281 Results for "freertos"

Shell, Interrupted
Log from NYETduinoPlusLua
Summary: I managed to get the shell receiving data by crowbarring eLua to not install interrupt handlers. Deets: Where I left off, I found that my UART receive function was never called. At the time it seemed that the eLua is expecting there to...

Testing wireless connectivity + uPyCraft IDE
Log from Haptic Sleeve
To start off, I tested the ESP32 wireless connectivity using the built in examples in Zerynth. I tried the 'WiFi_Scan' example, and was able to successfully discover all of the available WiFi networks in my vicinity.Since the ESP32 program...

Revision 2.0 Initial Testing
Log from CAN Controlled Dual Closed-Loop Motor Controller
As discussed in the previous log, I developed a 2.0 version with a main goal of improved performance. I upgraded the microcontroller from a Cortex-M0 core to a Cortex-M4F alternative. While doing this, I also jumped from Microchip's SAM line of microcontrollers...

Hacking the SDK
Log from Bare metal second core on ESP32
It's finally hacking time ;) We try to patch the SDK, so we get control over the APP core, while still letting the SDK handle the initialization. Ideally, our main will behave similar to a FreeRTOS task while running bare metal. Approach First, we need...

Resource Tracking and Implementing the 'Default' Task
Log from Careless WSPR
Summary 'Real Work' begins by fixing up some things in the FreeRTOS and HAL libraries, and implementing the skeleton of the 'Default' task. The Default task performs systems initialization and resource usage monitoring. Deets First, I update some...

Reimplement Realloc Redux
Log from NYETduinoPlusLua
Summary: I have implemented 'realloc' in the FreeRTOS 'heap_4.c' implementation, along with some other debugging features. Deets: We left off with my mentioning a way to intercept and redirect function calls at link time (on gcc, using 'wrappers'), but...

More Testing...
Log from LoRaWAN Feather
Time now to take a look at the STC3100 fuel gauge IC. As a starting point, I'll be using this library on GitHub. I'm not sure if it is an official ST repository/account, but the driver looks useable. It just needs an I2C implementation...

2021-01-28 Update
Log from BlueRetro
Already a month in the new year! No new release yet but I figured I'll make a quick update since I feel I still got some weeks of work ahead before anything new. One of the biggest challenge doing BlueRetro is systems protocols that requires to use software...

Progress on the video card firmware
Log from Twitter feed on an old LED marquee
The firmware development on the "video card" is going along nicely. I took an example project for the FRDM-KL25Z that was sending SPI data with FreeRTOS. Then I modified it to control the LED drivers via SPI.You can have a look at the source code here:...

NOS
Details from NOS
NOS (Not an Operating System) is not a novel concept. In fact, certain RTOS implementations already include CoRoutine implementations for this exact reason.A list of already existing implementations include:FreeRTOS' CoRoutinesAdam Dunkels' ProtothreadsPumpkin's...

'STEPPER POSITIONING ROUTINE'
Log from 'Thor' robot with addons and GUI
Worked hard on the stepper positioning routines, used freeRTOS for multitasking so that all steppers can work at the same time! access time 1ms! for all steppers. Arduino due has a lot of power against arduino mega. running on 80mhz. This video clip...

Code Overview 5: Project Structure
Log from HEXABITZ - Modular Electronics for REAL
Hexabitz software is released as a compiled HEX file and a uVision project along with source files for each module. The project folder contains the following subfolders: BOS: Contains source files for the BOS.H01R00 (or other PN): Contains source files...

Blinky Stage 2
Log from Confagrid
I decided that I would try the ESP32 as the main microcontroller for Confagrid, I was going to need some sort of wireless communication and the microcontroller in the ESP32 looked plenty capable and the ESP-IDF based on FreeRTOS looked like it would...

TraceSniffer
Details from TraceSniffer
We are four students from germany, majoring in electrical engineering. In our fifth semester we had a practical course about RTOS (FreeRTOS in our case) where we would measure a DAC Output, which changed its value corresponding to the current running...

Update 4: VESC, ODrive support & new command system + HID
Log from Open FFBoard
ODrive and VESC based motor drivers can be used via the CAN bus now. Those drivers need to be configured manually for torque mode as the FFBoard will just be sending torque values and reading the encoder positions from the drivers. The old command system...

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