I added the following:-
void setup() {
// Set console baud rate
SerialMon.begin(115200);
delay(10);

SerialAT.begin(115200, SERIAL_8N1, 18, 17, false);
delay(3000);
modem.restart();

and got some responses

23:06:21.706 -> [14189] Wait...
23:06:27.695 -> [20189] Trying baud rate 115200 ...
23:06:30.064 -> [22535] Modem responded at rate 115200
23:06:30.064 -> [22535] Initializing modem...
23:06:35.068 -> [27555] ### TinyGSM Version: 0.11.7
23:06:35.068 -> [27555] ### TinyGSM Compiled Module: TinyGsmClientSIM7600
23:06:45.272 -> [37756] Failed to restart modem, delaying 10s and retrying
23:06:45.272 -> [37756] Initializing modem...
23:06:55.486 -> [47957] Failed to restart modem, delaying 10s and retrying
23:06:55.486 -> [47957] Initializing modem...
23:07:03.779 -> [56269] ### TinyGSM Version: 0.11.7
23:07:03.779 -> [56269] ### TinyGSM Compiled Module: TinyGsmClientSIM7600
23:07:03.843 -> [56316] ### Modem: SIMCOM SIM7600G-H
23:07:03.843 -> [56316] ### Modem: SIMCOM SIM7600G-H
23:07:03.877 -> [56369] ### Modem: SIMCOM SIM7600G-H
23:07:03.877 -> [56369] Modem Name: SIMCOM SIM7600G-H
23:07:03.910 -> [56397] Modem Info: Manufacturer: SIMCOM INCORPORATED Model: SIMCOM_SIM7600G-H Revision: SIM7600G_V2.0.2 IMEI: "redacted" +GCAP: +CGSM
23:07:03.910 -> [56397] Waiting for network...
23:07:03.975 -> [56440] Network connected
23:07:03.975 -> [56440] Connecting to vsh.pp.ua
23:07:04.008 -> [56482] ... failed
23:07:04.008 -> [56482] Requesting current network time
23:07:04.008 -> [56484] Couldn't get network time, retrying in 15s.
23:07:18.986 -> [71484] Requesting current network time
23:07:19.025 -> [71486] Year: 2024 Month: 1 Day: 26
23:07:19.025 -> [71486] Hour: 23 Minute: 7 Second: 3
23:07:19.025 -> [71486] Timezone: 11.00
23:07:19.025 -> [71487] Retrieving time again as a string
23:07:19.025 -> [71506] Current Network Time: 24/01/26,23:07:18+44
23:07:19.185 -> [71672] Battery charge state: 0
23:07:19.185 -> [71672] Battery charge 'percent': 0
23:07:19.185 -> [71672] Battery voltage: 3.80
23:07:19.219 -> [71691] Chip temperature: 37.00
23:07:19.219 -> [71691] End of tests.

thanks.

I am trying to use TinyGSM
has any one got it working with he Core3 COM.X LTE?

but with no luck. get the following:-
22:44:52.276 -> [6988] Trying baud rate 115200 ...
22:45:02.304 -> [16999] Trying baud rate 57600 ...
22:45:12.314 -> [27009] Trying baud rate 38400 ...
22:45:22.312 -> [37019] Trying baud rate 19200 ...
22:45:32.324 -> [47029] Trying baud rate 9600 ...
22:45:42.325 -> [57039] Trying baud rate 74400 ...
22:45:52.334 -> [67049] Trying baud rate 74880 ...
22:46:02.336 -> [77059] Trying baud rate 14400 ...
22:46:12.356 -> [87069] Trying baud rate 28800 ...
22:46:22.358 -> [97079] Initializing modem...
22:46:32.393 -> [107111] Failed to restart modem, delaying 10s and retrying
22:46:32.393 -> [107111] Initializing modem...
22:46:42.440 -> [117143] Failed to restart modem, delaying 10s and retrying
22:46:42.440 -> [117143] Initializing modem...
22:46:52.451 -> [127175] Failed to restart modem, delaying 10s and retrying
22:46:52.454 -> [127175] Initializing modem...

Thanks

test

I give this a go. thanks

please find a simple test for the communication between M5CoreS3 and COM.LTE module.

In the COM.LTE module set the DIP switches as follows:

15 - off
 5 - off
16 - on
13 - off
 0 - off
17 - on

Note: my COM.LTE module takes about 15 seconds (after power on) until it is ready and responds with AT OK.

Thanks
Felix

I see this comment
"I suggest you set COM.LTE to use pins 16 / 17 and then use GPIO18 / 17 in your code. AFAIK PC_RX and PC_TX are the second serial."

not sure if just Dip 5 should change to 16 or 17?? help appreciated.

also in the Code is there a command to tell how to communicate with those different PINS??

first time use of the LTE.
thanks

thank you for pointing that out as I haven't noticed that myself - even the background color matches the connectors.

Thanks
Felix

Thanks for the clarification! The second serial connection is the blue connector, right?

You are correct, on M5CoreS3 GPIO1 and GPIO2 are used for external I2C.

I suggest you set COM.LTE to use pins 16 / 17 and then use GPIO18 / 17 in your code. AFAIK PC_RX and PC_TX are the second serial.

Thanks
Felix