Category Archives: OpenBLT

Blog articles related to the open source OpenBLT Bootloader.

Reading OpenBLT’s version number from your firmware

The goal of this blog article is to answer a support question that has been asked by several OpenBLT bootloader users: How can my own firmware read the version of the bootloader? The bootloader defines three macros that combined hold … Continue reading

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OpenBLT 1.7.0 release notes

OpenBLT version 1.7.0 was officially released yesterday, after another half year of development work. 37 tickets were processed, which resulted in 136 commits. Feel free to download the new version of the OpenBLT bootloader and give it a try. This … Continue reading

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Relationship between Feaser and OpenBLT

The company Feaser and the OpenBLT bootloader project are two separate entities with a co-dependence. The goal of this article is to zoom in on this relationship and to explain why this relationship results in both entities to thrive.

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Security options of the OpenBLT bootloader

As a consequence of the strong rise of smart and internet connected devices, there is an increased demand for embedded system security. As a result, more and more customers ask Feaser about the security options that are available, when the … Continue reading

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ROM footprint for different OpenBLT configurations

In a system that contains a bootloader such as the OpenBLT bootloader, there are essentially two software programs present in read-only memory (ROM): your own firmware and the bootloader. Even though a bootloader is typically only integrated towards the end … Continue reading

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Data exchange between OpenBLT and your firmware

Several OpenBLT bootloader users asked, if it is possible two exchange data between the bootloader and their firmware. Even though the bootloader and your firmware are two completely separate programs in flash memory, which never execute at the same time, … Continue reading

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LibOpenBLT Python bindings tutorial

This tutorial video contains a live Python coding session that demonstrates the creation of a custom firmware update tool in less than 30 minutes. To test the newly created firmware update tool, an ST Nucleo-F091RC board is used, but you … Continue reading

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OpenBLT 1.6.0 release notes

OpenBLT version 1.6.0 was officially released yesterday, after another half year of development work. 42 tickets were processed, which resulted in 140 commits. Feel free to download the new version of the OpenBLT bootloader and give it a try. This … Continue reading

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Firmware updates in a network with multiple nodes

Internally, the OpenBLT bootloader is based on the XCP communication protocol. XCP is a point-to-point protocol for establishing a connection between a host PC and a microcontroller. Now consider a system with multiple nodes, where each node consists of a … Continue reading

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Reducing the bootloader’s ROM footprint

The recommended way to get started with the OpenBLT bootloader is to first find a demo program, which is based on a microcontroller similar to the one in your system. Once you have gotten familiar with your selected demo bootloader, … Continue reading

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