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Magline joins Rapita Trailblazer Partnership Program to support DO-178 Certification
Eve Air Mobility joins Rapita Systems Trailblazer Partnership Program for eVTOL projects
Rapita Systems launches MACH178 Foundations for multicore DO-178C compliance
Collins Aerospace and Rapita present award winning paper at DASC 2024
Data Coupling Basics in DO-178C
Control Coupling Basics in DO-178C
Components in Data Coupling and Control Coupling
The ‘A’ Team comes to the rescue of code coverage analysis
DO-278A Guidance: Introduction to RTCA DO-278 approval
ISO 26262
Data Coupling & Control Coupling
Verifying additional code for DO-178C
DO-178C Multicore In-person Training (Fort Worth, TX)
DO-178C Multicore In-person Training (Toulouse)
At Rapita we have heard most tales about unusual coding and debugging issues. Here’s one we thought you might be interested in.
A colleague was debugging an RTOS via a serial line debugger. He made a fix, uploaded the changes and then stepped through the code at source level and at assembler level. For some reason this didn't seem to fix the problem.
Much later, he discovered the debugger upload was itself at fault. It computed a CRC of the code, found that this was the same as the CRC of the code on the target, so didn't bother uploading the new code. When running single step, it displayed the updated code, but executed the old code.
Identical CRCs are usually a remote possibility, but it certainly didn’t help that the CRC algorithm was buggy anyway.
DO-178C webinars
White papers
Mitigation of interference in multicore processors for A(M)C 20-193
Developing DO-178C and ED-12C-certifiable multicore software
Efficient Verification Through the DO-178C Life Cycle
A Commercial Solution for Safety-Critical Multicore Timing Analysis
