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kamalmostafa / minimodem

general-purpose software audio FSK modem
http://www.whence.com/minimodem
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minimodem with Raspberry Pi #18

Closed MoaidHathot closed 3 years ago

MoaidHathot commented 8 years ago

First of all, minimodem is awesome!

Though, I'm failing to make the Raspberry pi the receiving end. It just doesn't receive any data (I even don't see the on-screen logs). I'm using a Raspberry Pi 2 with a Cirrus Logic Audio Card. Did somebody tried it out?

nkeck720 commented 6 years ago

Does the sound card show up properly as a recording device with pulseaudio? If not, then minimodem isn't going to see the card or any sound coming from it. Also note that on some pi 2 models that only have one 3.5mm jack, that jack is going to be A/V output only, with no input capabilities. AFAIK, the only way to get audio into these is to use a USB audio input, which I'm sure you can find for cheap on ebay and the like. I have a RPi model 2B+, but since I don't have an input on it, I can't test anything for you (yet).

Hope this helps.

yodakohl commented 6 years ago

Yes I tried it. See my video

CyberCityCircuits commented 6 years ago

You don't have to use Pulse Audio. You can use ALSA if you use the -Ax tag where x is the card designator in 'aplay-l'.