Uart mapping

# UART mapping on FMUv1/2/3/4:
#
# UART1            /dev/ttyS0        IO debug
# USART2        /dev/ttyS1        TELEM1 (flow control)
# USART3        /dev/ttyS2        TELEM2 (flow control)
# UART4              ???              ???
# UART7              ???              CONSOLE
# UART8              ???               SERIAL4

FROM ROMFS/pxffmu_common/init.d

Its incompleted right ??Do someone know the full mapping ?

maybe this can help:

in this article ,there is a picture:

Tank you a lot ! It will help