Jon Fuge / Mbed 2 deprecated OddExample2

Simple training demonstration to show the use of union and structure

Dependencies:   USBDevice mbed

Fork of OddExample1 by Jon Fuge

main.cpp@10:6c0cd51df4df, 2013-11-26 (annotated)

Committer:
jf1452
Date:
Tue Nov 26 14:53:06 2013 +0000
Revision:
10:6c0cd51df4df
Parent:
9:0add51bbe65d 
Odd Example 2 using union and structure

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jf1452 1:d9da28105bef 1 /*******************************************************************************
jf1452 9:0add51bbe65d 2 * This program demonstrates determines if a number is odd or even *
jf1452 10:6c0cd51df4df 3 * Jon Fuge V1.0 26/11/2013 First issue of code *
jf1452 1:d9da28105bef 4 *******************************************************************************/
jf1452 2:db81cad8cb64 5 #include "mbed.h"
jf1452 8:c0d351fc572f 6 #include "USBSerial.h"
jf1452 10:6c0cd51df4df 7
jf1452 10:6c0cd51df4df 8 union byte // Define new type “BYTE”
jf1452 10:6c0cd51df4df 9 {
jf1452 10:6c0cd51df4df 10 char Byte; // Use this to map a byte
jf1452 10:6c0cd51df4df 11 struct {
jf1452 10:6c0cd51df4df 12 char Odd: 1; // this is the same as Bit0
jf1452 10:6c0cd51df4df 13 char Others: 7; // Just pad the rest of the bits
jf1452 10:6c0cd51df4df 14 };
jf1452 10:6c0cd51df4df 15 };
jf1452 10:6c0cd51df4df 16
jf1452 10:6c0cd51df4df 17 USBSerial serial; // Virtual serial port over USB. Use Teraterm as the interface
jf1452 6:5f4be4b8db14 18
dan 0:7dec7e9ac085 19 int main() {
jf1452 10:6c0cd51df4df 20 byte cMyNumber; // Declare variable cMyNumber
jf1452 10:6c0cd51df4df 21 cMyNumber.Byte = 53; // Set it to an odd number
jf1452 8:c0d351fc572f 22
jf1452 8:c0d351fc572f 23 wait (10); // Wait 10 seconds to connect port
jf1452 5:eb5c6ae5938b 24
jf1452 10:6c0cd51df4df 25 if (cMyNumber.Odd == 1)
jf1452 10:6c0cd51df4df 26 serial.printf("%i is odd\n\r", cMyNumber.Byte);
jf1452 9:0add51bbe65d 27 else
jf1452 10:6c0cd51df4df 28 serial.printf("%i is even\n\r", cMyNumber.Byte);
jf1452 6:5f4be4b8db14 29
jf1452 8:c0d351fc572f 30 for(;;) {} // Loop forever
jf1452 3:0f80147842c2 31 }