Tedd OKANO
Analog clock demo using stepper motor. It\'s a demo of simultaneous 3 stepper motor operation. It gets time information from NTP server.
Dependencies: mbed NetEthApiLPC1768 NetServicesLPC1768
Revision 0:9bf213f7b780, committed 2010-11-25
- Comitter:
- okano
- Date:
- Thu Nov 25 11:22:43 2010 +0000
- Commit message:
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NetEthApiLPC1768.lib Thu Nov 25 11:22:43 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/donatien/code/NetEthApiLPC1768/#2929fcb16bbf
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/NetServicesLPC1768.lib Thu Nov 25 11:22:43 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/donatien/code/NetServicesLPC1768/#acb9b7d53771
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/StepperMotor.lib Thu Nov 25 11:22:43 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/okano/code/StepperMotor/#4beb37ae37ce
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Thu Nov 25 11:22:43 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/simon/code/TextLCD/#a53b3e2d6f1e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Nov 25 11:22:43 2010 +0000
@@ -0,0 +1,187 @@
+/** Clock demo with stepper motor + NTP
+ *
+ * Simple mbed analog clock demo with stepper motor.
+ * Time information will be get from NTP
+ * This code based on
+ * http://mbed.org/users/nucho/programs/SimpleLCDClock/5zi4y
+ * http://mbed.org/users/okano/notebook/nxp_pcf2127a-demo-code/
+ *
+ * 2010-Nov-20 @tedd_okano
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "NtpClient.h"
+#include "TextLCD.h"
+#include "StepperMotor.h"
+
+
+EthernetNetIf eth;
+NtpClient ntp;
+TextLCD lcd( p14, p15, p16, p17, p18, p19 ); // rs, rw, d0, d1, d2, d3
+Ticker updater;
+StepperMotor m_s( p21, p22, p23, p30 );
+StepperMotor m_m( p24, p25, p26, p30 );
+StepperMotor m_h( p27, p28, p29, p30 );
+AnalogIn ain( p20 );
+
+int tz_index = 4;
+int update_stop_lcd = false;
+int update_stop_hands = false;
+int resync = false;
+
+#define RESYNC_INTERVAL 1 // minutes
+
+typedef struct _tz {
+ char *name;
+ float offset;
+}
+tz;
+
+// http://wwp.greenwichmeantime.com/info/timezone.htm
+
+tz timezone[ 8 ] = {
+ { "London", 0 },
+ { "Amsterdam", 1 },
+ { "India", 5.5 },
+ { "Singapore", 8 },
+ { "Tokyo", 9 },
+ { "Hawaii", -10 },
+ { "San Francisco", -8 },
+ { "New York", -5 },
+};
+
+void clock_update( void );
+void show_clock( int h, int m, int s );
+int access_NTP( void );
+
+int main() {
+ m_h.go_angle( 180 );
+ m_m.go_angle( 180 );
+ m_s.go_angle( 180 );
+
+ lcd.cls();
+ lcd.printf( "Ethernet setting" );
+
+ EthernetErr ethErr = eth.setup();
+
+ if (ethErr) {
+ lcd.printf("Error %d in setup.\n", ethErr);
+ return -1;
+ }
+
+ if ( access_NTP() ) {
+ m_h.go_angle( 0 );
+ m_m.go_angle( 0 );
+ m_s.go_angle( 0 );
+
+ return -1;
+ }
+
+ while ( m_h.distance() | m_m.distance() | m_s.distance() )
+ wait( 0.1 );
+
+ m_h.set_home_position();
+ m_m.set_home_position();
+ m_s.set_home_position();
+
+ lcd.cls();
+
+ updater.attach(&clock_update, 1.0);
+
+ int tz_i = 0;
+ int tz_i_p = -1;
+ int unstable = 50;
+
+ while (1) {
+
+ if ( resync ) {
+ update_stop_hands = true;
+
+ m_h.go_angle( 0 );
+ m_m.go_angle( 0 );
+ m_s.go_angle( 0 );
+
+ if ( access_NTP() ) {
+ return -1;
+ }
+
+ update_stop_hands = false;
+ resync = false;
+ tz_i_p = -1;
+ }
+ tz_i = (int)( ain * 7.99 );
+
+ if ( tz_i != tz_i_p ) {
+ update_stop_lcd = true;
+ lcd.locate( 0, 1 );
+ lcd.printf( " " );
+ lcd.locate( 0, 1 );
+ lcd.printf( "%s", timezone[ tz_i ].name );
+ update_stop_lcd = false;
+
+ tz_i_p = tz_i;
+ unstable = 50;
+ } else {
+ unstable = unstable ? unstable-- : 0;
+ tz_index = unstable ? tz_i : tz_index;
+ }
+ wait( 0.1 );
+ }
+}
+
+void clock_update( void ) {
+ struct tm dt, *dtp;
+ time_t t;
+ char s[ 30 ];
+ dtp = &dt;
+
+ t = time( NULL ) + (int)(timezone[ tz_index ].offset * 3600.0);
+ dtp = localtime( &t );
+
+ if ( !(dtp->tm_min % RESYNC_INTERVAL) && !(dtp->tm_sec) )
+ resync = true;
+
+ if ( !update_stop_hands )
+ show_clock( dtp->tm_hour, dtp->tm_min, dtp->tm_sec );
+
+ if ( update_stop_lcd )
+ return;
+
+ strftime( s, 20, "%H:%M:%S", dtp );
+ lcd.locate( 0, 0 );
+ lcd.printf( "%s", s );
+
+#if 0
+ strftime( s, 20, "%Y/%b/%d(%a)", dtp );
+ lcd.locate( 0, 1 );
+ lcd.printf( "%s", s );
+#endif
+}
+
+void show_clock( int h, int m, int s ) {
+ printf( "%02d:%02d:%02d\r\n",h,m,s );
+
+ h = h % 12;
+ m_s.go_angle( -((float)s * 360.0) / 60.0 );
+ m_m.go_angle( -((float)m * 360.0) / 60.0 );
+ m_h.go_angle( -(((float)h + ((float)m / 60.0)) * 360.0) / 12.0 );
+}
+
+int access_NTP( void ) {
+ lcd.cls();
+ lcd.printf( "accessing NTP.. " );
+
+ lcd.locate( 0, 0 );
+ lcd.printf("Setup OK");
+
+ lcd.printf("Timer setting...\n");
+ Host server(IpAddr(), 123, "ntp.jst.mfeed.ad.jp");
+ ntp.setTime(server);
+
+ lcd.cls();
+
+ return 0;
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Nov 25 11:22:43 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/9114680c05da