[Touch coordinates dosn't respond with screen rotation!]

Hello,

I am using OPI one with Armbian_5.90_Ubuntu_bionic_4.19.57, so I fliped my 7" touch screen display vertically (rotated 180) by modifing:

/etc/X11/xorg.conf/01-armbian-defaults.conf

and it worked, but the touch doesn't correspond with it (still points as it was before rotation).

 

how can i flip the touch information (x,y) coordinates vertically (rotate by 180)?

 

Regards,

[pmw on orange pi one isn't 3.3v in magnitude!]

32 minutes ago, martinayotte said:

simply by adding "overlays=pwm" in the /boot/armbianEnv.txt and reboot.

It didn't work hahaha, but thanks for your help.

i will post the solution once i get it to work properly.

 

[pmw on orange pi one isn't 3.3v in magnitude!]

@martinayotte
Sir, do you have any idea what could be wrong with the 330mv pwm issue!? normally it should be 3.3V, right!?

 

Thanks in advance.

[pmw on orange pi one isn't 3.3v in magnitude!]

30 minutes ago, martinayotte said:

This is only the pins definition, you need to search for "serial@1c28000" node and change the "status" there ...

i did change the satatus but no luck!!

 I have my pwm and all but it's peak value is around 330mv not 3.3v ...so maybe the problem is with pull-up resistors !? IDK!

[pmw on orange pi one isn't 3.3v in magnitude!]

23 minutes ago, martinayotte said:

You need to decompile DTB into DTS, edit the DTS by changing "status" from "okay" to "disabled" for uart0 node and vice-versa for pwm node, then recompile DTS into DTB and reboot.

I did decompile DTB into DTS, and this is what i found:

 

uart0 {
pins = "PA4/0PA5";
function = "uart0";
phandle = < 0x19 >;
};

 

 

pwm@1c21400 {
compatible = "allwinner,sun8i-h3-pwm";
reg = < 0x1c21400 0x08 >;
clocks = < 0x0e >;
#pwm-cells = < 0x03 >;
status = "disabled";
phandle = < 0x56 >;
};

 

there is no status line in uart0 and all other peripherals (spi i2c i2s ...) i tryed to change the status of pwm to "enabled" but with no luck!?

[pmw on orange pi one isn't 3.3v in magnitude!]

Hello all,

 

I used using opi one with (Armbian_5.90_Ubuntu_bionic_4.19.57) image. and used the uart0 pins for hardware pwm but the output was around 330mv pwm not 3.3v as i want.

my initial thoughts was either the uart0 isn't disabled or there are no pull ups activated, although i tryed using this: https://github.com/iboguslavsky/pwm-sunxi-opi0

Remap pins in FEX:

; Disable debug

UART0 [uart_para]

uart_debug_port = 0

uart_debug_tx = port:PA04<2><1>

uart_debug_rx = port:PA05<2><1>

 

; Enable PWM0 on PA05

[pwm0_para] pwm_used = 1

pwm_positive = port:PA05<3><0>

 

but there is no FEX but DTB files and i didn't know how to disable uart0 and activate pwm in DTB/DTS files.

 

so how can i get a 3.3v pwm on uart0 (hardware pwm) ?

[use OPIone microusb for touch in a waveshare screen instead of usb]

19 minutes ago, martinayotte said:

You probably need to change the "dr_mode" from "otg" to "host" in the DT.

excuse me sir, could you show me the file where i can find the dr_mode!? i am a noob.

[use OPIone microusb for touch in a waveshare screen instead of usb]

Hello all,

 

I have a 5" waveshare touch screen connected (touch screen cable) to an orange pi one through usb with a separate power cable for screen, and it works fine. but when I used the (microusb to microusb cable) for the touch  it doesn't work..

 

is there any way to make it work!? because i need the usb for something else and i can't use a usb hub for it's too big for my application.

 

Regards, 

 

 

[why some armbian images have script.bin in /boot and some doesn't!?]

Yes, i used the oscilloscope to see the signal... it was working all the time i just had a bad connectivity that's all..

 

Thank you sir for your support. 

[why some armbian images have script.bin in /boot and some doesn't!?]

thanks again for the quick answer @martinayotte,

 

i see from your answer that i don't need to modify a .dtb file but just add lines to armbianEnv.txt ... so i did  add the "overlays=pwm" to armbianEnv and rebooted but when i use the PA05 pin i got a noisy signal, maybe i need to disactivate uart0 first, idk!     

 

I sure need to read more about overlays.

[why some armbian images have script.bin in /boot and some doesn't!?]

15 minutes ago, martinayotte said:

This is one of the major differences between Legacy and Mainline images.

thank you for the answer, sir.

 

I want to remap the uart0 to be pwm on the PA05 according to https://github.com/iboguslavsky/pwm-sunxi-opi0 , i used to do this using script.bin in /boot...now i don't know how to do that!?

could you please show me the file to configure pwm? 

 

[why some armbian images have script.bin in /boot and some doesn't!?]

I have orange pi one with Armbian Xenial desktop legacy kernel 3.4.y which have a script.bin file in /boot directory and doesn't have /boot/dtb directory ...but when i installed Armbian Bionic mainline based kernel 4.19.y, I found the .dtb files but not the script.bin ....now i don't know how to configure both touch screen and the pwm pin!

 

is the .dtb file (sun8i-h3-orangepi-one.dtb) is the same as script.bin or orangepione.bin ?

if so, how to configure it? because i am used to convert the script.bin to .fex to configure it and then back to .bin.

[can't install armbian on eMMC for orange pi win plus]

Hello all,

 

Recently, I bought an Orange Pi Win Plus board and have installed Armbian on SDcard and it works fine but when i try to install it on emmc using "sudo nand-sata-install" it just shows "install/update the bootloader on SD/eMMC" in the options instead of "boot from eMMC - system on eMMC" as i have seen on the internet .

 

so guys! what am i doing wrong!?

 

Regards,