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CCS811 env_data

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This commit is contained in:
Otto Winter
2019-05-14 11:40:35 +02:00
parent dd79e37933
commit 6306d44955
3 changed files with 42 additions and 1 deletions
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24
esphome/components/ccs811/ccs811.cpp
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@@ -82,6 +82,30 @@ void CCS811Component::update() {
this->tvoc_->publish_state(tvoc);
this->status_clear_warning();
this->send_env_data_();
}
void CCS811Component::send_env_data_() {
if (this->humidity_ == nullptr && this->temperature_ == nullptr)
return;
float humidity = NAN;
if (this->humidity_ != nullptr)
humidity = this->humidity_->state;
if (isnan(humidity) || humidity < 0 || humidity > 100)
humidity = 50;
float temperature = NAN;
if (this->temperature_ != nullptr)
temperature = this->temperature_->state;
if (isnan(temperature) || temperature < -25 || temperature > 50)
temperature = 25;
// temperature has a 25° offset to allow negative temperatures
temperature += 25;
// only 0.5 fractions are supported (application note)
auto hum_value = static_cast<uint8_t>(roundf(humidity * 2));
auto temp_value = static_cast<uint8_t>(roundf(temperature * 2));
this->write_bytes(0x05, {hum_value, 0x00, temp_value, 0x00});
}
void CCS811Component::dump_config() {
ESP_LOGCONFIG(TAG, "CCS811");