Other Parts Discussed in Thread: IWR6843
Hello all
I am working on a project in which I wish to hardware trigger an IWR6843ISK-ODS which is connected to a DCA1000. I believe I am almost to where I need to be but I am running into issues.
What I Have Done:
1) As specified in this post https://e2e.ti.com/support/sensors/f/sensors-forum/972613/iwr6843isk-hardware-trigger I have removed Resistor R346 and placed a resistor across R348.
2) I have connect pin 9 of J5 to an arduino digital pin and also connect the arduino ground to the ground of j5.
3) I went into mmWave studio and configured everything as usual. Once I got to frame config I selected "hardware trigger" instead of "software trigger". I then select "DCA ARM" and "Trigger Frame". Note that as shown in the screenshot below I configure 4 frames
What Happens
1) After hitting trigger frame in mmWave studio in the Lua output (starting at 12:13:58) I see the ar1.StartFrame() which passes. I then see that the record is started.
2) I have my arduino configured so that I trigger is set whenever I press a button. Based on the answer from this post https://e2e.ti.com/support/sensors/f/sensors-forum/751817/dca1000evm-automated-frame-triggering I expect that I will need to press the trigger button 4 times before the recording finishes. But what happens is after I press the trigger once all 4 frames are taken and at 12:14:03 I get the "Record Is Completed" response. The "frame End async event received!" is not issued though until I press the Arduino trigger button 3 more times.
Can anyone explain to me why all 4 frames are taken at the same time and how I can fix/work around this?
Thank You,
Cole