I am using a USB GPS (u-blox chipset, /dev/ttyACM0) and at boot or when the device is plugged in, the baud rate is 9600. How can I configure my system so that the baud rate is 115200 or higher at startup or when it is plugged in? (I know the stty -F 115200 /dev/ttyACM0 will change the baud rate, but I want 115200 to be the default)
More generally, does the baud rate for USB devices behave the same way as for UART devices? The reason I ask is that the u-blox GPS allows for the setting of baud rates for the UART interface, but not for USB interface. This implies that the USB interface handles baud rates differently. than UART. Is this correct?