For most users, it is server v2. That is protocol v2 and what the normal apps and servers use.
The v3 protocol is MQTT for IoT style servers. That is still experimental.
Mark, I'm trying to get my v3 module up and running but it's completely unstable and I'm hoping you can help. I started posting in this thread:
Wifi Client Connection Issues | Open Vehicles
I had hoped that adding my modem module would stabilize things, but it has not. My module seems to be locking up constantly. Here are some logs from the latest lockup:
<start car to go for a drive>
2019-09-03 21:46:35 PDT D (5440209) events: Signal(vehicle.on)
2019-09-03 21:46:37 PDT D (5442449) events: Signal(vehicle.headlights.on)
2019-09-03 21:46:47 PDT D (5451949) simcom: rx line ch=3 len=10 : +CSQ: 0,99
2019-09-03 21:46:47 PDT D (5451979) simcom: rx line ch=4 len=10 : +CSSQ: 0,99
2019-09-03 21:46:56 PDT D (5460609) simcom: rx line ch=3 len=10 : +CREG: 1,1
2019-09-03 21:46:56 PDT D (5460639) simcom: rx line ch=3 len=29 : +CCCLK: "19/09/03,21:46:55-28"
2019-09-03 21:46:56 PDT D (5460669) simcom: rx line ch=3 len=10 : +CSQ: 0,99
2019-09-03 21:46:56 PDT D (5460689) simcom: rx line ch=3 len=23 : +COPS: 0,0,"T-Mobile",2
2019-09-03 21:46:56 PDT ID 5460709) simcom: rx line ch=3 len=2 : OK
2019-09-03 21:47:02 PDT D (5466999) simcom: rx line ch=3 len=10 : +CSSQ: 3,99
2019-09-03 21:47:02 PDT D (5467029) simcom: rx line ch=4 len=10 : +CSQ: 3,99
2019-09-03 21:47:03 PDT D (5468149) events: Signal(vehicle.charge.mode)
2019-09-03 21:47:05 PDT D (5470159) events: Signal(vehicle.charge.mode)
2019-09-03 21:47:26 PDT D (5490559) simcom: rx line ch=3 len=10 : +CREG: 1,1
2019-09-03 21:47:26 PDT D (5490579) simcom: rx line ch=3 len=29 : +CRCLK: "19/09/03,21:7:255-28"
2019-09-03 21:47:26 PDT D (5490599) simcom: rx line ch=3 len=10 : +CSQ: 3,99
2019-09-03 21:47:26 PDT D (5490619) simcom: rx line ch=3 len=23 : +CROPS: 0,0,"T-Mobile",2
2019-09-03 21:47:26 PDT D (5490659) simcom: rx line ch=3 len=2 : OK
2019-09-03 21:47:46 PDT I (5510539) ovms-server-v2: Send MP-0 S61.0,M,65535,0,stopped,standard,100,81,12,0,0,2$
2019-09-03 21:47:46 PDT I (5510569) ovms-server-v2: Send MP-0 D128,32,5,39,40,37,499,597532,0,0,32,2,1,1,12.64$
2019-09-03 21:47:46 PDT I (5510589) ovms-server-v2: Send MP-0 L33.649364,-117.612961,218,316,1,1,0,0,0.8,0,0
2019-09-03 21:47:46 PDT I (5510619) ovms-server-v2: Send MP-0 F3.2.002/ota_0/main (build idf v3.1-dev-2835-g15$
2019-09-03 21:47:56 PDT D (5520599) simcom: rx line ch=3 len=10 : +CREG: 1,1
2019-09-03 21:47:56 PDT D (5520629) simcom: rx line ch=3 len=29 : +CCCLK: "19/09/03,21:7:565-28"
2019-09-03 21:47:56 PDT D (5520649) simcom: rx line ch=3 len=10 : +CSQ: 3,99
2019-09-03 21:47:56 PDT D (5520669) simcom: rx line ch=3 len=23 : +COPS: 0,0,"T-Mobile",2
2019-09-03 21:47:56 PDT ID 5520699) simcom: rx line ch=3 len=2 : OK
2019-09-03 21:47:59 PDT D (5524149) simcom: rx line ch=3 len=10 : +CSSQ:63,99
2019-09-03 21:47:59 PDT D (5524179) simcom: rx line ch=4 len=10 : +CSQ: 6,99
2019-09-03 21:48:08 PDT D (5533179) simcom: rx line ch=3 len=10 : +CSQ: 3,99
2019-09-03 21:48:08 PDT D (5533209) simcom: rx line ch=4 len=10 : +CSQ: 3,99
2019-09-03 21:48:08 PDT D (5533179) simcom: rx line ch=3 len=10 : +CSQ: 3,99
2019-09-03 21:48:08 PDT D (5533209) simcom: rx line ch=4 len=10 : +CSQ: 3,99
2019-09-03 21:48:26 PDT D (5550599) simcom: rx line ch=3 len=10 : +CREG: 1,1
2019-09-03 21:48:26 PDT D (5550629) simcom: rx line ch=3 len=29 : +CRCLK: "19/09/03,21:8:265-28"
2019-09-03 21:48:26 PDT D (5550659) simcom: rx line ch=3 len=10 : +CSQ: 3,99
2019-09-03 21:48:26 PDT D (5550679) simcom: rx line ch=3 len=23 : +CROPS: 0,0,"T-Mobile",2
2019-09-03 21:48:26 PDT D (5550699) simcom: rx line ch=3 len=2 : OK
2019-09-03 21:48:49 PDT I (5573959) wifi: bcn_timout,ap_probe_send_start
2019-09-03 22:11:45 PDT I (10539) housekeeping: System considered stable (RAM: 8b=113788-133780 32b=22276)
2019-09-03 22:11:47 PDT D (12539) simcom: tx scmd ch=0 len=103 : AT+CPIN?;+CREG=1;+CTZU=1;+CTZR=1;+CLIP=1;+CMG$
2019-09-03 22:11:49 PDT D (14539) simcom: tx scmd ch=0 len=16 : AT+CGMR;+ICCID
2019-09-03 22:11:53 PDT D (17539) simcom: tx scmd ch=0 len=8 : AT+COPS?
2019-09-03 22:11:54 PDT D (18539) simcom: tx scmd ch=0 len=20 : AT+CMUXSRVPORT=3,1
2019-09-03 22:11:55 PDT D (19539) simcom: tx scmd ch=0 len=20 : AT+CMUXSRVPORT=2,1
2019-09-03 22:11:56 PDT D (20539) simcom: tx scmd ch=0 len=20 : AT+CMUXSRVPORT=1,1
2019-09-03 22:11:57 PDT ID 21539) simcom: tx scmd ch=0 len=20 : AT+CMUXSRVPORT=0,5
Logging stopped at 21:48 and resumes at 22:11. I presume the module locked up at 21:48 and that is why it stopped logging. I power cycled the module at 22:11 by unplugging it and plugging it back in. I had previously assumed that the lockups were due to network connectivity issues, but I'm not sure at this point. I suspect it may be locking up while trying to talk on the CAN bus because it's affecting the behavior of the vehicle as well... to the point the vehicle will not respond to clicks from the key fob. Any suggetions as to where I should start looking?