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6682c43dfa
## Description: Move esphome-core codebase into esphome (and a bunch of other refactors). See https://github.com/esphome/feature-requests/issues/97 Yes this is a shit ton of work and no there's no way to automate it :( But it will be worth it 👍 Progress: - Core support (file copy etc): 80% - Base Abstractions (light, switch): ~50% - Integrations: ~10% - Working? Yes, (but only with ported components). Other refactors: - Moves all codegen related stuff into a single class: `esphome.codegen` (imported as `cg`) - Rework coroutine syntax - Move from `component/platform.py` to `domain/component.py` structure as with HA - Move all defaults out of C++ and into config validation. - Remove `make_...` helpers from Application class. Reason: Merge conflicts with every single new integration. - Pointer Variables are stored globally instead of locally in setup(). Reason: stack size limit. Future work: - Rework const.py - Move all `CONF_...` into a conf class (usage `conf.UPDATE_INTERVAL` vs `CONF_UPDATE_INTERVAL`). Reason: Less convoluted import block - Enable loading from `custom_components` folder. **Related issue (if applicable):** https://github.com/esphome/feature-requests/issues/97 **Pull request in [esphome-docs](https://github.com/esphome/esphome-docs) with documentation (if applicable):** esphome/esphome-docs#<esphome-docs PR number goes here> ## Checklist: - [ ] The code change is tested and works locally. - [ ] Tests have been added to verify that the new code works (under `tests/` folder). If user exposed functionality or configuration variables are added/changed: - [ ] Documentation added/updated in [esphomedocs](https://github.com/OttoWinter/esphomedocs).
73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
#include "mhz19.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace mhz19 {
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static const char *TAG = "mhz19";
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static const uint8_t MHZ19_REQUEST_LENGTH = 8;
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static const uint8_t MHZ19_RESPONSE_LENGTH = 9;
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static const uint8_t MHZ19_COMMAND_GET_PPM[] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00};
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uint8_t mhz19_checksum(const uint8_t *command) {
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uint8_t sum = 0;
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for (uint8_t i = 1; i < MHZ19_REQUEST_LENGTH; i++) {
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sum += command[i];
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}
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return 0xFF - sum + 0x01;
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}
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void MHZ19Component::update() {
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uint8_t response[MHZ19_RESPONSE_LENGTH];
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if (!this->mhz19_write_command_(MHZ19_COMMAND_GET_PPM, response)) {
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ESP_LOGW(TAG, "Reading data from MHZ19 failed!");
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this->status_set_warning();
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return;
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}
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if (response[0] != 0xFF || response[1] != 0x86) {
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ESP_LOGW(TAG, "Invalid preamble from MHZ19!");
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this->status_set_warning();
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return;
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}
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uint8_t checksum = mhz19_checksum(response);
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if (response[8] != checksum) {
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ESP_LOGW(TAG, "MHZ19 Checksum doesn't match: 0x%02X!=0x%02X", response[8], checksum);
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this->status_set_warning();
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return;
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}
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this->status_clear_warning();
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const uint16_t ppm = (uint16_t(response[2]) << 8) | response[3];
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const int temp = int(response[4]) - 40;
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const uint8_t status = response[5];
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ESP_LOGD(TAG, "MHZ19 Received CO₂=%uppm Temperature=%d°C Status=0x%02X", ppm, temp, status);
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if (this->co2_sensor_ != nullptr)
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this->co2_sensor_->publish_state(ppm);
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if (this->temperature_sensor_ != nullptr)
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this->temperature_sensor_->publish_state(temp);
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}
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bool MHZ19Component::mhz19_write_command_(const uint8_t *command, uint8_t *response) {
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this->flush();
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this->write_array(command, MHZ19_REQUEST_LENGTH);
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this->write_byte(mhz19_checksum(command));
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if (response == nullptr)
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return true;
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bool ret = this->read_array(response, MHZ19_RESPONSE_LENGTH);
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this->flush();
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return ret;
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}
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float MHZ19Component::get_setup_priority() const { return setup_priority::DATA; }
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void MHZ19Component::dump_config() {
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ESP_LOGCONFIG(TAG, "MH-Z19:");
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LOG_SENSOR(" ", "CO2", this->co2_sensor_);
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LOG_SENSOR(" ", "Temperature", this->temperature_sensor_);
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}
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} // namespace mhz19
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} // namespace esphome
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