Charles Tritt / Mbed OS 21_BitTests_v5

This program is intended for use exploring bitwise operator. It also demonstrates the use of the 8-bit unsigned char type and using printf to display integer values in various number bases.

main.cpp@108:61d009929518, 2021-10-01 (annotated)

Committer:
CSTritt
Date:
Fri Oct 01 18:18:49 2021 +0000
Revision:
108:61d009929518
Parent:
107:e7084caca83a 
This program is intended for use exploring bitwise operator. It also demonstrates the use of the 8-bit unsigned char type and using printf to display integer values in various number bases.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CSTritt 107:e7084caca83a 1 /*
CSTritt 107:e7084caca83a 2 Project: 21_BitTests_v5
CSTritt 107:e7084caca83a 3 File: main.cpp
CSTritt 107:e7084caca83a 4
CSTritt 108:61d009929518 5 This program is intended for use exploring bitwise operator. It also
CSTritt 108:61d009929518 6 demonstrates the use of the 8-bit unsigned char type and using printf to
CSTritt 108:61d009929518 7 display integer values in various number bases.
CSTritt 107:e7084caca83a 8
CSTritt 107:e7084caca83a 9 Last modified 9/30/21 by C. S. Tritt (v. 1.0)
CSTritt 107:e7084caca83a 10 */
Jonathan Austin 0:2757d7abb7d9 11 #include "mbed.h"
Jonathan Austin 0:2757d7abb7d9 12
CSTritt 107:e7084caca83a 13 // Pulse durations.
CSTritt 107:e7084caca83a 14 const int SPULSE = 500;
CSTritt 107:e7084caca83a 15 const int LPULSE = 1000;
Jonathan Austin 0:2757d7abb7d9 16
CSTritt 107:e7084caca83a 17 // Construct a transmit only serial connection over our USB.
CSTritt 107:e7084caca83a 18 Serial pc(USBTX, NC, 9600); // Serial channel to PC.
CSTritt 107:e7084caca83a 19 // Construct a 8-bit BusOut bargraph display.
CSTritt 107:e7084caca83a 20 BusOut barGraph(D2, D3, D4, D5, D6, D7, D8, D9); // The display.
CSTritt 107:e7084caca83a 21
mbed_official 82:abf1b1785bd7 22 int main()
mbed_official 82:abf1b1785bd7 23 {
CSTritt 107:e7084caca83a 24 while (true) { // Main loop.
CSTritt 107:e7084caca83a 25 // Set some values.
CSTritt 107:e7084caca83a 26 unsigned char myIntA = 0b10101010; // Binary. 170_10.
CSTritt 107:e7084caca83a 27 unsigned char myIntB = 0x3E; // Hex. 62_10.
CSTritt 107:e7084caca83a 28 unsigned char myIntC = 077; // Octal, 63_10.
CSTritt 107:e7084caca83a 29
CSTritt 107:e7084caca83a 30 // Do a bitwise operation.
CSTritt 107:e7084caca83a 31 unsigned char myIntD = myIntA | myIntB;
CSTritt 107:e7084caca83a 32
CSTritt 107:e7084caca83a 33 // Send output to PC and bargraph.
CSTritt 107:e7084caca83a 34 pc.printf("myIntA = %d (base 10).\n", myIntA);
CSTritt 107:e7084caca83a 35 barGraph = myIntA;
CSTritt 107:e7084caca83a 36 ThisThread::sleep_for(SPULSE);
CSTritt 107:e7084caca83a 37
CSTritt 107:e7084caca83a 38 pc.printf("myIntB = %X (Hexadecimal).\n", myIntB);
CSTritt 107:e7084caca83a 39 barGraph = myIntB;
CSTritt 107:e7084caca83a 40 ThisThread::sleep_for(SPULSE);
CSTritt 107:e7084caca83a 41
CSTritt 107:e7084caca83a 42 pc.printf("myIntC = %o (Octal).\n", myIntC);
CSTritt 107:e7084caca83a 43 barGraph = myIntC;
CSTritt 107:e7084caca83a 44 ThisThread::sleep_for(SPULSE);
CSTritt 107:e7084caca83a 45
CSTritt 107:e7084caca83a 46 pc.printf("myIntD = %X (Hexadecimal).\n", myIntD);
CSTritt 107:e7084caca83a 47 barGraph = myIntD;
CSTritt 107:e7084caca83a 48 ThisThread::sleep_for(LPULSE);
CSTritt 107:e7084caca83a 49 pc.printf("Repeating...\n\n");
Jonathan Austin 0:2757d7abb7d9 50 }
CSTritt 107:e7084caca83a 51 }