ScaleView | ArcScaleView , ScaleView , 刻度尺选择器，包括弧形刻度尺选择器和直尺形刻度尺选择器 | Android library

I am a newb armed with copy paste trying to get data from an old Avery-Weightronix 7820 weigh scale. I have it hooked up via an RJ-232 cable and have managed to get responses from the scale. I followed this tutorial https://www.studentcompanion.co.za/creating-a-serial-port-interface-with-c/ to get up and running.

Once I got it working I wanted to simplify it and essentially use my computer as a remote display. I hard coded the serial connection parameters and set up the code to send a request for the weight every second so I could display it in a winform.

Later I plan to extend it so I can get the total weight for multiple items. I plan to weigh an item, copy the weight to a running total, put a new item on the scale and repeat.

I am stuck at the moment because I am having trouble consistently parsing the data returned from the scale and because the loop locks up the UI.

When I send W which is the request for the current weight, an example response is:

0001.10lb 00

Where = End of text character (Ø3 hex), = Line feed character (ØA hex), = Carriage return character (ØD hex).

The response from the scale is fixed length but when I go into debug mode the response is not received during the first couple of cycles through the code. Then it arrives later. This is ok when I am outputting it to a rich text field but when I try to pull out a substring I get an error if there is no data.

Also, the UI locks and the only thing I can do it stop the execution. From reading around it seems I should implement threading but I am unsure how to reorganize my code to do this.

I would appreciate any pointers or advice on how to solve these issues.

This is the code I have:

I have a program with a chart and a Dictionary with my values. I add the Points to the Series by cycling the keys of the Dictionary with a foreach loop. Now my problem is I want to zoom into the chart, which I already accomplished but when the points are loaded the position of the scrollbar is on the date 01.01.1900 and when I click the scrollbar it jumps to the actual first date, which is 28.03.2020. How can I fix it so the scrollbar is already on this date?

I already tried to set the scaleview position to the minimum of my chartarea but that didn't work.