Could someone compile a C program for me?

Ian Rogers

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• Feb 12, 2014

• #21

Excellent!! A video perhaps!!

 

dr pepper

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• Feb 12, 2014

• #22

What drive a car, hold a camera and a brew at the same time?

 

Ian Rogers

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• Feb 12, 2014

• #23

I'll let you finish the brew!!!!

 

large_ghostman

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• Feb 12, 2014

• #24

some the pic 16's have a periph that overlays a signal with sign wave, or the other way round, I cant remember

 

dr pepper

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• Feb 12, 2014

• #25

Are you talking about the capacitance module, or is this something I've not heard of yet.

I'm developing my own slot protocol, seems that switching the track polarity using a H bridge and an rs232 signal is a good enough way to do it, instead of a preamble I'm just going to use words with bit 7 set for instructions and bit 7 clear for data.

 

large_ghostman

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• Feb 13, 2014

• #26

no not the CTMU, I looked at it when I was looking at how they do DCC systems for model railway, I cant remember the name of the peripheral, but I do remember it was on a pic16 as I use 18f as the norm. Also I remember something about it encoding a dc signal over a AC waveform or something. I am betting if I troll through my pics I will find the chip, then I can look at the datasheet! I am pretty sure I did get hold of a sample but decided against it, mainly because I was used to 18f, and at the time 16f seemed a bit alien

 

Ian Rogers

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• Feb 13, 2014

• #27

Are you talking about the DSM on the pic16f1825

The Data Signal Modulator... I'm not sure if you could drive trains off the carrier though..

 

large_ghostman

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• Feb 13, 2014

• #28

hmmmm hang on will go look at its datasheet

 

large_ghostman

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• Feb 13, 2014

• #29

yes it was that! the idea was to see if it could send commands to the chip in the train, like the DCC system, I wasnt going to power anything with it as such.
But anyway it was dropped for something else ,and I have not had chance to set anything up, once I knew we were moving, it all got packed away and I stopped work on it. I still havnt unpacked most of it let alone work on it. but yeah well done! that was exactly what I was talking about no idea if it is any good for what you want tho

 

dr pepper

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• Feb 13, 2014

• #30

Yes I have seen that too, I've done something similar using the pwm module and external logic with a 'f88.
I think its square wave only.
I dare say you could use it to drive a fet or a bridge ic.
I'd considered a circuit that uses ook over the power supply, this circuit does the job, you could do away with the 74240 if you had a dsm to hand.

https://electronicdesign.com/communications/simple-circuit-communicates-over-low-voltage-power-lines