In the "4.1Overview of Options" of the "Xtensa Instruction Set Architecture (ISA) Reference Manual" (http://0x04.net/~mwk/doc/xtensa.pdf) are listed some options that support DSP. Would you please consider adding the following (if not already included):
1. 32-bit Integer Multiply Option
2. 32-bit Integer Divide Option
3. MAC16 Option
Being able to do some DSP on sensor data before it is sent will open up options of acting locally, customizing the processing for each location or sensor, as well as reducing bandwidth requirements. This would enable systems to be better able to be scaled up. That is, as the system grows so does its processing ability. The upstream load, as the system is scaled up, is less dependent on system size enabling a more flexible system.
If these options could be added while maintaining the low cost of your product, I believe this would increase your products appeal.
An open source c++ library for it was already have been released, so it is a matter of integrate it with Espressif SDK ...
Thans and Regards
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