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PICList Thread
'Concerned wether PIC 16C5X is adequate for my appl'
1996\05\12@153335 by NEIL GANDLER

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       I am planning on using a PIC16C5X for a project. The project
doesnt require much mathematical computation or the highest speed. It
basically will be
       1. Controlling and ultrasonic transmitter and receiver and
calculate object distance as an ultrasonic rangefinder.
       2. Sending simple protocol signals to communicate with an
external device.
       3. Performing simple logic and using the timer to perform
time dependent operations.

I am concerned about the limitation of the 5 series.
The reason I would like to use the 5 series is that I found a 5 series
emulator for about $200. Alot of people told me an emulator would save
alot of headaches when debugging and will save alot of time. My main question
is, what do the higher end PICs provide? I know I have enough RAM and EPROM for
my code and program.

1. Interrupts would be a conveninent features instead of polling, the 5 series
doesnt have them.
2. The maximum nested subroutine limit of 2 may cause a problem, not sure yet.
If a C compliler compensate for this, then it would be no problem.
3. Some extra independent timers would be a big help.
4. Is it worth using a higher end PIC and just write code with trial
and error.

Also, would any of you recommend using a C compiler to reduce the
time it takes to write code, the only problem is that the emulator
requires code in assembly and it may be alot of trouble trying to debug
the compiled assembly, than if I wrote the code myself in assembly.
Does anyone know where I can get a C compiler for 16C5X series and
find some examples?

I would appreciate any advice.



______________________________________________________________________________

                               Neil B. Gandler
                            University at Buffalo
              Department of Electrical and Computer Engineering
                           Masters of Engineering
                        spam_OUTv064mb9kTakeThisOuTspamubvms.cc.buffalo.edu
                    http://www.acsu.buffalo.edu/~gandler/
                               (716) 691-3471

         Seeking career in Instrumentation and Digital System Design
                      San Jose, California  August 1996
              www.acsu.buffalo.edu/~gandler/resume.html
______________________________________________________________________________

1996\05\13@091557 by Mike DeMetz

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A 16C84 (EEPROM) is good for trial and error type programming.
I have seen some prototype boards that let you program them
in circuit.
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*Mike DeMetz                      SYSCON International   *
*.....mikedKILLspamspam@spam@syscon-intl.com            South Bend, IN USA     *
*aka 73165.1230spamKILLspamcompuserve.com    using Pegasus Mail     *
**********************************************************

1996\05\13@121305 by Daniel Henzulea

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       Hi Neil,
I just developed a system based on PIC16C84 and ultrasonic sensors (one
transmitter and one receiver). The system can evaluate distances betwen
0.1 and 6 m and send this to a PC on serial port. If you are interested in
code routines or schemes send me an e-mail at:

               .....zuleaKILLspamspam.....utcluj.ro

1996\05\14@074142 by Alexandre Guimaraes

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> I just developed a system based on PIC16C84 and ultrasonic sensors (one
> transmitter and one receiver). The system can evaluate distances betwen
> 0.1 and 6 m and send this to a PC on serial port. If you are interested in
> code routines or schemes send me an e-mail at:

       í would be very interested in seing how you did it. It would be
perfect for a small robot I am planning to build. If you could e-mail
code and some details of the hardware I would be very grateful.

Thanks,
Alexandre Guimaraes
EraseMEalexgspam_OUTspamTakeThisOuTiis.com.br

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