#TeamTrees

With Nathan, we work a lot on the creation of the Linux distribution. On my side, I am working on how to add an sd card on an SPI bus and Nathan is working on the driver for the USB WiFi Dongle.

Device tree

An SD card can not be detected and set automatically like a USB device. We have to tell Linux there is a micro SD host on an SPI bus. We have to put a micro SD host on an SPI bus because the eMMC bus is already taken by the Flash. To tell Linux, there is a micro SD host on the SPI bus, the simplest method is to add it in the device tree blob.… Read more

Alea Yocto est

We need to build the disk image for the MCV SoM. To do this we have two options given by Aries, the SoM manufacturer. We can use Buildroot or Yocto.

Yocto

We decided to test Yocto first. Tarik Graba advised us to use it and a previous group who works with the same SoM used it too.

This project is a cross-compilation framework based on recipes. Every recipe contains a list of dependencies and a set of instructions (like a real recipe). The interesting point is the sources needed in a recipe can be directly downloaded online. So if some dependencies are missing, they will be automatically downloaded.… Read more