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On May 25 2013 08:37 3FFA wrote:I went to try and figure out how to use view controllers, thought this would be great... http://www.slideshare.net/bobmccune/creating-container-view-controllers*puts it into latest version of Xcode* error error error D: If anyone could tell me how to make these overcomplicated view controllers for my iPhone/iPad applications in XCode it would be a great help! Currently working on my final project for my Obj C & App Development class, so the sooner the better.
What about view controllers are you looking for help with in particular?
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On May 25 2013 08:44 RoyGBiv_13 wrote:^_^ just got a pair of CC2538 chips in the mail to play around with. So far I've got contiki os installed on each board, but can't get lights to turn on, and I have no clue where the console is being output. Embedded4lyfe.
Where can I learn about how these things? Embedded systems sounds really interesting to me. I'm kind of potentially planning on going into EE instead of CS or maybe double major EE/CS or CE or just back to CS. Don't really know yet but I have time to decide while I still take care of generals. Is there a way to get into messing with embedded systems while still being fairly new to programming? Been learning C for a while on my own but I wouldn't say I'm any good at it.
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On May 25 2013 18:28 Azerbaijan wrote:Show nested quote +On May 25 2013 08:44 RoyGBiv_13 wrote:^_^ just got a pair of CC2538 chips in the mail to play around with. So far I've got contiki os installed on each board, but can't get lights to turn on, and I have no clue where the console is being output. Embedded4lyfe. Where can I learn about how these things? Embedded systems sounds really interesting to me. I'm kind of potentially planning on going into EE instead of CS or maybe double major EE/CS or CE or just back to CS. Don't really know yet but I have time to decide while I still take care of generals. Is there a way to get into messing with embedded systems while still being fairly new to programming? Been learning C for a while on my own but I wouldn't say I'm any good at it.
For starters, I'd recommend getting one of these. The downside is that without external equipment (sensors, motors, w/e) there's not really much to do with it. But Arduinos in general are a great base for any embedded system, and really easy to program too.
There's loads of documentation and tutorials on the web about using Arduinos.
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oh man, embedded stuff is fun but it's also relatively hard because it's multidisciplinary. I'm studying a bachelor of engineering (mechatronic) and it's basically electronics, programming and mechanical engineering in one.
Arduino is a fantastic starting point and I highly recommend an inventor's kit or something like that to get started... there are tons of different "Development kits" available and they all have their different uses.
https://www.sparkfun.com/categories/2
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Could I build a remote controlled car from scratch with those? I always wanted to do something like that but had no idea how to go about it.
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Sweden11767 Posts
So, for the last school year I've been programming C++ in Visual Studio 2010 (because my now former teacher said that we should do so) but I'm wondering if it's worth to upgrade to VS2012?
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On May 24 2013 10:37 phar wrote:
oh jesus my x86 is rusty
mov eax, 56111 // sticks 56111 into the 4 bytes of eax (? is it 4 or 8? fuck if I know, we're going with 4 byte registers woo)
mul eax // multiplies ? by eax, puts result into edx:eax... so is that 56111^2? I think no second arg means by itself here, not sure.
mov edx,0 // puts 0 into edx, so this means we get the 16 least significant bits of 56111^2... 29345 ?
div x // dword 100 is 4 bytes, so we're taking dividend/divisor (edx:eax is dividend, which recall is 29345, x is divisor, which is 100), result goes into eax and remainder goes into edx (or switch around?) 29345 / 100 = 293 remainder 45
so that sticks 293 in eax and 45 in edx
mov edx, 0 // zeroes out edx again
div y // same deal, except dividnig by something bigger than 293, so we get eax = 0, edx = 293.
mov eax, edx // intel backwards notation, moves edx into eax, so we end up with 293.
OR MAYBE THAT'S COMPLETE BULLSHIT I DUNNO LOL
Best explanation of assembly I've ever read. You have the perfect voice for it too.
If you want to know what a block of assembly does, wouldn't you just run it with a debugger?
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On May 25 2013 19:47 XythOs wrote:
Could I build a remote controlled car from scratch with those? I always wanted to do something like that but had no idea how to go about it.
Yes, you most definitely could.
I'm not sure how far from scratch you mean, would you want to be building your own servos and radios? If so you'd have a lot of electrical and mechanical engineering to learn.
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On May 25 2013 19:48 WindWolf wrote:
So, for the last school year I've been programming C++ in Visual Studio 2010 (because my now former teacher said that we should do so) but I'm wondering if it's worth to upgrade to VS2012?
I assume you're still in school so it's free? VS2010 faster in multiple ways (startup, compilation, intellisense) and has more support for a few neat C++11 features (but if your teachers only have VS2010 you obviously can't use those).
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On May 25 2013 19:50 CatNzHat wrote:
Yes, you most definitely could.
I'm not sure how far from scratch you mean, would you want to be building your own servos and radios? If so you'd have a lot of electrical and mechanical engineering to learn.
Well not exactly from scratch. Kinda like Lego Mindstorms. 
So many cools things to learn, if I just had the time.
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On May 25 2013 11:46 enigmaticcam wrote:Show nested quote +On May 25 2013 08:37 3FFA wrote:I went to try and figure out how to use view controllers, thought this would be great... http://www.slideshare.net/bobmccune/creating-container-view-controllers*puts it into latest version of Xcode* error error error D: If anyone could tell me how to make these overcomplicated view controllers for my iPhone/iPad applications in XCode it would be a great help! Currently working on my final project for my Obj C & App Development class, so the sooner the better. What about view controllers are you looking for help with in particular?
Trying to make an app with more than 1 viewcontroller, and the ability to switch between them. Everytime I've found something... it was for iOS 5 not 6 and it failed... ._.
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On May 25 2013 19:48 WindWolf wrote:
So, for the last school year I've been programming C++ in Visual Studio 2010 (because my now former teacher said that we should do so) but I'm wondering if it's worth to upgrade to VS2012?
There a ton of improvements in 2012. You might not use them all, but it's definitely worth switching unless it will cost you. VS2012 is also completely backwards compatible with 2010, so there's no issue with upgrading.
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On May 25 2013 19:47 XythOs wrote:
Could I build a remote controlled car from scratch with those? I always wanted to do something like that but had no idea how to go about it.
You can easily control two servos (for steering) and a motor with an Arduino, not sure how complicated the whole remote thing is though.
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Sweden11767 Posts
On May 25 2013 20:45 Tobberoth wrote:Show nested quote +On May 25 2013 19:48 WindWolf wrote:
So, for the last school year I've been programming C++ in Visual Studio 2010 (because my now former teacher said that we should do so) but I'm wondering if it's worth to upgrade to VS2012? There a ton of improvements in 2012. You might not use them all, but it's definitely worth switching unless it will cost you. VS2012 is also completely backwards compatible with 2010, so there's no issue with upgrading.
I can get VS (and other software) through Dreamspark, so upgrading will be free for me.
Thanks for the tip, will stick with 2010 until my semester ends though.
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On May 25 2013 20:13 3FFA wrote:Show nested quote +On May 25 2013 11:46 enigmaticcam wrote:On May 25 2013 08:37 3FFA wrote:I went to try and figure out how to use view controllers, thought this would be great... http://www.slideshare.net/bobmccune/creating-container-view-controllers*puts it into latest version of Xcode* error error error D: If anyone could tell me how to make these overcomplicated view controllers for my iPhone/iPad applications in XCode it would be a great help! Currently working on my final project for my Obj C & App Development class, so the sooner the better. What about view controllers are you looking for help with in particular? Trying to make an app with more than 1 viewcontroller, and the ability to switch between them. Everytime I've found something... it was for iOS 5 not 6 and it failed... ._.
You'll want to check out navigation controllers. A navigation controller is what allows you to transition between different view controllers.
You don't even need to subclass the navigation controller. Chances are your starting view controller most likely already sits in a navigation controller. If you want to transition from one view controller to another, you can do something like this:
@implementation currentViewController {
// Hold a reference to the child view controller so it's not lost as soon as it's presented
nextViewController _nextViewController;
}
// Let's navigate to the next view controller
- (void)userDidSomething {
// Create an instance of my next view controller
_nextViewController = [[nextViewController alloc] init];
// Display my next view controller
[self.navigationController pushViewController:_nextViewController animated:YES];
}
There are other ways to do it, e.g. storyboards. But if you're on a deadline, this is the simplest way.
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Thanks! I don't have a chance to test it atm but is there a way to set it up so the user can manually switch back and forth between the different views or should I use
// Display my next view controller
[self.navigationController pushViewController:_nextViewController animate:YES]; in a button on-screen to do it?
What I need to make requires 'pages' like in a book or such.
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On May 25 2013 18:28 Azerbaijan wrote:Show nested quote +On May 25 2013 08:44 RoyGBiv_13 wrote:^_^ just got a pair of CC2538 chips in the mail to play around with. So far I've got contiki os installed on each board, but can't get lights to turn on, and I have no clue where the console is being output. Embedded4lyfe. Where can I learn about how these things? Embedded systems sounds really interesting to me. I'm kind of potentially planning on going into EE instead of CS or maybe double major EE/CS or CE or just back to CS. Don't really know yet but I have time to decide while I still take care of generals. Is there a way to get into messing with embedded systems while still being fairly new to programming? Been learning C for a while on my own but I wouldn't say I'm any good at it.
My advice is to figure out early on which one you prefer (CS or EE) and do ONE, not both. I did both (all three if you count CE too), and while it was fun, it caused a lot of undue stress and turned out to be kinda worthless. Pick one, and if you really want to do the same ~5 years would have required to do both (at a 130%-150% course load too), GET A MASTER'S INSTEAD. I wish someone had told me this before my 9th semester when it was too fucking late, lol. Now when I go to a job interview, the conversation isn't, "Oh, cool, three majors," it's "So... why again did you get a EE degree?"
So take an intro circuits lab, and some intro CS programming, figure out which one you prefer. Maybe take a few classes in the other on the side, but I strongly advise not committing fully to both.
Don't get me wrong, I think embedded systems are fun as hell, and comp architecture is the coolest thing ever. It's just really hard to do both CS & EE in a reasonable amount of time without stressing out too much. Shit gives you gray hair.
Also just a heads up, if you are going to be doing EE, Arduino could be a fun start. But in an EE lab in Uni, you're likely going to be working more from scratch, so Arduino will spoil you by doing the circuit assembly for you. You may instead want to get a cheap (~$1) mcu and a pile of leds/resistors/caps and go from there. Learn the hard way, because it's not exactly trivial assembling the proper circuit and writing the basic low-level code for configuring registers for IO 'n shit. If you're just dicking around and won't have to learn that in school, then skip the build from scratch part and pick up something like an Arduino - save yourself the headache.
On May 25 2013 19:49 CatNzHat wrote:Show nested quote +On May 24 2013 10:37 phar wrote:
oh jesus my x86 is rusty
mov eax, 56111 // sticks 56111 into the 4 bytes of eax (? is it 4 or 8? fuck if I know, we're going with 4 byte registers woo)
mul eax // multiplies ? by eax, puts result into edx:eax... so is that 56111^2? I think no second arg means by itself here, not sure.
mov edx,0 // puts 0 into edx, so this means we get the 16 least significant bits of 56111^2... 29345 ?
div x // dword 100 is 4 bytes, so we're taking dividend/divisor (edx:eax is dividend, which recall is 29345, x is divisor, which is 100), result goes into eax and remainder goes into edx (or switch around?) 29345 / 100 = 293 remainder 45
so that sticks 293 in eax and 45 in edx
mov edx, 0 // zeroes out edx again
div y // same deal, except dividnig by something bigger than 293, so we get eax = 0, edx = 293.
mov eax, edx // intel backwards notation, moves edx into eax, so we end up with 293.
OR MAYBE THAT'S COMPLETE BULLSHIT I DUNNO LOL Best explanation of assembly I've ever read. You have the perfect voice for it too. If you want to know what a block of assembly does, wouldn't you just run it with a debugger?
Yea, except I forgot that 8 * 4 = 32, not 16. woo
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Some addendum to that advice: sort of depends on the person too. If you're going to be totally fine with having literally 0 free time (read: no video games), taking 150% course loads, having an extra year to graduate, and then not actually having a leg up when getting a job, sure. If you just want to learn all that shit, go for it. Also if your Uni doesn't have a reasonable EE or CS master's program that you could get in to, then it may be a different situation.
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On May 26 2013 01:01 3FFA wrote:Thanks! I don't have a chance to test it atm but is there a way to set it up so the user can manually switch back and forth between the different views or should I use // Display my next view controller
[self.navigationController pushViewController:_nextViewController animate:YES]; in a button on-screen to do it? What I need to make requires 'pages' like in a book or such.
If I get what you're saying, you're imagining a forward button on the right and a back button on the left that navigates between "pages" (view controllers)? Each page will need to create its own bar button item on the right that does a push to the next page, but the left bar button that goes back will automatically be generated for you by the navigation controller when you do a push.
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Ok thanks again! That is what I meant.
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EPT
