Project
Multi-Step Flash Bootloader for Electronic Transmission Control Unit
![](https://helbling.ch/_Resources/Persistent/4/1/5/f/415f84ccc4924c5af53c51c035f5378f2b0673e0/header-bild-3840x640.webp)
An automotive supplier for electronic components develops and produces control units for automatic transmissions with torque converter. The scope for Helbling is to develop a three-step boot concept and implement it in separate software units.
- Renesas microcontroller with separate CAN module
- Three discrete boot levels, tailored to the requirements of the producers in the supply chain (producer of ECU, transmission and OEM)
- Initialization and test of the microcontroller periphery
- Compatibility and validity check of the subsequent boot level
- Flash download of higher boot levels and drive program using UDS over CAN
- Tester authentication and signature checking of downloaded software
- Production test mode and processing of automated end-of-line tests
![](https://helbling.ch/_Resources/Persistent/a/b/2/f/ab2fa2b3830af18c9cfd06969d3ae66763612a3c/slidebildflashbootloader.jpg)
Services
- Consolidate and analyze requirements of different stakeholders
- Establish three-step boot concept
- Implement requirements in all boot levels
- Test of the complete functionality at customer’s lab car
Results / Success
The Boot components are successfully developed and delivered to the customer. As part of the control unit software they are in series use.
![](https://helbling.ch/_Resources/Persistent/7/9/7/c/797c9fc06f18c8cf6751bf8c552619991ad9e30e/01_shutterstock_341967620-papierproduktion-2500x1416.webp)
Cases
Internationales Unternehmen der Papierindustrie – Analyse des Dampfsystems
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![](https://helbling.ch/_Resources/Persistent/1/e/a/c/1eac66b340bec4dadade1921081b56eade559075/Bearbeitungsperimter-4426x3307.webp)
Cases
6-Streifenausbau Aarau Ost – Verzweigung Birrfeld – Bauherrenunterstützung
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Services: