Fallback topic is different between 6.4.1.18 Core_2.4.2 and Core_2.5.0

[wongnam]

Describe the bug
I found that my Sonoff "Fallback_topic" is changed if i flashed it to 6.1.4.18 Core_2.5.0, It's normal with 6.4.1.18 Core_2.4.2

It changed from "FallbackTopic":"cmnd/DVES_0F86C9_fb/" to "FallbackTopic":"cmnd/DVES_0F86C9C9_fb/"

Also, make sure these boxes are checked [x] before submitting your issue - Thank you!

• Searched the problem in issues and in the wiki Yes
• Hardware used : Sonoff S22
• Development/Compiler/Upload tools used : VSC + PlatformIO
• If a pre-compiled release or development binary was used, which one? : Self_compile
• You have tried latest release or development binaries? : Dev version 6.4.1.18 Core_2.5.0
• Provide the output of commandstatus 0 :

00:00:00 Project sonoff Sonoff Version 6.4.1.18(sonoff)-2_5_0
00:00:00 WIF: Connecting to AP1 iot-2 in mode 11N as sonoff-1737...
00:00:04 WIF: Connected
00:00:04 HTP: Web server active on sonoff-1737 with IP address 192.168.12.111
17:33:19 MQT: Attempting connection...
17:33:19 MQT: Connected
17:33:19 MQT: tele/sonoff/LWT = Online (retained)
17:33:19 MQT: cmnd/sonoff/POWER = 
17:33:19 MQT: tele/sonoff/INFO1 = {"Module":"Sonoff TH","Version":"6.4.1.18(sonoff)","FallbackTopic":"cmnd/DVES_0F86C9C9_fb/","GroupTopic":"sonoffs"}
17:33:19 MQT: tele/sonoff/INFO2 = {"WebServerMode":"Admin","Hostname":"sonoff-1737","IPAddress":"192.168.12.111"}
17:33:19 MQT: tele/sonoff/INFO3 = {"RestartReason":"Software/System restart"}
17:33:19 MQT: stat/sonoff/RESULT = {"POWER":"OFF"}
17:33:19 MQT: stat/sonoff/POWER = OFF
17:33:27 MQT: tele/sonoff/STATE = {"Time":"2019-02-27T17:33:27","Uptime":"0T00:00:14","Vcc":3.447,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"POWER":"OFF","Wifi":{"AP":1,"SSId":"iot-2","BSSId":"38:17:C3:F1:90:01","Channel":1,"RSSI":56,"LinkCount":1,"Downtime":"0T00:00:04"}}
17:34:37 CMD: status 0
17:34:37 MQT: stat/sonoff/STATUS = {"Status":{"Module":4,"FriendlyName":["Sonoff"],"Topic":"sonoff","ButtonTopic":"0","Power":0,"PowerOnState":3,"LedState":1,"SaveData":1,"SaveState":1,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0}}
17:34:37 MQT: stat/sonoff/STATUS1 = {"StatusPRM":{"Baudrate":115200,"GroupTopic":"sonoffs","OtaUrl":"http://thehackbox.org/tasmota/release/sonoff.bin","RestartReason":"Software/System restart","Uptime":"0T00:01:24","StartupUTC":"2019-02-27T10:33:13","Sleep":50,"CfgHolder":4617,"BootCount":3,"SaveCount":7,"SaveAddress":"F5000"}}
17:34:38 MQT: stat/sonoff/STATUS2 = {"StatusFWR":{"Version":"6.4.1.18(sonoff)","BuildDateTime":"2019-02-25T17:39:28","Boot":31,"Core":"2_5_0","SDK":"3.0.0-dev(c0f7b44)"}}
17:34:38 MQT: stat/sonoff/STATUS3 = {"StatusLOG":{"SerialLog":2,"WebLog":2,"SysLog":0,"LogHost":"192.168.12.155","LogPort":514,"SSId":["iot-2","Wong"],"TelePeriod":300,"Resolution":"558180C0","SetOption":["00008009","280500000100000000000000000000000000","00000000"]}}
17:34:38 MQT: stat/sonoff/STATUS4 = {"StatusMEM":{"ProgramSize":496,"Free":504,"Heap":26,"ProgramFlashSize":1024,"FlashSize":1024,"FlashChipId":"14405E","FlashMode":3,"Features":["00000809","0F082790","04000000","000000CE","000013C0"]}}
17:34:38 MQT: stat/sonoff/STATUS5 = {"StatusNET":{"Hostname":"sonoff-1737","IPAddress":"192.168.12.111","Gateway":"192.168.12.1","Subnetmask":"255.255.255.0","DNSServer":"210.245.31.220","Mac":"2C:3A:E8:0F:86:C9","Webserver":2,"WifiConfig":4}}
17:34:38 MQT: stat/sonoff/STATUS6 = {"StatusMQT":{"MqttHost":"192.168.12.155","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_0F86C9C9","MqttUser":"admin","MqttType":1,"MqttCount":1,"MAX_PACKET_SIZE":1000,"KEEPALIVE":15}}
17:34:38 MQT: stat/sonoff/STATUS7 = {"StatusTIM":{"UTC":"Wed Feb 27 10:34:38 2019","Local":"Wed Feb 27 17:34:38 2019","StartDST":"Sun Mar 31 02:00:00 2019","EndDST":"Sun Oct 27 03:00:00 2019","Timezone":"+07:00","Sunrise":"06:08","Sunset":"18:02"}}
17:34:38 MQT: stat/sonoff/STATUS10 = {"StatusSNS":{"Time":"2019-02-27T17:34:38"}}
17:34:38 MQT: stat/sonoff/STATUS11 = {"StatusSTS":{"Time":"2019-02-27T17:34:38","Uptime":"0T00:01:25","Vcc":3.448,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"POWER":"OFF","Wifi":{"AP":1,"SSId":"iot-2","BSSId":"38:17:C3:F1:90:01","Channel":1,"RSSI":58,"LinkCount":1,"Downtime":"0T00:00:04"}}}

To Reproduce
Fallback_topic should not be changed even update to latest FW or Core version.

Screenshots
This screen shot of Core_2.5.0

this is a screenshot of Core_2.4.2

[ascillato2]

Hi, as you are selfcompiling and as the tool chain of the core 2.5.0 have changed. Could you please try the precompiled bins? Thanks

[ascillato]

I'm not totally sure, but I think this issue of the core was already addressed in the Arduino repository, so updating your core 2.5.0 to stage should solve this issue.

It is not a Tasmota bug.

[wongnam]

Yes, the issue is gone after update the to latest Espressif 8266 2.0.1 (Core_2.5.0). Thanks.

The strange is VSC+PlatformIO did not announce that the core had a new update, so I had to manually update it.

closed because it was resolved.

[meingraham]

I upgraded one of my devices from precompiled

6.3.0.16(a516b25-sonoff)
2018-12-09T18:24:40
2_4_2/2.2.1(cfd48f3)

To precompiled

6.4.1.19(9e8ed1a-sensors)
2019-03-01T17:05:04
2_5_0/3.0.0-dev(c0f7b44)

MQTT Client | DVES_231F9292
MQTT Fallback Topic | cmnd/DVES_231F9292_fb/

These fields are now 8 characters rather than 6. I just wanted to confirm that this is the way 2.5.0 will configure this ID. Is it the last MAC octet which is duplicated or are the last two digits derived from something else?

STATUS = {"Status":{"Module":18,"FriendlyName":["<myName>"],"Topic":"<myTopic>","ButtonTopic":"0","Power":0,"PowerOnState":3,"LedState":1,"SaveData":1,"SaveState":0,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0}}
STATUS1 = {"StatusPRM":{"Baudrate":9600,"GroupTopic":"sonoffs","OtaUrl":"http://thehackbox.org/tasmota/020500/sonoff-sensors.bin","RestartReason":"Software/System restart","Uptime":"0T00:24:35","StartupUTC":"2019-03-01T16:53:23","Sleep":50,"CfgHolder":4617,"BootCount":90,"SaveCount":449,"SaveAddress":"FB000"}}
STATUS2 = {"StatusFWR":{"Version":"6.4.1.19(9e8ed1a-sensors)","BuildDateTime":"2019-03-01T17:05:04","Boot":6,"Core":"2_5_0","SDK":"3.0.0-dev(c0f7b44)"}}
STATUS3 = {"StatusLOG":{"SerialLog":0,"WebLog":2,"SysLog":2,"LogHost":"<logHost>","LogPort":514,"SSId":["<mySSID>",""],"TelePeriod":300,"Resolution":"559580C0","SetOption":["00208108","280500000000000000000000000000000000","000000C0"]}}
STATUS4 = {"StatusMEM":{"ProgramSize":598,"Free":404,"Heap":16,"ProgramFlashSize":1024,"FlashSize":1024,"FlashChipId":"146085","FlashMode":3,"Features":["00000809","0FDEE794","0007A3A4","B7FFBFCC","001ABBC0"]}}
STATUS5 = {"StatusNET":{"Hostname":"<hostName>-8082","IPAddress":"192.168.1.xxx","Gateway":"192.168.1.1","Subnetmask":"255.255.255.0","DNSServer":"192.168.1.1","Mac":"<myMAC>:23:1F:92","Webserver":2,"WifiConfig":4}}
STATUS6 = {"StatusMQT":{"MqttHost":"<mqttHost>","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_231F9292","MqttUser":"<mqttUser>","MqttType":1,"MqttCount":1,"MAX_PACKET_SIZE":1000,"KEEPALIVE":15}}
STATUS7 = {"StatusTIM":{"UTC":"Fri Mar 01 17:17:58 2019","Local":"Fri Mar 01 12:17:58 2019","StartDST":"Sun Mar 10 02:00:00 2019","EndDST":"Sun Nov 03 02:00:00 2019","Timezone":99,"Sunrise":"06:56","Sunset":"18:22"}}
STATUS9 = {"StatusPTH":{"PowerDelta":0,"PowerLow":0,"PowerHigh":0,"VoltageLow":0,"VoltageHigh":0,"CurrentLow":0,"CurrentHigh":0}}
STATUS10 = {"StatusSNS":{"Time":"2019-03-01T12:17:58","ANALOG":{"A0":67},"ENERGY":{"TotalStartTime":"2018-12-10T17:32:10","Total":66.505,"Yesterday":0.856,"Today":0.000,"Power":0.00,"ApparentPower":0.00,"ReactivePower":0.00,"Factor":0.00,"Voltage":119.00,"Current":0.000}}}
STATUS11 = {"StatusSTS":{"Time":"2019-03-01T12:17:58","Uptime":"0T00:24:35","SleepMode":"Dynamic","Sleep":50,"LoadAvg":33,"Wifi":{"AP":1,"SSId":"<mySSID","BSSId":"<apMAC>","Channel":1,"RSSI":68,"LinkCount":1,"Downtime":"0T00:00:09"}}}

Mike

[wongnam]

Update: i see your device issue now. DVES_231F9292. yes, please update lastest core_2.5.0 in PlatformIO.

it had changed since #4706.

6.4.0.3 20181222

• Change Hass discovery to short MQTT messages as used by Hass 0.81 and up (Remove SetOption55 (hass_short_discovery_msg) #4711)
• Change FallbackTopic detection (Fallback topic detection generates false positives #4706)
• Add define WIFI_SOFT_AP_CHANNEL in my_user_config.h to set Soft Access Point Channel number between 1 and 13 as used by Wifi Manager web GUI (Problem with WiFi channel on first configuration on D1 mini and other #4673)
• Fix Alexa "this value is outside the range of the device". Needs power cycle and Alexa deletion/discovery cycle. (Hue emulation Alexa works but says "this value is outside the range of the device" #3159, Remove Alexa message "this value is outside the range of the device" #4712)

[meingraham]

It's not an IDE issue. I am using pre-compiled binaries. My question is less about the change in the fallback topic naming convention. It's more about the device ID changing from 6 characters to 8 characters and where the last two characters are derived from.