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Currently I have the firmware code for a device running on Raspberry Pi. I want to use a linux computer that I have to test the device out using a virtual machine like Virtual Box (To connect it to server for example).

So my question is, to what extent can raspberry pi's functions be emulated by a virtual machine, compared to bare metal? What are the things a RPI system running on bare metals can do, that a virtual machine-emulated RPI cannot do? Can the emulator do firmware code testing, and server testing, for example?

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    QEMU is known to work, but virtualbox does not support the PI. One limitation will be that you can not interact with the GPIO pins. – Steve Robillard Jun 29 '17 at 21:49
  • Okay, thanks! Can I run multiple instances of Raspberry Pi (so I can have multiple RPIs connecting to a server) with my computer? I will try QEMU. Thanks! – Yunfei Liang Jun 29 '17 at 22:35
  • I have not tried it but I don't see why not. – Steve Robillard Jun 29 '17 at 23:26

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