<![CDATA[OpenIMU300ZA output freezes after 1 minute (approx) when using PPS]]>Is the PPS signal supported in the firmware as per the documentation?

Output consistently freezes after 1 min when using the INS example App with PPS from the GNSS connected to pin 2.

Many thanks,

Simon

]]>https://forum.aceinna.com//topic/87/openimu300za-output-freezes-after-1-minute-approx-when-using-ppsRSS for NodeFri, 15 May 2026 05:35:35 GMTTue, 17 Sep 2019 16:36:00 GMT60<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Tue, 17 Sep 2019 16:36:00 GMT]]>Is the PPS signal supported in the firmware as per the documentation?

Output consistently freezes after 1 min when using the INS example App with PPS from the GNSS connected to pin 2.

Many thanks,

Simon

]]>https://forum.aceinna.com//post/336https://forum.aceinna.com//post/336Tue, 17 Sep 2019 16:36:00 GMT<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Thu, 19 Sep 2019 01:04:36 GMT]]>Hi Simon,
The PPS function will be ready in next firmware release.

]]>https://forum.aceinna.com//post/340https://forum.aceinna.com//post/340Thu, 19 Sep 2019 01:04:36 GMT<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Thu, 19 Sep 2019 14:05:14 GMT]]>@Li-YiFan thanks for your response.

Do you have a rough estimate of when the next firmware will be released?

Alternatively can you point to to the relevant code in the Beta on github so that I can investigate?

Regards,

Simon

]]>https://forum.aceinna.com//post/348https://forum.aceinna.com//post/348Thu, 19 Sep 2019 14:05:14 GMT<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Thu, 17 Oct 2019 10:31:53 GMT]]>@Li-YiFan Any update on the firmware release?

]]>https://forum.aceinna.com//post/368https://forum.aceinna.com//post/368Thu, 17 Oct 2019 10:31:53 GMT<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Fri, 18 Oct 2019 02:52:42 GMT]]>@simon-rob Hi Simon, the PPS function not support in the old firmware OpenIMU, cuttently we have beta version with PPS on testing, the official firmware/doc will be released in the next few weeks.

]]>https://forum.aceinna.com//post/369https://forum.aceinna.com//post/369Fri, 18 Oct 2019 02:52:42 GMT<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Sun, 17 Nov 2019 19:45:34 GMT]]>@Li-YiFan Quite some time has passed now.. any updates on the next release?

]]>https://forum.aceinna.com//post/412https://forum.aceinna.com//post/412Sun, 17 Nov 2019 19:45:34 GMT<![CDATA[Reply to OpenIMU300ZA output freezes after 1 minute (approx) when using PPS on Wed, 20 Nov 2019 08:28:44 GMT]]>@simon-rob Hi simon,
sorry for the late msg, we have the beta version with pps function.
In the beta version test, the time lag between PPS and IO2/DRDY(the pin in OpenIMU develop board) signals can be arbitrary between 0 and 5 ms but it should be stable after 20s or so. The open source code will be published on VS code aceinna extension.
You could test the bin file with the step as following, and please add your comments.

  1. Connect Ublox GPS receiver to the unit and provide proper default settings for protocol and baudrate.
  2. Connect 1PPS signal from Ublox GPS receiver to the unit.
  3. Connect probes from scope to 1PPS and IO2 pin. Sync from 1PPS signal
  4. Start application capture debug output

OpenIMU300ZI_IMU_1_1_1_beta.zip

]]>https://forum.aceinna.com//post/434https://forum.aceinna.com//post/434Wed, 20 Nov 2019 08:28:44 GMT