esphome
Initial value for global float variable not working
The problem
I have a global float variable i want to initialize with 0 and restore it:
globals:
- id: g_water_daily
type: float
restore_value: true
initial_value: "0.0"
On boot, i set the restored value to a template sensor:
esphome:
...
on_boot:
then:
- sensor.template.publish: # restore today
id: today
state: !lambda 'return id(g_water_daily);'
sensor:
- platform: template
name: "Heute"
id: today
icon: "mdi:water-plus"
unit_of_measurement: "L"
device_class: "water"
This doesn't work. The template sensor is always unknown after startup:
I also have a global int-variable that restores pulse counts, it works flawlessly. That's why i think the problem is the float type.
Also worth mentioning is, that the reset to 0.0 via globals.set works too.
Which version of ESPHome has the issue?
2024.6.6
What type of installation are you using?
Home Assistant Add-on
Which version of Home Assistant has the issue?
2024.6.1
What platform are you using?
ESP32
Board
Generic Esp32
Component causing the issue
globals
Example YAML snippet
esphome:
name: garten-wasserzahler
friendly_name: Garten Wasserzähler
on_boot:
then:
- pulse_meter.set_total_pulses: # restore pulses
id: pulse_meter_id
value: !lambda 'return id(g_total_pulses);'
- sensor.template.publish: # restore today
id: today
state: !lambda 'return id(g_water_daily);'
esp32:
board: esp32dev
framework:
type: esp-idf
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "xxx"
ota:
- platform: esphome
password: "xxx"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Garten-Wasserzahler"
captive_portal:
web_server:
port: 80
preferences:
flash_write_interval: 3h
globals:
- id: g_total_pulses
type: int
restore_value: true
initial_value: "1125000"
- id: g_water_daily
type: float
restore_value: true
initial_value: "0.0"
sensor:
- platform: pulse_meter
id: pulse_meter_id
internal_filter: 100ms
pin:
number: 13 # D13
inverted: true
mode:
input: true
pullup: true # Anschluss zwischen Pin und GND
name: "Durchfluss"
icon: "mdi:water"
unit_of_measurement: "L/h"
state_class: "measurement"
device_class: "volume_flow_rate"
timeout: 20s
accuracy_decimals: 0
filters:
- multiply: 30
total:
name: "Gesamt"
id: gesamt_id
icon: "mdi:water-circle"
unit_of_measurement: "L"
state_class: "total_increasing"
device_class: "water"
accuracy_decimals: 1
filters:
- multiply: 0.5
on_raw_value: # ignore filters
then:
- globals.set:
id: g_total_pulses
value: !lambda 'return id(gesamt_id).raw_state;'
- globals.set: # increase global today by 0.5 L per pulse
id: g_water_daily
value: !lambda 'return id(today).state + 0.5;'
- sensor.template.publish: # increase today by 0.5 L per pulse
id: today
state: !lambda 'return id(today).state + 0.5;'
- platform: template
name: "Heute"
id: today
icon: "mdi:water-plus"
unit_of_measurement: "L"
device_class: "water"
time:
- platform: homeassistant
id: homeassistant_time
on_time:
# Midnight
- seconds: 0
minutes: 0
hours: 0
then:
- sensor.template.publish: # reset today
id: today
state: 0
- globals.set: # reset global today
id: g_water_daily
value: "0.0"
Anything in the logs that might be useful for us?
No response
Additional information
No response
Thank you for the suggestion, nice idea.
It didn't changed anything, but in the log there was an error while resetting:
[21:07:31][I][factory_reset.button:013]: Resetting to factory defaults...
[21:07:31][D][esp32.preferences:176]: Cleaning up preferences in flash...
[21:07:31][I][app:132]: Rebooting safely...
[21:07:31][D][esp32.preferences:114]: Saving 1 preferences to flash...
[21:07:31][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 0 written, 1 failed
[21:07:31][E][esp32.preferences:146]: Error saving 1 preferences to flash. Last error=ESP_ERR_NVS_INVALID_HANDLE for key=233825507
INFO Processing expected disconnect from ESPHome API for garten-wasserzahler @ 192.168.66.123
WARNING Disconnected from API
INFO Successfully connected to garten-wasserzahler @ 192.168.66.123 in 2.073s
INFO Successful handshake with garten-wasserzahler @ 192.168.66.123 in 0.141s
[21:07:40][D][esp32.preferences:114]: Saving 1 preferences to flash...
[21:07:40][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
Is this a clue where the problem is?
Yes I had the same problem, and using factory reset button fixed it. Please refer to the "note" in the documentation
I did the factory reset at least two times. As i said, it didn't changed anything regarding the problem i posted. The template sensor, that should be initialized by the global float variable, that should be initialized with 0, is still unknown (int variable init still works).
I don't understand your hint to the note. There is nothing of importance in there for me, it only warns for lost data and wifi connection.
If you factory reset, it can't save the preference at reboot because you've deleted it. You can ignore that error. Watch the serial logs from boot to see what's happening with the template sensor.
Sorry I was imprecise, I only did the factory reset once manually, after that the problem was solved for me
If you factory reset, it can't save the preference at reboot because you've deleted it. You can ignore that error. Watch the serial logs from boot to see what's happening with the template sensor.
What exactly do you mean with serial log? I've added a restart button and this is the log via the esphome ui:
[22:54:44][D][button:010]: 'Restart' Pressed.
[22:54:44][I][restart.button:012]: Restarting device...
[22:54:44][I][app:132]: Rebooting safely...
[22:54:44][D][esp32.preferences:114]: Saving 1 preferences to flash...
[22:54:44][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
INFO Processing expected disconnect from ESPHome API for garten-wasserzahler @ 192.168.66.123
WARNING Disconnected from API
INFO Successfully connected to garten-wasserzahler @ 192.168.66.123 in 1.044s
INFO Successful handshake with garten-wasserzahler @ 192.168.66.123 in 0.177s
[22:54:51][C][restart.button:017]: Restart Button 'Restart'
[22:54:51][C][pulse_meter:108]: Pulse Meter 'Durchfluss'
[22:54:51][C][pulse_meter:108]: Device Class: 'volume_flow_rate'
[22:54:51][C][pulse_meter:108]: State Class: 'measurement'
[22:54:51][C][pulse_meter:108]: Unit of Measurement: 'L/h'
[22:54:51][C][pulse_meter:108]: Accuracy Decimals: 0
[22:54:51][C][pulse_meter:108]: Icon: 'mdi:water'
[22:54:51][C][pulse_meter:109]: Pin: GPIO13
[22:54:51][C][pulse_meter:111]: Filtering rising edges less than 100000 µs apart
[22:54:51][C][pulse_meter:116]: Assuming 0 pulses/min after not receiving a pulse for 20s
[22:54:51][C][homeassistant.time:010]: Home Assistant Time:
[22:54:51][C][homeassistant.time:011]: Timezone: 'CET-1CEST,M3.5.0,M10.5.0/3'
[22:54:51][C][captive_portal:088]: Captive Portal:
[22:54:51][C][web_server:173]: Web Server:
[22:54:51][C][web_server:174]: Address: garten-wasserzahler.local:80
[22:54:51][C][mdns:115]: mDNS:
[22:54:51][C][mdns:116]: Hostname: garten-wasserzahler
[22:54:51][C][esphome.ota:073]: Over-The-Air updates:
[22:54:51][C][esphome.ota:074]: Address: garten-wasserzahler.local:3232
[22:54:51][C][esphome.ota:075]: Version: 2
[22:54:51][C][esphome.ota:078]: Password configured
[22:54:51][C][safe_mode:018]: Safe Mode:
[22:54:51][C][safe_mode:020]: Boot considered successful after 60 seconds
[22:54:51][C][safe_mode:021]: Invoke after 10 boot attempts
[22:54:51][C][safe_mode:023]: Remain in safe mode for 300 seconds
[22:54:51][C][api:139]: API Server:
[22:54:51][C][api:140]: Address: garten-wasserzahler.local:6053
[22:54:51][C][api:142]: Using noise encryption: YES
[22:55:05][D][pulse_meter:095]: No pulse detected for 20s, assuming 0 pulses/min
[22:55:05][D][sensor:094]: 'Durchfluss': Sending state 0.00000 L/h with 0 decimals of accuracy
[22:55:45][I][safe_mode:041]: Boot seems successful; resetting boot loop counter
[22:55:45][D][esp32.preferences:114]: Saving 1 preferences to flash...
[22:55:45][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
Is that the right log? I don't see anything helpful. Or do you mean to connect via usb and check with a serial connection/terminal?
Or do you mean to connect via usb and check with a serial connection/terminal?
yes
Hm, i don't know why, but it works now as expected. As far as i am aware i didn't changed anything in the yaml. Strange.
Eh, i was to fast. After reset of the device the value is not restored.
Will try usb serial if i have the time for it.
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