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Add support for BMP388 / BMP 390 pressure and temperature sensor (#2716)

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Martin 2022-01-06 03:01:50 +01:00 committed by GitHub
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@ -31,6 +31,7 @@ esphome/components/binary_sensor/* @esphome/core
esphome/components/bl0940/* @tobias-
esphome/components/ble_client/* @buxtronix
esphome/components/bme680_bsec/* @trvrnrth
esphome/components/bmp3xx/* @martgras
esphome/components/button/* @esphome/core
esphome/components/canbus/* @danielschramm @mvturnho
esphome/components/cap1188/* @MrEditor97

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esphome/components/bmp3xx/__init__.py Normal file
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esphome/components/bmp3xx/bmp3xx.cpp Normal file
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/*
based on BMP388_DEV by Martin Lindupp
under MIT License (MIT)
Copyright (C) Martin Lindupp 2020
http://github.com/MartinL1/BMP388_DEV
*/
#include "bmp3xx.h"
#include "esphome/core/log.h"
#include "esphome/core/hal.h"
namespace esphome {
namespace bmp3xx {
static const char *const TAG = "bmp3xx.sensor";
static const LogString *chip_type_to_str(uint8_t chip_type) {
switch (chip_type) {
case BMP388_ID:
return LOG_STR("BMP 388");
case BMP390_ID:
return LOG_STR("BMP 390");
default:
return LOG_STR("Unknown Chip Type");
}
}
static const LogString *oversampling_to_str(Oversampling oversampling) {
switch (oversampling) {
case Oversampling::OVERSAMPLING_NONE:
return LOG_STR("None");
case Oversampling::OVERSAMPLING_X2:
return LOG_STR("2x");
case Oversampling::OVERSAMPLING_X4:
return LOG_STR("4x");
case Oversampling::OVERSAMPLING_X8:
return LOG_STR("8x");
case Oversampling::OVERSAMPLING_X16:
return LOG_STR("16x");
case Oversampling::OVERSAMPLING_X32:
return LOG_STR("32x");
default:
return LOG_STR("");
}
}
static const LogString *iir_filter_to_str(IIRFilter filter) {
switch (filter) {
case IIRFilter::IIR_FILTER_OFF:
return LOG_STR("OFF");
case IIRFilter::IIR_FILTER_2:
return LOG_STR("2x");
case IIRFilter::IIR_FILTER_4:
return LOG_STR("4x");
case IIRFilter::IIR_FILTER_8:
return LOG_STR("8x");
case IIRFilter::IIR_FILTER_16:
return LOG_STR("16x");
case IIRFilter::IIR_FILTER_32:
return LOG_STR("32x");
case IIRFilter::IIR_FILTER_64:
return LOG_STR("64x");
case IIRFilter::IIR_FILTER_128:
return LOG_STR("128x");
default:
return LOG_STR("");
}
}
void BMP3XXComponent::setup() {
this->error_code_ = NONE;
ESP_LOGCONFIG(TAG, "Setting up BMP3XX...");
// Call the Device base class "initialise" function
if (!reset()) {
ESP_LOGE(TAG, "Failed to reset BMP3XX...");
this->error_code_ = ERROR_SENSOR_RESET;
this->mark_failed();
}
if (!read_byte(BMP388_CHIP_ID, &this->chip_id_.reg)) {
ESP_LOGE(TAG, "Can't read chip id");
this->error_code_ = ERROR_COMMUNICATION_FAILED;
this->mark_failed();
return;
}
ESP_LOGCONFIG(TAG, "Chip %s Id 0x%X", LOG_STR_ARG(chip_type_to_str(this->chip_id_.reg)), this->chip_id_.reg);
if (chip_id_.reg != BMP388_ID && chip_id_.reg != BMP390_ID) {
ESP_LOGE(TAG, "Unknown chip id - is this really a BMP388 or BMP390?");
this->error_code_ = ERROR_WRONG_CHIP_ID;
this->mark_failed();
return;
}
// set sensor in sleep mode
stop_conversion();
// Read the calibration parameters into the params structure
if (!read_bytes(BMP388_TRIM_PARAMS, (uint8_t *) &compensation_params_, sizeof(compensation_params_))) {
ESP_LOGE(TAG, "Can't read calibration data");
this->error_code_ = ERROR_COMMUNICATION_FAILED;
this->mark_failed();
return;
}
compensation_float_params_.param_T1 =
(float) compensation_params_.param_T1 / powf(2.0f, -8.0f); // Calculate the floating point trim parameters
compensation_float_params_.param_T2 = (float) compensation_params_.param_T2 / powf(2.0f, 30.0f);
compensation_float_params_.param_T3 = (float) compensation_params_.param_T3 / powf(2.0f, 48.0f);
compensation_float_params_.param_P1 = ((float) compensation_params_.param_P1 - powf(2.0f, 14.0f)) / powf(2.0f, 20.0f);
compensation_float_params_.param_P2 = ((float) compensation_params_.param_P2 - powf(2.0f, 14.0f)) / powf(2.0f, 29.0f);
compensation_float_params_.param_P3 = (float) compensation_params_.param_P3 / powf(2.0f, 32.0f);
compensation_float_params_.param_P4 = (float) compensation_params_.param_P4 / powf(2.0f, 37.0f);
compensation_float_params_.param_P5 = (float) compensation_params_.param_P5 / powf(2.0f, -3.0f);
compensation_float_params_.param_P6 = (float) compensation_params_.param_P6 / powf(2.0f, 6.0f);
compensation_float_params_.param_P7 = (float) compensation_params_.param_P7 / powf(2.0f, 8.0f);
compensation_float_params_.param_P8 = (float) compensation_params_.param_P8 / powf(2.0f, 15.0f);
compensation_float_params_.param_P9 = (float) compensation_params_.param_P9 / powf(2.0f, 48.0f);
compensation_float_params_.param_P10 = (float) compensation_params_.param_P10 / powf(2.0f, 48.0f);
compensation_float_params_.param_P11 = (float) compensation_params_.param_P11 / powf(2.0f, 65.0f);
// Initialise the BMP388 IIR filter register
if (!set_iir_filter(this->iir_filter_)) {
ESP_LOGE(TAG, "Failed to set IIR filter");
this->error_code_ = ERROR_COMMUNICATION_FAILED;
this->mark_failed();
return;
}
// Set power control registers
pwr_ctrl_.bit.press_en = 1;
pwr_ctrl_.bit.temp_en = 1;
// Disable pressure if no sensor defined
// keep temperature enabled since it's needed for compensation
if (this->pressure_sensor_ == nullptr) {
pwr_ctrl_.bit.press_en = 0;
this->pressure_oversampling_ = OVERSAMPLING_NONE;
}
// just disable oeversampling for temp if not used
if (this->temperature_sensor_ == nullptr) {
this->temperature_oversampling_ = OVERSAMPLING_NONE;
}
// Initialise the BMP388 oversampling register
if (!set_oversampling_register(this->pressure_oversampling_, this->temperature_oversampling_)) {
ESP_LOGE(TAG, "Failed to set oversampling register");
this->error_code_ = ERROR_COMMUNICATION_FAILED;
this->mark_failed();
return;
}
}
void BMP3XXComponent::dump_config() {
ESP_LOGCONFIG(TAG, "BMP3XX:");
ESP_LOGCONFIG(TAG, " Type: %s (0x%X)", LOG_STR_ARG(chip_type_to_str(this->chip_id_.reg)), this->chip_id_.reg);
LOG_I2C_DEVICE(this);
switch (this->error_code_) {
case NONE:
break;
case ERROR_COMMUNICATION_FAILED:
ESP_LOGE(TAG, "Communication with BMP3XX failed!");
break;
case ERROR_WRONG_CHIP_ID:
ESP_LOGE(
TAG,
"BMP3XX has wrong chip ID (reported id: 0x%X) - please check if you are really using a BMP 388 or BMP 390",
this->chip_id_.reg);
break;
case ERROR_SENSOR_RESET:
ESP_LOGE(TAG, "BMP3XX failed to reset");
break;
default:
ESP_LOGE(TAG, "BMP3XX error code %d", (int) this->error_code_);
break;
}
ESP_LOGCONFIG(TAG, " IIR Filter: %s", LOG_STR_ARG(iir_filter_to_str(this->iir_filter_)));
LOG_UPDATE_INTERVAL(this);
if (this->temperature_sensor_) {
LOG_SENSOR(" ", "Temperature", this->temperature_sensor_);
ESP_LOGCONFIG(TAG, " Oversampling: %s", LOG_STR_ARG(oversampling_to_str(this->temperature_oversampling_)));
}
if (this->pressure_sensor_) {
LOG_SENSOR(" ", "Pressure", this->pressure_sensor_);
ESP_LOGCONFIG(TAG, " Oversampling: %s", LOG_STR_ARG(oversampling_to_str(this->pressure_oversampling_)));
}
}
float BMP3XXComponent::get_setup_priority() const { return setup_priority::DATA; }
inline uint8_t oversampling_to_time(Oversampling over_sampling) { return (1 << uint8_t(over_sampling)); }
void BMP3XXComponent::update() {
// Enable sensor
ESP_LOGV(TAG, "Sending conversion request...");
float meas_time = 1.0f;
// Ref: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp390-ds002.pdf 3.9.2
meas_time += 2.02f * oversampling_to_time(this->temperature_oversampling_) + 0.163f;
meas_time += 2.02f * oversampling_to_time(this->pressure_oversampling_) + 0.392f;
meas_time += 0.234f;
if (!set_mode(FORCED_MODE)) {
ESP_LOGE(TAG, "Failed start forced mode");
this->mark_failed();
return;
}
ESP_LOGVV(TAG, "measurement time %d", uint32_t(ceilf(meas_time)));
this->set_timeout("data", uint32_t(ceilf(meas_time)), [this]() {
float temperature = 0.0f;
float pressure = 0.0f;
if (this->pressure_sensor_ != nullptr) {
if (!get_measurements(temperature, pressure)) {
ESP_LOGW(TAG, "Failed to read pressure and temperature - skipping update");
this->status_set_warning();
return;
}
ESP_LOGD(TAG, "Got temperature=%.1f°C pressure=%.1fhPa", temperature, pressure);
} else {
if (!get_temperature(temperature)) {
ESP_LOGW(TAG, "Failed to read temperature - skipping update");
this->status_set_warning();
return;
}
ESP_LOGD(TAG, "Got temperature=%.1f°C", temperature);
}
if (this->temperature_sensor_ != nullptr)
this->temperature_sensor_->publish_state(temperature);
if (this->pressure_sensor_ != nullptr)
this->pressure_sensor_->publish_state(pressure);
this->status_clear_warning();
set_mode(SLEEP_MODE);
});
}
// Reset the BMP3XX
uint8_t BMP3XXComponent::reset() {
write_byte(BMP388_CMD, RESET_CODE); // Write the reset code to the command register
// Wait for 10ms
delay(10);
this->read_byte(BMP388_EVENT, &event_.reg); // Read the BMP388's event register
return event_.bit.por_detected; // Return if device reset is complete
}
// Start a one shot measurement in FORCED_MODE
bool BMP3XXComponent::start_forced_conversion() {
// Only set FORCED_MODE if we're already in SLEEP_MODE
if (pwr_ctrl_.bit.mode == SLEEP_MODE) {
return set_mode(FORCED_MODE);
}
return true;
}
// Stop the conversion and return to SLEEP_MODE
bool BMP3XXComponent::stop_conversion() { return set_mode(SLEEP_MODE); }
// Set the pressure oversampling rate
bool BMP3XXComponent::set_pressure_oversampling(Oversampling oversampling) {
osr_.bit.osr_p = oversampling;
return this->write_byte(BMP388_OSR, osr_.reg);
}
// Set the temperature oversampling rate
bool BMP3XXComponent::set_temperature_oversampling(Oversampling oversampling) {
osr_.bit.osr_t = oversampling;
return this->write_byte(BMP388_OSR, osr_.reg);
}
// Set the IIR filter setting
bool BMP3XXComponent::set_iir_filter(IIRFilter iir_filter) {
config_.bit.iir_filter = iir_filter;
return this->write_byte(BMP388_CONFIG, config_.reg);
}
// Get temperature
bool BMP3XXComponent::get_temperature(float &temperature) {
// Check if a measurement is ready
if (!data_ready()) {
return false;
}
uint8_t data[3];
// Read the temperature
if (!this->read_bytes(BMP388_DATA_3, &data[0], 3)) {
ESP_LOGE(TAG, "Failed to read temperature");
return false;
}
// Copy the temperature data into the adc variables
int32_t adc_temp = (int32_t) data[2] << 16 | (int32_t) data[1] << 8 | (int32_t) data[0];
// Temperature compensation (function from BMP388 datasheet)
temperature = bmp388_compensate_temperature_((float) adc_temp);
return true;
}
// Get the pressure
bool BMP3XXComponent::get_pressure(float &pressure) {
float temperature;
return get_measurements(temperature, pressure);
}
// Get temperature and pressure
bool BMP3XXComponent::get_measurements(float &temperature, float &pressure) {
// Check if a measurement is ready
if (!data_ready()) {
ESP_LOGD(TAG, "BMP3XX Get measurement - data not ready skipping update");
return false;
}
uint8_t data[6];
// Read the temperature and pressure data
if (!this->read_bytes(BMP388_DATA_0, &data[0], 6)) {
ESP_LOGE(TAG, "Failed to read measurements");
return false;
}
// Copy the temperature and pressure data into the adc variables
int32_t adc_pres = (int32_t) data[2] << 16 | (int32_t) data[1] << 8 | (int32_t) data[0];
int32_t adc_temp = (int32_t) data[5] << 16 | (int32_t) data[4] << 8 | (int32_t) data[3];
// Temperature compensation (function from BMP388 datasheet)
temperature = bmp388_compensate_temperature_((float) adc_temp);
// Pressure compensation (function from BMP388 datasheet)
pressure = bmp388_compensate_pressure_((float) adc_pres, temperature);
// Calculate the pressure in millibar/hPa
pressure /= 100.0f;
return true;
}
// Set the BMP388's mode in the power control register
bool BMP3XXComponent::set_mode(OperationMode mode) {
pwr_ctrl_.bit.mode = mode;
return this->write_byte(BMP388_PWR_CTRL, pwr_ctrl_.reg);
}
// Set the BMP388 oversampling register
bool BMP3XXComponent::set_oversampling_register(Oversampling pressure_oversampling,
Oversampling temperature_oversampling) {
osr_.reg = temperature_oversampling << 3 | pressure_oversampling;
return this->write_byte(BMP388_OSR, osr_.reg);
}
// Check if measurement data is ready
bool BMP3XXComponent::data_ready() {
// If we're in SLEEP_MODE return immediately
if (pwr_ctrl_.bit.mode == SLEEP_MODE) {
ESP_LOGD(TAG, "Not ready - sensor is in sleep mode");
return false;
}
// Read the interrupt status register
uint8_t status;
if (!this->read_byte(BMP388_INT_STATUS, &status)) {
ESP_LOGE(TAG, "Failed to read status register");
return false;
}
int_status_.reg = status;
ESP_LOGVV(TAG, "data ready status %d", status);
// If we're in FORCED_MODE switch back to SLEEP_MODE
if (int_status_.bit.drdy) {
if (pwr_ctrl_.bit.mode == FORCED_MODE) {
pwr_ctrl_.bit.mode = SLEEP_MODE;
}
return true; // The measurement is ready
}
return false; // The measurement is still pending
}
////////////////////////////////////////////////////////////////////////////////
// Bosch BMP3XXComponent (Private) Member Functions
////////////////////////////////////////////////////////////////////////////////
float BMP3XXComponent::bmp388_compensate_temperature_(float uncomp_temp) {
float partial_data1 = uncomp_temp - compensation_float_params_.param_T1;
float partial_data2 = partial_data1 * compensation_float_params_.param_T2;
return partial_data2 + partial_data1 * partial_data1 * compensation_float_params_.param_T3;
}
float BMP3XXComponent::bmp388_compensate_pressure_(float uncomp_press, float t_lin) {
float partial_data1 = compensation_float_params_.param_P6 * t_lin;
float partial_data2 = compensation_float_params_.param_P7 * t_lin * t_lin;
float partial_data3 = compensation_float_params_.param_P8 * t_lin * t_lin * t_lin;
float partial_out1 = compensation_float_params_.param_P5 + partial_data1 + partial_data2 + partial_data3;
partial_data1 = compensation_float_params_.param_P2 * t_lin;
partial_data2 = compensation_float_params_.param_P3 * t_lin * t_lin;
partial_data3 = compensation_float_params_.param_P4 * t_lin * t_lin * t_lin;
float partial_out2 =
uncomp_press * (compensation_float_params_.param_P1 + partial_data1 + partial_data2 + partial_data3);
partial_data1 = uncomp_press * uncomp_press;
partial_data2 = compensation_float_params_.param_P9 + compensation_float_params_.param_P10 * t_lin;
partial_data3 = partial_data1 * partial_data2;
float partial_data4 =
partial_data3 + uncomp_press * uncomp_press * uncomp_press * compensation_float_params_.param_P11;
return partial_out1 + partial_out2 + partial_data4;
}
} // namespace bmp3xx
} // namespace esphome

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esphome/components/bmp3xx/bmp3xx.h Normal file
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/*
based on BMP388_DEV by Martin Lindupp
under MIT License (MIT)
Copyright (C) Martin Lindupp 2020
http://github.com/MartinL1/BMP388_DEV
*/
#pragma once
#include "esphome/core/component.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/i2c/i2c.h"
namespace esphome {
namespace bmp3xx {
static const uint8_t BMP388_ID = 0x50; // The BMP388 device ID
static const uint8_t BMP390_ID = 0x60; // The BMP390 device ID
static const uint8_t RESET_CODE = 0xB6; // The BMP388 reset code
/// BMP388_DEV Registers
enum {
BMP388_CHIP_ID = 0x00, // Chip ID register sub-address
BMP388_ERR_REG = 0x02, // Error register sub-address
BMP388_STATUS = 0x03, // Status register sub-address
BMP388_DATA_0 = 0x04, // Pressure eXtended Least Significant Byte (XLSB) register sub-address
BMP388_DATA_1 = 0x05, // Pressure Least Significant Byte (LSB) register sub-address
BMP388_DATA_2 = 0x06, // Pressure Most Significant Byte (MSB) register sub-address
BMP388_DATA_3 = 0x07, // Temperature eXtended Least Significant Byte (XLSB) register sub-address
BMP388_DATA_4 = 0x08, // Temperature Least Significant Byte (LSB) register sub-address
BMP388_DATA_5 = 0x09, // Temperature Most Significant Byte (MSB) register sub-address
BMP388_SENSORTIME_0 = 0x0C, // Sensor time register 0 sub-address
BMP388_SENSORTIME_1 = 0x0D, // Sensor time register 1 sub-address
BMP388_SENSORTIME_2 = 0x0E, // Sensor time register 2 sub-address
BMP388_EVENT = 0x10, // Event register sub-address
BMP388_INT_STATUS = 0x11, // Interrupt Status register sub-address
BMP388_INT_CTRL = 0x19, // Interrupt Control register sub-address
BMP388_IF_CONFIG = 0x1A, // Interface Configuration register sub-address
BMP388_PWR_CTRL = 0x1B, // Power Control register sub-address
BMP388_OSR = 0x1C, // Oversampling register sub-address
BMP388_ODR = 0x1D, // Output Data Rate register sub-address
BMP388_CONFIG = 0x1F, // Configuration register sub-address
BMP388_TRIM_PARAMS = 0x31, // Trim parameter registers' base sub-address
BMP388_CMD = 0x7E // Command register sub-address
};
/// Device mode bitfield in the control and measurement register
enum OperationMode { SLEEP_MODE = 0x00, FORCED_MODE = 0x01, NORMAL_MODE = 0x03 };
/// Oversampling bit fields in the control and measurement register
enum Oversampling {
OVERSAMPLING_NONE = 0x00,
OVERSAMPLING_X2 = 0x01,
OVERSAMPLING_X4 = 0x02,
OVERSAMPLING_X8 = 0x03,
OVERSAMPLING_X16 = 0x04,
OVERSAMPLING_X32 = 0x05
};
/// Infinite Impulse Response (IIR) filter bit field in the configuration register
enum IIRFilter {
IIR_FILTER_OFF = 0x00,
IIR_FILTER_2 = 0x01,
IIR_FILTER_4 = 0x02,
IIR_FILTER_8 = 0x03,
IIR_FILTER_16 = 0x04,
IIR_FILTER_32 = 0x05,
IIR_FILTER_64 = 0x06,
IIR_FILTER_128 = 0x07
};
/// This class implements support for the BMP3XX Temperature+Pressure i2c sensor.
class BMP3XXComponent : public PollingComponent, public i2c::I2CDevice {
public:
void setup() override;
void dump_config() override;
float get_setup_priority() const override;
void update() override;
void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }
void set_pressure_sensor(sensor::Sensor *pressure_sensor) { pressure_sensor_ = pressure_sensor; }
/// Set the oversampling value for the temperature sensor. Default is 16x.
void set_temperature_oversampling_config(Oversampling temperature_oversampling) {
this->temperature_oversampling_ = temperature_oversampling;
}
/// Set the oversampling value for the pressure sensor. Default is 16x.
void set_pressure_oversampling_config(Oversampling pressure_oversampling) {
this->pressure_oversampling_ = pressure_oversampling;
}
/// Set the IIR Filter used to increase accuracy, defaults to no IIR Filter.
void set_iir_filter_config(IIRFilter iir_filter) { this->iir_filter_ = iir_filter; }
/// Soft reset the sensor
uint8_t reset();
/// Start continuous measurement in NORMAL_MODE
bool start_normal_conversion();
/// Start a one shot measurement in FORCED_MODE
bool start_forced_conversion();
/// Stop the conversion and return to SLEEP_MODE
bool stop_conversion();
/// Set the pressure oversampling: OFF, X1, X2, X4, X8, X16, X32
bool set_pressure_oversampling(Oversampling pressure_oversampling);
/// Set the temperature oversampling: OFF, X1, X2, X4, X8, X16, X32
bool set_temperature_oversampling(Oversampling temperature_oversampling);
/// Set the IIR filter setting: OFF, 2, 3, 8, 16, 32
bool set_iir_filter(IIRFilter iir_filter);
/// Get a temperature measurement
bool get_temperature(float &temperature);
/// Get a pressure measurement
bool get_pressure(float &pressure);
/// Get a temperature and pressure measurement
bool get_measurements(float &temperature, float &pressure);
/// Get a temperature and pressure measurement
bool get_measurement();
/// Set the barometer mode
bool set_mode(OperationMode mode);
/// Set the BMP388 oversampling register
bool set_oversampling_register(Oversampling pressure_oversampling, Oversampling temperature_oversampling);
/// Checks if a measurement is ready
bool data_ready();
protected:
Oversampling temperature_oversampling_{OVERSAMPLING_X16};
Oversampling pressure_oversampling_{OVERSAMPLING_X16};
IIRFilter iir_filter_{IIR_FILTER_OFF};
OperationMode operation_mode_{FORCED_MODE};
sensor::Sensor *temperature_sensor_;
sensor::Sensor *pressure_sensor_;
enum ErrorCode {
NONE = 0,
ERROR_COMMUNICATION_FAILED,
ERROR_WRONG_CHIP_ID,
ERROR_SENSOR_STATUS,
ERROR_SENSOR_RESET,
} error_code_{NONE};
struct { // The BMP388 compensation trim parameters (coefficients)
uint16_t param_T1;
uint16_t param_T2;
int8_t param_T3;
int16_t param_P1;
int16_t param_P2;
int8_t param_P3;
int8_t param_P4;
uint16_t param_P5;
uint16_t param_P6;
int8_t param_P7;
int8_t param_P8;
int16_t param_P9;
int8_t param_P10;
int8_t param_P11;
} __attribute__((packed)) compensation_params_;
struct FloatParams { // The BMP388 float point compensation trim parameters
float param_T1;
float param_T2;
float param_T3;
float param_P1;
float param_P2;
float param_P3;
float param_P4;
float param_P5;
float param_P6;
float param_P7;
float param_P8;
float param_P9;
float param_P10;
float param_P11;
} compensation_float_params_;
union { // Copy of the BMP388's chip id register
struct {
uint8_t chip_id_nvm : 4;
uint8_t chip_id_fixed : 4;
} bit;
uint8_t reg;
} chip_id_ = {.reg = 0};
union { // Copy of the BMP388's event register
struct {
uint8_t por_detected : 1;
} bit;
uint8_t reg;
} event_ = {.reg = 0};
union { // Copy of the BMP388's interrupt status register
struct {
uint8_t fwm_int : 1;
uint8_t ffull_int : 1;
uint8_t : 1;
uint8_t drdy : 1;
} bit;
uint8_t reg;
} int_status_ = {.reg = 0};
union { // Copy of the BMP388's power control register
struct {
uint8_t press_en : 1;
uint8_t temp_en : 1;
uint8_t : 2;
uint8_t mode : 2;
} bit;
uint8_t reg;
} pwr_ctrl_ = {.reg = 0};
union { // Copy of the BMP388's oversampling register
struct {
uint8_t osr_p : 3;
uint8_t osr_t : 3;
} bit;
uint8_t reg;
} osr_ = {.reg = 0};
union { // Copy of the BMP388's output data rate register
struct {
uint8_t odr_sel : 5;
} bit;
uint8_t reg;
} odr_ = {.reg = 0};
union { // Copy of the BMP388's configuration register
struct {
uint8_t : 1;
uint8_t iir_filter : 3;
} bit;
uint8_t reg;
} config_ = {.reg = 0};
// Bosch temperature compensation function
float bmp388_compensate_temperature_(float uncomp_temp);
// Bosch pressure compensation function
float bmp388_compensate_pressure_(float uncomp_press, float t_lin);
};
} // namespace bmp3xx
} // namespace esphome

100
esphome/components/bmp3xx/sensor.py Normal file
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@ -0,0 +1,100 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import i2c, sensor
from esphome.const import (
CONF_ID,
CONF_IIR_FILTER,
CONF_OVERSAMPLING,
CONF_PRESSURE,
CONF_TEMPERATURE,
DEVICE_CLASS_PRESSURE,
DEVICE_CLASS_TEMPERATURE,
STATE_CLASS_MEASUREMENT,
UNIT_CELSIUS,
UNIT_HECTOPASCAL,
)
CODEOWNERS = ["@martgras"]
DEPENDENCIES = ["i2c"]
bmp3xx_ns = cg.esphome_ns.namespace("bmp3xx")
Oversampling = bmp3xx_ns.enum("Oversampling")
OVERSAMPLING_OPTIONS = {
"NONE": Oversampling.OVERSAMPLING_NONE,
"2X": Oversampling.OVERSAMPLING_X2,
"4X": Oversampling.OVERSAMPLING_X4,
"8X": Oversampling.OVERSAMPLING_X8,
"16X": Oversampling.OVERSAMPLING_X16,
"32x": Oversampling.OVERSAMPLING_X32,
}
IIRFilter = bmp3xx_ns.enum("IIRFilter")
IIR_FILTER_OPTIONS = {
"OFF": IIRFilter.IIR_FILTER_OFF,
"2X": IIRFilter.IIR_FILTER_2,
"4X": IIRFilter.IIR_FILTER_4,
"8X": IIRFilter.IIR_FILTER_8,
"16X": IIRFilter.IIR_FILTER_16,
"32X": IIRFilter.IIR_FILTER_32,
"64X": IIRFilter.IIR_FILTER_64,
"128X": IIRFilter.IIR_FILTER_128,
}
BMP3XXComponent = bmp3xx_ns.class_(
"BMP3XXComponent", cg.PollingComponent, i2c.I2CDevice
)
CONFIG_SCHEMA = (
cv.Schema(
{
cv.GenerateID(): cv.declare_id(BMP3XXComponent),
cv.Optional(CONF_TEMPERATURE): sensor.sensor_schema(
unit_of_measurement=UNIT_CELSIUS,
accuracy_decimals=1,
device_class=DEVICE_CLASS_TEMPERATURE,
state_class=STATE_CLASS_MEASUREMENT,
).extend(
{
cv.Optional(CONF_OVERSAMPLING, default="2X"): cv.enum(
OVERSAMPLING_OPTIONS, upper=True
),
}
),
cv.Optional(CONF_PRESSURE): sensor.sensor_schema(
unit_of_measurement=UNIT_HECTOPASCAL,
accuracy_decimals=1,
device_class=DEVICE_CLASS_PRESSURE,
state_class=STATE_CLASS_MEASUREMENT,
).extend(
{
cv.Optional(CONF_OVERSAMPLING, default="16X"): cv.enum(
OVERSAMPLING_OPTIONS, upper=True
),
}
),
cv.Optional(CONF_IIR_FILTER, default="OFF"): cv.enum(
IIR_FILTER_OPTIONS, upper=True
),
}
)
.extend(cv.polling_component_schema("60s"))
.extend(i2c.i2c_device_schema(0x77))
)
async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await cg.register_component(var, config)
await i2c.register_i2c_device(var, config)
cg.add(var.set_iir_filter_config(config[CONF_IIR_FILTER]))
if CONF_TEMPERATURE in config:
conf = config[CONF_TEMPERATURE]
sens = await sensor.new_sensor(conf)
cg.add(var.set_temperature_sensor(sens))
cg.add(var.set_temperature_oversampling_config(conf[CONF_OVERSAMPLING]))
if CONF_PRESSURE in config:
conf = config[CONF_PRESSURE]
sens = await sensor.new_sensor(conf)
cg.add(var.set_pressure_sensor(sens))
cg.add(var.set_pressure_oversampling_config(conf[CONF_OVERSAMPLING]))

9
tests/test5.yaml
View file

@ -180,6 +180,15 @@ sensor:
co2:
name: CO2 Sensor
- platform: bmp3xx
temperature:
name: "BMP Temperature"
oversampling: 16x
pressure:
name: "BMP Pressure"
address: 0x77
iir_filter: 2X
script:
- id: automation_test
then: