tbsky
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Posts posted by tbsky
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10 hours ago, Werner said:
Armbian support divides into two pieces: firmware and userspace.
Your userspace is Debian 10 which will receive updates till June 2024.
Firmware (kernel/boot loader) development continues as long as device is supported.
thanks a lot for the information!
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Hi:
I am using armbian build on Debian 10(buster). I wonder how long I can get update if I don't upgrade to Debian 11(bulleye). I am satisfied with the current OS. if possible I want to continue use buster until Debian 12 comes out, but I don't know how long will armbian support old debian releases.
thanks a lot for the hint!
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On 5/9/2020 at 4:49 PM, xwiggen said:
Note I do use headless, no usb no wifi no network-manager, you will need to adapt the blacklist according to your needs (board, used features).
thanks a lot for the hint. my usage is headless too. no wifi no network-manager but maybe with usb sometimes.
your blacklist would be great help.
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Hi:
I am new to Armbian Buster. I understand the legacy h3consumption is gone now. I wonder if I can do something similar under Armbian Buster like:
1. only allow 1 or 2 core
2. lower ram frequency
3. disable hdmi
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Hi Werner & Igor:
thanks a lot for the advice. now I understand Armbian buster will be my best choice. thanks again for your kindly help!!
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Hi:
I am using debian jessie on orange pi H3 boards and I am very satisfied with it. but I need to upgrade now since jessie is out of support. i want to upgrade to debian buster since my pi is using as a server without any display attached. but I wonder maybe there is something good I missed from ubuntu: like 10 years LTS support? or perhaps most developers are using ubuntu so it is more mature?
just need some advice. thanks a lot!
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17 minutes ago, guidol said:
armbian jessie ist mostly debian jessie. jessie-packages had been archived
So if you use the following content as /etc/apt/sources.list (and check for a empty /etc/apt/sources.d directory),
then its possible to get to the latest jessie-version of the packages:
deb http://archive.debian.org/debian/ jessie main contrib non-free # deb-src http://archive.debian.org/debian/ jessie main contrib non-free deb http://security.debian.org/ jessie/updates main contrib non-free # deb-src http://security.debian.org/ jessie/updates main contrib non-free deb http://archive.debian.org/debian jessie-backports main contrib non-free # deb-src http://archive.debian.org/debian jessie-backports main contrib non-freeyes debian jessie is still there. but the armbian jessie packages are gone. like "linux-image-sun8i_5.75_armhf.deb". I got some of them. I just hope I have last chance to sync these great packages.
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hi:
I have old allwinner H2/H3 boards which work very stable with armbian jessie. although I can still get debian jessie packages, I found armbian jessie packages are gone from apt.armbian.com. is there any place I can sync these armbian jessie packages?
thanks a lot for your help!!
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how about the temperature of the new orange pi zero LTS?
orange pi zero ver 1.0 is cool. ver 1.4 and ver 1.5 are hot.
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12 hours ago, Igor said:
Try adding to /boot/armbianEnv.txt
extraarg=thiswatchdogparameter=value
Wrote on mobile
Hi:
thanks a lot for your hint!!
google "armbianEnv.txt" I learn a lot of things.
BTW, I can use "extraargs" to add boot parameters now.
thanks again for your kindly help.
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Hi:
sorry for asking it again. anybody know how to add boot parameter to legacy armbian 3.4? do I need to re-compile something to do the work?
thanks a lot for help!!
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Hi:
I want to add "nowayout" watch dog parameter to my orange pi pc. I think the syntax should be "sunxi_wdt.nowayout=1". but I don't know how to add this to kernel boot parameter in armbian? is there a config file to add boot parameter?
BTW I found if I shut down my orange pi PC normally, I can not restart it unless I unplug/plug the power cord. is this behavior expected?
thanks a lot for help!!
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25 minutes ago, guidol said:
What model/name does your new converter have? do you got a picture
Hi:
sorry I don't have name. there are tones of converters in the market and they basically looks like the same. the new and old one both use SP3232EEN.
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On 5/27/2018 at 8:24 PM, martinayotte said:
To test your current RS232 Level Converter, simply add a loopback wire between TX and RX, then you should get echo while typing in minicom.
Hi:
thanks for the hint. it is easier to do the test.
today I got new converters and they are fine. I don't know what happened to my original converter. I saw some people said there are many fake chips which can only do 9600 bps. but since the new converter works fine, I don't want to bother what happened to my old converter.
thanks for all the help!! now I can minicom my routers!
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9 hours ago, arox said:
"since I can use the converter from RS323 to TTL, I think it is working. it just can not convert from TTL to RS232."
There is no "from" / "to" usage ! You transmit characters in both direction whatever you are doing with the converter : when you type a character in a serial console, it is sent to the other end and the othe end send it back so it is displayed on screen
"could anyone test his converter if control the router/switch via SBC works?"
"control" is just an application. If you can "control" the SBC from PC, then the hardware is OK because that mean you can transmit AND receive characters - and both ends are transmitting and receiving. So your problem is only software.
Your software needs only to take into account the fact that YOUR RS232 cable transmit or shunt the control wires and the flow control wires - or not. If we donnot use the same software, we can have our app working and you not.
If I understand well, "control" mean you want to acces the "console interface" of the router. Then the application is a shell on the router and minicom on SBC. And you cannot modify the software ! So you need to use a good RS232 null modem cable because that sort of device use DTR/DSR control.
Hi:
there is some difference in hardware. when I minicom from PC to SBC, the SBC is using UART0. when I minicom from SBC to router, the SBC is using UART1. I have test the router and it only need RX/TX/GND to work, no need for CTS/RTS/DTR/DSR.
after more searching, I found maybe my converter is not good enough. so I ordered more converters to see if there is any difference. it will take two days to arrive so I can continue the experiment.
thanks a lot for all the help! I will report the results later.
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9 hours ago, guidol said:
Do you power via the VCC Pin (only RX,TX,GND isnt powered) - and with how much Volt?
Specifications
Operating voltage: 3.3V-5V DC
Operating current: 6mA
Power supply: external
Which RS232 cable/adapters do you use? maybe if more than 1 nullmodem will switch back to RX/RX and TX/TX.
Or did you use gender changers or 9->24pin adapters?
Hi:
I tried 3.3V and 5V VCC. and I use wires to connect the pins one-by-one, so I can switch tx/rx at each side easily. since I can use the converter from RS323 to TTL, I think it is working. it just can not convert from TTL to RS232.
after observation, I think one side of the converter is "tx,rx,gnd,vcc"(TTL) and the other side is "tx,rx,gnd"(RS232).
maybe I should try more converters for testing. could anyone test his converter if control the router/switch via SBC works?
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2 minutes ago, guidol said:
Maybe you have only to disable handshake (RTS/CTS, XONN/OFF) or do build a non-handshake-cable.
hi:
thanks for the hint. I will try to build a no handshake cable for testing.
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38 minutes ago, arox said:
I bought the FriendlyArm converter to get access to my "legacy" PC on console port ... but I never bothered to use it !
If you can use minicom on the PC to send and receive characters from the SBC, then your links and the converter is working. If you intend to get a login prompt from the PC using minicom on the SBC, then you may have a problem with DCD, DTR/DSR.
Because of security, a login should be permitted and a session maintained on serial line (by default) only if the Carier Detect (DCD) is asserted and maintained - and Data Set (=modem) Ready (DSR) received (the session is closed if the modem hangup)
Hi:
I don't want to use SBC to login PC. but I do want to use the SBC as PC, so I can minicom to other network device like routers,switches..etc.
to clarify the problem, I try to test PC RS232 connection to a MicroTik router. and I found the rs232 pin need to use TX/RX/GND. only TX/RX is not enough. in contrast when I use SBC uart1 to connect uart2 directly via minicom, two wires TX/RX are enough to get login screen. I don't really understand the technical details, just confused about the situation.
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54 minutes ago, arox said:
How is your converter powered ? (The converter need to provide positive/négative tensions - theorically 15V for the PC). And check you really provide 3.3V for the sake of your SBC !
"RS232" has no "initialisation" phase but some circuit (DTR, DSR, RTS, CTS, DCD ...) to coordinate the transmission on Tx, Rx circuit. You need to program drivers at both end to ignore the flow control circuits or have them shunt (RTS with CTS for the flow control, DTR and DSR with DCD for the peer detection)
hi:
the converter is powered by orange pi pin. the strange part confused me : it is working if I use PC minicom program to control orange pi uart0, but it is not working when I use orange pi uart1 to control other network device via minicom. (flow control all disabled)
I have tried to use orange pi uart1 to connect uart0 directly and it is working fine, so I think uart1 configuration is ok.
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15 minutes ago, guidol said:
Does your converters got a connector for power like the
http://www.friendlyarm.com/index.php?route=product/product&product_id=89
for a NanoPi?
hi:
my ttl part has rx/tx/gnd/vcc, like this :
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1 hour ago, Gavinb said:
You probably need to level shift your voltages.
The orange pi has 3.3v signals, and your rs232 converter is most probably a 5v device.
Try looking here http://www.hobbytronics.co.uk/mosfet-voltage-level-converter for a simple level shift circuit.
Hi:
I can use the rs232-ttl converter to control orange pi via PC, so I think the voltages is ok?
I just don't know why ttl can not control rs232, it seems related to rs232 initialization or something?
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hi:
I want to use my orange pi to control some network devices which has rs232 console port. so I enable uart1 as 2 pin mode, and buy some rs232-ttl converter board.
then I found these rs232-ttl converters is not working under my situation.
they do work when I use my PC to control orange pi (so this is RS232 -> TTL).
they don't work when I use my orange pi to control rs232 device (so this is TTL-> RS232, not working).
it seems there is something difference between RS232->TTL and TTL->RS232.
now I wonder if TTL->RS232 possible? or I need enable 4 pin mode and find another kind of converter for the work?
thanks a lot for your help!
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Hi:
I was using version 5.30 at orange-pi-pc and orange-pi-one. it is very stable. I saw some irq complain about 5.35, but I don't know if these issues affect H3 boards. I use the boards as headless server with openvpn and some DI/DO. is version 5.35 stable enough for the work? or I should stick with 5.30?
thanks a lot for advice.
how to improve chromium experience
in Allwinner sunxi
Posted
Hi:
I use orange pi pc to build a little chromium kiosk for showing some static information(like temperature). most things are fine. but there is a electronic scroll bar which is not running smooth. I check my current environment (armbian 22.08 with ubuntu 22.04) that I am running xorg with fbdev driver. I wonder if there is other things I can try for the hardware? I search the forum and I found there is "lima" driver, but I don't know if I am using it or not. I can see "lima" is loaded via "lsmod" but am I using it currently? I hope the orange pi pc can do better with newer driver. if not, what's the next armbian pi I should buy to get better chromium experience?
thanks a lot for help!!