Excessive NACK



  • If I set the ACK flag in my send() , I get a lot of NACK from the MQTT gateway..

    MySensor 2.1b
    M0 CPU
    IDE 1.6.13

    1. Will MySensor do the auto re-transmit? if not, why not?, it should up to N times.
    2. If I run without the ACK flag set, I get very few if any NACK
    3. If I add a 500ms delay after each send, the number of NACK is less, (but this is a waist of power)
    4. all board have 47uf at the radio
    TSM:INIT
    TSF:WUR:MS=0
    TSM:INIT:TSP OK
    TSM:INIT:STATID=20
    TSF:SID:OK,ID=20
    TSM:FPAR
    TSF:MSG:SEND,20-20-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
    TSF:MSG:READ,0-0-20,s=255,c=3,t=8,pt=1,l=1,sg=0:0
    TSF:MSG:FPAR PREF
    TSF:MSG:FPAR OK,ID=0,D=1
    TSM:FPAR:OK
    TSM:ID
    TSM:ID:OK
    TSM:UPL
    TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
    TSF:MSG:READ,0-0-20,s=255,c=3,t=25,pt=1,l=1,sg=0:1
    TSF:MSG:PONG RECV,HP=1
    TSM:UPL:OK
    TSM:READY:ID=20,PAR=0,DIS=1
    TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
    TSF:MSG:READ,0-0-20,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
    TSF:MSG:SEND,20-20-0-0,s=255,c=0,t=17,pt=0,l=10,sg=0,ft=0,st=OK:2.1.0-beta
    TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
    TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=11,pt=0,l=20,sg=0,ft=0,st=OK:Soil Moisture Sensor
    !TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=12,pt=0,l=4,sg=0,ft=0,st=NACK:1.1a
    TSF:MSG:SEND,20-20-0-0,s=1,c=0,t=21,pt=0,l=14,sg=0,ft=1,st=OK:Water Moisture
    MCO:REG:REQ
    !TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=NACK:2
    TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=1,st=OK:2
    TSF:MSG:READ,0-0-20,s=255,c=3,t=27,pt=1,l=1,sg=0:1
    MCO:PIM:NODE REG=1
    MCO:BGN:STP
    TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=47,pt=0,l=8,sg=0,ft=0,st=OK:Starting
    ***In Setup
     ** Hello from the Water Sensor on a M0 **
     Soil Moisture Sensor 1.1a
     /Users/lafleur/Desktop/MySensor-Arduino-development/Arduino_fork/Soil_Moisture_Sensor_R1.1-RFM95/Soil_Moisture_Sensor_ Dec 28 2016, 10:12:32 
    
     My Node ID: 20
    
    Setting Time on DS3231 
    MCO:BGN:INIT OK,TSP=1
    TSF:MSG:READ,0-0-20,s=1,c=1,t=47,pt=0,l=8,sg=0:Starting
    TSF:MSG:ACK
    Moisture 1: 13 Res: 10100
    TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=27,pt=4,l=4,sg=0,ft=0,st=OK:13
    !TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:10100
    Moisture 2: 3 Res: 100000
    TSF:MSG:SEND,20-20-0-0,s=2,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:3
    !TSF:MSG:SEND,20-20-0-0,s=2,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:100000
    Moisture 3: 3 Res: 100000
    TSF:MSG:SEND,20-20-0-0,s=3,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:3
    !TSF:MSG:SEND,20-20-0-0,s=3,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:100000
    Moisture 4: 3 Res: 100000
    TSF:MSG:SEND,20-20-0-0,s=4,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:3
    !TSF:MSG:SEND,20-20-0-0,s=4,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:100000
    TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=38,pt=7,l=5,sg=0,ft=1,st=OK:4.25
    !TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=NACK:65
    Vbat: 4.25V 
    Moisture 1: 13 Res: 10102
    TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:13
    !TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:10102
    Moisture 2: 3 Res: 100000
    TSF:MSG:SEND,20-20-0-0,s=2,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:3
    !TSF:MSG:SEND,20-20-0-0,s=2,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:100000
    Moisture 3: 3 Res: 100000
    TSF:MSG:SEND,20-20-0-0,s=3,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:3
    !TSF:MSG:SEND,20-20-0-0,s=3,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:100000
    Moisture 4: 3 Res: 100000
    TSF:MSG:SEND,20-20-0-0,s=4,c=1,t=27,pt=4,l=4,sg=0,ft=1,st=OK:3
    !TSF:MSG:SEND,20-20-0-0,s=4,c=1,t=14,pt=5,l=4,sg=0,ft=0,st=NACK:100000
    TSF:MSG:SEND,20-20-0-0,s=1,c=1,t=38,pt=7,l=5,sg=0,ft=1,st=OK:4.26
    !TSF:MSG:SEND,20-20-0-0,s=255,c=3,t=0,pt=1,l=1,sg=0,ft=0,st=NACK:65
    Vbat: 4.25V 
    

  • Hardware Contributor

    there are few things missing..

    • what's your hardware for GW (mcu). i assume your node is atsam
    • which radio? rfm95?

    if this is rfm95, i think it's because the lib is still new and dev for the moment, but lot of work is done. Also note rssi is already implemented. not completely but it's there ;)



  • This post is deleted!


  • Gateway is ESP8266 and radio is RFM95



  • How did you solve this finally?

    I'm also experiencing a huge amount of NACK's. Adding large delays solves the NACK's but isn't an option as I want to use batteries.



  • @mpp 90-95% percent of my NACKs were solved by:

    1. changing radio
    2. installing or changing capacitor
    3. changing the radio power supply

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