Change component name to aj_sr04m

esphome/components/aj_sr04m/aj_sr04m.cpp

@@ -0,0 +1,32 @@
+#include "aj_sr04m.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace aj_sr04m {
+
+static const char *const TAG = "aj_sr04m.sensor";
+
+void Ajsr04mComponent::setup() { ESP_LOGCONFIG(TAG, "Setting up AJ_SR04M Sensor..."); }
+void Ajsr04mComponent::update() {
+  this->write(0x55);
+  ESP_LOGV(TAG, "Request read out from sensor");
+
+  while (this->available() == 4) {
+    auto frame = *this->read_array<4>();
+    auto checksum = (frame[0] + frame[1] + frame[2]) & 0x00FF;
+    if ((frame[0] == 0xFF) && (checksum == frame[3])) {
+      float value = ((frame[1] << 8) + frame[2]) / 1000.0;
+      this->publish_state(value);
+    } else {
+      ESP_LOGW(TAG, "checksum failed: %02x != %02x", checksum, frame[3]);
+    }
+  }
+
+}
+void Ajsr04mComponent::dump_config() {
+  LOG_SENSOR("", "AJ_SR04M Sensor", this);
+  LOG_UPDATE_INTERVAL(this);
+}
+float Ajsr04mComponent::get_setup_priority() const { return setup_priority::DATA; }
+}  // namespace aj_sr04m
+}  // namespace esphome

esphome/components/aj_sr04m/aj_sr04m.h

@@ -5,9 +5,9 @@
 #include "esphome/components/uart/uart.h"
 
 namespace esphome {
-namespace ultrasonic_uart {
+namespace aj_sr04m {
 
-class UltrasonicSensorUart : public sensor::Sensor, public PollingComponent, public uart::UARTDevice {
+class Ajsr04mComponent : public sensor::Sensor, public PollingComponent, public uart::UARTDevice {
  public:
   void setup() override;
   void dump_config() override;
@@ -17,5 +17,5 @@ class UltrasonicSensorUart : public sensor::Sensor, public PollingComponent, pub
   float get_setup_priority() const override;
 };
 
-}  // namespace ultrasonic_uart
+}  // namespace aj_sr04m
 }  // namespace esphome

esphome/components/aj_sr04m/sensor.py

@@ -3,16 +3,16 @@ import esphome.config_validation as cv
 from esphome.components import sensor, uart
 from esphome.const import (
     STATE_CLASS_MEASUREMENT,
-    UNIT_CENTIMETER,
+    UNIT_METER,
     ICON_ARROW_EXPAND_VERTICAL,
     DEVICE_CLASS_DISTANCE,
 )
 
 DEPENDENCIES = ["uart"]
 
-ultrasonic_uart_ns = cg.esphome_ns.namespace("ultrasonic_uart")
+aj_sr04m_ns = cg.esphome_ns.namespace("aj_sr04m")
-UltrasonicSensorUart = ultrasonic_uart_ns.class_(
+Ajsr04mComponent = aj_sr04m_ns.class_(
-    "UltrasonicSensorUart",
+    "Ajsr04mComponent",
     sensor.Sensor,
     cg.PollingComponent,
     uart.UARTDevice,
@@ -20,10 +20,10 @@ UltrasonicSensorUart = ultrasonic_uart_ns.class_(
 
 CONFIG_SCHEMA = (
     sensor.sensor_schema(
-        UltrasonicSensorUart,
+        Ajsr04mComponent,
-        unit_of_measurement=UNIT_CENTIMETER,
+        unit_of_measurement=UNIT_METER,
         icon=ICON_ARROW_EXPAND_VERTICAL,
-        accuracy_decimals=2,
+        accuracy_decimals=3,
         state_class=STATE_CLASS_MEASUREMENT,
         device_class=DEVICE_CLASS_DISTANCE,
     )
@@ -32,7 +32,7 @@ CONFIG_SCHEMA = (
 )
 
 FINAL_VALIDATE_SCHEMA = uart.final_validate_device_schema(
-    "ultrasonic_uart",
+    "aj_sr04m",
     baud_rate=9600,
     require_tx=True,
     require_rx=True,

esphome/components/ultrasonic_uart/ultrasonic_sensor.cpp

@@ -1,26 +0,0 @@
-#include "ultrasonic_sensor.h"
-#include "esphome/core/log.h"
-
-namespace esphome {
-namespace ultrasonic_uart {
-
-static const char *const TAG = "ultrasonic_uart";
-
-void UltrasonicSensorUart::setup() { ESP_LOGCONFIG(TAG, "Setting up Ultrasonic Sensor..."); }
-void UltrasonicSensorUart::update() {
-  this->write(0x55);
-  while (this->available() == 4) {
-    auto frame = *this->read_array<4>();
-    if ((frame[0] == 0xFF) && (((frame[0] + frame[1] + frame[2]) & 0x00FF) == frame[3])) {
-      float value = ((frame[1] << 8) + frame[2]) / 10.0;
-      this->publish_state(value);
-    }
-  }
-}
-void UltrasonicSensorUart::dump_config() {
-  LOG_SENSOR("", "Ultrasonic Sensor", this);
-  LOG_UPDATE_INTERVAL(this);
-}
-float UltrasonicSensorUart::get_setup_priority() const { return setup_priority::DATA; }
-}  // namespace ultrasonic_uart
-}  // namespace esphome