SOS For LED or Flash

[veterinarian2008]

Hey guys!

I need some help on getting SOS flashing on the LED.

I have the strobe working but how do I get the flash to do it at a specific set of intervals?

Thank you. BTW I know what is NSTimer on the docs but my question is how do I do it for the LED.

[Duncan C]

Originally Posted by veterinarian2008

Hey guys!

I need some help on getting SOS flashing on the LED.

I have the strobe working but how do I get the flash to do it at a specific set of intervals?

Thank you. BTW I know what is NSTimer on the docs but my question is how do I do it for the LED.

Post the code that you wrote to turn on and off the torch.

You're trying to send SOS in Morse code?

That would take some design work.

I'd create an array of on/off states (NSNumbers containing booleans), and an array of durations (NSNumbers containing floats). You'd need to fill the arrays with the correct values for the dot-dash patterns to flash SOS, and include pauses between the letters.

State      Duration
on         short
off        short (pause)
on         short
off        short (pause)
on         short

off        long (inter-letter pause)

on         long
off        short (pause)
on         long
off        short (pause)
on         long

off        long (inter-letter pause)

on         short
off        short (pause)
on         short
off        short (pause)
on         short

off        extra long (turn off torch at end, and inter-word pause for repeat.)

I'd write a method that indexed into the array of states and set the torch to that on/off state, then started a 1-time timer at the specified duration interval that called the method again.

I'd use an instance variable to keep track of my place in the array of durations.

Once I reach the end of the array, I'd ether stop, or loop back to the beginning, depending on what I wanted to do.

[veterinarian2008]

Thanks for the replay Duncan.

Okay, you can download the source code of this app. That is the code I am using:

http://www.Vellios.com/files/iStrobeSource.zip

I am not making another LED flashlight lol.

But I am using the very exact code of that app on my app.

Take a look at what they have if you can.

[Duncan C]

Originally Posted by veterinarian2008

Thanks for the replay Duncan.

Okay, you can download the source code of this app. That is the code I am using:

http://www.Vellios.com/files/iStrobeSource.zip

I am not making another LED flashlight lol.

But I am using the very exact code of that app on my app.

Take a look at what they have if you can.

I mentioned your SOS plans to my son, and he tells me he has an app that includes the ability to flash the LED (and screen) on his phone in a variety of patterns, including SOS. It's called AppBox Pro. It's a suite of mini-apps.

Did the plan i outlined make sense?

[veterinarian2008]

Originally Posted by Duncan C

I mentioned your SOS plans to my son, and he tells me he has an app that includes the ability to flash the LED (and screen) on his phone in a variety of patterns, including SOS. It's called AppBox Pro. It's a suite of mini-apps.

Did the plan i outlined make sense?

Okay lol

Well sort of. I kind of get what you mean but not sure how should I start it.

[Duncan C]

Originally Posted by veterinarian2008

Okay lol

Well sort of. I kind of get what you mean but not sure how should I start it.

What part? Creating the arrays? Writing the method that turns the torch on and off and triggers the timer? The code that triggers the timer? All of it?

[veterinarian2008]

Originally Posted by Duncan C

What part? Creating the arrays? Writing the method that turns the torch on and off and triggers the timer? The code that triggers the timer? All of it?

ahah! yea. Well, I get the abstract vision of what your telling me but I have no clue how to do the programing on that part. Setting the timers etc.

If you can help me get started on at least the first one, I can finish the rest. I am not asking you to, but if you want THAT WILL BE AWESOME! )

I wish I was as good as you guys that are replaying pretty much every thread! lol I will someday.

Thanks

EDIT: Also I just simply want to have a button with an SOS icon on and when they press that it will start flashing.
I don't care if is a different code to turn the torch on. (Preferably the one I am using tho)

[Duncan C]

Originally Posted by veterinarian2008

ahah! yea. Well, I get the abstract vision of what your telling me but I have no clue how to do the programing on that part. Setting the timers etc.

If you can help me get started on at least the first one, I can finish the rest. I am not asking you to, but if you want THAT WILL BE AWESOME! )

I wish I was as good as you guys that are replaying pretty much every thread! lol I will someday.

Thanks

EDIT: Also I just simply want to have a button with an SOS icon on and when they press that it will start flashing.
I don't care if is a different code to turn the torch on. (Preferably the one I am using tho)

At this point in your learning, my typing out the code for you isn't really going to help you. I'd need to get it perfect, or it wouldn't work. To do that, I'd need to build a project and actually test it. I can create your project for you, but you're going to have to pay me for that, and I'm expensive.

You should buy a book on iOS programming and read it, doing the exercises as you go.

[veterinarian2008]

Okay thanks!

I was actually going to ask you if I could pay you.

Whats your email? We can take on from there. Thanks.

mine is mortizvet@aol.com