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d66b2a1778
* Add support for mpl3115a2 * Add codeowner * Linter/test updates * Minor changes * Made pressure/altitude exclusive Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
#include "mpl3115a2.h"
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#include "esphome/core/hal.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace mpl3115a2 {
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static const char *const TAG = "mpl3115a2";
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void MPL3115A2Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up MPL3115A2...");
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uint8_t whoami = 0xFF;
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if (!this->read_byte(MPL3115A2_WHOAMI, &whoami, false)) {
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this->error_code_ = COMMUNICATION_FAILED;
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this->mark_failed();
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return;
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}
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if (whoami != 0xC4) {
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this->error_code_ = WRONG_ID;
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this->mark_failed();
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return;
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}
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// reset
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this->write_byte(MPL3115A2_CTRL_REG1, MPL3115A2_CTRL_REG1_RST);
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delay(15);
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// enable data ready events for pressure/altitude and temperature
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this->write_byte(MPL3115A2_PT_DATA_CFG,
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MPL3115A2_PT_DATA_CFG_TDEFE | MPL3115A2_PT_DATA_CFG_PDEFE | MPL3115A2_PT_DATA_CFG_DREM);
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}
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void MPL3115A2Component::dump_config() {
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ESP_LOGCONFIG(TAG, "MPL3115A2:");
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LOG_I2C_DEVICE(this);
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if (this->is_failed()) {
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switch (this->error_code_) {
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case COMMUNICATION_FAILED:
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ESP_LOGE(TAG, "Communication with MPL3115A2 failed!");
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break;
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case WRONG_ID:
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ESP_LOGE(TAG, "MPL3115A2 has invalid id");
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break;
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default:
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ESP_LOGE(TAG, "Setting up MPL3115A2 registers failed!");
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break;
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}
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}
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LOG_UPDATE_INTERVAL(this);
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LOG_SENSOR(" ", "Temperature", this->temperature_);
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LOG_SENSOR(" ", "Pressure", this->pressure_);
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LOG_SENSOR(" ", "Altitude", this->altitude_);
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}
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void MPL3115A2Component::update() {
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uint8_t mode = MPL3115A2_CTRL_REG1_OS128;
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this->write_byte(MPL3115A2_CTRL_REG1, mode, true);
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// Trigger a new reading
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mode |= MPL3115A2_CTRL_REG1_OST;
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if (this->altitude_ != nullptr)
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mode |= MPL3115A2_CTRL_REG1_ALT;
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this->write_byte(MPL3115A2_CTRL_REG1, mode, true);
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// Wait until status shows reading available
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uint8_t status = 0;
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if (!this->read_byte(MPL3115A2_REGISTER_STATUS, &status, false) || (status & MPL3115A2_REGISTER_STATUS_PDR) == 0) {
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delay(10);
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if (!this->read_byte(MPL3115A2_REGISTER_STATUS, &status, false) || (status & MPL3115A2_REGISTER_STATUS_PDR) == 0) {
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return;
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}
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}
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uint8_t buffer[5] = {0, 0, 0, 0, 0};
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this->read_register(MPL3115A2_REGISTER_PRESSURE_MSB, buffer, 5, false);
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float altitude = 0, pressure = 0;
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if (this->altitude_ != nullptr) {
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int32_t alt = encode_uint32(buffer[0], buffer[1], buffer[2], 0);
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altitude = float(alt) / 65536.0;
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this->altitude_->publish_state(altitude);
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} else {
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uint32_t p = encode_uint32(0, buffer[0], buffer[1], buffer[2]);
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pressure = float(p) / 6400.0;
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if (this->pressure_ != nullptr)
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this->pressure_->publish_state(pressure);
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}
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int16_t t = encode_uint16(buffer[3], buffer[4]);
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float temperature = float(t) / 256.0;
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if (this->temperature_ != nullptr)
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this->temperature_->publish_state(temperature);
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ESP_LOGD(TAG, "Got Temperature=%.1f°C Altitude=%.1f Pressure=%.1f", temperature, altitude, pressure);
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this->status_clear_warning();
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}
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} // namespace mpl3115a2
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} // namespace esphome
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