Solved it now.
I’ve got it totally working on my breadboard with my old ESP8266 still attached to the boiler and reporting to Home Assistant. So, as promised here’s the solution.
The autoexec.be is uploaded into the Tasmota File Management System
import haspmota
import string
haspmota.start()
tasmota.add_cmd('BoilerStats',
def (cmd, idx, payload, raw)
global.p1b35.text = string.format("%5.2fHrs",raw["Hours"])
global.p1b36.text = string.format("%5.2fL",raw["Oil"])
global.p1b37.text = string.format("%5.2fKWh",raw["KWh"])
global.p1b38.text = string.format("£%5.2f",raw["Cost"])
tasmota.resp_cmnd_done()
end)
This creates a new Command (BolierStats) which when received hands control to the function defined. All that does is load the variables coming in with the command in JSON format onto the objects set up on the screen using HASPmota.
HASPmota uses the pages.jsonl file which defines all the objects on the screen. One line per object and each object takes the reference Page Number and ID in the form p#bx (ie p1b35 - object ID 35 on Page 1). Here’s my file, it was a bit daunting but you get used to it
{"page":0,"comment":"---------- Upper stat line ----------"}
{"id":11,"obj":"label","x":0,"y":0,"w":320,"pad_right":90,"h":22,"bg_color":"#D00000","bg_opa":255,"text_color":"#ffffff","radius":0,"border_side":0,"text":"Boiler Stats","text_font":"montserrat-20"}
{"id":15,"obj":"lv_wifi_arcs","x":291,"y":0,"w":29,"h":22,"radius":0,"border_side":0,"bg_color":"#000000","line_color":"#FFFFFF"}
{"id":16,"obj":"lv_clock","x":232,"y":3,"w":55,"h":16,"radius":0,"border_side":0,"text_color":"#ffffff"}
{"page":1,"comment":"---------- Page 1 ----------"}
{"id":0,"bg_color":"#0000A0","bg_grad_color":"#000000","bg_grad_dir":1,"text_color":"#FFFFFF"}
{"id":19,"obj":"label","x":10,"y":30,"w":100,"text":"Local Readings","align":2}
{"id":20,"obj":"label","x":10,"y":50,"w":70,"text":"Outflow = ","align":2}
{"id":21,"obj":"label","x":10,"y":70,"w":70,"text":"Inflow = ","align":2}
{"id":22,"obj":"label","x":10,"y":90,"w":70,"text":"Cabinet = ","align":2}
{"id":23,"obj":"label","x":10,"y":110,"w":70,"text":"Demand = ","align":2}
{"id":24,"obj":"label","x":10,"y":130,"w":70,"text":"Burn = ","align":2}
{"id":25,"obj":"label","x":80,"y":50,"w":60,"align":0,"text_rule":"DS18B20-1#Temperature","text_rule_format":"%4.1f°C"}
{"id":26,"obj":"label","x":80,"y":70,"w":60,"align":0,"text_rule":"DS18B20-2#Temperature","text_rule_format":"%4.1f°C"}
{"id":27,"obj":"label","x":80,"y":90,"w":60,"align":0,"text_rule":"DS18B20-1#Temperature","text_rule_format":"%4.1f°C"}
{"id":28,"obj":"label","x":80,"y":110,"w":60,"align":0,"text_rule":"Switch1#Action","text_rule_format":"%s"}
{"id":29,"obj":"label","x":80,"y":130,"w":60,"align":0,"text_rule":"Switch1#Action","text_rule_format":"%s"}
{"id":30,"obj":"label","x":150,"y":30,"w":100,"text":"HA Stats","align":2}
{"id":31,"obj":"label","x":150,"y":50,"w":80,"text":"Run Time = ","align":2}
{"id":32,"obj":"label","x":150,"y":70,"w":80,"text":"Oil = ","align":2}
{"id":33,"obj":"label","x":150,"y":90,"w":80,"text":"Energy = ","align":2}
{"id":34,"obj":"label","x":150,"y":110,"w":80,"text":"Cost = ","align":2}
{"id":35,"obj":"label","x":230,"y":50,"w":90,"align":0,"text":"Waiting"}
{"id":36,"obj":"label","x":230,"y":70,"w":90,"align":0,"text":" for "}
{"id":37,"obj":"label","x":230,"y":90,"w":90,"align":0,"text":" next "}
{"id":38,"obj":"label","x":230,"y":110,"w":90,"align":0,"text":"report"}
I’ve separated the labels from the values. Some values get populated from Tasmota and its sensors direct, whilst the others from values calculated and sent by Home Assistant. The HA yaml for the automation that does the sending every 5 minutes is
alias: Boiler Report Stats
description: ""
trigger:
- platform: time_pattern
minutes: /5
condition: []
action:
- service: mqtt.publish
data:
qos: 0
retain: false
topic: cmnd/boilerdisplay/BoilerStats
payload_template: |-
{{ {"Hours": states('sensor.burn_time_by_day') | float(0),
"Oil": states('sensor.oil_litres_today') | float(0),
"KWh": states('sensor.oil_energy') | float(0),
"Cost": states('sensor.oil_cost_today') | float(0)} | tojson }}
mode: single
Note that ‘BoilerStats’ is the name of the command added to Tasmota in the autoexec.be file, and ‘boilerdisplay’ is the Topic declared in the Config MQTT page within Tasmota.
And that’s it. Simples. I will tweek this a bit when I actually install it but this should help others do similar.
This is the result
