOG_SENSOR("", "VEML3235", this);
LOG_I2C_DEVICE(this);
if (this->is_failed()) {
ESP_LOGE(TAG, "Communication failed");
}
LOG_UPDATE_INTERVAL(this);
ESP_LOGCONFIG(TAG, " Auto-gain enabled: %s", YESNO(this->auto_gain_));
if (this->auto_gain_) {
ESP_LOGCONFIG(TAG, " Auto-gain upper threshold: %f%%", this->auto_gain_threshold_high_ * 100.0);
ESP_LOGCONFIG(TAG, " Auto-gain lower threshold: %f%%", this->auto_gain_threshold_low_ * 100.0);
ESP_LOGCONFIG(TAG, " Values below will be used as initial values only");
}
ESP_LOGCONFIG(TAG, " Digital gain: %uX", digital_gain);
ESP_LOGCONFIG(TAG, " Gain: %uX", gain);
ESP_LOGCONFIG(TAG, " Integration time: %ums", integration_time);
}
} // namespace veml3235
} // namespace esphome

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@ -0,0 +1,109 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/core/hal.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/i2c/i2c.h"
namespace esphome {
namespace veml3235 {
// Register IDs/locations
//
static const uint8_t CONFIG_REG = 0x00;
static const uint8_t W_REG = 0x04;
static const uint8_t ALS_REG = 0x05;
static const uint8_t ID_REG = 0x09;
// Bit offsets within CONFIG_REG
//
static const uint8_t CONFIG_REG_IT_BIT = 12;
static const uint8_t CONFIG_REG_DG_BIT = 5;
static const uint8_t CONFIG_REG_G_BIT = 3;
// Other important constants
//
static const uint8_t DEVICE_ID = 0x35;
static const uint16_t SHUTDOWN_BITS = 0x0018;
// Base multiplier value for lux computation
//
static const float LUX_MULTIPLIER_BASE = 0.00213;
// Enum for conversion/integration time settings for the VEML3235.
//
// Specific values of the enum constants are register values taken from the VEML3235 datasheet.
// Longer times mean more accurate results, but will take more energy/more time.
//
enum VEML3235ComponentIntegrationTime {
VEML3235_INTEGRATION_TIME_50MS = 0b000,
VEML3235_INTEGRATION_TIME_100MS = 0b001,
VEML3235_INTEGRATION_TIME_200MS = 0b010,
VEML3235_INTEGRATION_TIME_400MS = 0b011,
VEML3235_INTEGRATION_TIME_800MS = 0b100,
};
// Enum for digital gain settings for the VEML3235.
// Higher values are better for low light situations, but can increase noise.
//
enum VEML3235ComponentDigitalGain {
VEML3235_DIGITAL_GAIN_1X = 0b0,
VEML3235_DIGITAL_GAIN_2X = 0b1,
};
// Enum for gain settings for the VEML3235.
// Higher values are better for low light situations, but can increase noise.
//
enum VEML3235ComponentGain {
VEML3235_GAIN_1X = 0b00,
VEML3235_GAIN_2X = 0b01,
VEML3235_GAIN_4X = 0b11,
};
class VEML3235Sensor : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
public:
void setup() override;
void dump_config() override;
void update() override { this->publish_state(this->read_lx_()); }
float get_setup_priority() const override { return setup_priority::DATA; }
// Used by ESPHome framework. Does NOT actually set the value on the device.
void set_auto_gain(bool auto_gain) { this->auto_gain_ = auto_gain; }
void set_auto_gain_threshold_high(float auto_gain_threshold_high) {
this->auto_gain_threshold_high_ = auto_gain_threshold_high;
}
void set_auto_gain_threshold_low(float auto_gain_threshold_low) {
this->auto_gain_threshold_low_ = auto_gain_threshold_low;
}
void set_power_on(bool power_on) { this->power_on_ = power_on; }
void set_digital_gain(VEML3235ComponentDigitalGain digital_gain) { this->digital_gain_ = digital_gain; }
void set_gain(VEML3235ComponentGain gain) { this->gain_ = gain; }
void set_integration_time(VEML3235ComponentIntegrationTime integration_time) {
this->integration_time_ = integration_time;
}
bool auto_gain() { return this->auto_gain_; }
float auto_gain_threshold_high() { return this->auto_gain_threshold_high_; }
float auto_gain_threshold_low() { return this->auto_gain_threshold_low_; }
VEML3235ComponentDigitalGain digital_gain() { return this->digital_gain_; }
VEML3235ComponentGain gain() { return this->gain_; }
VEML3235ComponentIntegrationTime integration_time() { return this->integration_time_; }
// Updates the configuration register on the device
bool refresh_config_reg(bool force_on = false);
protected:
float read_lx_();
void adjust_gain_(uint16_t als_raw_value);
bool auto_gain_{true};
bool power_on_{true};
float auto_gain_threshold_high_{0.9};
float auto_gain_threshold_low_{0.2};
VEML3235ComponentDigitalGain digital_gain_{VEML3235_DIGITAL_GAIN_1X};
VEML3235ComponentGain gain_{VEML3235_GAIN_1X};
VEML3235ComponentIntegrationTime integration_time_{VEML3235_INTEGRATION_TIME_50MS};
};
} // namespace veml3235
} // namespace esphome

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@ -1370,6 +1370,16 @@ sensor:
name: tsl2591 calculated_lux
id: tsl2591_cl
i2c_id: i2c_bus
- platform: veml3235
id: veml3235_sensor
name: VEML3235 Light Sensor
i2c_id: i2c_bus
auto_gain: true
auto_gain_threshold_high: 90%
auto_gain_threshold_low: 15%
digital_gain: 1X
gain: 1X
integration_time: 50ms
- platform: tee501
name: Office Temperature 3
address: 0x48