ZeroWalker Posted October 30, 2017 Share Posted October 30, 2017 As title says, i am try to get the flash thing going on the UART0 on the OPI Zero (the debug ports i guess). But i got no luck, anyone has any experience with this? Thanks:) Link to comment Share on other sites More sharing options...
gungsukma Posted November 6, 2017 Share Posted November 6, 2017 Because UART0 is already used as debug, as you guess. Why not use UART1 /dev/ttyS1 (Pin #8 = TX, Pin #10 = RX)? (I use mainline kernel) mkdir /sys/kernel/config/device-tree/overlays/uart1 cat /boot/dtb/overlay/sun8i-h3-uart1.dtbo > /sys/kernel/config/device-tree/overlays/uart1/dtbo reboot Link to comment Share on other sites More sharing options...
martinayotte Posted November 6, 2017 Share Posted November 6, 2017 11 hours ago, gungsukma said: mkdir /sys/kernel/config/device-tree/overlays/uart1 cat /boot/dtb/overlay/sun8i-h3-uart1.dtbo > /sys/kernel/config/device-tree/overlays/uart1/dtbo reboot Working with /sys/kernel/config/device-tree/overlays are volatile commands. Doing a "reboot" after is completely useless ! If you wish the overlays been present at boot time, either doing the /sys/kernel/config/device-tree/overlays above commands in /etc/rc.local or enable then in u-boot using "overlays=uart1" in /boot/armbianEnv.txt Link to comment Share on other sites More sharing options...
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