DHT22 report null after a while

[Magnus-rosenborg]

BUG DESCRIPTION

Get null for both humidity and temperature on AM2302, DS18B20 works fine.
Running on Wemos D1 R2, Tasmota 6.5.0(sensors)

REQUESTED INFORMATION

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FAILURE TO COMPLETE THE REQUESTED INFORMATION WILL RESULT IN YOUR ISSUE BEING CLOSED

• Read the Contributing Guide and Policy and the Code of Conduct
• Searched the problem in issues (https://github.com/arendst/Sonoff-Tasmota/issues)
• Searched the problem in the wiki (https://github.com/arendst/Sonoff-Tasmota/wiki/Troubleshooting)
• Searched the problem in the forum (https://groups.google.com/d/forum/sonoffusers)
• Searched the problem in the chat (https://discord.gg/Ks2Kzd4)
• Device used (i.e. Sonoff Basic) : _Sensor works on sonoff Basic but not on Wemos ____
• Tasmota binary firmware version number used : 6.5.0, self compiled____ / (pre-compiled or self-compiled ?)
• Development IDE - Compiler / Upload tools used :platformio ____ / http____
• Provide the output of command status 0 :

STATUS 0 OUTPUT HERE:
00:53:59 MQT: stat/80/STATUS = {"Status":{"Module":18,"FriendlyName":["Wemos","Wemos2","Wemos3","Wemos4"],"Topic":"80","ButtonTopic":"KNAPP80","Power":0,"PowerOnState":3,"LedState":1,"SaveData":1,"SaveState":1,"SwitchTopic":"SWITCH80","SwitchMode":[2,0,0,0,0,0,0,0],"ButtonRetain":1,"SwitchRetain":1,"SensorRetain":0,"PowerRetain":1}}
00:53:59 MQT: stat/80/STATUS1 = {"StatusPRM":{"Baudrate":115200,"GroupTopic":"sonoffs","OtaUrl":"http://insidan.us.to/sonoff/firmware80.bin","RestartReason":"Software/System restart","Uptime":"0T00:09:47","StartupUTC":"2019-04-10T22:44:12","Sleep":50,"CfgHolder":4617,"BootCount":64,"SaveCount":296,"SaveAddress":"F9000"}}
00:53:59 MQT: stat/80/STATUS2 = {"StatusFWR":{"Version":"6.5.0(sensors)","BuildDateTime":"2019-04-11T00:17:47","Boot":31,"Core":"2_3_0","SDK":"1.5.3(aec24ac9)"}}
00:53:59 MQT: stat/80/STATUS3 = {"StatusLOG":{"SerialLog":0,"WebLog":2,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["lj3m",""],"TelePeriod":60,"Resolution":"558180C0","SetOption":["000080E9","280500000100000000000000000000000000","00000000"]}}
00:53:59 MQT: stat/80/STATUS4 = {"StatusMEM":{"ProgramSize":547,"Free":456,"Heap":15,"ProgramFlashSize":1024,"FlashSize":4096,"FlashChipId":"164020","FlashMode":3,"Features":["0000041D","0FDEE3B4","0001A004","B7FFBFCC","005ABBC0"]}}
00:53:59 MQT: stat/80/STATUS5 = {"StatusNET":{"Hostname":"80-5893","IPAddress":"192.168.200.220","Gateway":"192.168.200.254","Subnetmask":"255.255.255.0","DNSServer":"192.168.200.1","Mac":"60:01:94:56:D7:05","Webserver":2,"WifiConfig":4}}
00:53:59 MQT: stat/80/STATUS6 = {"StatusMQT":{"MqttHost":"192.168.200.1","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_56D705","MqttUser":"scriptuser","MqttCount":1,"MAX_PACKET_SIZE":1000,"KEEPALIVE":15}}
00:53:59 MQT: stat/80/STATUS7 = {"StatusTIM":{"UTC":"Wed Apr 10 22:53:59 2019","Local":"Thu Apr 11 00:53:59 2019","StartDST":"Sun Mar 31 02:00:00 2019","EndDST":"Sun Oct 27 03:00:00 2019","Timezone":"+02:00","Sunrise":"07:07","Sunset":"20:35"}}
00:53:59 MQT: stat/80/STATUS10 = {"StatusSNS":{"Time":"2019-04-11T00:53:59","ANALOG":{"A0":8},"DS18B20":{"Temperature":1.0},"AM2301":{**"Temperature":null,"Humidity":null},"TempUnit":"C"}}**
00:53:59 MQT: stat/80/STATUS11 = {"StatusSTS":{"Time":"2019-04-11T00:53:59","Uptime":"0T00:09:47","SleepMode":"Dynamic","Sleep":50,"LoadAvg":48,"POWER1":"0","POWER2":"0","POWER3":"0","POWER4":"0","Wifi":{"AP":1,"SSId":"lj3m","BSSId":"E4:F0:42:E6:0A:85","Channel":6,"RSSI":100,"LinkCount":1,"Downtime":"0T00:00:06"}}}

• Provide the output of console when you experience your issue if apply :
  (Please use weblog 4 for more debug information)

CONSOLE OUTPUT HERE:
under väntan startsignal hög puls = means timeout during wait for start signal high puls
00:57:24 DHT: Timeout under väntan startsignal hög puls
00:57:26 DHT: Timeout under väntan startsignal hög puls
00:57:28 DHT: Timeout under väntan startsignal hög puls
00:57:30 MQT: tele/80/STATE = {"Time":"2019-04-11T00:57:30","Uptime":"0T00:13:18","SleepMode":"Dynamic","Sleep":50,"LoadAvg":30,"POWER1":"0","POWER2":"0","POWER3":"0","POWER4":"0","Wifi":{"AP":1,"SSId":"lj3m","BSSId":"E4:F0:42:E6:0A:85","Channel":6,"RSSI":100,"LinkCount":1,"Downtime":"0T00:00:06"}} (bevarad)
00:57:30 MQT: tele/80/SENSOR = {"Time":"2019-04-11T00:57:30","ANALOG":{"A0":8},"DS18B20":{"Temperature":1.0},"AM2301":{"Temperature":null,"Humidity":null},"TempUnit":"C"}
00:57:30 DHT: Timeout under väntan startsignal hög puls
00:57:32 DHT: Timeout under väntan startsignal hög puls
00:57:35 DHT: Timeout under väntan startsignal hög puls
00:57:36 DHT: Timeout under väntan startsignal hög puls
00:57:38 DHT: Timeout under väntan startsignal hög puls
00:57:40 DHT: Timeout under väntan startsignal hög puls
00:57:41 WIF: Kontrollerar anslutning...
00:57:41 WIF: Ansluten
00:57:42 DHT: Timeout under väntan startsignal hög puls

TO REPRODUCE

Nothing it happens all time, works after reboot for a minute then it starts to get null more and more null. After som hour or so only null values.

EXPECTED BEHAVIOR

Get both values.

SCREENSHOTS

If applicable, add screenshots to help explain your problem.

ADDITIONAL CONTEXT

Not sure if needed but AM2302 is connected to GPIO14 and my DS18B20 is connected to GPIO2.

(Please, remember to close the issue when the problem has been addressed)

[wongnam]

you should separate the issue by try to connect only the AM2302 first and see if it will work or not.
I am using AM2302 without any issue.

[ascillato2]

Hi, sorry. I can't reproduce your issue. Please, could you recheck your wirings?

[Magnus-rosenborg]

Ok, god plint. I Will do that right now. Will return later how It workt out Med vänlig hälsning, Magnus

…

11 apr. 2019 kl. 06:17 skrev Wongnam ***@***.***>: you should separate the issue by try to connect only the AM2302 first and see if it will work or not. I am using AM2302 without any issue. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[Magnus-rosenborg]

Now i’ve the DS18B20 disconnected but still get the null values. Could it be something in my compilation?

…

11 apr. 2019 kl. 10:22 skrev Adrian Scillato ***@***.***>: Hi, sorry. I can't reproduce your issue. Please, could you recheck your wirings? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5619 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AvNQqe9KF648tJW6I44EHnT0vRJFfVYgks5vfvC7gaJpZM4coa1b>.

[ascillato]

You can try with another AM2302 and you can also try the precompiled bins.

[dcbo]

Same for me, I have four Nodemcu running Tasmota 6.5.0
(precompiled Version sonoff-DE.bin)

Three Modules are configured only with one DHT11-Sensor on D5 GPIO14 and
all three works fine.

The forth is equipped with:

• Switch1 (9) on D2 GPIO3
• Relay2 (22) on D1 GPIO5
• Relay1 (21) on D6 GPIO12
• AM2301 (2) on D5 GPIO14
  and it worked for some time.

I think after the first Reboot (Software reset, without Power-Cycle)
it shows "AM2301 Temperatur null°C, AM2301 Feuchtigkeit null%".
Any additional Software reset without Power-Cycle doesn't change the behavior.

After Power-Cycle the AM2301 works again.

[Magnus-rosenborg]

Hi, Could it be that the esp8266 has to much to do so it’s at timing issue on the 1-wire bus? If so why on the AM2302 and not on the DS18B20? I have tried 2 different AM2302 same problem. Next step is try the precompiled sensor version.

…

12 apr. 2019 kl. 10:39 skrev Dario ***@***.***>: Same for me, I have four Nodemcu running Tasmota 6.5.0 (precompiled Version sonoff-DE.bin) Three Modules are configured only with one DHT11-Sensor on D5 GPIO14 and all three works fine. The forth is equipped with: Switch1 (9) on D2 GPIO3 Relay2 (22) on D1 GPIO5 Relay1 (21) on D6 GPIO12 AM2301 (2) on D5 GPIO14 and it worked for some time. I think after the first Reboot (Software reset, without Power-Cycle) it shows "AM2301 Temperatur null°C, AM2301 Feuchtigkeit null%". Any additional Software reset without Power-Cycle doesn't change the behavior. After Power-Cycle the AM2301 works again. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5619 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AvNQqWzAH18hjsBNVvqI-mJH7XL3o3E6ks5vgEY_gaJpZM4coa1b>.

[Jason2866]

I dont think so. "LoadAvg":48 is a value which indicates no problems with CPU load

[Dreamoffice]

Hi
i have the same problem with the DHT22

[Magnus-rosenborg]

Now running on precompiled version 6.5 still have the null problem. Any idea??

…

13 apr. 2019 kl. 10:11 skrev Dave ***@***.***>: Hi i have the same problem with the DHT22 <https://user-images.githubusercontent.com/35889916/56076721-835ef880-5dd4-11e9-9ad6-d83326d5f677.png> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5619 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AvNQqbJNjaP6nI_N4LMcdznxqdl0XaaEks5vgZFEgaJpZM4coa1b>.

[ascillato]

Which version type did you upload?

The basic does not have all sensors support. You have to use the latest full version http://thehackbox.org/tasmota/sonoff-sensors.bin

[wongnam]

@Magnus-rosenborg Try to add a pull up resistor to the sensor.

[Jason2866]

Seems the self compiled is buggy...