Custom components

ESPHome
1

I am trying to install a DFRobot lux sensor, DFRobot_B_LUX_V30B as a custom component. The driver compiles and runs on a Arduino mini pro but when I compile under HA esphome it flags a error

In file included from src/main.cpp:30:
src/my_custom_sensor.h: In member function 'virtual void MyCustomSensor::setup()':
src/my_custom_sensor.h:11:5: error: invalid use of member function 'DFRobot_B_LUX_V30B MyCustomSensor::shedLux()' (did you forget the '()' ?)
   11 |     shedLux.begin();
      |     ^~~~~~~
      |            ()
src/my_custom_sensor.h: In member function 'virtual void MyCustomSensor::update()':
src/my_custom_sensor.h:15:23: error: invalid use of member function 'DFRobot_B_LUX_V30B MyCustomSensor::shedLux()' (did you forget the '()' ?)
   15 |     float outsideLux =shedLux.lightStrengthLux() ;
      |                       ^~~~~~~
      |                              ()
*** [.pioenvs/esphome-web-d02449/src/main.cpp.o] Error 1

The yaml configuration file is here

esphome:
  name: esphome-web-d02449
  friendly_name: Shed
  includes:
  - /config/esphome/lib/my_custom_sensor.h
   
esp8266:
  board: esp01_1m

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: xxxxx
  
ota:

i2c:
  scl: GPIO14
  sda: GPIO12

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  # could not get this to work in the shed when I changed the password
  # got cold will try again 
  ap:
    ssid: "Esphome-Web-D02449"
    password: xxxxxx

captive_portal:
    
# Example configuration entry

sensor:
- platform: custom
  lambda: |-
    auto my_sensor = new MyCustomSensor();
    App.register_component(my_sensor);
    return {my_sensor};

  sensors:
    name: "Outside Lux"
    unit_of_measurement: Lux
    accuracy_decimals: 2

and the custom include file is

include "esphome.h"
#include "/config/esphome/lib/DFRobot_B_LUX_V30B.h"

class MyCustomSensor : public PollingComponent, public Sensor {
 public:
  DFRobot_B_LUX_V30B    shedLux();  // GPIO16 is enable 14 scl, 12 sda

  MyCustomSensor() : PollingComponent(15000) { }

  void setup() override {
    shedLux.begin();
  }

  void update() override {
    float outsideLux =shedLux.lightStrengthLux() ;
    publish_state(outsideLux);
  }

Would appreciate some pointers of where I am going wrong. The target is an ESP8266

2

I guess you want to declare a member variable, here, so:

DFRobot_B_LUX_V30B    shedLux;
3

I declare a specific instance of DFRobot_B_LUX_V30B

Blockquote

#include "esphome.h"
#include "/config/esphome/lib/DFRobot_B_LUX_V30B.h"

class MyCustomSensor : public PollingComponent, public Sensor {

  public:
  DFRobot_B_LUX_V30B  shedLux(16);  // GPIO16 is enable 14 scl, 12 DFRobot_B_LU>

  MyCustomSensor() : PollingComponent(15000) { }

Blockquote

Error :

src/my_custom_sensor0.h:7:31: error: expected identifier before numeric constant
    7 |   DFRobot_B_LUX_V30B  shedLux(16);  // GPIO16 is enable 14 scl, 12 DFRobot_B_LUX_V30B  shedLux(16);  // GPIO16 is enable 14 scl, 12
      |

                               ^~