[RTL8710BX] [T102_V1.1] [BL0937] Getting power monitoring to work

Question

espHome profile and documentation here Old post below: I have some of these plugs that I would like to use. So far I have managed to get espHome to work and switch the leds/relays. However, I have not been able to get the power monitoring (via the BL0937) to work. Using the hlw8012 ( sensor in...

SteIta · Answer

I have it with Esphome.
Unfortunately the platform is still hard, every now and then it goes into bootloop, when the power is removed, you have to make it do one or two bootloop cycles, unplug and reattach, then after a few more cycles it comes back online.


################             PART 1   for flashing                                     ############################
#                             calibration is not perfect                        #
substitutions:
  devicename: plug-meter-2 #change 
  deviceID: plug_meter_2 #change 
  restore_mode: RESTORE_DEFAULT_ON  # mode for when power is turned on
  wifi_update_interval: "60s"       # how often to report wifi signal strength
  hlw8012_voltage_divider:  "531"   # LOWER VALUE GIVES LOWER VOLTAGE old value 533
  hlw8012_current_resistor:  "0.001" # HIGHER VALUE GIVES LOWER WATTAGE 
  current_multiply: "1.0"

esphome:
  name: $devicename
  friendly_name: $deviceID

rtl87xx:
  board: wr2 # not correct but working relay P15
  #board: t102-v1.1 # true name but the relay P15 not working (bug?)
  #board: generic-rtl8710bn-2mb-788k #used for testing

# Enable logging
logger:
  #level: VERY_VERBOSE
  
# Enable Home Assistant API
api:
  encryption:
    key: "Put your"

ota:
  password: "Put your"

wifi: 
  #fixed ip doesn't work ?
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  power_save_mode: LIGHT
  use_address: Put your
  fast_connect: True

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Put your"
    password: "Put your"

captive_portal:

web_server:
  version: 1 # version 2/3 doesn't work

#mqtt: # not implement on this board
#  broker: !secret mqtt_broker
#  username: !secret mqtt_username 
#  password: !secret mqtt_password



debug:
  update_interval: 30s

text_sensor:
  - platform: debug
    reset_reason:
      name: Reset Reason
  - platform: libretiny
    version:
      name: LibreTiny Version
  - platform: wifi_info
    ip_address:
      name: IP Address
    ssid:
      name: SSID
    bssid:
      name: BSSID
    mac_address:
      name: MAC Address
    scan_results:
      name: Scan Results

button:
  - platform: factory_reset
    entity_category: DIAGNOSTIC
    icon: mdi:lock-reset
    name: "Restart with Factory Default Settings"
    id: Reset

  - platform: safe_mode
    entity_category: DIAGNOSTIC
    icon: mdi:restart-alert
    name: "Safe Mode"
    internal: false

binary_sensor:      
  - platform: gpio
    pin: P18
    name: $devicename button
    id:   ${deviceID}_button
    device_class: window
    # when button is pressed, toggle the switch on/off
    on_press:
      then:
        - switch.toggle: ${deviceID}_relay  # toggle the relay / switch
    internal: True


light:              
  - platform: status_led
    entity_category: DIAGNOSTIC
    name: $devicename Switch state Led Blue
    id:   ${deviceID}_led
    pin:
      number: P5
      inverted: true
    restore_mode: $restore_mode 
    #internal: True

switch:        
  - platform: gpio
    pin: P15
    icon: mdi:power-socket-eu
    name: $devicename relay
    id:   ${deviceID}_relay
    restore_mode: $restore_mode   # default when power is turned on
    # synchronise the LED with the relay
    on_turn_on:
      then:
        - light.turn_on: ${deviceID}_led
    on_turn_off:
      then:
        - light.turn_off: ${deviceID}_led
  - platform: restart
    #entity_category: DIAGNOSTIC
    name: $devicename Restart

sensor:
  - platform: wifi_signal         # report wi-fi signal strength from this end
    name: $devicename WiFi Signal
    id:   ${deviceID}_wifi_signal
    update_interval: 120s    # how often to report wifi signal strength 
  - platform: uptime
    name: Uptime
    device_class: "duration"
    unit_of_measurement: s
    accuracy_decimals: 0
    update_interval: 120s
################             PART 2   for flashing                                     ############################
# part 2 add this part after flashing the first part,
#1 Flash part 2
#2 Press "Restart with Factory Default Settings"
#3 powercicle,some time you have to wait 2 to 4 hours to get it back online and working
  - platform: hlw8012
    model: BL0937
    sel_pin:   # returns Voltage and Current periodically
      number: 14
      inverted: true
    cf_pin: 0
    cf1_pin: 12
    current: # wait for expose in HomeAssitant on reboot!
      name: $devicename Current
      id: "Current"
      accuracy_decimals: 3
      filters:
        - multiply: ${current_multiply}
    voltage:
      name: $devicename Voltage
      id: "Volt"
    power:
      name: $devicename Power
      id: BL0937_Power 
      accuracy_decimals: 2
    update_interval: 10s
    voltage_divider:  $hlw8012_voltage_divider    
    current_resistor: $hlw8012_current_resistor 
    
# config 1
#  - platform: total_daily_energy
#    name: $devicename Total Daily Energy
#    power_id: BL0937_Power
#    unit_of_measurement: 'kWh'
#    state_class: total_increasing
#    icon: mdi:lightning-bolt-circle
#    device_class: energy
#    accuracy_decimals: 3
#    filters:
      # Multiplication factor from W to kW is 0.001
#      - multiply: 0.001  

# config 2
  - platform: integration
    name: "Daily Consumption"
    id: "total_energy_day" 
    sensor: BL0937_Power
    time_unit: h
    device_class: "energy"
    state_class: "total_increasing"
    icon: mdi:lightning-bolt-circle
    unit_of_measurement: kWh
    accuracy_decimals: 3
    restore: false #If true, save the reading to the flash memory to prevent data loss in case of power loss
    filters:
      - multiply: 0.001
  - platform: integration
    name: "Weekly Consumption"
    id: "total_energy_week"
    sensor: BL0937_Power
    time_unit: h
    device_class: "energy"
    state_class: "total_increasing"
    icon: mdi:lightning-bolt-circle
    unit_of_measurement: kWh
    accuracy_decimals: 3
    restore: false #If true, save the reading to the flash memory to prevent data loss in case of power loss
    filters:
      - multiply: 0.001
  - platform: integration
    name: "Monthly Consumption"
    id: "total_energy_month"
    sensor: BL0937_Power
    time_unit: h
    device_class: "energy"
    state_class: "total_increasing"
    icon: mdi:lightning-bolt-circle
    unit_of_measurement: kWh
    accuracy_decimals: 3
    restore: false #If true, save the reading to the flash memory to prevent data loss in case of power loss
    filters:
      - multiply: 0.001 

  - platform: template
    name: $devicename Power Factor
    lambda: |-
      return id(BL0937_Power).state / (id(Volt).state * id(Current).state);
    update_interval: 5s
    accuracy_decimals: 2
    unit_of_measurement: "CosPhi"
    icon: "mdi:angle-acute"
    filters:
      - or:
        - throttle: 60s
        - delta: 3.0
  - platform: template
    name: $devicename Apparent Power
    lambda: |-
      return id(Volt).state * id(Current).state;
    update_interval: 5s
    accuracy_decimals: 1
    unit_of_measurement: "VA"
    icon: "mdi:speedometer"
    filters:
      - or:
        - throttle: 60s
        - delta: 3.0

time:
  - platform: sntp
    id: sntp_time
    timezone: Europe/Rome #change
    servers:
     - 0.pool.ntp.org
     - 1.pool.ntp.org
     - 2.pool.ntp.org
    on_time:
      # Every Month at specified day
      - seconds: 0
        minutes: 0
        hours: 0
        days_of_month: 1
        then:
          - sensor.integration.reset: total_energy_month #Reset power integrator
      # Every Week at specified day
      - seconds: 0
        minutes: 0
        hours: 0
        days_of_week: MON
        then:
          - sensor.integration.reset: total_energy_week #Reset power integrator
      # Every Day at specified hour
      - seconds: 0
        minutes: 0
        hours: 0
        then:
          - sensor.integration.reset: total_energy_day #Reset power integrator 
#  - platform: homeassistant
#    id: homeassistant_time

so_meone · Answer

I already got it working, see my last edit. The boot loop you are experiencing is probably related to did you try that workaround?

SteIta · Answer

I haven't figured out how to implement it, do I need to recompile libretiny?

so_meone · Answer

Just find the file wiring_irq.c and modify it.
It should be in "%userprofile%\.platformio\platforms\libretiny@1.4.1\cores\realtek-amb\arduino\src\wiring_irq.c" (or something similar depending on os and version of libretiny used)
Theres a #if block which throws the error at line 64.
Editing it to use IRQ_RISE(or FALL) instead of failing works around this problem with pulse_counter, it will probably change the returned pulse count as well but this is handled by the calibration.

Before:

#if LT_RTL8720C
			event = IRQ_FALL_RISE;
#else
			LT_W("CHANGE interrupts not supported");
#endif

After:

#if LT_RTL8720C
			event = IRQ_FALL_RISE;
#else
			event = IRQ_RISE; //hack
#endif

SteIta · Answer

Ok, i changed the file, but i'm not able to using PlatformIO, Then I'll try in a few days. You've looked at my yalm, it works pretty well.

Raufaser · Answer

Hi.I order this RTL8710BX smart socket for 2,50€ in sale a few days ago and it arrived today. I was surprised, that it has this rather exotic chip. So I am in for some testing. And hopefully OpenBeken development for this chip will continue someday :)

t2004dd · Answer

>>21015008Hi!I have T102-V1.1 with RTL8710BX chip. According ESPHome boards list T102-V1.1 has RTL8710BN chip. BX clocked at 62.5 MHz (instead of 125 MHz for BN). I think this is important or?I don't know, if this is reason, but board can not connect to WIFI. [wifi:303]: WiFi Connecting to 'ov593'...E [33.201] WIFI: Connection failed; ret=-1[W][wifilt:117]: esp_wifi_connect failed! 4[E][wifi:349]: wifi_sta_connect failed![W][wifi_lt:286]: Event: Disconnected ssid='' bssid=00:00:00:00:00:00 reason='Unspecified'Do you have any idea?

SteIta · Answer

It would seem to be a problem of MAC address, wrapped with flash, this is deleted. I also find it when I switch from ESPHome to OpenBeken, with other devices. You should try reflashing the original firmware, rebooting to see if it connects, and reflashing ESPHome.

t2004dd · Answer

Do you mean re-flash back original FW and find MAC address in it?
In ESPHome FW I have:

[21:18:51][C][wifi:038]: Setting up WiFi...
[21:18:51][C][wifi:051]: Starting WiFi...
[21:18:51][C][wifi:052]:   Local MAC: D8:D6:68:AA:C0:17

Btw, AP is working and I can connect to it from PC and open WEB site vers. 1 by 192.168.4.1.

SteIta · Answer

Yes, because sometimes it happens that the partition with the MAC address is deleted, and then the router rejects the connection.
It would appear that your MAC is intact.
In some of my devices, it happened instead that on ESPHome I put an address but the router assigned another one.
You could also try restarting the router, or not configuring any address on ESPHome, and having it assigned by the router.

t2004dd · Answer

I read the original FW, but it is 2MB, just the size of the external flash memory. I don't know how to write it back. Could you please give me some tips? Seems it is not OTA or UF2 format and just binary image of the memory or ltchiptool is working with full dumps too ?

SteIta · Answer

No ota, no uf2.The bin file is exactly, You can flash it like you did the first time:

t2004dd · Answer

1) I flashed back original FW. See log attached. Found in WIFI list AP and managed connect to it.
2) Flashed again ESPHome with YAML described in this topic. The same result, I can not connect to WIFI and boards reloads non stop.


[I][wifi:303]: WiFi Connecting to 'ov593'...
E [     32.873] WIFI: Connection failed; ret=-1
[W][wifi_lt:117]: esp_wifi_connect failed! 4
[E][wifi:349]: wifi_sta_connect_ failed!
[W][wifi_lt:286][wifievent]: Event: Disconnected ssid='' bssid=00:00:00:00:00:00 reason='Unspecified'
[D][hlw8012:076]: Got power=0.0W, current=0.0A
[D][sensor:093]: 'Current': Sending state 0.00000 A with 2 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:076]: Got power=0.0W, current=0.0A
[D][sensor:093]: 'Current': Sending state 0.00000 A with 2 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:076]: Got power=0.0W, current=0.0A
[D][sensor:093]: 'Current': Sending state 0.00000 A with 2 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[I][wifi:303]: WiFi Connecting to 'ov593'...
E [     42.408] WIFI: Connection failed; ret=-1
[W][wifi_lt:117]: esp_wifi_connect failed! 4
[E][wifi:349]: wifi_sta_connect_ failed!
[W][wifi_lt:286][wifievent]: Event: Disconnected ssid='' bssid=00:00:00:00:00:00 reason='Unspecified'
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[I][wifi:303]: WiFi Connecting to 'ov593'...
E [     51.941] WIFI: Connection failed; ret=-1
[W][wifi_lt:117]: esp_wifi_connect failed! 4
[E][wifi:349]: wifi_sta_connect_ failed!
[W][wifi_lt:286][wifievent]: Event: Disconnected ssid='' bssid=00:00:00:00
LwIP_DHCP: dhcp stop.
Deinitializing WIFI ...:00:00 reason='Unspecified'

WIFI deinitialized[W][wifi_lt:286][wifievent]: Event: Disconnected ssid='' bssid=00:00:00:00:00:00 reason='Unspecified'
[D][hlw8012:082]: Got power=0.0W, voltage=0.0V
[D][sensor:093]: 'Voltage': Sending state 0.00000 V with 1 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy
[D][sensor:093]: 'Power': Sending state 0.00000 W with 1 decimals of accuracy
[D][sensor:093]: 'Total Daily Energy': Sending state 0.00000 kWh with 3 decimals of accuracy

SteIta · Answer

You have to double-check everything from the beginning, even the most trivial things.
Have you reassembled the socket? (I have a couple of plugs with different chips and one of them only connected after I reassembled it, I don't remember if it was this chip).
Try separating and networking on your 2.4/5 GHz router.
Double-check your password and network name.
Try editing esphome yaml as well:


wifi: 
  ssid: !secret wifi_ssid  # your
  password: !secret wifi_password  # your
  power_save_mode: LIGHT
  use_address: 192.168.43.100 # assigned by your router
  fast_connect: True
web_server:
  version: 3 # or 1 or 2
mdns:
text_sensor:
# if You can log in on the web server you can see if you have the Mac
  - platform: debug
    reset_reason:
      name: Reset Reason
  - platform: libretiny
    version:
      name: LibreTiny Version
  - platform: wifi_info
    ip_address:
      name: IP Address
    ssid:
      name: SSID
    bssid:
      name: BSSID
    mac_address:
      name: MAC Address
    scan_results:
      name: Scan Results

t2004dd · Answer

LibreTiny has example PinScan with WIFI connection. I flashed it and I have the same bad result.

WIFI initialized
I [      0.264] WIFI: Starting WiFi scan
I [      0.270] WIFI: Waiting for results
I [      1.573] WIFI: Scan finished
I [      1.577] WIFI: 14 networks found
I [      1.581] WIFI: Connecting to BSSID: 60:E3:27:4F:D4:1B SSID: ov593 Channel: 13 (-52)
I [      1.589] WIFI: Connecting to ov593 (bssid=0x10016938)
E [      8.943] WIFI: Connection failed; ret=-1
E [     18.957] WIFI: Connecting failed (6)
WiFi connection failed, retrying in 5s

Added after 1 [hours] 10 [minutes]:

We can close my issue. I examined the board under a microscope and found a ball of solder on one of the chip legs. I removed it and everything worked. Thanks for your help.

[RTL8710BX] [T102_V1.1] [BL0937] Getting power monitoring to work

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