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I cannot find the cable tester thread you mentioned.

If I understand the theory correctly

1.set both ports as input (tris registers to 0xFF)
2.set a single pin as output and set high
3.set rem ...

Thanks for the quick response, and the tip

As for the teacher.. not had to deal with one in nearly 35 years.

How would I test a pair of wires connected to RB0-RD0 and RB2-RD2 for continuity and or shorting?

I'm trying to understand how a pair of ports on a single mcu can determine continuity and/or shorti ...

Could you demonstrate how you'd take the results and display them on an LCD instead of just LED's?

The LED output looks so mid 2006ish...

Or perhaps how to code the S1 switch bank to use keypad ...

So far everything is working, Thanks to all that offered help to this noob. Smile

I would like to blank or initialize the circuit each time its powered up,

All digits are cleared and display Zero ...

By removing the Temperature code and working strictly on the time, I was able to correct the colon blink routine.

Bringing back in the Temperature routine, it was a simple switch of the remaining t ...

Thanks again

I'll peel back the codes until I get just the basics needed to show the colon issue as suggested.

I'll draw up a circuit showing the power input and post at the same time.

Cheers ...

PCM
A normal blinky code works fine on it.

Its the code as posted above that causing the problems.

Ttelmah
The smoothing is 12vdc through a 0.1uf and 100uf/16v before the 7805 and a 0.1uf af ...

Pin_B4 connects to a 1K resistor which is connected to a 2N3904 base pin.

2N3904 Collector connects to a 12VDC source.

2N3904 Emitter connects to 2 standard red LED's 2.2v 20ma in series.

The ...

If I comment out ALL theoutput_high(COLON);
and output_low(COLON); Pin_B4 defined as COLON will stay high and the LED's on it will remain lit.

If I return only 1 command for COLON ...

Thanks for the help Andrew.

Pull-ups have always been in place.

Removed the delay in the #int_ext routine, and so far no lock ups show on 3 of the 4 pics in question.. the 4th may just be a bad ...

Greetings,

This is a continuation to the issues I've been encountering with my clock project.

What might cause a code to stall or lock up?

I have one 16F628A thats working fine, and doing exa ...

Thanks for the tips Rohit,

I've upgraded my PicKit2 software and its hex file.

I always write down the checksum when I'm compiling and writng to the chip, just to make sure. I'll watch for it on ...

Sorry to be such a noob here but I'm still learning this stuff.

As I type this, my Sixca.com digital clock/temp project is running on the desk beside me.

I used CCS 4.069 to compile the .c code ...

If I wanted to convert this to Fahrenheit I'd need to convert the "whole number part"

//calculate the whole number part
temperature = (temp >> 4) & 0x00FF;
//co ...