Younes_Thabet

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    Younes_Thabet reacted to martinayotte in pmw on orange pi one isn't 3.3v in magnitude!   
    I think the Main DT doesn't specify the pin PA5, but the /boot/dtb/overlay/sun8i-h3-pwm.dtbo overlay does ...
    So, better use that overlay, simply by adding "overlays=pwm" in the /boot/armbianEnv.txt and reboot.
    I did some tests on my OPiZero and it worked, adjusting the period and duty-cycle, etc ...
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    Younes_Thabet reacted to martinayotte in use OPIone microusb for touch in a waveshare screen instead of usb   
    Ok ! You probably have this error in "dmesg" like I got :
    sun4i-usb-phy 1c19400.phy: Couldn't request ID GPIO This is a bug probably introduced several months ago !
    I don't have yet a real solution/fix, but at least I have a workaround :
     
    Download the DT compiler using "wget http://ftp.debian.org/debian/pool/main/d/device-tree-compiler/device-tree-compiler_1.4.7-3_armhf.deb " , and then installing it using "dpkg -i device-tree-compiler_1.4.7-3_armhf.deb"
     
    Then, decompile current DTB into DTS using "dtc -@ -I dtb -O dts -o sun8i-h3-orangepi-one.dts /boot/dtb/sun8i-h3-orangepi-one.dtb".
     
    Edit this DTS to change "dr_mode" from "otg" to "host" in the "usb@1c19000" node, and comment out the "usb0_id_det-gpios" line in the "phy@1c19400" node.
     
    Recompile DTB from this DTS "dtc -@ -I dts -O dtb -o /boot/dtb/sun8i-h3-orangepi-one.dtb sun8i-h3-orangepi-one.dts" and then reboot. The USB0 should be powered ...