HDC2010 is an integrated humidity and temperature sensor that provides high accuracy measurements with very low power consumption, in an ultra-compact WLCSP (Wafer Level Chip Scale Package). Below you will find a simple example to get temperature and humidity of this sensor by connecting it via I2C to an STM32 microcontroller.
How to write data to the internal FLASH memory of an STM32
There is a common practice of today’s embedded systems to perform firmware upgrade using custom procedures in order to support different communication protocols during the data transfer such as (KWP2000 etc). For that reason the stock STM bootloader(DFU) is not useful and the development should proceed by creating a custom bootloader that supports the requested functionalities as well as...
STM32 DiscoF7 Simple CAN Frame Transmitter + GUI
This example contains a simple STM32CubeMX + Atollic project based on the STM32F7-Disco board which is able to transmit a CANbus Frame. On top of that the board has a really basic GUI with touchscreen capabilities to activate/deactivate the transmission and of course give a feedback of the procedure. You can freely use alter copy this project but keep in mind that it is a sample and not commented...
STM32 video player over network
This example presents a simple video streaming(PC) and video player(STM32F746 board). The video streaming solution is designed to be flexible with a simple “threading” architecture that allows customization. Due to the image processing limitations (missing JPEG decoder) of the STM32F746) which acts as a client, the server (linux PC) is responsible to decode the selected media files and transmit...
Cortex M atomic operations – Critical section
In concurrent programming, concurrent accesses to shared resources can lead to unexpected or erroneous behavior, so parts of the program where the shared resource is accessed are protected. This protected section is the critical section or critical region. It cannot be executed by more than one process. Typically, the critical section accesses a shared resource, such as a data structure, a...
STM32 Firmware Upgrade Through CANbus
Using the 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...
STM32 Firmware Upgrade
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 (use HxD application to perform this...
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...
