skem5

Hi @Gustavo dos Anjos, Where you able to get this working? I have a similar issue with OrangePi One

HI, I am hoing someone can help. I cannot seem to get UART1 working on Orange Pi1. Uart2 and Uart3 are working just fine. Everything indicates that the port is enables on the module but there is no actual data being sent out of PINs 38 and 40. Verifying that the port is enabled root@orangepione:~# dmesg | grep tty [ 0.000000] Kernel command line: root=UUID=1d571c77-01ce-4f06-a2dd-23d24e7835b0 rootwait rootfstype=ext4 console=ttyS0,115200 console=tty1 hdmi.audio=EDID:0 disp.screen0_output_mode=1920x1080p60 consoleblank=0 loglevel=1 ubootpart=2e9b222d-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 [ 0.000424] printk: console [tty1] enabled [ 1.520885] printk: console [ttyS0] disabled [ 1.520978] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 45, base_baud = 1500000) is a 16550A [ 1.521228] printk: console [ttyS0] enabled [ 1.522422] 1c28400.serial: ttyS1 at MMIO 0x1c28400 (irq = 46, base_baud = 1500000) is a 16550A [ 1.523263] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 47, base_baud = 1500000) is a 16550A [ 1.524095] 1c28c00.serial: ttyS3 at MMIO 0x1c28c00 (irq = 48, base_baud = 1500000) is a 16550A [ 5.268058] systemd[1]: Created slice system-getty.slice. [ 5.270115] systemd[1]: Created slice system-serial\x2dgetty.slice. root@orangepione:~# root@orangepione:~# ls /sys/class/tty/ttyS* -lh lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS0 -> ../../devices/platform/soc/1c28000.serial/tty/ttyS0 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS1 -> ../../devices/platform/soc/1c28400.serial/tty/ttyS1 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS2 -> ../../devices/platform/soc/1c28800.serial/tty/ttyS2 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS3 -> ../../devices/platform/soc/1c28c00.serial/tty/ttyS3 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS4 -> ../../devices/platform/serial8250/tty/ttyS4 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS5 -> ../../devices/platform/serial8250/tty/ttyS5 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS6 -> ../../devices/platform/serial8250/tty/ttyS6 lrwxrwxrwx 1 root root 0 Jan 1 1970 /sys/class/tty/ttyS7 -> ../../devices/platform/serial8250/tty/ttyS7 root@orangepione:~# I have tried different boards and i still cant get it to communicate on UART1