Sample code on how to pass an optional function pointer to a library and set a single pin to either InterruptIn or DigitalOut.

Dependencies:   mbed

This code can be used as a template to create a library where a single pin can be set to either InterruptIn or DigitalOut.
There are 3 ways to instantiate the library (example using the KL25Z board):

// 2 parameters : Only SDA and SCL are declared.
DemoClass sensor(PTE0, PTE1);

// 3 parameters : SDA, SCL and a DigitalOut are declared.
DemoClass sensor(PTE0, PTE1, PTD7);               // SDA, SCL

// 4 parameters : SDA, SCL, InterruptIn and a user function pointer are declared.
DemoClass sensor(PTE0, PTE1, PTD7, &sensor_irq);       // ISR mode

Notice that the 3rd pin declaration switches from DigitalOut to InterruptIn when the user function pointer is added.

Committer:
frankvnk
Date:
Sat May 03 16:15:38 2014 +0000
Revision:
0:0a6e921b085b
Initial release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
frankvnk 0:0a6e921b085b 1 http://mbed.org/users/mbed_official/code/mbed/builds/8e73be2a2ac1