Hello. I am able to open up the serial shell (to access the command line) through ttyACM0 (micro usb port).
But, Is it possible to open up the serial shell from another UART or I2C (example, ttyS1/TELEM1) ?
PD
An FTDI 3.3V cable is being used for that, as it has been done with pixhawk here
http://ardupilot.org/dev/docs/interfacing-with-pixhawk-using-the-nsh.html
https://groups.google.com/forum/#!topic/px4users/NVBtASKSlBs