Created
June 25, 2012 18:20
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DTMF decoder code
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#include <PinChangeInt.h> | |
#define PIN1 2 | |
#define PIN2 3 | |
#define PIN3 4 | |
uint8_t latest_interrupted_pin; | |
uint8_t interrupt_count[20]={0}; // 20 possible arduino pins | |
int i; | |
void quicfunc() { | |
latest_interrupted_pin=PCintPort::arduinoPin; | |
interrupt_count[latest_interrupted_pin]++; | |
}; | |
// You can assign any number of functions to any number of pins. | |
// How cool is that? | |
int number[11]; | |
void pin3func() { | |
number[i]=(PINC&0x0f); | |
i++; | |
// Serial.print("Pin "); Serial.print(PIN3, DEC); Serial.println("!"); | |
} | |
char ph[12]; | |
void setup() | |
{ | |
Serial.begin(115200); | |
if (SD.begin(10)) | |
{ | |
Serial.println("Card initialised ...."); | |
} | |
pinMode(PIN1, INPUT); digitalWrite(PIN1, HIGH); | |
PCintPort::attachInterrupt(PIN1, &quicfunc, FALLING); // add more attachInterrupt code as required | |
pinMode(PIN2, INPUT); digitalWrite(PIN2, HIGH); | |
PCintPort::attachInterrupt(PIN2, &quicfunc, FALLING); | |
DDRC=0x00; | |
pinMode(PIN3, INPUT); digitalWrite(PIN3, HIGH); | |
PCintPort::attachInterrupt(PIN3, &pin3func, RISING); | |
Serial.println("---------------------------------------"); | |
Serial.println("Ready"); | |
DTMF(); | |
} | |
void DTMF() | |
{ | |
while(i != 10) | |
{ | |
delay(100); | |
} | |
for(i=9;i>=0;i--) | |
{ | |
if(number[i]==10) number[i]=0; | |
ph[i]=number[i]+'0'; | |
//Serial.println(number[i],DEC); | |
} | |
ph[10] = '\0'; | |
Serial.println(ph); | |
i=0; | |
} |
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