Cortex M0 internal Failure solution for ALU, CPU and Register rong results

A Cortex M0 is pretty tiny and they tend to be built to a fairly conservative specification rather than pushing the limits so they are very reliable. You've got to measure what your requirements are and what is actually likely - for instance people are always drilling holes in walls - would that maybe destroy whatever it is. As to software solutions it sounds like you want something like double entry bookkeeping - eliminate most errors by using two processors doing the problem in completely different ways and see if the results match up. This has been done in bigger computers with fiber optics for the connections but people still code things in a similar way even in separate teams and make the same mistakes that way.

A Cortex M0 is pretty tiny and they tend to be built to a fairly conservative specification rather than pushing the limits so they are very reliable. You've got to measure what your requirements are and what is actually likely - for instance people are always drilling holes in walls - would that maybe destroy whatever it is. As to software solutions it sounds like you want something like double entry bookkeeping - eliminate most errors by using two processors doing the problem in completely different ways and see if the results match up. This has been done in bigger computers with fiber optics for the connections but people still code things in a similar way even in separate teams and make the same mistakes that way.