Diff: Hotboards_switches.h

Revision:

0:8e569e04a0fb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Hotboards_switches.h	Sun Feb 28 01:32:55 2016 +0000
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+/*
+  Hotboards_switches.h - Driver to read interrupts
+  Hotboards Dip-switch board (http://hotboards.org)
+  Created by Diego Perez, January 16, 2016.
+  Released into the public domain.
+*/
+#ifndef Hotboards_switches_h
+#define Hotboards_switches_h
+
+#include "mbed.h"
+
+/** Hotboards_switches class.
+ *  Used to read general purpose dip switches
+ *
+ * Example:
+ * @code
+ * #include "Hotboards_switches.h"
+ *
+ * Hotboards_switches sw( 5 );
+ *
+ * int main( void )
+ * {
+ *     for(;;){
+ *         bool var = sw.read( );
+ *         wait( 0.2 );
+ *     }
+ * }
+ * @endcode
+ */
+class Hotboards_switches
+{
+    public :
+        /** Create Hotboards_switches instance for one sw
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one sw on pin 5
+          *   Hotboards_switches sw( 5 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw0, bool close=0 );
+
+        /** Create Hotboards_switches instance for two sw
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 2 sw on pin 5 and 6
+          *   Hotboards_switches sw( 5, 6 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw1, PinName sw0, bool close=0 );
+
+        /** Create Hotboards_switches instance for three sw
+          * @param sw2 pin where the sw 2 will be read it
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 3 sw on pin 5, 6 and 7
+          *   Hotboards_switches sw( 5, 6, 7 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw2, PinName sw1, PinName sw0, bool close=0 );
+
+        /** Create Hotboards_switches instance for four sw
+          * @param sw3 pin where the sw 3 will be read it
+          * @param sw2 pin where the sw 2 will be read it
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 4 sw on pin 5, 6, 7 and 8
+          *   Hotboards_switches sw( 5, 6, 7, 8 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw3, PinName sw2, PinName sw1, PinName sw0, bool close=0 );
+
+        /** Create Hotboards_switches instance for five sw
+          * @param sw4 pin where the sw 4 will be read it
+          * @param sw3 pin where the sw 3 will be read it
+          * @param sw2 pin where the sw 2 will be read it
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 5 sw on pin 5, 6, 7, 8 and 9
+          *   Hotboards_switches sw( 5, 6, 7, 8, 9 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw4, PinName sw3, PinName sw2, PinName sw1, PinName sw0, bool close=0 );
+
+        /** Create Hotboards_switches instance for six sw
+          * @param sw5 pin where the sw 5 will be read it
+          * @param sw4 pin where the sw 4 will be read it
+          * @param sw3 pin where the sw 3 will be read it
+          * @param sw2 pin where the sw 2 will be read it
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 6 sw on pin 5, 6, 7, 8, 9 and 10
+          *   Hotboards_switches sw( 5, 6, 7, 8, 9, 10 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw5, PinName sw4, PinName sw3, PinName sw2, PinName sw1, PinName sw0, bool close=0 );
+
+        /** Create Hotboards_switches instance for seven sw
+          * @param sw6 pin where the sw 6 will be read it
+          * @param sw5 pin where the sw 5 will be read it
+          * @param sw4 pin where the sw 4 will be read it
+          * @param sw3 pin where the sw 3 will be read it
+          * @param sw2 pin where the sw 2 will be read it
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 7 sw on pin 5, 6, 7, 8, 9, 10 and 11
+          *   Hotboards_switches sw( 5, 6, 7, 8, 9, 10, 11 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw6, PinName sw5, PinName sw4, PinName sw3, PinName sw2, PinName sw1, PinName sw0, bool close=0);
+
+        /** Create Hotboards_switches instance for eight sw
+          * @param sw7 pin where the sw 7 will be read it
+          * @param sw6 pin where the sw 6 will be read it
+          * @param sw5 pin where the sw 5 will be read it
+          * @param sw4 pin where the sw 4 will be read it
+          * @param sw3 pin where the sw 3 will be read it
+          * @param sw2 pin where the sw 2 will be read it
+          * @param sw1 pin where the sw 1 will be read it
+          * @param sw0 pin where the sw 0 will be read it
+          * @param close logic level that gives you when the sw is closed
+          *
+          * Example:
+          * @code
+          *   // instance one dip-sw with 8 sw on pin 5, 6, 7, 8, 9, 10, 11 and 12
+          *   Hotboards_switches sw( 5, 6, 7, 8, 9, 10, 11, 12 );
+          * @endcode
+          */
+        Hotboards_switches( PinName sw7, PinName sw6, PinName sw5, PinName sw4, PinName sw3, PinName sw2, PinName sw1, PinName sw0, bool close=0 );
+
+        /** Read a single sw or the entire Dip-switch state (open=0 or close=1)
+          * @return sw state(s)
+          *
+          * Example:
+          * @code
+          *   // instance one sw on pin 7 and read its state (0 o 1)
+          *   Hotboards_leds sw ( 7 );
+          *   bool val = sw.read( );
+          *
+          *   // instance an 8 sw dip-sw (pin9->sw7 ..... pin2->sw0)
+          *   Hotboards_switches dipsw( 9, 8, 7, 6, 5, 4, 3, 2 );
+          *   // read the sw values (from 0 to 255)
+          *   uint8_t val = dipsw.read( );
+          *
+          *   // instance a 4 dip-sw (pin2->sw3 ..... pin5->sw0)
+          *   Hotboards_switches dipsw( 2, 3, 4, 5 );
+          *   // read sw 1 state (pin 4)
+          *   bool val1 = dipsw.write( 1 );
+          *   // read sw 0 state (pin 5)
+          *   bool val2 = dipsw.write( 0 );
+          * @endcode
+          */
+        uint8_t read( uint8_t sw=0xff );
+
+        /** Tells you if one or more sw has been change
+          * @return '1' if not changed
+          *
+          * Example:
+          * @code
+          *   // instance one sw on pin 7 and read its state (0 o 1)
+          *   Hotboards_leds sw ( 7 );
+          *   if( sw.hasItChange( ))
+          *     bool val = sw.read( );
+          *
+          *   // instance an 8 sw dip-sw (pin9->sw7 ..... pin2->sw0)
+          *   Hotboards_switches dipsw( 9, 8, 7, 6, 5, 4, 3, 2 );
+          *   // read the sw values (from 0 to 255) if it changes
+          *   if( dipsw.hasItChange( ) )
+          *     uint8_t val = dipsw.read( );
+          *
+          *   // instance a 4 dip-sw (pin2->sw3 ..... pin5->sw0)
+          *   Hotboards_switches dipsw( 2, 3, 4, 5 );
+          *   // read sw 1 state (pin 4) if it changes
+          *   if( sw.hasItChange( 1 ))
+          *     bool val = sw.read( 1 );
+          * @endcode
+          */
+        bool hasItChange( uint8_t sw=0xff );
+
+    private :
+        void begin( uint8_t sw, PinName pin );
+        bool readSw( uint8_t sw );
+        bool hasItChangeSw( uint8_t sw );
+        DigitalIn *_sw[ 8 ];
+        uint8_t _sws;
+        uint8_t _lastSwState;
+        bool _close;
+};
+
+#endif
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