Hi.
I'm trying to connect my orange pi to pc using UART3 but it doesn't work.
I connected UART3 to my pc using USB to serial converter and my pc recognized it.
so I open a serial session in putty.
then when I tried to connect in orange pi it doesn't work.
I tried command
minicom -b 9600 -D /dev/ttyS3
but it doesn't work.
system properties:
Linux orangepipcplus 4.19.62-sunxi #5.92 SMP Wed Jul 31 22:07:23 CEST 2019 armv7l GNU/Linux
dmesg | grep tty output:
[ 0.000000] Kernel command line: root=/dev/mmcblk0p1 rootwait rootfstype=ext4 console=ttyS0,115200 console=tty1 hdmi.audio=EDID:0 disp.screen0_output_mode=1920x1080p60 panic=10 consoleblank=0 loglevel=1 ubootpart=a7e8d17a-01 ubootsource=mmc usb-storage.quirks=0x2537:0x1066:u,0x2537:0x1068:u sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_fb_mem_reserve=16 cgroup_enable=memory swapaccount=1
[ 0.000186] console [tty1] enabled
[ 1.903679] console [ttyS0] disabled
[ 1.923829] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 44, base_baud = 1500000) is a U6_16550A
[ 1.923882] console [ttyS0] enabled
[ 1.946824] 1c28400.serial: ttyS1 at MMIO 0x1c28400 (irq = 45, base_baud = 1500000) is a U6_16550A
[ 1.969687] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 46, base_baud = 1500000) is a U6_16550A
[ 1.990464] 1c28c00.serial: ttyS3 at MMIO 0x1c28c00 (irq = 47, base_baud = 1500000) is a U6_16550A
and output of
cat /proc/device-tree/soc/serial@1c28c00/status
is okay.
and armbianEnv.txt contains:
verbosity=1
console=both
overlay_prefix=sun8i-h3
overlays=i2c0 uart1 uart2 uart3 usbhost0 usbhost1 usbhost2 usbhost3
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u
Thanks for your help.
