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Recent Forum Posts

Re: Hardware I2C

I tried to use above code with 24C32 and PIC16F887 but it does not works. It stuck on this loop: while SSPCON2.0 = 1 : wend

Here's complete code:

...
CuriousOne Today, 10:53

Re: My "Library" for ST7920 Graphical displays, works fine, but...

Will post "Upgraded" version soon - it now supports individual attributes for all chars, like language, inversion, underline, striketrough. Working on variable width character support too.

9246
CuriousOne - 29th June 2022, 07:40

My "micro library" for 1602 OLED screens, using WS0010 controllers.

As usual - no includes, no ASM, does not require 18F series and so on.

These OLED displays are physically (fully) and in software (partially) compatible with standard 1602 LCD modules, based on...
CuriousOne - 28th June 2022, 07:20

Re: 125KHz HW PWM Output

your understanding is flawed and math is incorrect

Duty is Steps x 0.625% // steps = CCPR1L x4 + CCP1CON<5:4>

so:
80x0.625% = 50% <=> steps = 20x4 + 0
56x0.625% = 35% ...
richard - 28th June 2022, 01:56

Re: 125KHz HW PWM Output

Richard already covered it but it seems to have been overlooked.

The duty cycle register is 10bit wide but, as Ioannis says, the usable number of bits differs depending on the PWM period. The...
HenrikOlsson - 27th June 2022, 21:21

Re: 125KHz HW PWM Output

Hi,

That implies one needs to set the Duty Cycle to 80 to get a 4uS On / 4uS Off square wave?
(This does not make sense to me.)

Thanks,

Jay Zebryk
Zebryk - 27th June 2022, 21:08

Re: 125KHz HW PWM Output

Referencing the Mister e Calculator, it looks like the best resolution you can get is 0 to 160, where 160 will be 100% Duty Cycle.
mpgmike - 27th June 2022, 20:49

Re: 125KHz HW PWM Output

Ioannis,

Thanks for the feedback!

I have been using the attached calculator from Mister E.

9245
...
Zebryk - 27th June 2022, 18:59

Re: 125KHz HW PWM Output

It is a 10bit PWM system but the resolution of the PWM signal depends on the PWM period or frequency. Higher the frequency, the lower the resolution.

So, at 20MHz and a frequency signal of 125KHz,...
Ioannis - 27th June 2022, 14:40

AMICUS

What is Amicus18?

Amicus is a multifunction development system inspired by the popular Arduino board, however, the Amicus board uses a Microchip PIC^® microcontroller instead of an Atmel AVR^tm type.

Comprehensive documentation and a helpful and friendly support environment, make using Amicus18 an easy and enjoyable experience for beginners and seasoned programmers.

Forum Moderator Mackrakit (Dave) very kindly ported the Proton BASIC Compiler code over to PBP3 and modified the original AMicus18 docuemts for PBP3 users.

...

Read More

The Amicus18 Board

Amicus18 is an embedded system platform based on a simple open hardware design for a single-board microcontroller, with embedded I/O support and a standard programming language. A great Partner for PBP3 and Perfect for the PBP3 Experimenter.

AMICUS18 in our on-line shop

...

Read More

Companion Sheild

The entry level shield is labelled The Companion Shield. This is a PCB laid out in the pattern of a solderless breadboard. The holes are single sided, which means that components can easily be removed using solder mop braid, or a solder vacuum tool, if a mistake is made, or components need to be re-used.

The (PBP3) Companion Shield Manual iCan be downloaded from here

See the Companion Shield in our on-line shop
...

Read More

GPS Shield

The Amicus GPS shield contains a multi channel GPS receiver, as well as a 16k byte (128 kbit) serial (I2C) eeprom, and a 3 Volt, 12mm battery socket in order to maintain the receiver's built-in RTC (Real Time Clock).

Available in our on-line store

...

Read More

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