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Code Issues Releases Wiki Activity

BH1750 Measurement time (#997)

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* BH1750 Measurement time

Fixes https://github.com/esphome/feature-requests/issues/148

* lint

* add test

Co-authored-by: Otto Winter <otto@otto-winter.com>
Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>
This commit is contained in:
rradar
2020-05-29 03:10:34 +01:00
committed by GitHub
parent 7e4d12f880
commit d1f4c2ab57
4 changed files with 17 additions and 1 deletions
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11
esphome/components/bh1750/bh1750.cpp
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@@ -7,6 +7,8 @@ namespace bh1750 {
static const char *TAG = "bh1750.sensor";
static const uint8_t BH1750_COMMAND_POWER_ON = 0b00000001;
static const uint8_t BH1750_COMMAND_MT_REG_HI = 0b01000000; // last 3 bits
static const uint8_t BH1750_COMMAND_MT_REG_LO = 0b01100000; // last 5 bits
void BH1750Sensor::setup() {
ESP_LOGCONFIG(TAG, "Setting up BH1750 '%s'...", this->name_.c_str());
@@ -14,7 +16,13 @@ void BH1750Sensor::setup() {
this->mark_failed();
return;
}
uint8_t mtreg_hi = (this->measurement_time_ >> 5) & 0b111;
uint8_t mtreg_lo = (this->measurement_time_ >> 0) & 0b11111;
this->write_bytes(BH1750_COMMAND_MT_REG_HI | mtreg_hi, nullptr, 0);
this->write_bytes(BH1750_COMMAND_MT_REG_LO | mtreg_lo, nullptr, 0);
}
void BH1750Sensor::dump_config() {
LOG_SENSOR("", "BH1750", this);
LOG_I2C_DEVICE(this);
@@ -59,6 +67,7 @@ void BH1750Sensor::update() {
this->set_timeout("illuminance", wait, [this]() { this->read_data_(); });
}
float BH1750Sensor::get_setup_priority() const { return setup_priority::DATA; }
void BH1750Sensor::read_data_() {
uint16_t raw_value;
@@ -68,10 +77,12 @@ void BH1750Sensor::read_data_() {
}
float lx = float(raw_value) / 1.2f;
lx *= 69.0f / this->measurement_time_;
ESP_LOGD(TAG, "'%s': Got illuminance=%.1flx", this->get_name().c_str(), lx);
this->publish_state(lx);
this->status_clear_warning();
}
void BH1750Sensor::set_resolution(BH1750Resolution resolution) { this->resolution_ = resolution; }
} // namespace bh1750