Openelec Build for OPI PC and 2 now with HW decoding

jernej · Published in 2016-7-18 06:05:15

hav replied at 2016-7-17 15:30
Jernej Hi , could you explain one thing ? Why the Raspberry Pi vnc service does not work exactly ? D ...

Not sure about vnc, but if the program is using Dispmanx, which is likely, then it doesn't work because DispmanX is RPi only stuff. If it's using any Kodi framegrabber functionality, then it doesn't work, because it is not implemented in my port.

chaszim · Published in 2016-7-18 09:17:53

giaur500 replied at 2016-7-17 17:12
Have anybody tried audio scrapper? I tried any available but not working, no info retrieved

How do you go about testing it?

chaszim · Published in 2016-7-18 09:34:05

Edited by chaszim at 2016-7-18 10:58

jernej replied at 2016-7-18 05:54
Do you have any USB to serial cable? We might get additional info if you connect it to RX TX and G ...

No I don't have a USB to serial cable yet. I know Putty is the term program needed. But, how does this relate, to the unit going into Standby mode, on cold boot???

jernej · Published in 2016-7-18 13:43:50

chaszim replied at 2016-7-18 02:34
No I don't have a USB to serial cable yet. I know Putty is the term program needed. But, how does t ...

Because there is a lot of text output which would probably tell us where the problem is. Without it, I couldn't debug half of issues. It would be like dmesg, but during boot, suspend, etc. Also additional messages can be turned on... This is great tool to find the issue.

chaszim · Published in 2016-7-18 22:58:33

Edited by chaszim at 2016-7-19 10:59

jernej replied at 2016-7-18 13:43
Because there is a lot of text output which would probably tell us where the problem is. Without i ...

OK, I'm kind of limited, but, I'll see what I can rig up. I find the pinout for USB-A in lots of places on the web, but, none of them seem to say what -D +D USB is related to TX & RX Serial??
And I've found a suitable USB to 4 pin Din plug, just not sure of it's order on the din side of the cable.
I normally don't subscribe to the "Just go for it" mentality. Though if " pin 2 Green -D & pin 3 White +D" (I removed Red pin1 Power, out. & left pin4 Ground alone) are reversed, it will simply fail, with no damage, just garbage if anything.
I'll need some help how to set up the putty session, it's been quite a while, since I've talked over serial to another device.

andreq · Published in 2016-7-19 22:53:48

You want the "Debug TLL UART" pins... don't plug anything in the D- and D+ related to serial!!!

jernej · Published in 2016-7-19 23:43:36

A top of what andreq said, be aware that UART pins use 3.3V logic, don't use 5V! You can find tons of such adapters on ebay. For example http://www.ebay.com/itm/USB-to-T ... :g:6rIAAOSwVFlUHIk9

chaszim · Published in 2016-7-20 06:38:53

Edited by chaszim at 2016-7-20 12:18

andreq replied at 2016-7-19 22:53
You want the "Debug TLL UART" pins... don't plug anything in the D- and D+ related to serial!!!

Right, TX, RX & Gnd is the TTL Uart, (which is where I'm plugged). But, the USB cable (I'm having to build) lists pin out as, 1: B+(5v which is eliminated), 2:-D, 3:+D, & 4:Gnd. So, which is which, is -D is used for, TX or RX?? I've now tried both directions swapping (TX/Rx) pins, and still can't get a handshake from putty.

andreq · Published in 2016-7-20 21:58:21

chaszim replied at 2016-7-20 06:38
Right, TX, RX & Gnd is the TTL Uart, (which is where I'm plugged). But, the USB cable (I'm having t ...

STOP!! You can't just go and plug USB > UART!
Hopefully your motherboard have some protection and it didn't blow the USB fuse.

Here's what you need :

https://www.sparkfun.com/products/9717 (ignore the 5v VCC pin!)

Or any other kind of USB to Serial converter cable that run on 3.3v logic. (see jernej post)

There need to be some kind of logic chip in between the UART and USB to talk to the computer.

chaszim · Published in 2016-7-21 01:49:38

andreq replied at 2016-7-20 21:58
STOP!! You can't just go and plug USB > UART!
Hopefully your motherboard have some protection and ...

Initally Jernej said nothing (in his first response/request post) about, needing a cable, having any kind of interface, between the devices. If it's a true to TTL, it's signals are all ready set (IEEE standard) no greater than 5vdc, it will be sending (Tx) & receiving (Rx) as "Square Wave" signals. So, with a less than 3 ft (shielded) cable, between the devices, signal degreation (Roll Over) should be of no concequence. Which is about all the interface device would be correcting for, unless your worried about power isolation. Which again unless your applying power to the cable to pull up Tx & Rx, which then your not in a true Null Modem Cable. Has anyone actually tested, and can confirm, that a regular null modem cable, will not work, or will cause damage to the device??? Because, the responce lag time is one thing, then I've got to wait several more days for a propper interface cable. And I still don't have a handle on setting up PuTTY. Does it really need to be this frustrating?