E-sys Coding

[Marti Buday]

The BMW E-sys is a software application released by BMW for coding applications on BMW F-series vehicles. The software allows users to disable and activate certain features on their F-series vehicles.

1. Lock unlock sound confirmation
2. Operate the navigation menu including watching DVD when driving.
3. Display engine output and torque meter.
4. Cancel confirmation screen big screen boot delay.
5. Open the voice recognition function
6. Set up three kinds of Bluetooth phone ringtones.
7. Increasing the cic memory address to 50.
8. Air-conditioned memory of the last off state.
9. Indoor cycling memories of the last time the state when engine off.
10. A-pillar electric tailgate buttons and remote control key to close the power tailgate.
11. Increase shift paddles.
12. Modify small screen to a large screen display.
13. Pdc display vertical and horizontal.
14. Disable the seat belt status display - passenger seat.
15. Disable the seat belt status display - driver seat.
16. Disable seat belt reminder - passenger seat.
17. Disable seat belt reminder - driving position.
18. Disabled unfasten seat belt voice prompts - passenger seat.
19. Disabled unfasten seat belt voice prompts - driving position.
20. Intersection vehicle high beam automatic control.
21. Angel eyes open and cancel functions.
22. Turn off the engine start-stop function - turned on by default.
23. Gps time synchronization.
24. Foot open the back cover.

Coding using BMW E-sys is the process of configuring the software system built-in on your BWM vehicle, this should not be mistaken with programming. Unlike programming, the risk of messing up the functions of your vehicle is minimal. However, you still need to be careful when configuring your vehicle using BMW E-sys. You should be knowledgable of the changes and the codes that you've applied on your vehicle. If you're still new to the software, you should have a guide to follow the basic processes.

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I am talking about specifically those in the industry that are diligently and honestly trying to make the coding system work. I think sometimes as electricians and/or electrical engineers we can over complicate things. It should be remembered while we are producing these reports and mostly, we understand them the great many receiving them do not. We are left having to explain the coding system and why we have arrived at those codes.

A few particular aspects of this cause me concern, particularly to do with metal enclosures, fire escape routes and fireproof fixings. Now please keep in mind I am not talking about the justification for using all of these things on new installations but the approach to coding them on older installations.

If we apply the understanding of GN3 and BS7671 a lot of codes issued as code 2 for some of the above situations could and maybe often should be C3 at most. However, many of the additional guides and publications from industry bodies suggest using code 2 and give very valid reasons for doing so.

Now if we flip back on to the electrical industry are, we saying fireproof enclosures are a safety improvement and development with time? Are they a safety requirement at all? If not, why do have to install fire resistant enclosures in new installations? Or is this a manufacturing failure with poor terminations in plastic enclosures? Poor regulation, training and badging by CPS bodies? Should the liability for remedial work not lie with them or at least the survey to determine if remedial work is required lie with them? The motor industry is not waiting for MOTs to find them.

The same for fireproof fixings, is this a development of safety through time or is it a failing in the guidance and regulations gone by? Should it be the responsibility of EICR inspectors and testers to first find and then encourage rectification of such things?

In my opinion the whole while we are arguing and debating should it be a C2,C3 or FI we are ignoring the real elephant in the room. Who is writing and amending these regulations? Is it those who if we are most truthful hold a large responsibility for the regulations and quality of operatives and materials? If so, surely that is a huge vested interested.

Electricians are buried under more and more regulation and grey guidance that we have to interpret and use engineering judgement. This just diverts or stops the real road of liability for me. At the moment on an EICR, particularly on large installations I would use an FI code for a structural engineer to make an assessment of legacy fixings in premises with the issue of entanglement in mind.

Going back to fire in consumer units are we saying plastic consumer units are dangerous or not? Only under the stairs or with Mrs Smith Hello Magazine collection pilled around them? Is it really up to electricians to make that judgement?

If an issue with poor terminations is in place surely a recall process of competent and able electricians verifying correct tightness of terminations would be the solution? Not simply leaving EICRs and those applying codes to argue and debate with those in the industry and clients.

It is easy to sit and say well this is clearly an xyz code or that is why it is a code 2. We can talk and discuss and back slap our own intelligence all we like. But nothing changes other than our own ego.

We need to empower inspectors and testers to use engineering judgement and having clear concise industry guidance behind them. Give them confidence to carry out that work and not wait for the coding police to pull them apart.

This problem is simpler than many others we have done, but we will solve it now with special attention to the representation of the data. We want to represent a student's grades, so let's store them in a grade list.

In Python, the types of the variables are not annotated along with the names of the variables. Therefore, we need to be very careful in how we name our variables, to be clear when we are dealing with a scalar value, or with a list of scalars. For that, we must use the names consistently:

Since we already know how to represent the data in the computer's memory, we can now pass the writing of the algorithm. You must write an algorithm and build your program incrementally. I'm going to go ahead with all this and show the program ready.

It should now be clear why restricting ourselves to scalar lists is insufficient: we need both the grade list for all exercises for one student and the grade list for one exercise for all students. To make this problem more concrete, let's solve the following problem:

Before we start writing our algorithm and program, we need to think about how we are going to represent the data in memory. What changes is that now, in addition to representing the grades of a student's exercises, we need to keep the grade table for the entire class. Let's extend our convention:

We kept the three functions of the previous program. Being organized and using function names and consistent variables really saves life! We will then study the other functions, starting withler_tabela_notas.

Note which function ler_tabela_notas surprisingly similar to the function ler_lista_notas. This does not happen by chance. Whatler_lista_notas does is to build and return a list of elements, each of the type float. In the same way, ler_tabela_notas builds and returns a list of elements, but this time, each element of the list is another list.

Finally, let's look at the function main. Her instructions should already be self-explanatory (did you notice that she has no comments?). Let's just look at the function call calcular_media_excluida. This function receives a list of notes as the first parameter. In fact, this is exactly what we pass on to her: tabela_notas[i] is the list of index student grades i. If you feel more comfortable, you could replace that line with the lines below. It is completely equivalent!

The main data structure that we created in the previous example was a list of scalar lists! If we want, we can write our table of notes as a table of fact. The following variable represents three students, each student has four grades.

In Linear Algebra it is common to perform operations with matrices, such as sum, product for scalar, product of matrices, etc. Since Python does not understand the concept of matrix, nor does it understand how to perform these operations. So we have to implement each one. We are going to implement the sum operation and make a function to test it.

In function somar_matrizes we decided to create the matrix soma line by line. Notice that we added linha The matrix soma before even adding the cells that will make up that row. We could add the line only afterwards, it doesn't matter.

To understand this function, it is useful to simulate and look at the representation in memory. The following figure shows the program's memory when executing the function somar_matrizes during iteration i = 1 the outer loop and at the end of the iteration j = 0 of the inner loop.

Now that we know how to work with data collections a little more complex than lists of numbers or lists of strings, the need to store data permanently should be more latent. The strategy of always typing data using the keyboard does not work. So, we want to distinguish the computer memory in

While the extension can be used by the operating system to classify files, it is important to know that nothing prevents files from having content that does not match the extension. So, a file arq.txt it can be the name of an executable program, and so on.

Every program runs from some directory. This is called the working directory. To find the working directory on a terminal, type pwd ( cd on Windows). So, to reference another file, we use the simple name or the full name in the directory hierarchy, depending on the current directory.

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