Search found 14 matches

Hi,

Solved the problem.

The declaration of the variable 'freq' was before the void main() and I don't know why it's not working correctly.
When I declared it on the main program everything star ...

Thanks Ttelmah,

But I forgot one zero, :P

500000 / ( 100 * 8) = 625

Your suggestion for the PR5 how can I use it on a 16 bit register?
Because what I know that is used to define a name to ...

Hello PCM programmer,

Today I run some more test and figure out that the problem is not on the timer counter but on the values I entered on the PR5 register.

I did the following, for a frequency ...

Hello,

The PIC is 18F4431.

T is a int16.
The rest I will try. Have any more idea why is rolling over at those values?

Regards

Hello,

I'm having some problems with the Timer5.

I was working with 8Mhz internal clock and receiving from modbus the value for the period for the timer5, and I was able to have 8hz minimal freq ...

Hi,

I've been reading and came across these image that controls the bridge like I want.

time base value?

Thanks all

PCM Programmer,

I've been reading the PIC18F4431, and for what I read the Power PWM module is synchronous.

So what I want to do can not be done directly. I manage to do it with some signal manip ...

Thanks again PCM Programmer,

The code that you post works fine Very Happy

and I've made some changes.

#include <18F4431.h>
#fuses INTRC_IO,NOWDT,PUT,BROWNOUT,NOLVP
#use delay(clock=8M ...

Thank you PCM Programmer

I've tried the change that you mentioned but still no signal.
Is the rest correct. The period is well configured, because I've had some difficulties on understanding the & ...

Hello everyone,

I'm trying to generate 4 pwm signal to control a H-bridge, but I want them to be center alignment to create a dead time to the bridge output by making the time of one of the igbt a ...

Thank you Mike.
Answering you question, right now the pulse is 50us but I want a minimum of 10us or less.
The problem with no value on the ADC reading was because of the PWM. I came up with a way t ...

I successfully implemented the dual ADC reading. But as I mentioned in the last post I'm trying to read the current and voltage in my load. They are pulses, a representation of my PWM signal. Because ...

Thank you PCM Programmer.
Yes I want to read the current and voltage in my load sync with the PWM signal. But as my PWM signal has some restriction. I'm generating a single shot in a interrupt routi ...

Hello, I'm testing this compiler and one of the things I would like to do is multiple analogue readings.
I'm using PIC18F4431 with compiler version 4.093. With it I'm generating a PWM pulse and I ...