直接使用pulse sensor传感器的程序和上位机小软件显示心率图和心率的，目前想把心率数据导出显示到三位共阴的小数码管上，但是快崩溃了，数码管只有一位四位的教程，这并不重要，重要的是怎么把心率数据弄到数码管上，好像没有这样的教程啊。。。着能操作吗？哭唧唧的开源课作业。
这是传感器的程序
int pulsePin = 0;
int blinkPin = 13;
int fadePin = 5;
int fadeRate = 0;
volatile int BPM;
volatile int Signal;
volatile int IBI = 600;
volatile boolean Pulse = false;
volatile boolean QS = false;
void setup(){
pinMode(blinkPin,OUTPUT);
pinMode(fadePin,OUTPUT);
Serial.begin(115200);
interruptSetup();
}
void loop(){
sendDataToProcessing('S', Signal);
if (QS == true){
fadeRate = 255;
sendDataToProcessing('B',BPM);
sendDataToProcessing('Q',IBI);
QS = false;
}
ledFadeToBeat();
delay(20);
}
void ledFadeToBeat(){
fadeRate -= 15;
fadeRate = constrain(fadeRate,0,255);
analogWrite(fadePin,fadeRate);
}
void sendDataToProcessing(char symbol, int data ){
Serial.print(symbol);
Serial.println(data);
}
volatile int rate[10];
volatile unsigned long sampleCounter = 0;
volatile unsigned long lastBeatTime = 0;
volatile int P =512;
volatile int T = 512;
volatile int thresh = 512;
volatile int amp = 100;
volatile boolean firstBeat = true;
volatile boolean secondBeat = false;
void interruptSetup(){
TCCR2A = 0x02;
TCCR2B = 0x06;
OCR2A = 0X7C;
TIMSK2 = 0x02;
sei();
}
ISR(TIMER2_COMPA_vect){
cli();
Signal = analogRead(pulsePin);
sampleCounter += 2;
int N = sampleCounter - lastBeatTime;
if(Signal < thresh && N > (IBI/5)*3){
if (Signal < T){
T = Signal;
}
}
if(Signal > thresh && Signal > P){
P = Signal;
}
if (N > 250){
if ( (Signal > thresh) && (Pulse == false) && (N > (IBI/5)*3) ){
Pulse = true;
digitalWrite(blinkPin,HIGH);
IBI = sampleCounter - lastBeatTime;
lastBeatTime = sampleCounter;
if(secondBeat){
secondBeat = false;
for(int i=0; i<=9; i++){
rate[i] = IBI;
}
}
if(firstBeat){
firstBeat = false;
secondBeat = true;
sei();
return;
}
word runningTotal = 0;
for(int i=0; i<=8; i++){
rate[i] = rate[i+1];
runningTotal += rate[i];
}
rate[9] = IBI;
runningTotal += rate[9];
runningTotal /= 10;
BPM = 60000/runningTotal;
QS = true;
}
}
if (Signal < thresh && Pulse == true){
digitalWrite(blinkPin,LOW);
Pulse = false;
amp = P - T;
thresh = amp/2 + T;
P = thresh;
T = thresh;
}
if (N > 2500){
thresh = 512;
P = 512;
T = 512;
lastBeatTime = sampleCounter;
firstBeat = true;
secondBeat = false;
}
sei();
}
