I have a 7 segment led running through a 74hc595 counting 0-9 with a small pause in between each
next incremental digit.
I would like to change this by adding a button press to go to the next digit up
Yes I am trying to make a scoreboard...
can delay(xxxx) be replaced by by adding instead
the code snippet from the button tutorial
I think i am having trouble understanding how to pause the shift register 74hc595 and restart it.
I found this sketch on the net
but I am stuck trying to modify it...
int dataPin = 11;
int clockPin = 12;
int latchPin = 8;
int len = 10;
//holders for infromation you're going to pass to shifting function
byte dataRED;
byte dataArrayRED[10];
byte off = 0x00;
byte decimalpoint = 0x80;
void setup() {
//set pins to output because they are addressed in the main loop
pinMode(latchPin, OUTPUT);
//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.
dataArrayRED[0] = 0x3f; //00111111 - 0
dataArrayRED[1] = 0x06; //00000110 - 1
dataArrayRED[2] = 0x5B; //01011011 - 2
dataArrayRED[3] = 0x4F; //01001111 - 3
dataArrayRED[4] = 0x66; //01100110 - 4
dataArrayRED[5] = 0x6D; //01101101 - 5
dataArrayRED[6] = 0x7D; //01111101 - 6
dataArrayRED[7] = 0x07; //00000111 - 7
dataArrayRED[8] = 0x7F; //01111111 - 8
dataArrayRED[9] = 0x67; //01100111 - 9
}
void loop() {
int count = 100;
int val = 10; //this is for how many digits
for( int i = 0; i<count; i++ )
{
digitalWrite(latchPin, 0);
int digit2 = i % val;
int digit1 = ( i - digit2 ) / val;
shiftOut(dataPin, clockPin, dataArrayRED[ digit2 ]);
shiftOut(dataPin, clockPin, dataArrayRED[ digit1 ]);
digitalWrite(latchPin, 1);
delay(30); //code for button here#############################
delay(10);
}
}
// 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<<i) )
{
pinState= 1;
}
else
{
pinState= 0;
}
//Sets the pin to HIGH or LOW depending on pinState
digitalWrite(myDataPin, pinState);
//register shifts bits on upstroke of clock pin
digitalWrite(myClockPin, 1);
//zero the data pin after shift to prevent bleed through
digitalWrite(myDataPin, 0);
}
//stop shifting
digitalWrite(myClockPin, 0);
}