Recent Posts

1

iMX233 / Olinuxino get stuck after changing crystal caps

« Last post by Sharagim on Today at 07:39:55 PM »

Hi,
After I de-solderer crystal caps and solder new ones my board get stuck as below, is there any known issue for this? I changed the CPU and crystal but not solved also tried pre caps!

Code: [Select]

HTLCSPL: Serial Console Initialised
SPL: Initialising Power Block
SPL: Switching CPU clock to 24MHz XTAL
SPL: Setting auto-restart bit
SPL: Setting VDDD 25mV below DC-DC converters
SPL: Setting VDDA 25mV below DC-DC converters
SPL: Setting VDDIO 25mV below DC-DC converters
SPL: Starting 5V input detection comparator
SPL: Starting battery voltage measurement logic
SPL: Initialisating LRADC
SPL: Enabling LRADC battery measurement
SPL: LRADC channel 7 is present - configuring
SPL: LRADC channel 7 configuration complete
SPL: Configuring power source
SPL: Using default DC-DC clocksource
SPL: Pre-Configuring power block

2

A20 / Re: Random shutdown of Olimex Lime 2 emmc rev.K.

« Last post by LubOlimex on September 13, 2019, 01:46:15 PM »

> I am using the Armbian_Ubuntu_bionic_5.1.12 OS with Lime 2 rev.K.

I believe it might be a corrupted image or failed apt upgrade. Can you try with the newest image that we recommend, it is available for download from here:

ftp://staging.olimex.com/Allwinner_Images/A20-OLinuXino/1.latest_mainline_images/bionic/images/

3

PIC / Re: canbus on PIC32-EMZ64

« Last post by KeesZagers on September 13, 2019, 01:14:18 PM »

Two earlier discussions have been started by me in the past:

https://www.olimex.com/forum/index.php?topic=5144.0

and

https://www.olimex.com/forum/index.php?topic=5505.0

In fact I got some CAN initialisation up and running. As the CAN module in the MZ controllers is the same as in the MX controllers, communication should not be a big issue further on. For me however this module did not make any sense because it had no real further I/O available. So I still use the Duinomite and PIC32-T795 modules. My advise to you: forget Harmony and try to read and write directly into the CAN registers.

4

A20 / Re: Random shutdown of Olimex Lime 2 emmc rev.K.

« Last post by tejas.s on September 13, 2019, 10:25:32 AM »

Hi LubOlimex,

I found the reason for shut-down, its because of xfce power manager.

Hardware setup :: Olimex Lime 2 Rev.k + 7" LCD + 5V power supply through the power jack. No battery is connected to the lime 2 board.


when the board boots up, the xfce power manager shows that the Battery is connected and it's in charging mode. The current charge value of the battery changes randomly like 92%, 56% and etc. When it reaches 0% the board will shut down. It completes the shut down procedure.

The following is the terminal output, to find the battery status. Even though the battery is not connected you can observe that it returns the Voltage and reports that the battery is present.

Code: [Select]

root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/voltage_now
2865000
root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/present
1
root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/online
1
root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/capacity
0
root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/capacity
0
root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/online
1
root@olinuxino:~# cat /sys/class/power_supply/axp20x-battery/voltage_now
2879000
root@olinuxino:~# [  OK  ] Stopped Unattended Upgrades Shutdown.
[  OK  ] Stopped target Timers.
[  OK  ] Stopped target Sound Card.
.....
.....
.....
The board shut down as soon as the capacity reached 0%.

I have three Lime 2 Rev.K boards, the behaviour is seen in all.

What could be the reason for this behavior?
Should I disable xfce power manager?


Note : I am using the Armbian_Ubuntu_bionic_5.1.12 OS with Lime 2 rev.K.

5

ESP32 / Re: need help with my esp32-poe-iso

« Last post by RobLatour on September 13, 2019, 02:10:12 AM »

the 1k ohm resistor is working great!  Thanks again for your help.  Rob

6

A20 / Re: Problem LCD 10' & A20-SOM204-EVB

« Last post by Arn on September 12, 2019, 11:54:32 AM »

Ok, perfect
All works fine now.

7

ESP32 / Re: need help with my esp32-poe-iso

« Last post by RobLatour on September 12, 2019, 01:44:12 AM »

Thank you, I will try 1k and report back.

8

PIC / Re: canbus on PIC32-EMZ64

« Last post by vicoET on September 11, 2019, 08:16:36 PM »

hello i see the example "echo_send" and tried to make it compile with EMZ64 configuration. But it seems it gets stuck after a few.
There are many threads on it on Microchip forums but information are often confused.
Too bad that Olimex didn't provide any example or application on CAN.

Any further help would be appreciated.

thank you

9

A20 / Re: Random shutdown of Olimex Lime 2 emmc rev.K.

« Last post by tejas.s on September 11, 2019, 03:14:01 PM »

Hi LubOlimex,

> Do you use the power jack to power the board? Or do you use the mini USB connector?

  I use the Power Jack, 5V power supply. Tried different power-banks and powersupply adapters.

> As if you ran "shutdown now" command?
  Yes, I have verified it with checking the UART0 debug port. It goes through the shutdown procedure.

> How often does it happen?
It's very random. So, I wanted to know if I can check a log file for the shutdown entry and conclude if it's a faulty board or some other reason.

10

A20 / Re: Random shutdown of Olimex Lime 2 emmc rev.K.

« Last post by LubOlimex on September 11, 2019, 03:03:00 PM »

Do you use the power jack to power the board? Or do you use the mini USB connector?

>  The board undergoes a complete shut down procedure.

As if you ran "shutdown now" command? Strange.

How often does it happen?