The UART3 also have the I2C bus 2 functions so moving GPS to UART7 to
have one additional I2C.
To keep GPS working is also necessary update the FPGA RTL to version
0xC1 or higher.
This saves almost 2kb of RAM when using the mavlink shell. 70 matches the
size of the mavlink message. Since the pipe is blocking, a process writing
a lot of data will just wait, data will not be dropped.
The mavlink shell is the only process creating a pipe.
This board don't have a SDCard to save crash dumps and it was causing
the board to get stuck into '[boot] There were %d reboots with Hard
fault that were not committed to disk - System halted', until user
connect to the serial console and clear the fault.
Remove what's not used like SPI and UART ports, ADC, etc. Add UART5 and
I2C1 that are going to be used.
This also received contribution from
José Roberto de Souza <jose.souza@intel.com>.
David Sidrane
Beat Küng
José Roberto de Souza
Lucas De Marchi