NTP Fails error 61 - Githubissues

Michaelcombs commented 1 year ago

NTP always fails with error 61.

I'm connecting via LTE and CAT-M. I am able to open TCP connections for MQTT and streaming. I have included my AT command sequence. I am using TinyGSM with TINY_GSM_MODEM_SIM7000SSL.

AT+CFUN=1 OK AT+CNMP=38 OK AT+CMNB=1 OK AT+CEREG? +CEREG: 0,0 OK AT+CGREG? +CGREG: 0,1 OK AT+CEREG? +CEREG: 0,0 OK AT+CGREG? +CGREG: 0,1 OK AT+CNACT=0 ERROR AT+CGDCONT=1,"IP","IoT.simon" OK AT+CGATT=1 OK AT+CNCFG=1,"IoT.simon" OK AT+CNACT=1,"IoT.simon" OK +APP PDP: DEACTIVE AT+CNACT=1,"IoT.simon" OK +APP PDP: ACTIVE DST: 1 *PSUTTZ: 23/05/08,03:16:23","-20",1 AT+CNTPCID=1 OK AT+CNTP="pool.ntp.org",0 OK AT+CNTP OK +CNTP: 61

trentp-igor commented 1 year ago

It doesn't work for me either.

I tried sending UDP packets to the NTP port of a server I can monitor, with at+caopen=9,0,"UDP","server",123,1 and at+casend=9,length, and this worked. So sending NTP packets can apparently work.

But when I use at+cntp I get nothing on the server.

trentp-igor commented 1 year ago

Got it to work. I'm using the SIM7070G model. Maybe it's necessary to manually specify the pdp context in the cntp command?

AT+CNACT=1,1
OK
+APP PDP: 1,ACTIVE

AT+CNACT?
+CNACT: 0,0,"0.0.0.0"
+CNACT: 1,1,"100.198.223.226"
+CNACT: 2,0,"0.0.0.0"
+CNACT: 3,0,"0.0.0.0"

AT+CNTP="time.cloudflare.com",-28,1,2
OK

AT+CNTP
OK
+CNTP: 1,"2023/05/15,05:09:31"

It seems to have ignored the timezone (-28) and reported UTC time.

Xinyuan-LilyGO / LilyGO-T-SIM7000G

NTP Fails error 61 #234