Serial console UART1 on J23 - Fire TV General

Unfortunately my FTV has not arrived yet and I have to wait some more weeks for it but it is likely to arrive with the latest firware on it so no rootable.
Thanks to the teardown on ifixit i came across this pic: https://d3nevzfk7ii3be.cloudfront.net/igi/eLJCXWQxVZauAOVp
On P23 is a serial console, most likely with the common 3.3V level. It is easily accessible by simply unsnapping the bottom cover of the FTV without further disassembly.
Has anybody hooked up his machine to the console port and got a log from the console showing whats going on? Or is it disabled? As I am really surprised to not find any info about it - especially here on XDA I expected somebody gave it a try already.

Post 17 in the hardware root jtag thread

Related

[PRO] [Q] General tech stuff...

Hi folks,
after some years of extensive usage my Milestone needs a companion
I'm new to the xperia 2011 platform and bought myself a Xperia Pro some days ago.
Right now i'm in the process of fixing the backlight, but in a few days i'm ready to rock...
I really like devices with a hardware keyboard and it's a shame that these devices leave the scene (even more in the EU).
Anyway enough talking...
I'm not the guy who ignores the search function, but i got some specific questions and hopefully someone will put some light on that.
I know as well that we are nearly in the year 2013 and these devices are not up to date, but it's O.K. for me.
In fact there are enough features on this phone and i don't need a heater in my pocket
SoC:
As i looked everywhere there's still no datasheet or register manual floating around...
Apart from the architecture is the MSM8255 comparable to the old MSM7200 if you look at the basic function?
In short:
- memory map ?
- booting scenario: arm9 boots first then armV7 comes up?
EDIT:
It seems these questions are little bit to deep... just asked for curiosity though.
I guess i'll step through kernel code and compare some of the offsets with MSM7200 (we got register manual here).
The background is that i'd like to check some register contents for debugging at a later point...
CWM:
If i got it right there's no true CWM recovery.img for the Pro, if i got it right the CWM is part of the system and loaded to RAM by helpers.
Right or wrong?
How does the partition scheme look like?
Kernel 3.x:
I realized there'd been some attempts to get a 3.x kernels running on these devices, as far as i could conclude from what i read, the situation is as follows...
- SE left the path of standard kernel API, that's why some proprietary libs will always be required (and won't fit 3.x kernel). Right or wrong?
- HDMI part seems to be a problem... but what exactely... kernel driver is missing parts or system lib?
EDIT:
O.K. no answer here from the experts right now...
BTW, just saw the FreeXperia team has opened up a new project for porting 3.4 kernel to 2011 devices
See:
http://forum.xda-developers.com/showthread.php?t=2044262
Guess i'll ask some techie stuff over there :angel:
USB host function:
AFAIK there's no 5V power at the the OTG, but there are drivers for mouse and keyboard etc.
Just in short how does it work?
External Hub?
EDIT:
O.k. i missed some thing... datasheet of BQ24185 (connected to MicroUSB VBUS signal) gave the answer:
Code:
VBUS A1, A2 I/O Charger Input Voltage. Connect to an input supply up to 16V. Bypass VBUS to PGND with a 1μF ceramic
capacitor. [I][B]During boost mode, VBUS is regulated to 5V at up to 300mA to power USB OTG peripherals[/B][/I].
In other words, while in OTG host mode the charger is run in boost mode (could be found in the kernel board file as well).
For the peripheral drivers...
http://forum.xda-developers.com/showthread.php?t=1224676
Debug UART3:
Does anyone know anything about UART3 testpoints on the mainboard?
Code:
static struct msm_gpio uart3_config_data[] = {
{GPIO_CFG(53, 1, GPIO_CFG_INPUT, GPIO_CFG_PULL_UP, GPIO_CFG_2MA),
"UART3_Rx"},
{GPIO_CFG(54, 1, GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, GPIO_CFG_4MA),
"UART3_Tx"},
};
EDIT:
Mmmmh still unsolved... though that these signals were routed to the testpoint area as well.
After doing some measurements this could not be confirmed right now.
Background here:
Would be nice to get serial console with a nice little adaptor for low level kernel debugging.
If someone knows...
ROMs:
Same as usual... but maybe you could give some advice...
I'd like to try a stripped down stock ICS first... don't need all these visual effects but a stable system and using the HDMI would be nice as well.
Any suggestions here?
EDIT:
O.k. i'm little impatient... so i need to look for a light ROM myself
O.k. that might be it at the first sight. I guess i'll need to play around with the device a little bit, when it's functional again.
Thank's a lot for your patience and have fun!
scholbert

[Q] usb port replaced -> battery drain(slimport wakelock)

Hey everybody,
about 2 weeks ago I had to change the USB port on my nexus 4 because It wasn't charging. I went to a professional place and they replaced it. everything worked fine but I did notice a significant battery drain. poking around with several battery apps revealed that the culprit is "slimport wake lock". further digging around revealed that what probably happened is that during the replacement of the USB port, something now malfunctions with the slimport chip/connection and it stays constantly on.
I of course plan on taking the device to the laboratory and have the guy there take a look at it. unfortunately there's very little on the subject wherever i looked and I was wondering if any of you had something similar that can help me point the guy there. Also, I was wondering if there's any way to SHUT DOWN the slimport option (as I don't even use it) via the OS, developer options, some app or something else.
any help would be appreciated
SS of slimport wakelock being awake constantly is attached
karar2012 said:
Hey everybody,
about 2 weeks ago I had to change the USB port on my nexus 4 because It wasn't charging. I went to a professional place and they replaced it. everything worked fine but I did notice a significant battery drain. poking around with several battery apps revealed that the culprit is "slimport wake lock". further digging around revealed that what probably happened is that during the replacement of the USB port, something now malfunctions with the slimport chip/connection and it stays constantly on.
I of course plan on taking the device to the laboratory and have the guy there take a look at it. unfortunately there's very little on the subject wherever i looked and I was wondering if any of you had something similar that can help me point the guy there. Also, I was wondering if there's any way to SHUT DOWN the slimport option (as I don't even use it) via the OS, developer options, some app or something else.
any help would be appreciated
SS of slimport wakelock being awake constantly is attached
Click to expand...
Click to collapse
Did u manage to solve this issue mate?
Sent from my Nexus 4 using Tapatalk
slimport is to connect to an external display via usb like MHL cable, i read that the usb hardware can be the reason, the guy replaced the usb port again in the links below.
make a cwm backup, and flash android again install betterbatterystats and see if the wakelock continues if so you should replace the usb port.
theory, the slimport pin is touching another?
http://www.reddit.com/r/nexus4/comments/1vpw9h/slimport_wakelock_issue_poor_battery_life/
http://www.reddit.com/r/nexus4/comments/1vrlgu/slimport_nexus_4_any_ways_to_improve_it/
Part is copy/faulty, see if they'll change it for another for you.
USB port was changed again, also did:
-Factory Reset
-updated to 4.4.3(and yesterday - 4.4.4)
-Battery change
No dice. I gave up and bought myself a Moto G.
Though, if anyone comes across a solution - do tell.
Seems to me like broken USB port or pinout not compatible. Possibly they did short-circuit on one circuit on PCB. What I can advise is go back to people who changed USB port and ask them to re-solder everything by using compatible parts.
Kind regards,
I have the solution guys... Though its hard to explain, its not very hard to accomplish.
I took my n4 for another try in a different lab. The technician from the start suspected it's not something in the charging port itself, so he asked me to leave the phone for him for a few days.
After 4 days of trying and learning, he managed to find that the problem is in the socket on the board itself is causing the problems, along with the charging port, in my case.
He replaced the port on the board itself and the problem is solved.
Eventually, I paid 40€ for this problem, not very high, beats the other option (buying a new phone)
Try it guys.
---------- Post added at 06:15 PM ---------- Previous post was at 06:15 PM ----------
If anyone needs another explanation don't hesitate to contact via hangouts.
[email protected]

Crushed the back of my Nexus 4, looking for troubleshooting assistance

Hi,
I accidentally crushed my photo between a seat and a table on a train. (htp://imgur.com/Q1RUsEk) This is what it looks like after it was crushed.
Immediately after it was crushed, I noticed the phone network icon was empty. I turned off the phone and it has not been possible to boot back into the home screen since then.
I attached the phone to my computer and used ADB to get (htp://pastebin.com/H85Xq2U4) the last_kmsg, (htp://pastebin.com/NArZYWSZ) logcatouput, and (htp://pastebin.de/124812) bugreport output.
I'm not an expert at debugging problems with phone hardware but it looks like there is a problem with the audio subsystem in logcatoutput.
Are there any reasonable steps I can take in trying to resurrect my phone?
- votadini_
(Sorry for the "broken" links, I had to edit the addresses to make this post due to it being my first post.)
Bumping in the hope that this can receive some attention.
repair/replace
votadini_ said:
Bumping in the hope that this can receive some attention.
Click to expand...
Click to collapse
According to your log description it would seem that there is physical damage to the system board. The only option would be to do an inspection of the phone. This will require dis-assembly and that does need some skill, although there are several threads here on XDA that might help.
Determining the actual board damage would require some knowledge of electronics.
I would suggest that you look into replacing the unit. With the Nexus 4 you might be able to find a used unit on ebay or on the Swappa forum here on XDA.
Your sign-on doesn't indicate a location, so you may or may not be able to access/use these sites. At any rate you are looking at some pricey repairs, if such repairs are even possible.
good luck.

Need replacement USB component hardware.

My Zoom took a toilet bath last week. It has been taken apart and dried and I can trick it into turning on and booting into Android by plugging in the charger, but it turns off after a while. I have ordered a replacement battery.
When Android loads, I get a notification to change "reverse charging" from normal to quick. From this I think I can safely assume that I need to replace the usb component of the hardware. I can't find parts for this damn thing anywhere. Can anyone who might know help me out? My google-fu has failed me.
I cannot vouch for this site whatsoever, but a quick search brings me to this:
https://www.asus-accessories.com/modele/ZE553KL/dc-board-for-zenfone-3-zoom-65476-62885.htm
Which seems to be the board you're looking for based on the internal photos. To view the board go to the FCC filing and click the entry 'internal photos', and look at page 18
FCC filing.
Good luck.

Klyde KD-12116 USB not working

I purchased a KD-12116 unit from a guy who was the second owner. Neither owner had it for more than 3 weeks. Everything works on the unit except the USB ports. I have tested the cables and the +5v and GND are working but the data lines remain non-functional. The previous owner says they worked when he had the unit. So short of going through Paypal to get my money back I am trying to get USB on this unit working. It has the KD-ZXW-MB main board and is a PX6 64GB storage w/ 4GB ram. I have opened the top cover and see some headers that could possibly be USB but without a schematic it is hard to tell. Does anyone know of maybe a setting that could be turned off or have a schematic of this motherboard that I can find another USB header on?
Take a photo of what you have under the lid. We will compare with other models KD.
sun.valeo said:
Take a photo of what you have under the lid. We will compare with other models KD.
Click to expand...
Click to collapse
Attached.
I am hoping that C129 4-pin connector is a USB header and I can find a corresponding plug end easily for it.
kameleon25 said:
Attached.
Click to expand...
Click to collapse
https://forum.xda-developers.com/an...d-units/klyde-kd-1280-tesla-headunit-t3983095 - browse this thread for the information you need.
sun.valeo said:
https://forum.xda-developers.com/an...d-units/klyde-kd-1280-tesla-headunit-t3983095 - browse this thread for the information you need.
Click to expand...
Click to collapse
Thank you. I have been through that entire thread at least 3 times and did not see anything but this time I saw the last post on the first page had where someone soldered to C129 and it was USB. I will try to find a plug that matches it and see if I can get it working. Thank you!
kameleon25 said:
Thank you. I have been through that entire thread at least 3 times and did not see anything but this time I saw the last post on the first page had where someone soldered to C129 and it was USB. I will try to find a plug that matches it and see if I can get it working. Thank you!
Click to expand...
Click to collapse
I would recommend that you examine the microcircuit, there are two of them near your specified contact. One of these microcircuits is USB HUB 2.0, maybe the problem is in it. If you yourself do not have sufficient knowledge of checking the performance of microcircuits, then contact a specialist in the workshop. This will be more productive and will save you a lot of problems. Perhaps the microcircuit is OK, but there is a bad soldering of the contacts. And because of this, there is no normal USB operation.
sun.valeo said:
I would recommend that you examine the microcircuit, there are two of them near your specified contact. One of these microcircuits is USB HUB 2.0, maybe the problem is in it. If you yourself do not have sufficient knowledge of checking the performance of microcircuits, then contact a specialist in the workshop. This will be more productive and will save you a lot of problems. Perhaps the microcircuit is OK, but there is a bad soldering of the contacts. And because of this, there is no normal USB operation.
Click to expand...
Click to collapse
I am believing this is the issue. I made an adapter to plug in to the motherboard USB header and the same issue presents itself. USB gets power but no data. I am trying to contact KLYDE for warranty information.
kameleon25 said:
I am believing this is the issue. I made an adapter to plug in to the motherboard USB header and the same issue presents itself. USB gets power but no data. I am trying to contact KLYDE for warranty information.
Click to expand...
Click to collapse
I don't think you will be able to solve this problem under warranty. You did not purchase this device from Klyde. If I understood you correctly, you are already the third owner of this device. You will not be able to prove that you bought a radio tape recorder from Klyde, they will easily check it. And, they will not be responsible for the actions for the actions of the previous owners of the radio. And you have already opened the seal on the lid. You should look for a good specialist to understand your problem.

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