Partition layout design for embedded devices to enable image-based updates
Software updates for embedded devices are typically deployed as full image updates. There are many design considerations take into account in the partition table layout to enable full image updates, includingDo configuration settings need to be preserved during updates? Does the device storage controller support wear leveling or should this be handled by the operating system? Will th... Read the article
Firmware over-the-air: package-based vs image-based updates
Here at Mender.io, we did a comprehensive survey with embedded developers and what they did with devices that required software updates over-the-air (OTA). Our findings included two very distinct approaches to handling updates, which we will go over in more detail in this blog post.
The results of our survey included the following:Read the article
Using build information from Yocto to deploy software updates (part 2)
In our previous post, we discussed the need to check compatibility for software and devices when designing a solution to deploy software updates. We also saw that this entails discovering the hardware device type and the supported device type by the software update.
In this post we will look at how Yocto and OpenEmbedded can be used to obtain this information for builds relying on them.Read the article
Using build information from Yocto to deploy software updates (part 1)
When designing an embedded or IoT product, the problem of deploying software updates to the devices in the field quickly becomes a problem. The main drivers for having the ability to deploy updates are to fix bugs, security issues and add new features after the devices have left manufacturing. Not having a way to update the software or firmware puts companies at significant risk and competitive disadvantage.
In this post, we will look at some of the basic device information that needs to be in place to enable software updates.Read the article
The case for over-the-air software updates and patching the Internet of Things
Embedded systems have existed since the Apollo space program - the Apollo Guidance Computer in the Lunar Module is regarded as the first embedded computer, enabling the historic mission to land mankind on the Moon. Decades later, we are now in the age where embedded devices are being connected. The first wave was connected mobile phones, which have fundamentally changed the way we interact. As t...Read the article