na tejto stránke (https://simple-circuit.com/arduino-rota ... t-display/), je uverejnený príspevok s rotačným enkoderom. Chcem poprosiť niekoho, kto ovláda arduino, či by mi vedel upraviť čítanie enkodéra, tak aby pri dosiahnutí čísla 359 preskočilo čítanie na 0, aj v kladnej aj zápornej hodnote. Tento číta až do 999 a neviem si poradiť, ako na to. Ujo Google mi vytrvalo "odmieta poradiť". Programovanie neovládam, preto by som prosil priamo o úpravu programu, kde a čo vložiť. Potrebujem to na zobrazenie úhlu natočenia pracovného stola. Ďakujem.
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/*
* Interfacing Arduino with common anode 7-segment display.
* Print rotary encoder values on 4-digit 7-segment display.
* This is a free software with NO WARRANTY.
* https://simple-circuit.com/
*/
// segment pin definitions
#define SegA 12
#define SegB 11
#define SegC 10
#define SegD 9
#define SegE 8
#define SegF 7
#define SegG 6
// common pins of the four digits definitions
#define Dig1 5
#define Dig2 4
#define Dig3 3
#define Dig4 2
// variable declarations
byte current_digit, last_read;
int8_t quad = 0, change;
int enc_value = 0;
void setup()
{
pinMode(SegA, OUTPUT);
pinMode(SegB, OUTPUT);
pinMode(SegC, OUTPUT);
pinMode(SegD, OUTPUT);
pinMode(SegE, OUTPUT);
pinMode(SegF, OUTPUT);
pinMode(SegG, OUTPUT);
pinMode(Dig1, OUTPUT);
pinMode(Dig2, OUTPUT);
pinMode(Dig3, OUTPUT);
pinMode(Dig4, OUTPUT);
pinMode(A4, INPUT_PULLUP);
pinMode(A5, INPUT_PULLUP);
last_read = digitalRead(A5) << 1 | digitalRead(A4);
disp_off(); // turn off the display
// Timer1 module overflow interrupt configuration
TCCR1A = 0;
TCCR1B = 1; // enable Timer1 with prescaler = 1 ( 16 ticks each 1 µs)
TCNT1 = 0; // set Timer1 preload value to 0 (reset)
TIMSK1 = 1; // enable Timer1 overflow interrupt
// pin change interrupt configuration
PCICR = 2; // enable pin change interrupt for pins PCINT14..8 (Arduino A0 to A5)
PCMSK1 = 0x30; // enable pin change interrupt for pins PCINT12 & PCINT13 (Arduino A4 & A5)
}
ISR(TIMER1_OVF_vect) // Timer1 interrupt service routine (ISR)
{
disp_off(); // turn off the display
uint16_t abs_value = abs(enc_value); // abs: absolute value
switch (current_digit)
{
case 1:
if(enc_value < 0) // if negative value
{ // print minus sign (-) on digit 1 (most left digit)
disp(10); // prepare to display digit 1
digitalWrite(Dig1, LOW); // turn on digit 1
}
break;
case 2:
disp( (abs_value / 100) % 10); // prepare to display digit 2
digitalWrite(Dig2, LOW); // turn on digit 2
break;
case 3:
disp( (abs_value / 10) % 10); // prepare to display digit 3
digitalWrite(Dig3, LOW); // turn on digit 3
break;
case 4:
disp(abs_value % 10); // prepare to display digit 4 (most right)
digitalWrite(Dig4, LOW); // turn on digit 4
}
current_digit = (current_digit % 4) + 1;
}
ISR (PCINT1_vect) // ISR for Arduino A4 (PCINT12) and A5 (PCINT13) pins
{
uint8_t encoderRead = 0;
encoderRead = digitalRead(A5) << 1 | digitalRead(A4);
if(encoderRead == last_read)
return;
if(bitRead(encoderRead, 0) == bitRead(last_read, 1))
quad -= 1;
else
quad += 1;
last_read = encoderRead;
}
int8_t EncoderGet(void)
{
int8_t val = 0;
while(quad >= 4){
val += 1;
quad -= 4;
}
while(quad <= -4){
val -= 1;
quad += 4;
}
return val;
}
// main loop
void loop()
{
change = EncoderGet();
if(change)
enc_value += change;
delay(100); // wait 100 milliseconds
}
void disp(byte number)
{
switch (number)
{
case 0: // print 0
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, LOW);
digitalWrite(SegG, HIGH);
break;
case 1: // print 1
digitalWrite(SegA, HIGH);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, HIGH);
break;
case 2: // print 2
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, HIGH);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, LOW);
break;
case 3: // print 3
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, LOW);
break;
case 4: // print 4
digitalWrite(SegA, HIGH);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;
case 5: // print 5
digitalWrite(SegA, LOW);
digitalWrite(SegB, HIGH);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;
case 6: // print 6
digitalWrite(SegA, LOW);
digitalWrite(SegB, HIGH);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;
case 7: // print 7
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, HIGH);
break;
case 8: // print 8
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, LOW);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;
case 9: // print 9
digitalWrite(SegA, LOW);
digitalWrite(SegB, LOW);
digitalWrite(SegC, LOW);
digitalWrite(SegD, LOW);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, LOW);
digitalWrite(SegG, LOW);
break;
case 10: // print -
digitalWrite(SegA, HIGH);
digitalWrite(SegB, HIGH);
digitalWrite(SegC, HIGH);
digitalWrite(SegD, HIGH);
digitalWrite(SegE, HIGH);
digitalWrite(SegF, HIGH);
digitalWrite(SegG, LOW);
}
}
void disp_off()
{
digitalWrite(Dig1, HIGH);
digitalWrite(Dig2, HIGH);
digitalWrite(Dig3, HIGH);
digitalWrite(Dig4, HIGH);
}
// end of code.
