This will configure QEMU to expose a tmp105 temperature sensor on the i2c-0 bus on x86_64. The temterature sensor can have its temperature set from the host OS, and the temperature can be read from the Linux client OS using the lm75 kernel module.
For convenience, we will be emulating an x86 system. The x86 configuations which QEMU ships with do not contain the tmp105 sensor we will be using, so first we need to enable it.
Assuming you have the qemu sources in the qemu directory:
# cd qemu
The Linux kernel is written in C, so you should have at least a basic understanding of C before diving into kernel work. You don't need expert level C knowledge, since you can always pick some things up underway, but it certainly helps to know the language and to have written some userspace C programs already.
It will also help to be a Linux user. If you have never used Linux before, it's probably a good idea to download a distro and get comfortable with it before you start doing kernel work.
Lastly, knowing git is not actually required, but can really help you (since you can dig through changelogs and search for information you'll need). At a minimum you should probably be able to clone the git repository to a local directory.
The instructions are based on this answers.ros.org thread.
You may need the latest pip, follow the official instructions.
Install bloom:
| #!/bin/bash | |
| MEM=1024 | |
| LAN=eth0 | |
| BRIDGE=virtbr | |
| ARCH=x86_64 # i386 | |
| #BIOS="-bios OVMF.fd" # to emulate an UEFI netboot | |
| # supported wifi interfaces can be bridged if you set 4addr mode first: | |
| # iw dev $LAN set 4addr on |
