Search found 5 matches

by Tassie
Fri Feb 08, 2019 2:23 pm
Forum: GTT Series
Topic: gtt25_dataset_save() file format
Replies: 4
Views: 10012

Re: gtt25_dataset_save() file format

Thanks Daniel, There's another aspect to this case. It's not good practice to hammer on an SD card like this, even with wear leveling my three writes per second will reduce the useful life of the SD card to a short time, probably measured in weeks. I'm happy to be a Beta tester for any multi data ca...
by Tassie
Thu Feb 07, 2019 8:19 pm
Forum: GTT Series
Topic: gtt25_dataset_save() file format
Replies: 4
Views: 10012

Re: gtt25_dataset_save() file format

Thanks Daniel It might help if you had some hard numbers to qualify what I'm trying to do. The interface is RS-232, 115,200 baud. Here's the GTT38A display with 6 graphs, 72 points per graph: http://tasrv10.com/wp-content/uploads/2019/02/screen_engine1.png Updating 72 points across all 6 plots using...
by Tassie
Thu Feb 07, 2019 4:45 pm
Forum: GTT Series
Topic: GTT38A hard reset?
Replies: 2
Views: 8171

Re: GTT38A hard reset?

Thanks Daniel,

You might care to consider this for a future firmware release.

A command to enable BREAK recognition (default would be off, so operation as it is today).

If it has been enabled, a BREAK for a certain minimum time would cause a hard reset.

Regards,

Adrian
by Tassie
Wed Feb 06, 2019 11:02 pm
Forum: GTT Series
Topic: gtt25_dataset_save() file format
Replies: 4
Views: 10012

gtt25_dataset_save() file format

Hello, I have six GTT2.5 Chart objects which I can update fine using gtt25_dataset_push_data(). In order to update them more quickly over an RS232 link, I'm writing a file to the SD card using gtt25_filesystem_file_write(), then executing the file with gtt_run_script(). The file simply contains 80 p...
by Tassie
Wed Feb 06, 2019 8:07 pm
Forum: GTT Series
Topic: GTT38A hard reset?
Replies: 2
Views: 8171

GTT38A hard reset?

Hello, I have a GTT38A, which I'm able to use and communicate with fine. I have an application where the GTT38A is a few feet away from the hardware talking to it, via RS232. In the event of a communication loss, I need to be able to do a hard reset. I'd rather not have to do something to cycle the ...