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AVR/Clock72a.aps

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AVR/Clock72a.aws

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+<AVRWorkspace><IOSettings><CurrentRegisters/></IOSettings><part name="ATmega168"/><Files><File00000 Name="G:\!Projects\Work\Clock72a\AVR\Clock72a.c" Position="314 119 878 400" LineCol="129 0"/></Files></AVRWorkspace>

AVR/Clock72a.c

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+#define F_CPU 16000000UL
+#include <stdlib.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+
+unsigned char hour=0;
+unsigned char minute=0;
+unsigned char second=0;
+unsigned char mode=0;
+
+
+void AllOff() {
+	DDRD = 0x00;	// INPUT
+	PORTD = 0;
+	DDRB = 0x00;	// INPUT
+	PORTB = 0;
+}
+
+
+void Light(unsigned char led) {
+	unsigned char dgnd;
+	unsigned char dpos;
+	unsigned char dgndbitmask;
+	unsigned char dposbitmask;
+	unsigned char b1,b2;
+
+	dgnd=led>>3;
+	dpos=led%8;
+	if (dgnd<=dpos) dpos++;
+	dgndbitmask=1<<dgnd;
+	dposbitmask=1<<dpos;
+	b1=0;
+	b2=0;
+	if (dposbitmask==0) {b1=1; b2=1;}
+	if (dgndbitmask==0) {b1=1; b2=0;}
+
+	DDRD=dgndbitmask+dposbitmask;
+	PORTD=dposbitmask;
+	DDRB=b1;
+	PORTB=b2;
+}
+
+
+
+
+
+void BrightnessTest() {
+	unsigned char led;
+
+	for (;;) {
+
+
+		AllOff();
+		for (int i=0; i<50; i++) {
+			for (led=0; led<72; led++) {
+				Light(led);
+				_delay_ms(1);
+			}
+		}
+
+
+		AllOff();
+		DDRD=0xFF;
+		for (int i=0; i<500; i++) {
+			PORTD=0b11111110;
+			_delay_ms(1);
+			PORTD=0b11111101;
+			_delay_ms(1);
+			PORTD=0b11111011;
+			_delay_ms(1);
+			PORTD=0b11110111;
+			_delay_ms(1);
+			PORTD=0b11101111;
+			_delay_ms(1);
+			PORTD=0b11011111;
+			_delay_ms(1);
+			PORTD=0b10111111;
+			_delay_ms(1);
+			PORTD=0b01111111;
+			_delay_ms(1);
+		}
+	}
+}
+
+
+
+
+void GetTime() {
+	second++;
+	if (second>59) {
+		second=0;
+		minute++;
+		if (minute>59) {
+			minute=0;
+			hour++;
+			if (hour>23) {
+				hour=0;
+			}
+		}
+	}
+}
+
+
+void ReverseHMS() {
+	unsigned char led;
+
+	for (led=0; led<72; led++) {
+		if (led==second || led==minute || led==(60+(hour>>1))) {
+			_delay_ms(1);
+		} else {
+			Light(led);
+			_delay_ms(1);
+		}
+	}
+}
+
+
+void StandardHMS() {
+	Light(60+(hour>>1));
+	_delay_ms(1);
+	Light(minute);
+	_delay_ms(1);
+	Light(second);
+	_delay_ms(1);
+}
+
+
+
+int main (void) {
+	hour=0;
+	minute=0;
+	second=0;
+	mode=0;
+
+	//BrightnessTest();
+
+
+	for (;;) {
+
+		for (int i=0; i<25; i++) {
+			if (mode==0) StandardHMS();
+			if (mode==1) ReverseHMS();
+		}
+
+		GetTime();
+
+
+	}
+
+
+	return 1;
+}