DEBOUNCE.ppt
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This document discusses debouncing a button input and counting button presses. It describes using software to debounce a button connected to an input pin by waiting for the input to change states. It then asks to write a program that counts button presses from 0 to 7 using LEDs to display the binary value, changing with each press and using the debounce code.
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DEBOUNCE.ppt
- 1. D. Gachet
- 4. while (digitalRead(PIN_RA0)==1) {} delay_mS(5); while (digitalRead(PIN_RA0)==0) {} delay_ms(5); DEBOUNCE WITH SOFTWARE Imagine a button connected to an input PIN RA0 When button is pressed and release the voltage (INPUT) changes according to: COMPLETE TRANSITIO FROM 1 TO 0 TO 1 1->0->1 (PRESS AND RELEASE D. Gachet
- 5. WRITE A PROGRAM FOR COUNTING THE PULSES OF a BUTTON THE BINARY VALUE OF COUNTING MUST BE PRESENTED WITH LEDS AND MUST BE FROM 0 TO 7 THE VALUES TO BE OBSERVED MUST CHANGE WITH EACH PRESS OF THE BUTTON 0,1,2,3,4,5,6,7,0,1,2… IN BINARY FORM USE THE DEBOUNCE CODE PRESENTED BEFORE D. Gachet