[NRF MESH SDK5] Unable to send more than 50 bytes payload

[neicureuil]

Hi,

I have modify the payload of the Light Switch example of the NRF MESH SDK. When I send 50 bytes or less, all works fines : the server nodes received all the bytes but when I send more than 50 bytes, nothing append, the message isn't received by the node (I got an ack timeout on the client node).

I have changed the timeout to 60s for the Ack and I am sure that the message memory field is available during all the sending process.

Log for 49 bytes or less :

<t:     199893>, main.c,  236, Button 1 pressed
<t:     199896>, main.c,  260, Sending msg: ONOFF SET 1
<t:     199932>, access.c,  425, TX: [aop: 0x8202] 
<t:     199935>, access.c,  426, TX: Msg: 820242000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     199984>, access.c,  253, RX: [aop: 0x8202]
<t:     199988>, access.c,  276, RX: Msg: 42000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     211612>, access.c,  253, RX: [aop: 0x8204]
<t:     211614>, access.c,  276, RX: Msg: 01
<t:     211618>, main.c,  170, Acknowledged transfer success.
<t:     211620>, main.c,  200, OnOff server: 0x0014, Present OnOff: 1
<t:     628641>, main.c,  236, Button 1 pressed
<t:     628643>, main.c,  260, Sending msg: ONOFF SET 1
<t:     628679>, access.c,  425, TX: [aop: 0x8202] 
<t:     628682>, access.c,  426, TX: Msg: 820242000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     628731>, access.c,  253, RX: [aop: 0x8202]
<t:     628734>, access.c,  276, RX: Msg: 42000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     641033>, access.c,  253, RX: [aop: 0x8204]
<t:     641036>, access.c,  276, RX: Msg: 01
<t:     641039>, main.c,  170, Acknowledged transfer success.
<t:     641042>, main.c,  200, OnOff server: 0x0014, Present OnOff: 1

Logs for 51 bytes or more :

<t:     131570>, main.c,  236, Button 1 pressed
<t:     131572>, main.c,  260, Sending msg: ONOFF SET 1
<t:     131613>, access.c,  425, TX: [aop: 0x8202] 
<t:     131617>, access.c,  426, TX: Msg: 8202420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     131673>, access.c,  253, RX: [aop: 0x8202]
<t:     131676>, access.c,  276, RX: Msg: 420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     167668>, access_reliable.c,  131, [er8] <= access_model_publish()
<t:     203712>, access_reliable.c,  131, [er8] <= access_model_publish()
<t:     275840>, access.c,  425, TX: [aop: 0x8202] 
<t:     275843>, access.c,  426, TX: Msg: 8202420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     275899>, access.c,  253, RX: [aop: 0x8202]
<t:     275903>, access.c,  276, RX: Msg: 420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     420018>, access.c,  425, TX: [aop: 0x8202] 
<t:     420022>, access.c,  426, TX: Msg: 8202420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     420077>, access.c,  253, RX: [aop: 0x8202]
<t:     420080>, access.c,  276, RX: Msg: 420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     708377>, access.c,  425, TX: [aop: 0x8202] 
<t:     708381>, access.c,  426, TX: Msg: 8202420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:     708436>, access.c,  253, RX: [aop: 0x8202]
<t:     708439>, access.c,  276, RX: Msg: 420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:    1285093>, access.c,  425, TX: [aop: 0x8202] 
<t:    1285097>, access.c,  426, TX: Msg: 8202420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:    1285151>, access.c,  253, RX: [aop: 0x8202]
<t:    1285155>, access.c,  276, RX: Msg: 420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF
<t:    2097703>, main.c,  175, Acknowledged transfer timeout.

Can you help me please ?

Regards

[Kenneth]

Hi,

We will look into these questions in the next few days.

Kenneth

[neicureuil]

I made an other experience :

- I send a message of 10 bytes and I force the ACK size upper 50 (I test with 60 and 150), and the ack is received correctly but when I try to increase the message size upper 50, I got the same issue as before.

- I try to enable intraburst but I got the same issue.

- I try to downgrade the mesh sdk from 5.0.0 to 4.2.0 and I got the same behavior.