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Embedded and Microcontrollers
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Embedded and Microcontrollers
Pic Microcontrollers Forum Advice on creating an autonomous robot using a PIC18f4585?
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  • State Suggested Answer
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  • Answers 1 answer
  • Subscribers 193 subscribers
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  • autonomy
  • a*
  • c
  • pic18
  • autonomous
  • rtos
  • pic18f4585
  • robot
  • programming
  • vehicle
  • algorithm
  • pic
Related

Advice on creating an autonomous robot using a PIC18f4585?

Former Member
Former Member over 12 years ago

Hello all!

 

I have tasked with improving the autonomy of a small robot vehicle that runs off a PIC18f4585.  The goals for the project are as follows:

 

  • Create a 2D internal representation of the robots environment
  • Use A* algorithm to implement pathfiniding in said environment
  • Possibly use a Powermat (Wireless charger for phone) to implement wireless self-charging

 

Now I do have some limited experience programming for the PIC18, but I was using assembler.  I do also have some limited experience programming with C, but not for the PIC18.

 

I was just wondering whether you guys have any general advice, such as possible pit-falls that I may encounter or any good resources?

 

I'd also be interested to hear your thoughts on using a RTOS for such a project; Is it even possible / necessary? (I did see something about one called PICOS18, but it seems to have dissapeared)


I'm pretty exited to see how this project pans out, and will keep you guys updated.

 

Any advice/ideas would be greatly appreciated.

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  • michaelkellett
    0 michaelkellett over 12 years ago

    This is  a very light weight processor for full-on C programming, only got an 8 x 8 hardware multiplier and a mere 3328 bytes of RAM.

    I wouldn't consider any kind of RTOS for this.

    The usual advice for C embedded programming (on small targets) holds:

    keep it simple

    don't use big complex structures

    code what you want to happen and optimise it when it's working

     

    MK

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  • Former Member
    0 Former Member over 12 years ago in reply to michaelkellett

    Thanks for the quick reply MK, great tips!  As for the RTOS, I had a suspicion that may be the case.  I'll be sure to post if I make any progress, but in the mean time any other tips would be great.

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  • Former Member
    0 Former Member over 12 years ago in reply to michaelkellett

    Thanks for the quick reply MK, great tips!  As for the RTOS, I had a suspicion that may be the case.  I'll be sure to post if I make any progress, but in the mean time any other tips would be great.

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