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by notyou
Mon Feb 20, 2017 5:44 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

Hello scruss, i have tested with 3 different power adapters (1,5A, 2A and 2A), 3 cables, 2 different SD cards (SAmsung and Makespot) and reinstalled OS from scratch on both, 2 different model/age computers (desktop and laptop). And as soon as you get "good" RPi zero, everything works in any combina...
by notyou
Mon Feb 20, 2017 5:41 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

There isn't anything written to the SoC: it has no flash. All the storage is on SD card. If your statement is true, the SoC has no flash what generates the USB product string "BCM2708 Boot"? The code in the boot ROM inside the SoC. ROM != flash. It can't be updated without a new chip being built. O...
by notyou
Mon Feb 20, 2017 5:28 am
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

So I am getting a replacement, even the distributor agrees that the unit is defective. Bonus I appear to be able to keep the broken one (probably more trouble than its worth to return ship a $5 unit anyway). Here is my work around. Bust out the bus pirate (sparkfun v3 edition). Black wire to pin 6 (...
by notyou
Mon Feb 20, 2017 5:14 am
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

… I have not been able to locate anything saying that the main chip has any code that gets flashed to it at any point. With the open source nature of the project you would think that if it existed it would be published. So it is probably from Ti. There isn't anything written to the SoC: it has no f...
by notyou
Sun Feb 19, 2017 2:36 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

After further googling I did find some people with 1.3 hardware reporting the same thing you and I appear to have. It seems hit or miss. I was hoping that there was some and maybe the ability to roll back the code. I have not been able to locate anything saying that the main chip has any code that g...
by notyou
Sun Feb 19, 2017 3:57 am
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

There has to be some microcode somewhere on the usb control chip I just do not know if it is user updated or done by Ti at the factory or by RPi during assembly. With no SD card the chip will do the mode I want. I registers with my desktop and does the "BCM2708 Boot" device identifier. This code cou...
by notyou
Sun Feb 19, 2017 3:37 am
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

Okay, running out of suggestions here, but: you're connecting directly, not through a hub? you're not connecting to a USB 3 port on the Linux box, are you? They can behave a little differently. (I'm pretty sure you have, but) Have you tried a different micro USB cable between the Zero and the deskt...
by notyou
Sat Feb 18, 2017 11:59 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

Can you see that MAC address on your desktop Linux box? If so, you have the right kernel modules loaded on the Zero and the desktop. No. It fails long before the MAC addr will be transmitted - lsusb and dmesg do not show that anything was plugged into the USB port. Even if they had no idea what to ...
by notyou
Sat Feb 18, 2017 9:33 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

I tried an update which eliminated the enqueue error in dmesg but did not get it working.
sudo BRANCH=next rpi-update

I tried to use the libcomposite framework instead of g_ether (same function, newer method) and that had no effect.
by notyou
Sat Feb 18, 2017 3:40 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

One other thing I have tried that is not yet mentioned is to change config.txt to read dtoverlay=dwc2,dr_mode=peripheral in theory if its compiled in dual mode this will force it into peripheral mode, not OTG. This has no effect. Out of desperation I also tried host and otg both similarly failed.
by notyou
Sat Feb 18, 2017 3:23 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

It does not have an ipv4 just the "fake" ipv6 addr that it gets when it fails. It does have a random mac addr, and dmesg states clearly that it is generating a random one. Both mac and host are random. This does not appear to be the issue because it fails before an IP would be generated. It is not s...
by notyou
Sat Feb 18, 2017 3:04 am
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

I have tried several versions of Jessie and was unable to get it working. I have confirmed that USB pin 4 (OTG ID) is connected to ground, at least while the board is off. I have also noticed that in the corner between the HDMI and the SD card v1.3 does not connect 2 points that v1.2 does. This coul...
by notyou
Fri Feb 17, 2017 9:51 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

I am going to try older versions of Jessie to rule out a Jessie change.
Sir Arthur Conan Doyle wrote:Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.
by notyou
Fri Feb 17, 2017 9:10 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

Re: RPi Zero 1.3 USB g_ether not working

Let me preface this by being more clear. I want the g_ether USB gadget kernel module to work. It does not. Specifically I have a RPi Zero with v1.3 hardware. Every other mode works except the gadget mode which is well documented as working. Thus it is either a change in the current Jessie release or...
by notyou
Fri Feb 17, 2017 5:32 pm
Forum: Troubleshooting
Topic: RPi Zero 1.3 USB g_ether not working
Replies: 41
Views: 21614

RPi Zero 1.3 USB g_ether not working

Post edited to try to be more clear: Hardware RPi Zero hardware version 1.3 (with camera socket) from an official distributor (not a clone). What works * Booting with no SD card shows "BCM2708 Boot" on my desktop. For more info on this boot mode see https://www.raspberrypi.org/forums/viewtopic.php?p...

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