This morning I noticed my LiPo battery-powered Edison project had shut down, well before it would have normally run out of battery.
The battery is attached to J2. I attached power to J16, a serial terminal to J3, and watched the kernel boot. It complained about thermal throttling, and sure enough, the Edison module was burning hot to the touch. After a few seconds the system stopped responding.
I removed the battery and USB cables and let it cool off. Then I attached only the USB to J16 for power, and noticed that DS3 lit up, which should only happen when a battery is charging, right? The system no longer boots, only blinks DS1 and produces some kind of noise character on the FTDI port each time DS1 blinks.
So is the breakout board fried? Is there anything else I should try?
Update: it's not the breakout board, but the module itself that seems to be damaged. I tried swapping Edison modules and breakout boards and the problem follows the Edison. The original breakout board is fine with another Edison module on it.
On a Sparkfun base board, for example, the damaged Edison is in a loop with:
PSH KERNEL VERSION: b0182929
SCU IPC: 0x800000d0 0xfffce92c
PSH miaHOB version: TNG.B0.VVBD.0000000c
microkernel built 10:14:01 Jan 13 2015
******* PSH loader *******
PCM page cache size = 192 KB
Cache Constraint = 0 Pages
Arming IPC driver ..
Adding page store pool ..
PagestoreAddr(IMR Start Address) = 0x04899000
pageStoreSize(IMR Size) = 0x00080000
*** Ready to receive application ***
We're sorry to hear that and we'll try to give our best to help you with that.
As you mentioned the DS3 will turn on when charging an attached battery; is strange that it turned on when you connected the USB to J16 without any battery attached to J2.
Additionally, we would like to know a little bit more information about how you connected the LiPo battery, I mean, regarding the polarity. Also, could you share with us the LiPo battery specifications?
We'll be waiting for you reply.
The LiPo battery was attached to J2, with correct polarity since it was running fine until this happened. The battery is a 1200mAH 3.7V cell, manufactured on 2015-05-05.
Have you verified the LED behavior? Because that's what happens on both mini-breakout boards that I have (DS3 illuminates as soon as power is supplied over USB to J16, regardless of whether there is a battery attached).
We have already verified the LED behavior with two Edison breakout boards without a battery attached, when we powered the breakout board through J16, the DS1 first blinked one time and then it remained on permanently and DS3 is always on since we powered the board.
We would like to ask you the following:
Is the Edison getting hot when you powered the board (through J16)?
Could you please try to re-flash the Edison?
Let us know if you were able to re-flash the Edison.
This seems to be a warranty issue. Could you please go ahead and open a new ticket following this link https://customercare.intel.com/?lang=en-US https://customercare.intel.com/?lang=en-US? We'll a take a better look at your issue and determine how to proceed. Also, you can mention this thread /thread/106156 https://communities.intel.com/thread/106156, in the ticket.