/* - RECEIVE COMMAND: 'c' 'l' 'o' 'c' 'k' minute second - AFTER VALID COMMAND THE SYSTEM UPDATE THE NEW TIME AND ACTIVATE THE COUNTER - AFTER COUNT WAIT FOR THE NEXT VALID COMMAND */ //Pin connected to ST_CP of 74HC595 #include "WProgram.h" void setup(); void loop(); void start_counter(); void clockOutput(); void shiftOut(int myDataPin, int myClockPin, byte myDataOut); void blinkAll_4Bytes(int n, int d); void black_out(); void blink_black_out(int n, int d); int latchPin = 8; //Pin connected to SH_CP of 74HC595 int clockPin = 12; ////Pin connected to DS of 74HC595 int dataPin = 11; int second=59, minute=14; int stop_counter = 0; int bytesread = 0; //holders for infromation you're going to pass to shifting function byte data; byte dataArrayseg1[10]; byte dataArrayseg2[10]; byte dataArrayseg3[10]; byte dataArrayseg4[10]; byte puntos[10]; void setup() { //set pins to output because they are addressed in the main loop pinMode(latchPin, OUTPUT); Serial.begin(57600); //Arduino doesn't seem to have a way to write binary straight into the code //so these values are in HEX. Decimal would have been fine, too. dataArrayseg1[0] = B01101111; dataArrayseg1[1] = B00000011; dataArrayseg1[2] = B01011101; dataArrayseg1[3] = B01010111; dataArrayseg1[4] = B00110011; dataArrayseg1[5] = B01110110; dataArrayseg1[6] = B01111110; dataArrayseg1[7] = B01000011; dataArrayseg1[8] = B01111111; dataArrayseg1[9] = B01110111; //Arduino doesn't seem to have a way to write binary straight into the code //so these values are in HEX. Decimal would have been fine, too. puntos[0] = B00000000; puntos[1] = B00000001; puntos[2] = B00000000; puntos[3] = B00000001; puntos[4] = B00000000; puntos[5] = B00000001; puntos[6] = B00000000; puntos[7] = B00000001; puntos[8] = B00000000; puntos[9] = B00000001; dataArrayseg2[0] = B11011110; dataArrayseg2[1] = B00000110; dataArrayseg2[2] = B10111010; dataArrayseg2[3] = B10101110; dataArrayseg2[4] = B01100110; dataArrayseg2[5] = B11101100; dataArrayseg2[6] = B11111100; dataArrayseg2[7] = B10000110; dataArrayseg2[8] = B11111110; dataArrayseg2[9] = B11101110; dataArrayseg3[0] = B01111011; dataArrayseg3[1] = B01100000; dataArrayseg3[2] = B01011101; dataArrayseg3[3] = B01110101; dataArrayseg3[4] = B01100110; dataArrayseg3[5] = B00110111; dataArrayseg3[6] = B00111111; dataArrayseg3[7] = B01100001; dataArrayseg3[8] = B01111111; dataArrayseg3[9] = B01110111; dataArrayseg4[0] = B01111011; dataArrayseg4[1] = B01100000; dataArrayseg4[2] = B01011101; dataArrayseg4[3] = B01110101; dataArrayseg4[4] = B01100110; dataArrayseg4[5] = B00110111; dataArrayseg4[6] = B00111111; dataArrayseg4[7] = B01100001; dataArrayseg4[8] = B01111111; dataArrayseg4[9] = B01110111; blinkAll_4Bytes(2,500); } void loop() { static unsigned long lastTick = 0; // set up a local variable to hold the last time we moved forward one second // Serial input if(Serial.available() > 0) { if(Serial.read() == 'c') { // check for header bytesread = 0; Serial.println("detectada c"); while (bytesread < 6) { // read c lock minute second if( Serial.available() > 0) { int incomingByte = Serial.read(); if( (incomingByte == 'l') && (bytesread == 0) ) { bytesread = 1; Serial.println("detectada l"); } else if( (incomingByte == 'o') && (bytesread == 1) ) { bytesread = 2; Serial.println("detectada o"); } else if( (incomingByte == 'c') && (bytesread == 2) ) { bytesread = 3; Serial.println("detectada c"); } else if( (incomingByte == 'k') && (bytesread == 3) ) { bytesread = 4; Serial.println("detectada k"); } else if( bytesread == 4 ) { minute = incomingByte; bytesread = 5; Serial.print("detectado minute "); Serial.println(minute); } else if( bytesread == 5 ) { second = incomingByte; bytesread = 6; Serial.print("detectado second "); Serial.println(second); stop_counter = 0; } else bytesread = 6; } } } Serial.flush(); } // move forward one second every 1000 milliseconds if ( (millis() - lastTick >= 1000) && stop_counter == 0 ) { lastTick = millis(); clockOutput(); //Serial.print("second "); //Serial.println(second); second--; } // move forward one minute every 60 seconds if (second < 0) { minute--; second = 59; // reset seconds to zero //Serial.print("minut "); //Serial.println(minute); } // move forward one hour every 60 minutes if (minute < 0) { stop_counter = 1; //Serial.println("FINAL DE CUENTA"); minute = 0; // reset minutes to zero if(stop_counter) { blink_black_out(5,1000); } } } void start_counter() { int second=59, minute=14; Serial.flush(); } void clockOutput() { int sec_unit, sec_dec; int min_unit, min_dec; sec_unit = second%10; sec_dec = second/10; min_unit = minute%10; min_dec = minute/10; digitalWrite(latchPin, 0); shiftOut(dataPin, clockPin, dataArrayseg1[min_dec]); data=dataArrayseg2[min_unit]|puntos[second%2]; shiftOut(dataPin, clockPin, data); shiftOut(dataPin, clockPin, dataArrayseg3[sec_dec]); shiftOut(dataPin, clockPin, dataArrayseg4[sec_unit]); digitalWrite(latchPin, 1); } // the heart of the program void shiftOut(int myDataPin, int myClockPin, byte myDataOut) { // This shifts 8 bits out MSB first, //on the rising edge of the clock, //clock idles low //internal function setup int i=0; int pinState; pinMode(myClockPin, OUTPUT); pinMode(myDataPin, OUTPUT); //clear everything out just in case to //prepare shift register for bit shifting digitalWrite(myDataPin, 0); digitalWrite(myClockPin, 0); //for each bit in the byte myDataOut? //NOTICE THAT WE ARE COUNTING DOWN in our for loop //This means that %00000001 or "1" will go through such //that it will be pin Q0 that lights. for (i=7; i>=0; i--) { digitalWrite(myClockPin, 0); //if the value passed to myDataOut and a bitmask result // true then... so if we are at i=6 and our value is // %11010100 it would the code compares it to %01000000 // and proceeds to set pinState to 1. if ( myDataOut & (1<