I have (an awesome) Onion Omega2+ SBC and an A9G GPS/GSM module. The module has two UART ports. I can easily read data from the UART_GPS but for some reason I cannot communicate with the UART port for the GSM chip. When I connect it to my Mac however, I can easily send and read commands. I can also connect to the UART of the Omega2+ and write to and from it. I probably miss some small thing but I just can't find what that is.
When using on my Mac:
Radeks-MBP:~ neo$ stty -f /dev/tty.usbserial-0001
speed 9600 baud;
lflags: -icanon -isig -iexten -echo
iflags: -icrnl -ixon -ixany -imaxbel -brkint
oflags: -opost -onlcr -oxtabs
cflags: cs8 -parenb
When trying to use it from Omega2+:
root@Omega-9A9F:~# stty -F /dev/ttyS2
speed 9600 baud; line = 0;
min = 100; time = 2;
-icrnl -imaxbel
-opost -onlcr
-isig -icanon -echo
Can anyone see what the issue might be here?
Regards, Radek