New component AIN4-20mA current measurement sensor

CODEOWNERS

@@ -24,6 +24,7 @@ esphome/components/ade7953_i2c/* @angelnu
 esphome/components/ade7953_spi/* @angelnu
 esphome/components/ads1118/* @solomondg1
 esphome/components/ags10/* @mak-42
+esphome/components/ain4_20ma/* @erikveg
 esphome/components/airthings_ble/* @jeromelaban
 esphome/components/airthings_wave_base/* @jeromelaban @kpfleming @ncareau
 esphome/components/airthings_wave_mini/* @ncareau

esphome/components/ain4_20ma/__init__.py

@@ -0,0 +1,2 @@
+CODEOWNERS = ["@erikveg"]
+DEPENDENCIES = ["i2c"]

esphome/components/ain4_20ma/ain4_20ma.cpp

@@ -0,0 +1,33 @@
+#include "ain4_20ma.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace ain4_20ma {
+
+static const char *const TAG = "ain4_20ma";
+
+void Ain420maComponent::dump_config() {
+  ESP_LOGCONFIG(TAG, "AIN4-20mA Sensor:");
+  LOG_I2C_DEVICE(this);
+  LOG_UPDATE_INTERVAL(this);
+  LOG_SENSOR("  ", "Sensor:", this);
+}
+
+void Ain420maComponent::update() {
+  uint8_t data[2];
+
+  i2c::ErrorCode err = this->read_register(0x20, data, 2);
+  if (err != i2c::ERROR_OK) {
+    ESP_LOGE(TAG, "Error reading data from AIN4-20mA");
+    this->publish_state(NAN);
+  } else {
+    uint16_t value;
+    value = data[0] | (data[1] << 8);
+    float current;
+    current = value / 100.0;
+    this->publish_state(current);
+  }
+}
+
+}  // namespace ain4_20ma
+}  // namespace esphome

esphome/components/ain4_20ma/ain4_20ma.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/i2c/i2c.h"
+
+namespace esphome {
+namespace ain4_20ma {
+
+class Ain420maComponent : public i2c::I2CDevice, public PollingComponent, public sensor::Sensor {
+ public:
+  float get_setup_priority() const override { return setup_priority::DATA; }
+  void dump_config() override;
+  void update() override;
+};
+
+}  // namespace ain4_20ma
+}  // namespace esphome

esphome/components/ain4_20ma/sensor.py

@@ -0,0 +1,33 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c, sensor
+from esphome.const import (
+    DEVICE_CLASS_CURRENT,
+    STATE_CLASS_MEASUREMENT,
+)
+
+DEPENDENCIES = ["i2c"]
+
+ain4_20ma_ns = cg.esphome_ns.namespace("ain4_20ma")
+
+Ain420maComponent = ain4_20ma_ns.class_(
+    "Ain420maComponent", cg.PollingComponent, i2c.I2CDevice, sensor.Sensor
+)
+
+CONFIG_SCHEMA = (
+    sensor.sensor_schema(
+        Ain420maComponent,
+        unit_of_measurement="mA",
+        accuracy_decimals=2,
+        device_class=DEVICE_CLASS_CURRENT,
+        state_class=STATE_CLASS_MEASUREMENT,
+    )
+    .extend(cv.polling_component_schema("60s"))
+    .extend(i2c.i2c_device_schema(default_address=0x55))
+)
+
+
+async def to_code(config):
+    var = await sensor.new_sensor(config)
+    await cg.register_component(var, config)
+    await i2c.register_i2c_device(var, config)

tests/components/ain4_20ma/test.esp32-c3-idf.yaml

@@ -0,0 +1,9 @@
+i2c:
+  - id: i2c_ain4_20ma
+    scl: 5
+    sda: 4
+
+sensor:
+  - platform: ain4_20ma
+    name: "Current"
+    update_interval: 60s

tests/components/ain4_20ma/test.esp32-c3.yaml

@@ -0,0 +1,9 @@
+i2c:
+  - id: i2c_ain4_20ma
+    scl: 5
+    sda: 4
+
+sensor:
+  - platform: ain4_20ma
+    name: "Current"
+    update_interval: 60s

tests/components/ain4_20ma/test.esp32-idf.yaml

@@ -0,0 +1,9 @@
+i2c:
+  - id: i2c_ain4_20ma
+    scl: 16
+    sda: 17
+
+sensor:
+  - platform: ain4_20ma
+    name: "Current"
+    update_interval: 60s

tests/components/ain4_20ma/test.esp32.yaml

@@ -0,0 +1,9 @@
+i2c:
+  - id: i2c_ain4_20ma
+    scl: 16
+    sda: 17
+
+sensor:
+  - platform: ain4_20ma
+    name: "Current"
+    update_interval: 60s

tests/components/ain4_20ma/test.esp8266.yaml

@@ -0,0 +1,9 @@
+i2c:
+  - id: i2c_ain4_20ma
+    scl: 5
+    sda: 4
+
+sensor:
+  - platform: ain4_20ma
+    name: "Current"
+    update_interval: 60s

tests/components/ain4_20ma/test.rp2040.yaml

@@ -0,0 +1,9 @@
+i2c:
+  - id: i2c_ain4_20ma
+    scl: 5
+    sda: 4
+
+sensor:
+  - platform: ain4_20ma
+    name: "Current"
+    update_interval: 60s