Other Parts Discussed in Thread: IWR6843
Tool/software: Code Composer Studio
Hello, I have a few inquiries about the IWR6843ISK Vitalsigns lab.
Q1. Restarting mmwave didn't work, so I fixed the code.
I added one line like the picture.
Is there any problem with this?
Q2. Why is freqSlopeConst multiplied by 48 when calculating chirpBandwidth_kHz?
Is it because 1LSB is 48.279kHz/uS like the picture?
If correct, IWR6843 is 60~64GHz. Why multiply 48 instead of 36?
Q3. I set freqSlopeConst to 65, why does it change to 1795 when I check the code?
I want to know what formula it turns into.
Q4. The Developers Guide says that the heart wave is filtered at 0.8~2Hz.
Why is the code's IIR filter up to 4Hz?
How do I filter the IIR filter down to 2Hz?
Q5. Why is the formula for obtaining the rangeBinSizemeter of the GUI and firmware different?
The results are also different from each other, 0.036 and 0.027.
Best regards.
CH Cho.
