There are several situations where we need to use a UART/Serial interface to connect our microcontroller with an external device. However, a common issue is that in most of those cases we do not know in advance the size of the messages thus, our final application needs to use either per character interrupt or a more advanced way like DMAs. Each method has it’s own pros/cons. As you can...
STM32L0xx HAL – DMA register callback issue
This is a simple bugfix of the HAL library (unfortunately ST does not allow external commits). If you have any issues regarding the function HAL_DMA_RegisterCallback(...) using the option HAL_DMA_XFER_ALL_CB_ID
CAN Frames Echoing Thread for STM32F779-Eval board
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...
Simple Framework for STM32F779-Eval board
The following simple framework is used in almost all the posts here. It provides some extension functions for freeRTOS etc.
CAN frames buffer (received by interrupt) for STM32F779-Eval board
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...
