{"id":85,"date":"2011-01-05T23:31:28","date_gmt":"2011-01-05T23:31:28","guid":{"rendered":"http:\/\/paulsarduino.co.uk\/?page_id=85"},"modified":"2011-01-05T23:32:32","modified_gmt":"2011-01-05T23:32:32","slug":"analogue-clock","status":"publish","type":"page","link":"https:\/\/paulsarduino.co.uk\/?page_id=85","title":{"rendered":"Analogue Clock"},"content":{"rendered":"
\r\n
#include <TimerOne.h><\/pre>\n
\/**<\/pre>\n
 Analog Clock<\/pre>\n
 Paul Cox Dec 2010<\/pre>\n
*\/<\/pre>\n
#define\u00a0\u00a0\u00a0 PI\u00a0\u00a0\u00a0\u00a0\u00a0 3.141592653589793e-06;<\/pre>\n
byte rows[8] = {9, 14, 8, 12, 1, 7, 2, 5};<\/pre>\n
byte cols[8] = {13, 3, 4, 10, 6, 11, 15, 16};<\/pre>\n
byte pins[16] = {5, 4, 3, 2, 14, 15, 16, 17, 13, 12, 11, 10, 9, 8, 7, 6};<\/pre>\n
byte screen[8] = {0, 0, 0, 0, 0, 0, 0, 0};<\/pre>\n
volatile byte screenRow = 0;<\/pre>\n
volatile byte screenCol = 0;<\/pre>\n
int iHour = 0;<\/pre>\n
int iMin = 0;<\/pre>\n
int iSec = 0;<\/pre>\n
void setup()<\/pre>\n
{<\/pre>\n
  Timer1.initialize(100);<\/pre>\n
  for (int i = 2; i <= 17; i++)<\/pre>\n
  {<\/pre>\n
     pinMode(i, OUTPUT);<\/pre>\n
  }<\/pre>\n
  Timer1.attachInterrupt(doubleBuffer);<\/pre>\n
  Serial.begin(9600);<\/pre>\n
  resetAnim();<\/pre>\n
}<\/pre>\n
void doubleBuffer()<\/pre>\n
{<\/pre>\n
  digitalWrite(translatePin(rows[screenRow]), LOW);<\/pre>\n
  digitalWrite(translatePin(cols[screenCol]), HIGH);<\/pre>\n
  screenCol++;<\/pre>\n
  if (screenCol >= 8)<\/pre>\n
  {<\/pre>\n
     screenCol = 0;<\/pre>\n
     screenRow++;<\/pre>\n
     if (screenRow >= 8)<\/pre>\n
     {<\/pre>\n
       screenRow = 0;<\/pre>\n
     }<\/pre>\n
   }<\/pre>\n
   if((screen[screenRow] >> screenCol) & B1 == B1)<\/pre>\n
   {<\/pre>\n
     digitalWrite(translatePin(rows[screenRow]), HIGH);<\/pre>\n
     digitalWrite(translatePin(cols[screenCol]), LOW);<\/pre>\n
   }<\/pre>\n
   else<\/pre>\n
   {<\/pre>\n
     digitalWrite(translatePin(rows[screenRow]), LOW);<\/pre>\n
     digitalWrite(translatePin(cols[screenCol]), HIGH);<\/pre>\n
   }<\/pre>\n
}<\/pre>\n
byte translatePin(byte original)<\/pre>\n
{<\/pre>\n
  return pins[original - 1];<\/pre>\n
}<\/pre>\n
void allOFF()<\/pre>\n
{<\/pre>\n
  for (int i = 0; i < 8; i++)<\/pre>\n
  {<\/pre>\n
     screen[i] = 0;<\/pre>\n
  }<\/pre>\n
}<\/pre>\n
void on(byte row, byte column)<\/pre>\n
{<\/pre>\n
  screen[column-1] |= (B1 << (row - 1));<\/pre>\n
}<\/pre>\n
void off(byte row, byte column)<\/pre>\n
{<\/pre>\n
  screen[column-1] &= ~(B1 << (row - 1));<\/pre>\n
}<\/pre>\n
void resetAnim()<\/pre>\n
{<\/pre>\n
  for (int i = 0; i < 8; i++)<\/pre>\n
  {<\/pre>\n
     screen[i] = B11111111;<\/pre>\n
     delay(25);<\/pre>\n
  }<\/pre>\n
  for (int i = 0; i < 8; i++)<\/pre>\n
  {<\/pre>\n
     screen[i] = B00000000;<\/pre>\n
     delay(25);<\/pre>\n
  }<\/pre>\n
}<\/pre>\n
void loop()<\/pre>\n
{<\/pre>\n
  drawClock();<\/pre>\n
  iSec++;<\/pre>\n
  if (iSec == 60)<\/pre>\n
  {<\/pre>\n
    iSec = 1;<\/pre>\n
    iMin++;<\/pre>\n
    if (iMin == 60)<\/pre>\n
    {<\/pre>\n
       iMin = 0;<\/pre>\n
       iHour++;<\/pre>\n
       if (iHour == 12)<\/pre>\n
       {<\/pre>\n
          iHour = 0;<\/pre>\n
       }<\/pre>\n
    }<\/pre>\n
  }<\/pre>\n
  delay(10);<\/pre>\n
}<\/pre>\n
void drawClock()<\/pre>\n
{<\/pre>\n
  allOFF();<\/pre>\n
  setHand(iHour,12,3);<\/pre>\n
  setHand(iMin,60,4);<\/pre>\n
  setHand(iSec,60,5);<\/pre>\n
}<\/pre>\n
\/\/ work out the pixel for a hand - val is out of a possible max val<\/pre>\n
\/\/ radius is distance from the centre<\/pre>\n
void setHand(int iVal, int iMax, int iRadius)<\/pre>\n
{<\/pre>\n
  double\u00a0 dAngle = (iVal * 2 * PI) \/ iMax;<\/pre>\n
  double\u00a0 dPosX = 4.5 + (iRadius * cos(dAngle));<\/pre>\n
  double\u00a0 dPosY = 4.5 + (iRadius * sin(dAngle));<\/pre>\n
  drawLine(5,5,constrain(round(dPosX),1,8),constrain(round(dPosY),1,8));<\/pre>\n
}<\/pre>\n
void drawLine(int x0, int y0, int x1, int y1)<\/pre>\n
{<\/pre>\n
  int\u00a0\u00a0\u00a0\u00a0\u00a0 iTemp;<\/pre>\n
  boolean\u00a0 bSteep = abs(y1 - y0) > abs(x1 - x0);<\/pre>\n
  if (bSteep)<\/pre>\n
  {<\/pre>\n
     iTemp = x0; x0 = y0; y0 = iTemp;\u00a0\u00a0\u00a0 \/\/ swap x0,y0<\/pre>\n
     iTemp = x1; x1 = y1; y1 = iTemp;\u00a0\u00a0\u00a0 \/\/ swap x1,y1<\/pre>\n
  }<\/pre>\n
  if (x0 > x1)<\/pre>\n
  {<\/pre>\n
     iTemp = x0; x0 = x1; x1 = iTemp;\u00a0\u00a0\u00a0 \/\/ swap x0,x1<\/pre>\n
     iTemp = y1; y1 = y0; y0 = iTemp;\u00a0\u00a0\u00a0 \/\/ swap y0,y1<\/pre>\n
  }<\/pre>\n
  int deltax = x1 - x0;<\/pre>\n
  int deltay = abs(y1 - y0);<\/pre>\n
  int error = deltax \/ 2;<\/pre>\n
  int ystep = ((y0 < y1) ? 1 : -1);<\/pre>\n
  int y = y0;<\/pre>\n
  int x = x0;<\/pre>\n
 \u00a0while(x <= x1)<\/pre>\n
  {\r\n    if (bSteep)\r\n    {\r\n       on(y,x);\r\n    }\r\n    else\r\n    {\r\n       on(x,y);\r\n    }\r\n    error = error - deltay;\r\n    if (error < 0)\r\n    {\r\n       y = y + ystep;\r\n       error = error + deltax;\r\n    }\r\n    x++;\r\n  }\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
#include <TimerOne.h> \/** Analog Clock Paul Cox Dec 2010 *\/ #define\u00a0\u00a0\u00a0 PI\u00a0\u00a0\u00a0\u00a0\u00a0 3.141592653589793e-06; byte rows[8] = {9, 14, 8, 12, 1, 7, 2, 5}; byte cols[8] = {13, 3, 4, 10, 6, 11, 15, 16}; byte pins[16] = {5, 4, 3, 2, 14, 15, 16, 17, 13, 12, 11, 10, 9, 8, 7, 6}; byte […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":16,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-85","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/85","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=85"}],"version-history":[{"count":3,"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/85\/revisions"}],"predecessor-version":[{"id":88,"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/85\/revisions\/88"}],"up":[{"embeddable":true,"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=\/wp\/v2\/pages\/16"}],"wp:attachment":[{"href":"https:\/\/paulsarduino.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=85"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}