GPIO and USB - one or the other?

[bigal.nz]

Do these hats needs to be plugged into the GPIO headers and USB or can you just pick one or the other?

i.e. could I just use stand off screws and plug in only via USB?

Also I notice the modem added /dev/ttyUSB0, /dev/ttyUSB1, /dev/ttyUSB2, /dev/ttyUSB03 - which one do I use when issuing commands?

I also notice that minicom does not echo the AT commands? The tutorials are silent on this.

AT responds with OK.

AT+CPIN? has no response - what could be the issue?

The tutorials talk about rebooting the module after updating usbnet - but again no information on how to reboot.

Thanks

Al

[ensar]

Hi,

@bigal.nz

Do these hats needs to be plugged into the GPIO headers and USB or can you just pick one or the other?

i.e. could I just use stand off screws and plug in only via USB?

You can choose either or both. Yes, you can use it only via USB. Choose whichever suits your application.

@bigal.nz

Also I notice the modem added /dev/ttyUSB0, /dev/ttyUSB1, /dev/ttyUSB2, /dev/ttyUSB03 - which one do I use when issuing commands?

For general use, you can use /dev/ttyUSB2 & /dev/ttyUSB3 ports.

@bigal.nz

I also notice that minicom does not echo the AT commands? The tutorials are silent on this.

For details on how to use minicom, refer to the following webpage.

minicom(1) - Linux man page

@bigal.nz

AT responds with OK.

AT+CPIN? has no response - what could be the issue?

To see the result code of the error, enable the verbose error reporting with AT+CMEE=2 , then try to run the AT commands you get the error.