Datasheet 18F – Ebook download as PDF File .pdf), Text File .txt) or read book online. PDA. View Full Version: 18F Quaduature Encoder This change will be notified in a datasheet’s () future update. PIC18FI/P Microchip Technology 8-bit Microcontrollers – MCU 16KB RAM 34 I/O datasheet, inventory, & pricing.

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That was a few weeks of hair pulling!. If you load into the period register, it will generate a PWM frequency of around Hi Bruce, Sorry if i pester you a lot. Subtract 1 for I am a bit confused. While Bert’s statement might sound like just so much talk to some I vouch for his opinion especially if you are moving to 18F chips for the first few times, I had an amazingly difficult time just getting this chip to blink the LED, owing to programmer issues, config issues.

Could you guide me how to do this. I’m trying to make a generic H-bridge for low frequencies and keep running into the wall.

This change will be notified in a datasheet’s DSB. One Pot is for Frequency, the other is for Duty.

Thanks for the explanation Henrik. Now, if I can just find more time to play with it. Yeah this one is a nifty 18f44311 PIC for sure. The fact that my frequency and duty had to be changeable made it a bit more confusing for me.


Resolution is the number of bits you have to control the duty cycle. It’s a great uC!

How to find this using equation i use this equ since it’s free running mode here. For PWM resolution use the equation below. 18c4431 yet at least. On the pin version, forget using RE3 as an input. I never managed to get QEI module going in velocity mode. I tried, and submitted a support ticket to Microchip.

Isn’t that an awesome controller? I mapped out the formulas in Excel, but I am still having trouble getting my head around the details. But,i gotta some problem with the PWM Period value.

That concept started to peek through the fog eventually.

PWM Glitch on the 18F, 18F, 18F, and 18F for very low duty cycles | Microchip

Not the PWM 18f443. To work with the 18F This should be more than enough for me to get started. I know this seems so simple, but it really does ensure you have a few needed things correct before making things more complicated.

It should be at least enough to get you started.



I’m not understanding the interaction of the frequency to the Duty. Well,it drive me crazy to know about it.

Thank you in advance. I can see that there is a dependency with the Datsheet resolution, but I’m not sure how to manage it. It sure is a cool device. But anyhow,it’s clear enough for me to understand. I was wondering if someone has done same thing in pic basic i. Here is my code.

18F Quaduature Encoder [Archive] – MEL PICBASIC Forum

Bruce, That’s a super start to a beginner like me. I haven’t played much with this particular feature. Thanks for your code although its in assembly. First is the same thing that should be first for every new pic, can you blink a led?

Equation ‘as shown in 18r4431 data sheet’ doesn’t produce the same figures for PWM resolution shown in Table Thanks a lot Bruce. I don’t have the 18F or Microchip motor control board, but this works on the 18F

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