Blog
- Security
Getting Started with Embedded Linux
Finally, we are allowed to talk about it: idastroem developed large parts of the software of an IoT high-torque screwdriver for torcbrain.
This covers firmware, security and web interface, as well as cloud integration and an OPC-UA interface.
Our customized Embedded Linux Image is used, which already includes adapted device drivers and an up-to-date kernel for the project. The image is automatically created on our CI/CD servers and is therefore 100% traceable.
Simple Hardware Design
By using the SiP from Octavo Systems, the number of components and area were significantly reduced and the layout simplified. As an official Octavo Systems system partner, we benefit from direct contacts and further technical information.
Fast Boot Time
To ensure the security functions, it is important that the M4 code starts quickly. Therefore, we have developed a small and secure bootloader that enables short boot times for the M4 coprocessor and the subsequent Linux system.
Utilizing Existing M4 Code
The real-time capable coprocessor is largely compatible with the STM32 family and is based on a Cortex-M4 core running at 208 MHz.
Know-How and Anti-Clone Protection
The encrypted M4 code is decrypted only in the internal SRAM of the M4 and protected from being read by Linux through Trustzone.
Communication between the Linux application and the real-time controller is done through a dual-port RAM interface, allowing for maximum performance.
OTA Firmware Update
With the standardized Linux image, simple and secure updates of all system components are possible, for example via USB or online through access to our cloud infrastructure.
Through the rollback function, the operator can start the previous software version in case of unexpected problems after the update.
- Embedded Linux
OSD32MP157C Linux fast boot demonstration
- Datasheet - English
- Fast boot => (MCU starts after ≈ 0.4s, Linux starts after ≈ 1.1 sec.)
- Complete secure boot solution (know-how protection, encrypted MCU code)
- Current, unmodified mainline Linux kernel
- Ideal for transitioning from existing microcontroller solutions
- (ARM M0/M4, STM32 Controller, ESP32, …)
Watch the blue power LED at the bottom left when the count-down ends.
- Motor Control
BLDC-Sensorless Motor-Control Evaluationkit
Discover within seconds whether sensorless control of a BLDC motor is suitable for your specific application.
Our evaluation kit makes it easier to get started with this advantageous technology.
- Datasheet - German
- Datasheet - English
- STM32MP157-DK2 from STMicroelectronics
- TFT display with touch function
- ext. monitor (HDMI) / USB mouse
- Ethernet interface
- for web browser access
- 12-36V input
- BLDC motor connection
- Motor power stage
- idastroem BLDC_MP15x
Principle of operation of sensorless motor control
The control observes the motor’s response to the control signals and calculates the current rotor position and rotation speed based on a mathematical model.
The motor model is continuously updated and adjusted to the actual motor parameters. This eliminates time-consuming and error-prone calibration and measurement runs.
”Wheel of Fortune” Demonstration
(first presented at Embedded World 2020 at the DH electronics booth)