Add support for BL0942 voltage, current, energy and power Sensor (#3777)

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David Buezas 2022-09-11 23:36:09 +02:00 committed by GitHub
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6 changed files with 296 additions and 0 deletions

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@ -35,6 +35,7 @@ esphome/components/bh1750/* @OttoWinter
esphome/components/binary_sensor/* @esphome/core esphome/components/binary_sensor/* @esphome/core
esphome/components/bl0939/* @ziceva esphome/components/bl0939/* @ziceva
esphome/components/bl0940/* @tobias- esphome/components/bl0940/* @tobias-
esphome/components/bl0942/* @dbuezas
esphome/components/ble_client/* @buxtronix esphome/components/ble_client/* @buxtronix
esphome/components/bluetooth_proxy/* @jesserockz esphome/components/bluetooth_proxy/* @jesserockz
esphome/components/bme680_bsec/* @trvrnrth esphome/components/bme680_bsec/* @trvrnrth

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@ -0,0 +1 @@
CODEOWNERS = ["@dbuezas"]

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@ -0,0 +1,121 @@
#include "bl0942.h"
#include "esphome/core/log.h"
namespace esphome {
namespace bl0942 {
static const char *const TAG = "bl0942";
static const uint8_t BL0942_READ_COMMAND = 0x58;
static const uint8_t BL0942_FULL_PACKET = 0xAA;
static const uint8_t BL0942_PACKET_HEADER = 0x55;
static const uint8_t BL0942_WRITE_COMMAND = 0xA8;
static const uint8_t BL0942_REG_I_FAST_RMS_CTRL = 0x10;
static const uint8_t BL0942_REG_MODE = 0x18;
static const uint8_t BL0942_REG_SOFT_RESET = 0x19;
static const uint8_t BL0942_REG_USR_WRPROT = 0x1A;
static const uint8_t BL0942_REG_TPS_CTRL = 0x1B;
// TODO: Confirm insialisation works as intended
const uint8_t BL0942_INIT[5][6] = {
// Reset to default
{BL0942_WRITE_COMMAND, BL0942_REG_SOFT_RESET, 0x5A, 0x5A, 0x5A, 0x38},
// Enable User Operation Write
{BL0942_WRITE_COMMAND, BL0942_REG_USR_WRPROT, 0x55, 0x00, 0x00, 0xF0},
// 0x0100 = CF_UNABLE energy pulse, AC_FREQ_SEL 50Hz, RMS_UPDATE_SEL 800mS
{BL0942_WRITE_COMMAND, BL0942_REG_MODE, 0x00, 0x10, 0x00, 0x37},
// 0x47FF = Over-current and leakage alarm on, Automatic temperature measurement, Interval 100mS
{BL0942_WRITE_COMMAND, BL0942_REG_TPS_CTRL, 0xFF, 0x47, 0x00, 0xFE},
// 0x181C = Half cycle, Fast RMS threshold 6172
{BL0942_WRITE_COMMAND, BL0942_REG_I_FAST_RMS_CTRL, 0x1C, 0x18, 0x00, 0x1B}};
void BL0942::loop() {
DataPacket buffer;
if (!this->available()) {
return;
}
if (read_array((uint8_t *) &buffer, sizeof(buffer))) {
if (validate_checksum(&buffer)) {
received_package_(&buffer);
}
} else {
ESP_LOGW(TAG, "Junk on wire. Throwing away partial message");
while (read() >= 0)
;
}
}
bool BL0942::validate_checksum(DataPacket *data) {
uint8_t checksum = BL0942_READ_COMMAND;
// Whole package but checksum
uint8_t *raw = (uint8_t *) data;
for (uint32_t i = 0; i < sizeof(*data) - 1; i++) {
checksum += raw[i];
}
checksum ^= 0xFF;
if (checksum != data->checksum) {
ESP_LOGW(TAG, "BL0942 invalid checksum! 0x%02X != 0x%02X", checksum, data->checksum);
}
return checksum == data->checksum;
}
void BL0942::update() {
this->flush();
this->write_byte(BL0942_READ_COMMAND);
this->write_byte(BL0942_FULL_PACKET);
}
void BL0942::setup() {
for (auto *i : BL0942_INIT) {
this->write_array(i, 6);
delay(1);
}
this->flush();
}
void BL0942::received_package_(DataPacket *data) {
// Bad header
if (data->frame_header != BL0942_PACKET_HEADER) {
ESP_LOGI(TAG, "Invalid data. Header mismatch: %d", data->frame_header);
return;
}
float v_rms = (uint24_t) data->v_rms / voltage_reference_;
float i_rms = (uint24_t) data->i_rms / current_reference_;
float watt = (int24_t) data->watt / power_reference_;
uint32_t cf_cnt = (uint24_t) data->cf_cnt;
float total_energy_consumption = cf_cnt / energy_reference_;
float frequency = 1000000.0f / data->frequency;
if (voltage_sensor_ != nullptr) {
voltage_sensor_->publish_state(v_rms);
}
if (current_sensor_ != nullptr) {
current_sensor_->publish_state(i_rms);
}
if (power_sensor_ != nullptr) {
power_sensor_->publish_state(watt);
}
if (energy_sensor_ != nullptr) {
energy_sensor_->publish_state(total_energy_consumption);
}
if (frequency_sensor_ != nullptr) {
frequency_sensor_->publish_state(frequency);
}
ESP_LOGV(TAG, "BL0942: U %fV, I %fA, P %fW, Cnt %d, ∫P %fkWh, frequency %f°Hz, status 0x%08X", v_rms, i_rms, watt,
cf_cnt, total_energy_consumption, frequency, data->status);
}
void BL0942::dump_config() { // NOLINT(readability-function-cognitive-complexity)
ESP_LOGCONFIG(TAG, "BL0942:");
LOG_SENSOR("", "Voltage", this->voltage_sensor_);
LOG_SENSOR("", "Current", this->current_sensor_);
LOG_SENSOR("", "Power", this->power_sensor_);
LOG_SENSOR("", "Energy", this->energy_sensor_);
LOG_SENSOR("", "frequency", this->frequency_sensor_);
}
} // namespace bl0942
} // namespace esphome

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#pragma once
#include "esphome/core/component.h"
#include "esphome/core/datatypes.h"
#include "esphome/components/uart/uart.h"
#include "esphome/components/sensor/sensor.h"
namespace esphome {
namespace bl0942 {
static const float BL0942_PREF = 596; // taken from tasmota
static const float BL0942_UREF = 15873.35944299; // should be 73989/1.218
static const float BL0942_IREF = 251213.46469622; // 305978/1.218
static const float BL0942_EREF = 3304.61127328; // Measured
struct DataPacket {
uint8_t frame_header;
uint24_le_t i_rms;
uint24_le_t v_rms;
uint24_le_t i_fast_rms;
int24_le_t watt;
uint24_le_t cf_cnt;
uint16_le_t frequency;
uint8_t reserved1;
uint8_t status;
uint8_t reserved2;
uint8_t reserved3;
uint8_t checksum;
} __attribute__((packed));
class BL0942 : public PollingComponent, public uart::UARTDevice {
public:
void set_voltage_sensor(sensor::Sensor *voltage_sensor) { voltage_sensor_ = voltage_sensor; }
void set_current_sensor(sensor::Sensor *current_sensor) { current_sensor_ = current_sensor; }
void set_power_sensor(sensor::Sensor *power_sensor) { power_sensor_ = power_sensor; }
void set_energy_sensor(sensor::Sensor *energy_sensor) { energy_sensor_ = energy_sensor; }
void set_frequency_sensor(sensor::Sensor *frequency_sensor) { frequency_sensor_ = frequency_sensor; }
void loop() override;
void update() override;
void setup() override;
void dump_config() override;
protected:
sensor::Sensor *voltage_sensor_;
sensor::Sensor *current_sensor_;
// NB This may be negative as the circuits is seemingly able to measure
// power in both directions
sensor::Sensor *power_sensor_;
sensor::Sensor *energy_sensor_;
sensor::Sensor *frequency_sensor_;
// Divide by this to turn into Watt
float power_reference_ = BL0942_PREF;
// Divide by this to turn into Volt
float voltage_reference_ = BL0942_UREF;
// Divide by this to turn into Ampere
float current_reference_ = BL0942_IREF;
// Divide by this to turn into kWh
float energy_reference_ = BL0942_EREF;
static bool validate_checksum(DataPacket *data);
void received_package_(DataPacket *data);
};
} // namespace bl0942
} // namespace esphome

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@ -0,0 +1,93 @@
import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import sensor, uart
from esphome.const import (
CONF_CURRENT,
CONF_ENERGY,
CONF_ID,
CONF_POWER,
CONF_VOLTAGE,
CONF_FREQUENCY,
DEVICE_CLASS_CURRENT,
DEVICE_CLASS_ENERGY,
DEVICE_CLASS_POWER,
DEVICE_CLASS_VOLTAGE,
DEVICE_CLASS_FREQUENCY,
STATE_CLASS_MEASUREMENT,
UNIT_AMPERE,
UNIT_KILOWATT_HOURS,
UNIT_VOLT,
UNIT_WATT,
UNIT_HERTZ,
)
DEPENDENCIES = ["uart"]
bl0942_ns = cg.esphome_ns.namespace("bl0942")
BL0942 = bl0942_ns.class_("BL0942", cg.PollingComponent, uart.UARTDevice)
CONFIG_SCHEMA = (
cv.Schema(
{
cv.GenerateID(): cv.declare_id(BL0942),
cv.Optional(CONF_VOLTAGE): sensor.sensor_schema(
unit_of_measurement=UNIT_VOLT,
accuracy_decimals=1,
device_class=DEVICE_CLASS_VOLTAGE,
state_class=STATE_CLASS_MEASUREMENT,
),
cv.Optional(CONF_CURRENT): sensor.sensor_schema(
unit_of_measurement=UNIT_AMPERE,
accuracy_decimals=2,
device_class=DEVICE_CLASS_CURRENT,
state_class=STATE_CLASS_MEASUREMENT,
),
cv.Optional(CONF_POWER): sensor.sensor_schema(
unit_of_measurement=UNIT_WATT,
accuracy_decimals=0,
device_class=DEVICE_CLASS_POWER,
state_class=STATE_CLASS_MEASUREMENT,
),
cv.Optional(CONF_ENERGY): sensor.sensor_schema(
unit_of_measurement=UNIT_KILOWATT_HOURS,
accuracy_decimals=0,
device_class=DEVICE_CLASS_ENERGY,
),
cv.Optional(CONF_FREQUENCY): sensor.sensor_schema(
unit_of_measurement=UNIT_HERTZ,
accuracy_decimals=0,
device_class=DEVICE_CLASS_FREQUENCY,
state_class=STATE_CLASS_MEASUREMENT,
),
}
)
.extend(cv.polling_component_schema("60s"))
.extend(uart.UART_DEVICE_SCHEMA)
)
async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await cg.register_component(var, config)
await uart.register_uart_device(var, config)
if CONF_VOLTAGE in config:
conf = config[CONF_VOLTAGE]
sens = await sensor.new_sensor(conf)
cg.add(var.set_voltage_sensor(sens))
if CONF_CURRENT in config:
conf = config[CONF_CURRENT]
sens = await sensor.new_sensor(conf)
cg.add(var.set_current_sensor(sens))
if CONF_POWER in config:
conf = config[CONF_POWER]
sens = await sensor.new_sensor(conf)
cg.add(var.set_power_sensor(sens))
if CONF_ENERGY in config:
conf = config[CONF_ENERGY]
sens = await sensor.new_sensor(conf)
cg.add(var.set_energy_sensor(sens))
if CONF_FREQUENCY in config:
conf = config[CONF_FREQUENCY]
sens = await sensor.new_sensor(conf)
cg.add(var.set_frequency_sensor(sens))

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@ -530,6 +530,18 @@ sensor:
name: BL0940 Internal temperature name: BL0940 Internal temperature
external_temperature: external_temperature:
name: BL0940 External temperature name: BL0940 External temperature
- platform: bl0942
uart_id: uart3
voltage:
name: 'BL0942 Voltage'
current:
name: 'BL0942 Current'
power:
name: 'BL0942 Power'
energy:
name: 'BL0942 Energy'
frequency:
name: "BL0942 Frequency"
- platform: pzem004t - platform: pzem004t
uart_id: uart3 uart_id: uart3
voltage: voltage: