I have a vehicle computer with a internal 3G PCIe card for cellular communications, but I can't figure out which serial port I have to use in order to send AT commands.
This computer also includes a GPS onboard where I can access very well through
/dev/ttyS5 with a speed of 9600. I have been reading some documents and I have seen that the 3G card speed should be 115200. This 3G PCI card is a "Telit HE910 Mini PCIe data card" and I'm running on Ubuntu 14.04.
Also, I have been trying to open a serial com with n (0...5) ports as below without results:
stty -F /dev/ttySn ispeed 115200 && cat </dev/ttySn
sudo setserial -g /dev/ttyS it yields:
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4 /dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3 /dev/ttyS2, UART: 16550A, Port: 0x03e8, IRQ: 5 /dev/ttyS3, UART: 16550A, Port: 0x02e8, IRQ: 7 /dev/ttyS4, UART: 16550A, Port: 0x02f0, IRQ: 11 /dev/ttyS5, UART: 16550A, Port: 0x02e0, IRQ: 10
Please, help to figure out how to access this 3G card through a serial port to send AT commands.