Charles Tritt / Mbed OS 21_ForShift2_v5

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main.cpp@110:b148a36c9833, 2021-10-11 (annotated)

Committer:
CSTritt
Date:
Mon Oct 11 01:27:18 2021 +0000
Revision:
110:b148a36c9833
Parent:
108:eee3167b25b4
Child:
111:459fa5199128
Initial Mbed v. 5 version (using sleep_for).

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CSTritt 107:61b9c99a4e27 1 /*
CSTritt 110:b148a36c9833 2 Project: ForLoopIteration
CSTritt 110:b148a36c9833 3 File: main.cpp
CSTritt 110:b148a36c9833 4
CSTritt 110:b148a36c9833 5 Demonstrates the use of a for() loop. Lights indivdiual LEDs of a bargraph
CSTritt 110:b148a36c9833 6 display in sequence, then in reverse order.
CSTritt 110:b148a36c9833 7
CSTritt 110:b148a36c9833 8 The circuit:
CSTritt 110:b148a36c9833 9
CSTritt 110:b148a36c9833 10 Bargraph LEDs from pins D3 through D12 to ground via 330 Ohm resistors.
CSTritt 110:b148a36c9833 11
CSTritt 110:b148a36c9833 12 Created 2006 by David A. Mellis
CSTritt 110:b148a36c9833 13 Modified 2011 by Tom Igoe
CSTritt 110:b148a36c9833 14 Modified for Nucleo / mbed 12 Aug 2017 by Sheila Ross
CSTritt 110:b148a36c9833 15 Modified by C. S. Tritt 9/21/17 and 10/10/21 (v. 1.1, untested)
CSTritt 110:b148a36c9833 16
CSTritt 110:b148a36c9833 17 This example code is in the public domain.
CSTritt 107:61b9c99a4e27 18 */
CSTritt 110:b148a36c9833 19
Jonathan Austin 0:2757d7abb7d9 20 #include "mbed.h"
CSTritt 110:b148a36c9833 21
CSTritt 110:b148a36c9833 22 const int DELAY = 100;; // mS wait time.
CSTritt 110:b148a36c9833 23
CSTritt 110:b148a36c9833 24 BusOut bar_graph(D3,D4,D5,D6,D7,D8,D9,D10,D11,D12);
CSTritt 110:b148a36c9833 25
CSTritt 108:eee3167b25b4 26 int main() {
CSTritt 110:b148a36c9833 27
CSTritt 110:b148a36c9833 28 while(true) { // Keep the lights going back and forth forever.
CSTritt 110:b148a36c9833 29
CSTritt 110:b148a36c9833 30 // Lighted bar will shift from 0 to 9 places.
CSTritt 110:b148a36c9833 31 for(int shift = 0; shift < 10; shift++) {
CSTritt 110:b148a36c9833 32 bar_graph = (1 << shift); // A 1 shifted over "shift" places.
CSTritt 110:b148a36c9833 33 ThisThread::sleep_for(DELAY); // Pause
CSTritt 110:b148a36c9833 34 }
CSTritt 110:b148a36c9833 35
CSTritt 110:b148a36c9833 36 // Now shift down from 9 to 0 places.
CSTritt 110:b148a36c9833 37 for(int shift = 9; shift >= 0; shift--) {
CSTritt 110:b148a36c9833 38 bar_graph = (1 << shift); // A 1 shifted over "shift" places.
CSTritt 110:b148a36c9833 39 ThisThread::sleep_for(DELAY); // Pause
CSTritt 108:eee3167b25b4 40 }
CSTritt 108:eee3167b25b4 41 }
CSTritt 108:eee3167b25b4 42 }