Tasmota Smart Meter hardware watchdog reset

[de666]

PROBLEM DESCRIPTION

I compile and configure a wemos D1 mini to read from a modbus RTU power analyzer.
Everything is working good but I see cyclic restart (approx every 10 hours) caused by the hardware watchdog.

This is the smart meter script:

>D
>B
->sensor53 r
;->sensor53 d1
>M 1
+1,13,m,0,9600,,15,10,r010400000001,r010400030001,r010400070001,r010400140001,r0104001A0001,0104001D
1,010402SSss@i0:10,Tensione,V,Voltage,1
1,010402SSss@i1:100,Corrente,A,Current,2
1,010402SSss@i2:1,Potenza attiva,W,Power,0
1,010402SSss@i3:1000,Fattore di potenza,,Factor,3
1,010402SSss@i4:100,Frequenza,Hz,Frequency,2
1,010404S32@i5:100,Energia - totale,kWh,Energy,2
#

can you give me some help to figure out what's happening?
I'm not able to use the "standard" pins for UART (1/3) since they are bind to the CH340G.
I switch to the alternative serial pins (13/15) but I'm not really sure Tasmota has configured those pin as hardware serial and I don't know how to do it thrugh the scripting (smart meter) interface.

REQUESTED INFORMATION

Make sure your have performed every step and checked the applicable boxes before submitting your issue. Thank you!

• Read the Contributing Guide and Policy and the Code of Conduct
• Searched the problem in issues
• Searched the problem in discussions
• Searched the problem in the docs
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• Device used (e.g., Sonoff Basic): _____
• Tasmota binary firmware version number used: 13.2.0
  • Pre-compiled
  • Self-compiled
• Flashing tools used: tasmotizer
• Provide the output of command: Backlog Template; Module; GPIO 255:

  Configuration output here:
12:06:13.622 MQT: stat/tasmota_CF37B1/RESULT = {"NAME":"Generic","GPIO":[1,1,1,1,1,1,1,1,1,1,1,1,1,1],"FLAG":0,"BASE":18}
12:06:13.849 MQT: stat/tasmota_CF37B1/RESULT = {"Module":{"18":"Generic"}}
12:06:14.102 MQT: stat/tasmota_CF37B1/RESULT = {"GPIO0":{"0":"Nessuno"},"GPIO1":{"0":"Nessuno"},"GPIO2":{"320":"Led_i1"},"GPIO3":{"0":"Nessuno"},"GPIO4":{"0":"Nessuno"},"GPIO5":{"0":"Nessuno"},"GPIO9":{"0":"Nessuno"},"GPIO10":{"0":"Nessuno"},"GPIO12":{"0":"Nessuno"},"GPIO13":{"0":"Nessuno"},"GPIO14":{"0":"Nessuno"},"GPIO15":{"0":"Nessuno"},"GPIO16":{"0":"Nessuno"},"GPIO17":{"0":"Nessuno"}}

• If using rules, provide the output of this command: Backlog Rule1; Rule2; Rule3:

  Rules output here:

• Provide the output of this command: Status 0:

12:07:29.404 CMD: Status 0
12:07:29.412 MQT: stat/tasmota_CF37B1/STATUS = {"Status":{"Module":18,"DeviceName":"DDS669","FriendlyName":["Consumi"],"Topic":"tasmota_CF37B1","ButtonTopic":"0","Power":0,"PowerOnState":3,"LedState":1,"LedMask":"FFFF","SaveData":1,"SaveState":1,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0,"InfoRetain":0,"StateRetain":0,"StatusRetain":0}}
12:07:29.419 MQT: stat/tasmota_CF37B1/STATUS1 = {"StatusPRM":{"Baudrate":9600,"SerialConfig":"8N1","GroupTopic":"tasmotas","OtaUrl":"","RestartReason":"Hardware Watchdog","Uptime":"0T02:03:52","StartupUTC":"2023-12-06T09:03:37","Sleep":50,"CfgHolder":4617,"BootCount":70,"BCResetTime":"2023-10-28T16:48:42","SaveCount":1657,"SaveAddress":"3FB000"}}
12:07:29.426 MQT: stat/tasmota_CF37B1/STATUS2 = {"StatusFWR":{"Version":"13.2.0(sm)","BuildDateTime":"2023-11-25T11:50:46","Boot":31,"Core":"2_7_4_9","SDK":"2.2.2-dev(38a443e)","CpuFrequency":80,"Hardware":"ESP8266EX","CR":"336/699"}}
12:07:29.432 MQT: stat/tasmota_CF37B1/STATUS3 = {"StatusLOG":{"SerialLog":0,"WebLog":2,"MqttLog":0,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["xxxx","yyyy"],"TelePeriod":30,"Resolution":"558180C0","SetOption":["00008009","2805C80001000600003C5A0A192800000000","00000080","00006000","00004000","00000000"]}}
12:07:29.443 MQT: stat/tasmota_CF37B1/STATUS4 = {"StatusMEM":{"ProgramSize":577,"Free":1468,"Heap":14,"ProgramFlashSize":4096,"FlashSize":4096,"FlashChipId":"1640E0","FlashFrequency":40,"FlashMode":"DOUT","Features":["00000410","0700058A","04080001","00000003","00000000","00000008","00000080","00200000","04000000","00000080"],"Drivers":"1,2,4,9,10,12,38,50,62","Sensors":"1,53"}}
12:07:29.451 MQT: stat/tasmota_CF37B1/STATUS5 = {"StatusNET":{"Hostname":"tasmota-CF37B1-6065","IPAddress":"192.168.1.133","Gateway":"192.168.1.1","Subnetmask":"255.255.255.0","DNSServer1":"192.168.1.11","DNSServer2":"208.67.222.222","Mac":"18:FE:34:CF:37:B1","Webserver":2,"HTTP_API":1,"WifiConfig":4,"WifiPower":17.0}}
12:07:29.457 MQT: stat/tasmota_CF37B1/STATUS6 = {"StatusMQT":{"MqttHost":"mqtt.lan","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_CF37B1","MqttUser":"DVES_USER","MqttCount":1,"MAX_PACKET_SIZE":1200,"KEEPALIVE":30,"SOCKET_TIMEOUT":4}}
12:07:29.466 MQT: stat/tasmota_CF37B1/STATUS7 = {"StatusTIM":{"UTC":"2023-12-06T11:07:29","Local":"2023-12-06T12:07:29","StartDST":"2023-03-26T01:00:00","EndDST":"2023-10-29T01:00:00","Timezone":99,"Sunrise":"07:33","Sunset":"16:36"}}
12:07:29.474 MQT: stat/tasmota_CF37B1/STATUS10 = {"StatusSNS":{"Time":"2023-12-06T12:07:29","":{"Voltage":225.8,"Current":0.34,"Power":67,"Factor":0.848,"Frequency":50.00,"Energy":37.38}}}
12:07:29.483 MQT: stat/tasmota_CF37B1/STATUS11 = {"StatusSTS":{"Time":"2023-12-06T12:07:29","Uptime":"0T02:03:52","UptimeSec":7432,"Vcc":3.040,"Heap":14,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Wifi":{"AP":1,"SSId":"reteDcasa3","BSSId":"C8:7F:54:4E:99:90","Channel":9,"Mode":"11n","RSSI":100,"Signal":-36,"LinkCount":1,"Downtime":"0T00:00:03"}}}

• Set weblog to 4 and then, when you experience your issue, provide the output of the Console log:

  Console output here:

TO REPRODUCE

Steps to reproduce the behavior:

EXPECTED BEHAVIOUR

no hardware watchdog reset

SCREENSHOTS

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ADDITIONAL CONTEXT

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[sfromis]

One typical issue behind stalls (causing the watchdog to bite) is about bad 3.3V power to the ESP8266, and many D1 Mini clones have a paltry voltage regulator not suitable for delivering power to attached stuff, like Modbus adapters.

[de666]

Good point, I didn't think about it, I will try an external power supply for the 3.3V.
Thankyou very much.