This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: MSP430FR5994
You mention the ability to batch PIR processing on the LEA in the following blog post. https://e2e.ti.com/blogs_/b/industrial_strength/archive/2017/08/17/designing-with-pir-motion-detectors-part-1?tisearch=e2e-sitesearch&keymatch=fire%20detection
Can you give me an idea of if and how this can be done using the LEA of the MSP430FR5994?
Thank you for your question.
The main idea behind this blog and especially the reference design TIDA-01069 is to use the continuous wavelet transform (CWT) on the received signals through the PIR sensors in order to have a specific signature for different kind of motion.
In the reference design TIDA-01069, the CWT has been done through matlab.
But if you want to implement the CWT in a MCU, you should do the computation for the CWT in the frequency domain.
The wavelet transform it's basically many convolution product between the signal and the wavelet.
But if you do same operation in the frequency domain it will be more efficent in term of computation capabilities, since convolution in time domain it's just a multiplication in a frequency domain.
As you mentionned the MSP430FR5994 has a LEA and will help you to accelerate the signal processing and the FFT...
In this reference design is shown how to use the LEA and implement the FFT with MSP430FR5994.
There is also a GUI which comes with the reference design TIDA-01069 and display in real time the data and the CWT.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to BMA:
In reply to Dennis Lehman:
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.