Before git init

NTP/Core/Src/clock.c

@@ -0,0 +1,91 @@
+#include "clock.h"
+
+const char *number[12] =
+{ "6", "5", "4", "3", "2", "1", "12", "11", "10", "9", "8", "7" };
+
+const char *days[7] =
+{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
+const char *months[12] =
+{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+
+const uint16_t offset[] = {
+		3, 10,	//6
+		6, 8,	//5
+		6, 8,	//4
+		6, 4,	//3
+		6, 0,	//2
+		6, 2,	//1
+		6, 0,	//12
+		0, 0,	//11
+		0, 0,	//10
+		0, 5,	//9
+		0, 10,	//8
+		0, 12	//7
+};
+
+void Clock_Draw_Outline(uint16_t xCenter, uint16_t yCenter, double radius)
+{
+	uint16_t x1, y1, x2, y2;
+	double angle;
+	// draw the outline of the clock
+	BSP_LCD_DrawCircle(xCenter, yCenter, 2);
+	// draw minute's ticks (60 lines)
+	for (int j = 1; j <= 60; j++)
+	{
+		angle = j * 6;
+		angle = angle * M_PI / 180;
+
+		x1 = xCenter + (sin(angle) * radius);
+		y1 = yCenter + (cos(angle) * radius);
+		x2 = xCenter + (sin(angle) * (radius));
+		y2 = yCenter + (cos(angle) * (radius));
+		BSP_LCD_DrawLine(x1, y1, x2, y2);
+	}
+	// draw hour's ticks (12 lines)
+	for (int j = 0; j < 12; j++)
+	{
+		angle = j * 30 * M_PI / 180;
+
+		x1 = xCenter + (sin(angle) * radius);
+		y1 = yCenter + (cos(angle) * radius);
+		x2 = xCenter + (sin(angle) * (radius - 4));
+		y2 = yCenter + (cos(angle) * (radius - 4));
+		BSP_LCD_DrawLine(x1, y1, x2, y2);
+		// draw hour digits(12 lines)
+		x2 = xCenter + (sin(angle) * (radius - 8));
+		y2 = yCenter + (cos(angle) * (radius - 8));
+		BSP_LCD_DisplayStringAt(x2 - offset[2*j], y2 - offset[2*j+1], (uint8_t*) number[j], LEFT_MODE);
+	}
+}
+
+void Clock_Draw_Hands(uint16_t xCenter, uint16_t yCenter, double radius,
+		uint8_t hours, uint8_t minutes, uint8_t seconds)
+{
+	uint16_t x2, y2;
+	double angle;
+	angle = seconds * 6;
+	angle = angle * M_PI / 180;
+	x2 = xCenter + (sin(angle) * (radius - 30));
+	y2 = yCenter - (cos(angle) * (radius - 30));
+	BSP_LCD_DrawLine(xCenter, yCenter, x2, y2);
+
+	angle = minutes * 6 + (seconds / 10);
+	angle = angle * M_PI / 180;
+	x2 = xCenter + (sin(angle) * (radius - 50));
+	y2 = yCenter - (cos(angle) * (radius - 50));
+	BSP_LCD_DrawLine(xCenter, yCenter, x2, y2);
+
+	angle = hours * 30 + ((minutes / 12) * 6);
+	angle = angle * M_PI / 180;
+	x2 = xCenter + (sin(angle) * (radius / 2));
+	y2 = yCenter - (cos(angle) * (radius / 2));
+	BSP_LCD_DrawLine(xCenter, yCenter, x2, y2);
+}
+
+void Clock_Write_Date(uint16_t xCenter, uint16_t yCenter, uint8_t Wday, uint8_t Day, uint8_t Month, uint16_t Year)
+{
+	char buff[16];
+	memset(buff, 0, 16);
+	sprintf(buff, "%s %2u %s %4u", days[Wday - 1], Day, months[Month - 1], Year);
+	BSP_LCD_DisplayStringAt(xCenter, yCenter, (uint8_t*)buff, CENTER_MODE);
+}