Mbed_Dig_Out_Class_Reffernce.cpp

00001 #include "mbed.h"
00002  
00003 DigitalOut led1(LED1);    // Create a DigitalOut connected to the specified pin. 
00004 DigitalOut led2(LED2, 0); // Create a DigitalOut connected to the specified pin and initialize with 0
00005 DigitalOut led3(LED3);
00006 DigitalOut led4(LED4);
00007  
00008 int value = 1;
00009  
00010 int main(void) {
00011     led1.write(1);      // Set the output, specified as 0 or 1 (int)
00012     led2 = 1;           // DigitalOut & operator= (int value) - A shorthand for write() 
00013     led3 = value;       // DigitalOut & operator= (int value) - A shorthand for write()     
00014     led4 = led3;        // DigitalOut & operator= (DigitalOut &rhs) - A shorthand for write() using the assignment operator which copies the state from the DigitalOut argument.
00015  
00016     if(led2.is_connected ()) {  // Return the output setting, represented as 0 or 1 
00017         if(led2.read() )        // Return the output setting, represented as 0 or 1 (int)
00018             printf("%d %d\n", led1.read(), led2.read());    
00019     }   
00020     if(led2)                    // operator int () - A shorthand for read()
00021         printf("%d %d\n", led3.read(), led4.read());    
00022  
00023     return 0;
00024 }