On 1/6/2016 7:19 AM, [email protected] wrote: > > Now, the main question is, can we make BeagleBone Black as an FM receiver > using only software without using any external FM module ?
Only software? No. I've worked on very minimal radios using just a couple of (FPGA) I/O pins and some discrete parts. Basically, you use a differential input of the FPGA as a comparator, build a delta-sigma ADC out of it, and directly sample the radio signal. This actually works OK for lower frequencies, but there's no way you can do this with just software and GPIO pins at ~100 MHz FM frequencies. You might be able to do something similar with the timer hardware on the BBB if you have an outboard down-converter. You might even be able to use another timer for the reference frequency output. But you're still going to need at least a handful of external discrete parts to do filtering/mixing. -- Charles Steinkuehler [email protected] -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
