main.cpp

00001 #include "mbed.h"
00002 
00003 // for debug
00004 DigitalOut leds[]  = {
00005     DigitalOut( LED1 ),
00006     DigitalOut( LED2 ),
00007     DigitalOut( LED3 ),
00008     DigitalOut( LED4 )
00009 };
00010 Serial pc( USBTX, USBRX );
00011 
00012 //TA7774PG
00013 class Stepper {
00014 public:
00015     Stepper(PinName in_a, PinName in_b, PinName pws) : _in_a(in_a), _in_b(in_b), _pws(pws) {
00016         _in_a = 0;
00017         _in_b = 0;
00018         _pws = 0;
00019         _next_a = true;
00020     }
00021     void next() {
00022         //_pws = 0;
00023         //wait(1.0); // for pws
00024         if( _next_a ) {
00025             _in_a = !_in_a;
00026         } else {
00027             _in_b = !_in_b;
00028         }
00029         //_pws = 1;
00030         _next_a = !_next_a;
00031     }
00032 private:
00033     DigitalOut _in_a;
00034     DigitalOut _in_b;
00035     DigitalOut _pws;
00036     bool       _next_a;
00037 };
00038 
00039 Ticker ti;
00040 Stepper st( p23, p22, p21 );
00041 
00042 // 12hour = 720min to 360 step (mode 1)
00043 const float DAILY_INTERVAL = 120.0;
00044 // 1hour = 60min to 720 step (mode 2)
00045 const float HOURLY_INTERVAL = 10.0;
00046 // for adjust (mode 3)
00047 const float ADJUST_INTERVAL = 1.0;
00048 
00049 // switch mode
00050 DigitalIn sw_a(p24, PullUp);
00051 DigitalIn sw_b(p25, PullUp);
00052 int mode = 1;
00053 
00054 int main() {
00055     ti.attach(&st, &Stepper::next, DAILY_INTERVAL);
00056     wait(2.0);
00057 //    for( int i=0; i < 360; i++ ){
00058 //        leds[0] = !leds[0];
00059 //        st.next();
00060 //        wait(2.0);
00061 //    }
00062     
00063     while ( true ) {
00064         int previous_mode = mode;
00065         if ( sw_a && sw_b ) {
00066             mode = 1;
00067         } else if ( sw_a ) {
00068             mode = 2;
00069         } else {
00070             mode = 3;
00071         }
00072         if ( previous_mode != mode ) {
00073             ti.detach();
00074             switch ( mode ) {
00075                 case 1:
00076                     ti.attach(&st, &Stepper::next, DAILY_INTERVAL);
00077                     break;
00078                 case 2:
00079                     ti.attach(&st, &Stepper::next, HOURLY_INTERVAL);
00080                     break;
00081                 case 3:
00082                     ti.attach(&st, &Stepper::next, ADJUST_INTERVAL);
00083                     break;
00084             }
00085         }
00086         leds[3] = !leds[3];
00087         wait(1.0);
00088     }
00089 }