PRI_UART
is connected to FPGA, configuration depends on FPGA (usually 8N1 115200 baudrate)AUX_UART
is connected to FPGA, configuration depends on FPGA (this UART is usually routed to RTM through FPGA, usual configuration: 8N1 115200 baudrate)MMC_CONS_PROG
is connected to MMC, configuration is 8N1 115200 baudrate (again, can be changed by changing settings in MMC firmware)
Usually on Windows 10 and Linux no additional drivers are needed for the USB-UART bridge (FT4232H). Please refer to the FTDI website in case of missing drivers in your system. Drivers allow the user to communicate with the USB interface via a standard PC serial emulation port (TTY).
These UART console appear usually as /dev/ttyUSB1
through /dev/ttyUSB3
on Linux if no other ttyUSB devices are connected (ttyUSB1
- PRI_UART
, ttyUSB2
- AUX_UART
, ttyUSB3
- MMC_CONS_PROG
). /dev/ttyUSB0
is in this case a JTAG connection, usually used by openocd. On Windows with correct drivers, FTDI usually appears as 4 consecutive COM ports. The latter 3 are PRI_UART
, AUX_UART
and MMC_CONS_PROG
.