11–20 of 29 posts
Not sure what means that most of the C code is auto generated. From what?
Not sure what means that most of the C code is auto generated. From what?
They make models of the software before writing any code, and a lot of the code can be generated from the models . There's a guarantee that if the model is correct so is the code. Or, you don't have to check that your hand-written C actually matches the system you were building.
The two previous Mars rovers had some Java on them. I saw the code with my own eyes!
I believe the confusion between '500,000 lines' in the question vs '2.5 million/3.5 million' in the answers is the context. The 500,000 number is involved in the entry, descent, and landing (EDL) process specifically, and the rover systems are millions overall. Not sure why the values are 1m different, but the 2.5m citation is what is in the linked PDF.
Not sure what means that most of the C code is auto generated. From what?
Thanks for posting! The existing answer had almost no detail, so I wrote another: http://programmers.stackexchange.com/a/159687/61021
The author, Ben Cichy, was the guy in Flight Control during the landing last night, sitting behind the position marked "Flight Software". So he's definitely a good source for the background ;-)
Not sure what means that most of the C code is auto generated. From what?
They make models of the software before writing any code, and a lot of the code can be generated from the models . There's a guarantee that if the model is correct so is the code. Or, you don't have to check that your hand-written C actually matches the system you were building.