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LTR390 separate ALS and UV gain and resolution (#7026)

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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
Anton Viktorov 2024-07-12 21:42:41 +00:00 committed by GitHub
parent 8a3f0e3b93
commit feae794787
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GPG Key ID: B5690EEEBB952194
6 changed files with 110 additions and 41 deletions
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2
CODEOWNERS
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@ -214,7 +214,7 @@ esphome/components/lightwaverf/* @max246
esphome/components/lilygo_t5_47/touchscreen/* @jesserockz
esphome/components/lock/* @esphome/core
esphome/components/logger/* @esphome/core
esphome/components/ltr390/* @sjtrny
esphome/components/ltr390/* @latonita @sjtrny
esphome/components/ltr_als_ps/* @latonita
esphome/components/matrix_keypad/* @ssieb
esphome/components/max31865/* @DAVe3283

43
esphome/components/ltr390/ltr390.cpp
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@ -19,6 +19,7 @@ static const uint8_t LTR390_MAIN_STATUS = 0x07;
static const float GAINVALUES[5] = {1.0, 3.0, 6.0, 9.0, 18.0};
static const float RESOLUTIONVALUE[6] = {4.0, 2.0, 1.0, 0.5, 0.25, 0.125};
static const uint8_t RESOLUTION_BITS[6] = {20, 19, 18, 17, 16, 13};
// Request fastest measurement rate - will be slowed by device if conversion rate is slower.
static const float RESOLUTION_SETTING[6] = {0x00, 0x10, 0x20, 0x30, 0x40, 0x50};
@ -74,7 +75,7 @@ void LTR390Component::read_als_() {
uint32_t als = *val;
if (this->light_sensor_ != nullptr) {
float lux = ((0.6 * als) / (GAINVALUES[this->gain_] * RESOLUTIONVALUE[this->res_])) * this->wfac_;
float lux = ((0.6 * als) / (GAINVALUES[this->gain_als_] * RESOLUTIONVALUE[this->res_als_])) * this->wfac_;
this->light_sensor_->publish_state(lux);
}
@ -90,7 +91,7 @@ void LTR390Component::read_uvs_() {
uint32_t uv = *val;
if (this->uvi_sensor_ != nullptr) {
this->uvi_sensor_->publish_state((uv / this->sensitivity_) * this->wfac_);
this->uvi_sensor_->publish_state((uv / this->sensitivity_uv_) * this->wfac_);
}
if (this->uv_sensor_ != nullptr) {
@ -107,9 +108,23 @@ void LTR390Component::read_mode_(int mode_index) {
ctrl[LTR390_CTRL_EN] = true;
this->reg(LTR390_MAIN_CTRL) = ctrl.to_ulong();
uint32_t int_time{0};
// Set gain, resolution and measurement rate
switch (mode) {
case LTR390_MODE_ALS:
this->reg(LTR390_GAIN) = this->gain_als_;
this->reg(LTR390_MEAS_RATE) = RESOLUTION_SETTING[this->res_als_];
int_time = ((uint32_t) RESOLUTIONVALUE[this->res_als_]) * 100;
break;
case LTR390_MODE_UVS:
this->reg(LTR390_GAIN) = this->gain_uv_;
this->reg(LTR390_MEAS_RATE) = RESOLUTION_SETTING[this->res_uv_];
int_time = ((uint32_t) RESOLUTIONVALUE[this->res_uv_]) * 100;
break;
}
// After the sensor integration time do the following
this->set_timeout(((uint32_t) RESOLUTIONVALUE[this->res_]) * 100 + LTR390_WAKEUP_TIME + LTR390_SETTLE_TIME,
[this, mode_index]() {
this->set_timeout(int_time + LTR390_WAKEUP_TIME + LTR390_SETTLE_TIME, [this, mode_index]() {
// Read from the sensor
std::get<1>(this->mode_funcs_[mode_index])();
@ -151,16 +166,10 @@ void LTR390Component::setup() {
return;
}
// Set gain
this->reg(LTR390_GAIN) = gain_;
// Set resolution and measurement rate
this->reg(LTR390_MEAS_RATE) = RESOLUTION_SETTING[this->res_];
// Set sensitivity by linearly scaling against known value in the datasheet
float gain_scale = GAINVALUES[this->gain_] / GAIN_MAX;
float intg_scale = (RESOLUTIONVALUE[this->res_] * 100) / INTG_MAX;
this->sensitivity_ = SENSITIVITY_MAX * gain_scale * intg_scale;
float gain_scale_uv = GAINVALUES[this->gain_uv_] / GAIN_MAX;
float intg_scale_uv = (RESOLUTIONVALUE[this->res_uv_] * 100) / INTG_MAX;
this->sensitivity_uv_ = SENSITIVITY_MAX * gain_scale_uv * intg_scale_uv;
// Set sensor read state
this->reading_ = false;
@ -176,7 +185,13 @@ void LTR390Component::setup() {
}
}
void LTR390Component::dump_config() { LOG_I2C_DEVICE(this); }
void LTR390Component::dump_config() {
LOG_I2C_DEVICE(this);
ESP_LOGCONFIG(TAG, " ALS Gain: X%.0f", GAINVALUES[this->gain_als_]);
ESP_LOGCONFIG(TAG, " ALS Resolution: %u-bit", RESOLUTION_BITS[this->res_als_]);
ESP_LOGCONFIG(TAG, " UV Gain: X%.0f", GAINVALUES[this->gain_uv_]);
ESP_LOGCONFIG(TAG, " UV Resolution: %u-bit", RESOLUTION_BITS[this->res_uv_]);
}
void LTR390Component::update() {
if (!this->reading_ && !mode_funcs_.empty()) {

14
esphome/components/ltr390/ltr390.h
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@ -49,8 +49,10 @@ class LTR390Component : public PollingComponent, public i2c::I2CDevice {
void dump_config() override;
void update() override;
void set_gain_value(LTR390GAIN gain) { this->gain_ = gain; }
void set_res_value(LTR390RESOLUTION res) { this->res_ = res; }
void set_als_gain_value(LTR390GAIN gain) { this->gain_als_ = gain; }
void set_uv_gain_value(LTR390GAIN gain) { this->gain_uv_ = gain; }
void set_als_res_value(LTR390RESOLUTION res) { this->res_als_ = res; }
void set_uv_res_value(LTR390RESOLUTION res) { this->res_uv_ = res; }
void set_wfac_value(float wfac) { this->wfac_ = wfac; }
void set_light_sensor(sensor::Sensor *light_sensor) { this->light_sensor_ = light_sensor; }
@ -71,9 +73,11 @@ class LTR390Component : public PollingComponent, public i2c::I2CDevice {
// a list of modes and corresponding read functions
std::vector<std::tuple<LTR390MODE, std::function<void()>>> mode_funcs_;
LTR390GAIN gain_;
LTR390RESOLUTION res_;
float sensitivity_;
LTR390GAIN gain_als_;
LTR390GAIN gain_uv_;
LTR390RESOLUTION res_als_;
LTR390RESOLUTION res_uv_;
float sensitivity_uv_;
float wfac_;
sensor::Sensor *light_sensor_{nullptr};

40
esphome/components/ltr390/sensor.py
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@ -13,7 +13,7 @@ from esphome.const import (
UNIT_LUX,
)
CODEOWNERS = ["@sjtrny"]
CODEOWNERS = ["@sjtrny", "@latonita"]
DEPENDENCIES = ["i2c"]
ltr390_ns = cg.esphome_ns.namespace("ltr390")
@ -76,8 +76,24 @@ CONFIG_SCHEMA = cv.All(
accuracy_decimals=1,
device_class=DEVICE_CLASS_EMPTY,
),
cv.Optional(CONF_GAIN, default="X18"): cv.enum(GAIN_OPTIONS),
cv.Optional(CONF_RESOLUTION, default=20): cv.enum(RES_OPTIONS),
cv.Optional(CONF_GAIN, default="X18"): cv.Any(
cv.enum(GAIN_OPTIONS),
cv.Schema(
{
cv.Required(CONF_AMBIENT_LIGHT): cv.enum(GAIN_OPTIONS),
cv.Required(CONF_UV): cv.enum(GAIN_OPTIONS),
}
),
),
cv.Optional(CONF_RESOLUTION, default=20): cv.Any(
cv.enum(RES_OPTIONS),
cv.Schema(
{
cv.Required(CONF_AMBIENT_LIGHT): cv.enum(RES_OPTIONS),
cv.Required(CONF_UV): cv.enum(RES_OPTIONS),
}
),
),
cv.Optional(CONF_WINDOW_CORRECTION_FACTOR, default=1.0): cv.float_range(
min=1.0
),
@ -101,11 +117,25 @@ async def to_code(config):
await cg.register_component(var, config)
await i2c.register_i2c_device(var, config)
cg.add(var.set_gain_value(config[CONF_GAIN]))
cg.add(var.set_res_value(config[CONF_RESOLUTION]))
cg.add(var.set_wfac_value(config[CONF_WINDOW_CORRECTION_FACTOR]))
for key, funcName in TYPES.items():
if key in config:
sens = await sensor.new_sensor(config[key])
cg.add(getattr(var, funcName)(sens))
gain_value = config[CONF_GAIN]
if isinstance(gain_value, dict):
cg.add(var.set_als_gain_value(gain_value[CONF_AMBIENT_LIGHT]))
cg.add(var.set_uv_gain_value(gain_value[CONF_UV]))
else:
cg.add(var.set_als_gain_value(gain_value))
cg.add(var.set_uv_gain_value(gain_value))
res_value = config[CONF_RESOLUTION]
if isinstance(res_value, dict):
cg.add(var.set_als_res_value(res_value[CONF_AMBIENT_LIGHT]))
cg.add(var.set_uv_res_value(res_value[CONF_UV]))
else:
cg.add(var.set_als_res_value(res_value))
cg.add(var.set_uv_res_value(res_value))

18
tests/components/ltr390/test.esp32-ard.yaml
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@ -18,3 +18,21 @@ sensor:
window_correction_factor: 1.0
address: 0x53
update_interval: 60s
- platform: ltr390
uv:
name: LTR390 UV
uv_index:
name: LTR390 UVI
light:
name: LTR390 Light
ambient_light:
name: LTR390 ALS
gain:
ambient_light: X9
uv: X3
resolution:
ambient_light: 18
uv: 13
window_correction_factor: 1.0
address: 0x53
update_interval: 60s

4
tests/components/ltr390/test.esp8266-ard.yaml
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@ -13,7 +13,9 @@ sensor:
name: LTR390 Light
ambient_light:
name: LTR390 ALS
gain: X3
gain:
ambient_light: X9
uv: X3
resolution: 18
window_correction_factor: 1.0
address: 0x53