Solved - it was problem with armbian. i changed it to hardkernel´s ubuntu and now it working.
Thanks.

i tried it on my odroid N2 with Ubuntu 21.04, kernel 5.14.0 but i can't get it work. I got this error:

Could not open /sys/class/gpio/gpio9/direction

i used your github repo. I don't know what is wrong or did i forget something?

Hello,
i plan to replace RPI 3B and use odroid n2 also via 40 pin SPI bus. Is your library working? Thanks for your work.

Hello,
I have a similar problem. I wanted to start a new thread, but after reading this posts I put it here. My problem is similar even though I do not have a repeater. I used the mysensors version 2.3.0 alpha, after updating to 2.3.0 stable a few days ago one of my nodes started not to send humidity data. Here is the log:

16 MCO:BGN:INIT NODE,CP=RNNNA---,VER=2.3.0
25 TSM:INIT
26 TSF:WUR:MS=0
33 TSM:INIT:TSP OK
35 TSM:INIT:STATID=101
37 TSF:SID:OK,ID=101
39 TSM:FPAR
40 TSM:FPAR:STATP=0
43 TSM:ID
44 TSM:ID:OK
45 TSM:UPL
81 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
2092 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=1,st=OK:1
2099 TSF:MSG:READ,0-0-101,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2104 TSF:MSG:PONG RECV,HP=1
2107 TSM:UPL:OK
2108 TSM:READY:ID=101,PAR=0,DIS=1
2132 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
2143 TSF:MSG:READ,0-0-101,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
2183 TSF:MSG:SEND,101-101-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=0,st=OK:2.3.0
2191 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
2732 TSF:MSG:READ,0-0-101,s=255,c=3,t=6,pt=0,l=1,sg=0:M
2769 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=11,pt=0,l=18,sg=0,ft=0,st=OK:Senzor 101-DualDHT
2780 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.1
2790 TSF:MSG:SEND,101-101-0-0,s=0,c=0,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2798 TSF:MSG:SEND,101-101-0-0,s=1,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
2805 TSF:MSG:SEND,101-101-0-0,s=2,c=0,t=6,pt=0,l=0,sg=0,ft=0,st=OK:
2813 TSF:MSG:SEND,101-101-0-0,s=3,c=0,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
2820 MCO:REG:REQ
2824 TSF:MSG:SEND,101-101-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
2832 TSF:MSG:READ,0-0-101,s=255,c=3,t=27,pt=1,l=1,sg=0:1
2837 MCO:PIM:NODE REG=1
2840 MCO:BGN:INIT OK,TSP=1
2848 MCO:SLP:MS=2000,SMS=0,I1=255,M1=255,I2=255,M2=255
2853 TSF:TDI:TSL
2855 MCO:SLP:WUP=-1
2856 TSF:TRI:TSB
2868 TSF:MSG:SEND,101-101-0-0,s=1,c=1,t=0,pt=7,l=5,sg=0,ft=0,st=OK:31.8
DHT1TEMP: 31.80
2875 MCO:SLP:MS=2500,SMS=0,I1=255,M1=255,I2=255,M2=255
2880 TSF:TDI:TSL
2882 MCO:SLP:WUP=-1
2884 TSF:TRI:TSB
4485 !TSF:MSG:SEND,101-101-0-0,s=0,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=NACK:35.2
DHT1HUM: 35.20
4497 MCO:SLP:MS=2000,SMS=0,I1=255,M1=255,I2=255,M2=255
4501 TSF:TDI:TSL
4503 MCO:SLP:WUP=-1
4505 TSF:TRI:TSB
4513 TSF:MSG:SEND,101-101-0-0,s=2,c=1,t=0,pt=7,l=5,sg=0,ft=1,st=OK:24.0
DHT2TEMP: 24.00
4520 MCO:SLP:MS=2500,SMS=0,I1=255,M1=255,I2=255,M2=255
4527 TSF:TDI:TSL
4529 MCO:SLP:WUP=-1
4530 TSF:TRI:TSB
6130 !TSF:MSG:SEND,101-101-0-0,s=3,c=1,t=1,pt=7,l=5,sg=0,ft=0,st=NACK:56.8
DHT2HUM: 56.80

As you can see the temperature is sent correctly, and then the humidity value is not. When I returned the 2.3.0 alpha version to the node, everything started going OK. Otherwise, on other nodes where i also updated to version 2.3.0 stable this problem is not. I also updated the gateway to version 2.3.0 stable. I just had to make a downgrade on this one node only.