Watchdog timers are a prevalent mechanism for helping to ensure embedded system reliability. But they only work if you use them properly. Effective watchdog timer use requires that the failure of any periodic task in the...
Proper Watchdog Timer Use
Task Death In Safety Critical Systems
Safety critical systems must be designed with an expectation that one or more tasks on the same CPU might fail via hanging, might fail to be scheduled, or otherwise might not execute in a periodic manner as intended, leading...
Real Time Scheduling Analysis for Critical Systems
Critical embedded software must be created using methodical scheduling analysis that ensures that every task can meet its deadline under worst-case fault-free operational conditions. Looking just at CPU load is not only...
Mitigating Data Corruption
As previously discussed, data corruption from bit flips can happen from a variety of sources. The results from such faults can be catastrophic. An effective technique should be used to detect both software- and hardware-caused...
