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Recent Forum Posts

Re: Erratic LED blinking

Nice catch...

When someone shows you the stupid mistakes, its that moment you are ashamed a lot

Ioannis
Ioannis Today, 11:22

Re: Revert a port from PWM to Digital I/O

A value of 0 in the pins PPS registers sets it to be controlled by the LAT register. See bottom of table 17-2 in the datasheet.
HenrikOlsson Today, 11:08

Re: Erratic LED blinking

In the ISR you have this:

if seconds<1000 then
seconds=seconds+1
else
seconds=0
Timer0=0 'Stop timer0
TMR0H=$C1 'Load Timer 0 with start value...
HenrikOlsson Today, 10:55

Revert a port from PWM to Digital I/O

If id does matter, chip is 47K42.

After setting the registers for a PWM output and selecting, for example, RC5PPS=%%00001001, the PWM signal indeed does appear on the output port.

What about...
Ioannis Today, 09:28

Re: Erratic LED blinking

Thanks Jerson.

At the moment it looked OK to have the LCDout inside the regularly called ISR, as it updatetd the LCD often. If the freq is low enough 1-2 Hz, it updates every second the LCD...
Ioannis Yesterday, 22:28

Re: Erratic LED blinking

First thing that seems unusual to me is LCDOUT inside the ISR handler. That is something I would not do.
Secondly, there is a statement if freq < 68 then freq = 136 followed by freq = freq/68. As...
Jerson Yesterday, 03:04

Erratic LED blinking

On the uploaded YT video one can see that the LED is not blinking stable as it should.

Can anyone spot what is wrong with the code please?

That LED is driven from the in2 output port and while...
Ioannis Yesterday, 00:45

Re: Help with Pololu DRV8711 Stepper Motor Driver

OK - Problem solved. I went to Pololu and got help from their tech folks and they helped me figure this out. In a nutshell, it had to do with how I was creating the CTRL and TORQUE registers and...
Atom058 - 25th May 2025, 19:08

Re: Analog inputs on K42 chip

Managed to test it and yes. One can count from 0 up to the last port in series for the analog inputs.

Works just fine.

Ioannis
Ioannis - 25th May 2025, 14:18

Analog inputs on K42 chip

Before dealing with the registers directly, does anyone know what is the sequence, if any, on the analog inputs of the above chip?

I mean, after RA0-RA7 that corrssponds to Analog 0 to Analog 7,...
Ioannis - 25th May 2025, 14:09

How To
Microchip Tips and Tricks
by
ScaleRobotics

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Published on - 17th June 2010 17:26 Number of Views: 11807
The link below has the most information about tips and tricks using PIC micro-controllers. The attachment is a smaller version ...

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Presetting Configuration Fuses (PIC Defines) into your Program
by
Melanie

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Published on - 20th May 2010 16:27 Number of Views: 12407
1. What are the Configuration Fuses?
2. How can I preset them in my Program?
2.a. When using MeLabs default ...

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Bits, Bytes Words and Arrays
by
Melanie

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Published on - 23rd April 2010 19:39 Number of Views: 10084
1. How can I reference a BIT in a BYTE?
2. How can I reference a BIT in a WORD?
3. How can I reference a BIT in a BYTE ARRAY?
4. How can I reference a BIT in a WORD ARRAY?
5. How can I reference a BYTE in a WORD ARRAY?
...

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I’m Running Out of CodeSpace, What Can I Do?
by
Melanie

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Published on - 23rd April 2010 19:28 Number of Views: 12952
I’m Running Out of CodeSpace, What can I do?
My progam is too slow - What can I do?

Apart from the obvious and move to a faster PIC with more program memory, there’s a few little known tricks you can try.
...

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