Using the Stitch Bootloader, the current project aims to update a board through CANbus. The workflow: The first board has a firmware loaded into the SD Card. At the beginning it requests to transmit the firmware through CANbus. If the second board accepts the request, then the firmware is transmitted through the CANBus to the SD Card of the client. After the completion of the firmware transfer process, the system reboots itself and Stitch Bootloader flashes…

Usually a firmware upgrade of the STM32FXXX boards are is not an easy task for customers. They have to plug the board and use several different tools to flash the memory. For that reason i have made a simple, effective and easy way to upgrade your firmware using an SD Card. The upgrade task is simple, just write your firmware in the first sector of the SD Card, reboot your system, and the bootloader will…

Occasionally we might come across a problem which lends itself well to the idea of C# code being compiled at runtime. The .NET Framework includes a mechanism called the Code Document Object Model (CodeDOM) that enables developers of programs that emit source code to generate source code in multiple programming languages at run time, based on a single model that represents the code to render. We can use the CSharpCodeProvider to do exactly this, it can compile…

In the last three decades, the field of robotics knows great flourish and acceptance, both at research level and application in everyday life.  Nowadays, the rapid evolution appears from the applications and the deployment of almost all over the world and from the research results. Countries such as Japan, US and Western and Eastern European countries, which have made significant progress to research and to technology, constitute the basic core of support and development of…

Sometimes, we need an easy way to test and verify that our board works correctly, especially if we are using breadboards and cables. The following simple FreeRTOS thread is able to echo each incoming CAN frame. To use this thread you must enable FreeRTOS using the ST’s CubeMX software which will generate the appropriate startup source code and afterwards you have to include some extra libraries that can be found in the blog (please check…

In a previous post we saw a simple CAN library to handle the CAN interfaces of STM32 board. However one basic issue that we had to solve is the frames buffering (especially when we receive the frames). This issue came up by the processing time that each frame needs and the limitation that the receive interrupt routine should be as fast as possible. For that reason, the following source code presents an incoming CAN Frames…

Dynamic resources allocation has become even more attractive as a research direction with commodity computing gaining momentum and bringing new requirements regarding elasticity and flexibility and with the growing importance of cloud computing.  The aim is to deliver high-performance computational while leveraging on other aspects, such as energy consumption. Admittedly, heterogeneity comes at the cost of greater design and management complexity. A promising approach to address the difficulties posed by this scenario is to exploit…

The Controller Area Network (CAN, also known as CAN Bus) is a vehicle bus standard designed to allow electronic control units and devices to communicate with each other in applications without a host computer. STM32F779-Eval board has 3 CAN interfaces, however only the two of them have their own clock (master). For that reason the following library provides some C methods to activate and use those CAN interfaces. Beware that each CAN interface requires its…

I have recently been playing with UART and DMA, although i’m still getting my head around it,. DMA allows you to transfer large amounts of data through the system without getting the processor core involved. Rather than the CPU laboriously reading a byte, the writing a byte from one buffer to another, you’d give the DMA controller a pointer to the start of a source buffer, a pointer to the start of the destination buffer,…

Are you in need of an additional memory larger than EEPROM? Although EEPROM is a very easy and effective way of storing data on the board, the built in EEPROM only offers only a few bytes of storage. When working with larger or more advanced projects we may need to store additional data so an external memory solution. For that reason, MicroSD card enables you to do this quickly and easily. The following library provides…