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Guition ESP32-S3-4848S040 Display wakes-up randomly #706
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hmm it does not depend on discovery... I get this, if the display are wakeing up.
Possible that some problem with touch panel? |
Strange thing... it only happen, if i power it my display via 230V... if i use USB type C port, the problem not happen more than one hour... |
I have that screen running on 240V and do not see this problem, how often does it wake up ? |
I did more test and seems maybe not the 230V the problem... sometimes happen about 5-10 min, sometimes not happen hours... I dont understand... Seems happen more time, if for example the sun is shine directly to the screen... but it only just a idea... |
This doesn't really sound like a bug to me. |
Hello sorry the late answer. Here:
Other one. I not see any special
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Well it doesn't look like anything is waking it via command, so it may just be a faulty screen / local interference ? I haven't seen this issue with my screen. |
This all sounds to me like electromagnetic interference on the device/microcontroller. Make sure all the needed signals have an appropriate pull-up/pull-down resistor. Fixing an issue that only occurs randomly is nearly impossible without knowing the root cause... |
Is this problem resolved now? |
not solved, unfortunately... |
This sounds more like a hardware issue than a bug. e.g. the screen is registering a touch when there is none. |
More troubleshooting is needed to determine the root-cause.
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- Does it happen when you detach the screen from the PSU? Power it with a stable 5V power-supply and see what happens.
- Does this also happen with other firmware?
- Do you have multiple screens? Do they all have the same symptoms?
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Thanks for your feedback. It really sounds like a hardware issue to me. Like stated before, without a way to replicate the random problem, it will be very hard to fix it. |
It might be that the touch driver chip is reacting to electrical noise and generating an interrupt. Been digging in to the GT911 programming notes, and I see a couple of config registers that can be set to filter out noise (and adjust the touch sensitivity). There are a couple of functions within the Arduino Goodix driver for the GT911 that read the config registers. Whilst there is a function call to set the resolution, there isn't one to adjust sensitivity. |
The goodix repo is a fork which already has some openHASP tweaks. Then, openHASP can simple call that function when initializing the driver. |
If you do this I glad to test it! |
Hacked a few lines of code to read the config registers inside the GT911 chip. In the process, learned a little... My trivial little hack causes openHASP to crash & burn with a panic. Not had time to work out why. In the meantime, I do have a standalone utility that could be used to tweak the relevant register in the GT911 chip. |
OK so it seems that my screen has developed this problem now ;-( |
Tried adding a short bit of code to openHASP to modify the relevant register in the GT911 chip during setup. Unfortunately, this addition triggered a panic and infinite reboots. As life is short, and using the JTAG interface to debug is impossible, I've put together a standalone "project" - https://github.com/FreeBear-nc/HA-openHASP/tree/main/GT911 To adjust the noise sensitivity, edit the NR_LEVEL flag in the platformio.ini and recompile/upload - I would suggest 6 or 7 to start with. |
Does this register fix the ghost touches? |
I can not able to test it... |
3A is enough right? |
Depends on how big the load is you are switching. If you are switching LED lamps, 3A will be fine. |
I put before the display that we are talking about. Not to clear to me, that need to install it that i protect the noise, or that cause the noise... |
@username-AL @TNTLarsn @vampywiz17 @FreeBear-nc It might be useful to collect some more information.
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@fvanroie I put message on discourse link back to here, not sure if you can do anything to pin / highlight it so its more visible. |
I think so too
I've never had unexpected events that switches any buttons etc. on the screen. Overall the "events" were noticeably reduced with the new firmware. |
How many screens do you have? If only 2 are affected, could you try to swap a good PSU with a bad PSU and see if the problem moves too? That way you can be sure the issue is in the PSU part and not the display part. This might be a long shot, but what's that mains frequency? Probably it is 50Hz. The backlight is set to 100Hz, so maybe there is some interference... try setting the |
Judging by feedback garnered here, the patch does help to reduce the number of phantom events. Uploaded a new firmware build with a 110Hz backlight frequency. |
I have two on my desk powered by same mains socket. I and others have had ghost events even with the USB power, but it seems less of an issue, indeed if I swap the problem screen back to USB the issues seems to stop with a higher setting 7+ I never noticed this issue when I first got the screen and was using it for development, so perhaps something is failing over time ? |
Just picked up the main power board for the plate I'm using for test & development... One of the capacitors on the switch mode PSU module is rattling around loose. Going to have to remove the module somehow and solder that capacitor down. |
I power cycled the bad screen a hour ago and no events yet. Before it was averaging 4-5 an hour. |
I try 110Hz firmware, but the problem are also happen. |
For info after power cycle at 00:00 I have only had 2 false events so far - 07/09/24 05:50:57 LCD:1 btn:p1b51 Where yesterday, before power cycle I got all these - 06/09/24 15:39:51 LCD:1 btn:p0b21 Still no events from the new screen on stock firmware. |
Did you find a problem with the PSU ? |
Yes. One of the electrolytic capacitors finally fell off the PSU module - A pain in the b... to solder back in place as there is a relay in the way. Getting the module off the main PCB wasn't easy. I did note that it is possible to remove R5 & R6 (both zero ohm links) and insert a suitable small common mode inductor in the space labeled L4. Something like this: https://www.aliexpress.com/item/1005006624953914.html |
Update, I swapped over the PSUs between my two screens, and neither screen caused any ghost touches. |
@FreeBear-nc |
Found the 330uF capacitor fell out when poked (bad solder joint). But this particular board sits on the bench powered by USB when (if) I'm testing code. |
No issues in the last 7 days since changing the 330uF capacitor ..... |
Starting to sound like a power supply problem. If you haven't already tried it, drop noise reduction back down to 5 and see if you get any more phantom touch events. |
I only had your fix on one unit, which I did set to 5 the other has stock firmware. Sounds like a batch issue perhaps ? |
You able to make a pic what capacitor are replace it? |
Some interesting remarks regarding to the power-supply and upgrades can be found here: |
@fvanroie Interesting read and a useful site in general. |
I took it apart my device and not only C1 and R4 but L4 is also missing.... (a toroidal transformer maybe...) |
Somebody able to measure the L4 part? i would like to build it, but it would be good the details. |
One of my boards has L4, the other doesn't. Don't have an inductance meter so can't measure the value. None of my boards have C1 or R4 fitted... |
@vampywiz17 Did you swap the 330uf capacitor, that fixed my issues ? |
Perform all steps below and tick them with [x]
Describe the bug
To Reproduce
Install latest beta firmware 7.0 rc11 (Guition ESP32-S3-4848S040)
Expected behavior
The display can not wake up
Screenshots or video
Get this code on console, when the display are wake up:
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