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/* Project: Unit 01 - IO |
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File: unit_01_10_ButtonFunction.c |
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Objective: Button Library - The Button Library provides routines for |
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detecting button presses and debouncing (eliminating the |
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influence of contact flickering upon pressing a button). |
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Note: Unable Button on mikkoc Pro for PIC's Library Manager |
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Prototype: unsigned short Button(unsigned short *port, |
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unsigned short pin, |
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unsigned short time, |
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unsigned short active_state); |
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Author: microgenios, edited by J3 |
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Hardware: Development Boards (OPTIONS): |
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PicGenios: PIC18F4520 chip ( https://loja.microgenios.com.br/produto/kit-picgenios-pic18f4520-com-gravador-usb-microicd-licen-a-compilador-mikroc-pro-for-pic/23507 ) |
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EasyPIC™ 7: PIC18F45K22 chip ( https://www.microchip.com/Developmenttools/ProductDetails/TMIK013 ) |
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Software: Development Programmer/Debugger: |
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PICkit™ 2 ( http://ww1.microchip.com/downloads/en/DeviceDoc/PICkit%202%20v2.61.00%20Setup%20A.zip ) |
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mikroProg suite for PIC ( https://www.mikroe.com/blog/mikroprog-suite-for-pic-version-2-3-1-released ) |
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PDL: is a free-format English-like text that describes the flow of control and data in a |
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program. PDL is not a programming language. It is a collection of some keywords that enable |
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a programmer to describe the operation of a program in a stepwise and logical manner: |
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BEGIN |
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Define TRUE as 1 |
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Pre-compilation Directives (#ifdef -chip options- #else #endif) |
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Configure PORTB pin 0 as digital input |
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Configure PORTD pin 0 as digital output |
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DO FOREVER |
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IF button is pressed THEN |
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Toggle the LED |
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Wait .3s |
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ENDDO |
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END |
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Date: Nov 2019 |
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*/ |
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#define TRUE 1 |
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void main() { |
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// Pre-compilation Directives (#ifdef #else #endif) |
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#ifdef P18F45K22 // For PIC18F45K22 |
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ANSELD = 0; // Config PORTD as digital, desabling ADC |
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ANSELB = 0; // Config PORTB as digital |
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INTCON2.RBPU = 0; // RBPU is negated, so zero unable it;) serve as general key for all PORTB pull-ups resistors |
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WPUB.WPUB0 = 1; // Unable spscific for the button connected to it (only on PIC18F45K22) |
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#else // For PIC18F4520 |
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INTCON2.RBPU = 0; // All PORTB pull-ups resistors are unable as zero (RBPU is negated:) |
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ADCON1 |= 0X0F; // Config all ADC's pins as digital on PIC18F4520 |
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#endif |
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TRISB.RB0 = 1; // BUTTON: Config PORTB.RB0 as input |
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PORTB.RB0 = 1; // Optional, the MCU do it automatically ;) |
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// Config all PORTB as logic HIGH |
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TRISD = 0; // LEDs: Config PORTB.RB0 as output |
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PORTD = 0; // Optional, the MCU do it automatically ;) |
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// Config all PORTB as logic LOW |
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while(TRUE) // Endless loop |
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{ |
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if(Button(&PORTB, 0, 100, 0)) |
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{ |
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PORTD.RD0 ^= 1; // Toggle the LED |
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} |
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} |
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} |
