readme.txt

PIC_Hi-Tech_C_Mike_Pearces_12C509_logic_gate_replacement源码

/**********************************************************************
*                        Liquid Nitrogen Filler
*
*                    Michael Pearce 26 March 2001
*
* Electronics Workshop, Chemistry Department, University of Canterbury
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Processors Used: PIC12C508/509
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Disclaimer:
The following code has been released so that someone may possibly find
something useful in them. The Author and the company he works for takes
no responsibilty for the use of this code or any damage that may be
caused by using part of all of this code.
***********************************************************************
Overview:
This project was a really quick replacement for an old logic gate
system that had faulted and could not be fixed.
It is a simple program that uses nested if{}else{} statements to do
a BETTER job than the original Logic did, by the addition of some
error trapping and a timeout delay for safety reasons (and to save money
because Liquid Nitrogen is not cheap).

This project was made on vero board and hardwired in place of the Old
Logic that it replaced, hence no diagrams avaliable.

Here is a list of the files:

N_FILL.C
DELAY.H
DELAY.C

*************************** N_FILL.C **************************
USES: delay.h, delay.c

DESCRIPTION:
Checks the level sensor indicators and determines if the fill valve
should be opened or closed. Also If filling, has programmed timeout
to stop the possibility of OVERFLOW occuring - needs a power off
reset to re-enable the system (For Safety).

************************* DELAY.H *******************************
Modified version of the delay.h routines supplied by HiTech PICC

************************* DELAY.C *******************************
Modified version of the delay.h routines supplied by HiTech PICC

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