Add SDP3x sensor (#2064)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Co-authored-by: Otto Winter <otto@otto-winter.com>
This commit is contained in:
Nicholas Peters 2021-07-29 04:57:52 -04:00 committed by GitHub
parent 513066ba52
commit 8dbac20f8b
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7 changed files with 202 additions and 0 deletions

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@ -97,6 +97,7 @@ esphome/components/rf_bridge/* @jesserockz
esphome/components/rtttl/* @glmnet
esphome/components/script/* @esphome/core
esphome/components/sdm_meter/* @jesserockz @polyfaces
esphome/components/sdp3x/* @Azimath
esphome/components/selec_meter/* @sourabhjaiswal
esphome/components/sensor/* @esphome/core
esphome/components/sgp40/* @SenexCrenshaw
@ -128,6 +129,7 @@ esphome/components/thermostat/* @kbx81
esphome/components/time/* @OttoWinter
esphome/components/tm1637/* @glmnet
esphome/components/tmp102/* @timsavage
esphome/components/tmp117/* @Azimath
esphome/components/tof10120/* @wstrzalka
esphome/components/tuya/binary_sensor/* @jesserockz
esphome/components/tuya/climate/* @jesserockz

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@ -0,0 +1,124 @@
#include "sdp3x.h"
#include "esphome/core/log.h"
#include "esphome/core/helpers.h"
namespace esphome {
namespace sdp3x {
static const char *const TAG = "sdp3x.sensor";
static const uint8_t SDP3X_SOFT_RESET[2] = {0x00, 0x06};
static const uint8_t SDP3X_READ_ID1[2] = {0x36, 0x7C};
static const uint8_t SDP3X_READ_ID2[2] = {0xE1, 0x02};
static const uint8_t SDP3X_START_DP_AVG[2] = {0x36, 0x15};
static const uint8_t SDP3X_STOP_MEAS[2] = {0x3F, 0xF9};
void SDP3XComponent::update() { this->read_pressure_(); }
void SDP3XComponent::setup() {
ESP_LOGD(TAG, "Setting up SDP3X...");
if (!this->write_bytes_raw(SDP3X_STOP_MEAS, 2)) {
ESP_LOGW(TAG, "Stop SDP3X failed!"); // This sometimes fails for no good reason
}
if (!this->write_bytes_raw(SDP3X_SOFT_RESET, 2)) {
ESP_LOGW(TAG, "Soft Reset SDP3X failed!"); // This sometimes fails for no good reason
}
delay_microseconds_accurate(20000);
if (!this->write_bytes_raw(SDP3X_READ_ID1, 2)) {
ESP_LOGE(TAG, "Read ID1 SDP3X failed!");
this->mark_failed();
return;
}
if (!this->write_bytes_raw(SDP3X_READ_ID2, 2)) {
ESP_LOGE(TAG, "Read ID2 SDP3X failed!");
this->mark_failed();
return;
}
uint8_t data[18];
if (!this->read_bytes_raw(data, 18)) {
ESP_LOGE(TAG, "Read ID SDP3X failed!");
this->mark_failed();
return;
}
if (!(check_crc_(&data[0], 2, data[2]) && check_crc_(&data[3], 2, data[5]))) {
ESP_LOGE(TAG, "CRC ID SDP3X failed!");
this->mark_failed();
return;
}
if (data[3] == 0x01) {
ESP_LOGCONFIG(TAG, "SDP3X is SDP31");
pressure_scale_factor_ = 60.0f * 100.0f; // Scale factors converted to hPa per count
} else if (data[3] == 0x02) {
ESP_LOGCONFIG(TAG, "SDP3X is SDP32");
pressure_scale_factor_ = 240.0f * 100.0f;
}
if (!this->write_bytes_raw(SDP3X_START_DP_AVG, 2)) {
ESP_LOGE(TAG, "Start Measurements SDP3X failed!");
this->mark_failed();
return;
}
ESP_LOGCONFIG(TAG, "SDP3X started!");
}
void SDP3XComponent::dump_config() {
LOG_SENSOR(" ", "SDP3X", this);
LOG_I2C_DEVICE(this);
if (this->is_failed()) {
ESP_LOGE(TAG, " Connection with SDP3X failed!");
}
LOG_UPDATE_INTERVAL(this);
}
void SDP3XComponent::read_pressure_() {
uint8_t data[9];
if (!this->read_bytes_raw(data, 9)) {
ESP_LOGW(TAG, "Couldn't read SDP3X data!");
this->status_set_warning();
return;
}
if (!(check_crc_(&data[0], 2, data[2]) && check_crc_(&data[3], 2, data[5]) && check_crc_(&data[6], 2, data[8]))) {
ESP_LOGW(TAG, "Invalid SDP3X data!");
this->status_set_warning();
return;
}
int16_t pressure_raw = encode_uint16(data[0], data[1]);
float pressure = pressure_raw / pressure_scale_factor_;
ESP_LOGV(TAG, "Got raw pressure=%d, scale factor =%.3f ", pressure_raw, pressure_scale_factor_);
ESP_LOGD(TAG, "Got Pressure=%.3f hPa", pressure);
this->publish_state(pressure);
this->status_clear_warning();
}
float SDP3XComponent::get_setup_priority() const { return setup_priority::DATA; }
// Check CRC function from SDP3X sample code provided by sensirion
// Returns true if a checksum is OK
bool SDP3XComponent::check_crc_(const uint8_t data[], uint8_t size, uint8_t checksum) {
uint8_t crc = 0xFF;
// calculates 8-Bit checksum with given polynomial 0x31 (x^8 + x^5 + x^4 + 1)
for (int i = 0; i < size; i++) {
crc ^= (data[i]);
for (uint8_t bit = 8; bit > 0; --bit) {
if (crc & 0x80)
crc = (crc << 1) ^ 0x31;
else
crc = (crc << 1);
}
}
// verify checksum
return (crc == checksum);
}
} // namespace sdp3x
} // namespace esphome

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@ -0,0 +1,30 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/i2c/i2c.h"
namespace esphome {
namespace sdp3x {
class SDP3XComponent : public PollingComponent, public i2c::I2CDevice, public sensor::Sensor {
public:
/// Schedule temperature+pressure readings.
void update() override;
/// Setup the sensor and test for a connection.
void setup() override;
void dump_config() override;
float get_setup_priority() const override;
protected:
/// Internal method to read the pressure from the component after it has been scheduled.
void read_pressure_();
bool check_crc_(const uint8_t data[], uint8_t size, uint8_t checksum);
float pressure_scale_factor_ = 0.0f; // hPa per count
};
} // namespace sdp3x
} // namespace esphome

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@ -0,0 +1,40 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import i2c, sensor
from esphome.const import (
CONF_ID,
DEVICE_CLASS_PRESSURE,
ICON_EMPTY,
STATE_CLASS_MEASUREMENT,
UNIT_HECTOPASCAL,
)
DEPENDENCIES = ["i2c"]
CODEOWNERS = ["@Azimath"]
sdp3x_ns = cg.esphome_ns.namespace("sdp3x")
SDP3XComponent = sdp3x_ns.class_("SDP3XComponent", cg.PollingComponent, i2c.I2CDevice)
CONFIG_SCHEMA = (
sensor.sensor_schema(
UNIT_HECTOPASCAL,
ICON_EMPTY,
3,
DEVICE_CLASS_PRESSURE,
STATE_CLASS_MEASUREMENT,
)
.extend(
{
cv.GenerateID(): cv.declare_id(SDP3XComponent),
}
)
.extend(cv.polling_component_schema("60s"))
.extend(i2c.i2c_device_schema(0x21))
)
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)
await sensor.register_sensor(var, config)

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@ -11,6 +11,7 @@ from esphome.const import (
)
DEPENDENCIES = ["i2c"]
CODEOWNERS = ["@Azimath"]
tmp117_ns = cg.esphome_ns.namespace("tmp117")
TMP117Component = tmp117_ns.class_(

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@ -922,6 +922,11 @@ sensor:
id: ph_ezo
address: 99
unit_of_measurement: 'pH'
- platform: sdp3x
name: "HVAC Filter Pressure drop"
id: filter_pressure
update_interval: 5s
accuracy_decimals: 3
- platform: cs5460a
id: cs5460a1
current: