Search found 12 matches

It looks like you just want to use this PIC as if it's an 18F452.
In that case, use the fuses as shown in my test program.

Ok.. so the 18F452 is 4550 sans the USB Peripheral ?

Is the PLL only ...

Here is a test program that runs the 18F4550 at 20 MHz, with a 20 MHz
crystal. I tested this with PCH vs. 3.249 on a PicDem2-Plus board.

#include <18F4550.h>
#fuses HS, NOWDT, PUT, BROW ...

Hi

I am using a PIC as a control unit to switch a few HBridges on and off according to an schedule algorithm.

The initiation of the schedule is triggered by pressing of 4 switches on a switch bo ...

What is the difference between HS and HSPLL ??

Is it that the PIC4550 does not support XTALs greater than 10Mhz .. will it support a 20Mhz XTAL ?

Also, as you can see, I am changing the PWM fre ...

Hi

This is my first stint using PIC18F4550 and after programming it, the proto board is behaving akwardly now, specially some timing issues seem to be there.

This program outputs PWM freq from 3 ...

It's getting scary ! Let's move some arse here Smile

says the guy who has contributed 6 posts to the forum and other than a set of requirements hasn't provided any useful info to this thread.
you ...

Let's see, what do we have here..

Here's what I think we should start with (and fast) :

1. Preferably full duplex serial point-to-point communication with NO FLOW CONTROL over RS422

2. A nice ...

My thoughts exactly, kender

Not only would event/interrupt based handling be easier, but it would be efficient too.. but anyways, that does NOT change our protocol too much, just that the PIC will ...

Hello mates

I am quite amazed with the amount of ideas coming up, but remember, it's I who is going to do/start the coding ;)

So currently, altough I will keep the framework ready for future exp ...

Excellent !

A reusable library will be usable by everybody. I just can't tell you how many PIC programmers scramble here and there and spam forums just to do some basic, reliable serial communicati ...

Thanks for the great links. I DONOT expect people to write code for me, but rather point me to code they have already written or seen..

The PIC will interrupt the PC when is has some data to send. ...

Hi

I want to start a project to implement a reliable Serial communications library meant to exchange data mainly between a PC and a PIC (877A) over a RS422 link over long distances.

Hence, I nee ...