Image 2015-07-19

Graham

unread,

Jul 23, 2015, 12:19:03 PM7/23/15

to BeagleBoard

It took 30 hours, but I have my first autonomous reset on:

bone-debian-8.1-console-armhf-2015-07-19-2gb.img

BeagleBoard.org Debian Image 2015-07-19
Linux beaglebone 4.1.2-ti-r4 #1 SMP PREEMPT Thu Jul 16 20:48:37 UTC 2015 armv7l GNU/Linux
Input power +5V barrel jack.

So, this release did not fix it.

I will let it run until next release comes out, or if you want something else tested.

--- Graham

==

Graham

unread,

Jul 26, 2015, 1:24:43 PM7/26/15

to BeagleBoard, gra...@flex-radio.com

================================================
BBB1: HWaddr 1C:BA:8C:D9:5E:DD
Power: Adafruit 2A supply on Barrel +5V Port.
loaded "bone-debian-8.1-console-armhf-2015-07-19-2gb.img"

BeagleBoard.org Debian Image 2015-07-19
Linux beaglebone 4.1.2-ti-r4 #1 SMP PREEMPT Thu Jul 16 20:48:37 UTC 2015 armv7l GNU/Linux

Jul 22 00:43:54     Initial Boot (Unmodified/not updated)

Jul 23 07:06:14     Autonomous Reboot

Jul 24 13:23:02     Autonomous Reboot
Jul 24 19:56:24     Autonomous Reboot
Jul 24 21:34:38     Autonomous Reboot

Jul 25 19:39:58     Autonomous Reboot

Jul 26 15:09:57     Autonomous Reboot

Jul 26 17:12:13     Test Terminated

================================================
Meanwhile BBB2: HWaddr D0:39:72:19:72:3F
Power: Bench Supply on Barrel +5V Port.
Running: "bone-debian-8.1-console-armhf-2015-06-15-2gb.img"
BeagleBoard.org Debian Image 2015-06-15
Linux BBB2 3.14.43-ti-r67 #1 SMP PREEMPT Thu Jun 4 20:37:18 UTC 2015 armv7l GNU/Linux

which also reports to have usb-otg enabled, did not misbehave once in the same period.

==

Is there some newer kernel version that you would like me to test, or some other test you would
like to see me run?

--- Graham

==

dl4mea

unread,

Jul 27, 2015, 12:27:52 PM7/27/15

to BeagleBoard, gra...@flex-radio.com

I meanwhile tried if a 1k resistor from Vbat-Sense to ground helps: No, does not.

Summarizing my feeling: Feeding +5V to the back side USB helps a little, 1k resistor over Vbat-Sense does not help.

---- Günter (dl4mea)

Dennis Cote

unread,

Jul 28, 2015, 6:47:55 PM7/28/15

to BeagleBoard, gra...@flex-radio.com, dl4...@yahoo.de

On Monday, July 27, 2015 at 10:27:52 AM UTC-6, dl4mea wrote:

I meanwhile tried if a 1k resistor from Vbat-Sense to ground helps: No, does not.

Summarizing my feeling: Feeding +5V to the back side USB helps a little, 1k resistor over Vbat-Sense does not help.

You might want to try connecting TP5 (BAT) to TP6 (BAT_SENSE). You can use a resistor if you want, but BAT_SENSE is a high impedance input.

These terminals would normally be connected to each other at the battery. On the BBB they are not connected to anything. The PMIC sends test currents out the BAT pin and measures the resulting voltages on the BAT_SENSE pin. These functions can't work if they are not connected. The measured voltage on BAT_SENSE may drift depending upon the leakage currents at the floating input.

Dennis Cote

Graham Haddock

unread,

Jul 28, 2015, 9:49:07 PM7/28/15

to Dennis Cote, BeagleBoard, dl4...@yahoo.de

Agreed. But at the same time, the same hardware, right or wrong, works fine under 3.14 and prior. So there has been some software change since 3.14 in the way that the hardware is managed.

--- Graham

==

Reply all

Reply to author

Forward