Bチーム
This is a very tiny library which counts DigitalIn rising , using "Ticker" interrupts.
Fork of
Pswitch_Lib
by 
Kero Sunutte
Revision 0:0bc10e1c0685, committed 2010-12-23
- Comitter:
- MBE13170
- Date:
- Thu Dec 23 07:46:37 2010 +0000
- Child:
- 1:a0eb75ae437f
- Commit message:
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Pswitch.cpp Thu Dec 23 07:46:37 2010 +0000
@@ -0,0 +1,52 @@
+
+
+#include "Pswitch.h"
+ #include "mbed.h"
+
+ /*
+ * Constructor
+ */
+ Pswitch::Pswitch(PinName in)
+ : _in(in) {
+
+ // reset all the flags and counters
+ _samples = 0;
+ _output = 0;
+ _output_last = 0;
+ _rising_flag = 0;
+
+ // Attach ticker
+ _ticker.attach(this, &Pswitch::_sample, 0.005);
+ }
+
+ void Pswitch::_sample() {
+
+
+ _output_last = _output;
+ _output = _in;
+ if (!_output && _output_last)
+ {
+ _rising_flag++;
+ }
+
+}
+
+
+
+
+ // return number of rising edges
+ int Pswitch::count(void) {
+ int return_value = _rising_flag;
+ _rising_flag = 0;
+ return(return_value);
+ }
+
+ // return the debounced status
+ int Pswitch::read(void) {
+ return(_in);
+ }
+
+ // shorthand for read()
+ Pswitch::operator int() {
+ return read();
+ }
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Pswitch.h Thu Dec 23 07:46:37 2010 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+
+ class Pswitch {
+ public:
+ Pswitch(PinName in);
+
+ int read (void);
+ int count (void);
+ operator int();
+
+ private :
+ // objects
+ DigitalIn _in;
+ Ticker _ticker;
+
+ // function to take a sample, and update flags
+ void _sample(void);
+
+ // counters and flags
+ int _samples;
+ int _output;
+ int _output_last;
+ int _rising_flag;
+
+ };
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Dec 23 07:46:37 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/20a79241b4a0