Ehealth with Mega 2560

Projects Networking, Protocols, and Devices
5

Peter,
My apologies, I thought you had one of these units. Your comment did get me thinking and I finally got it figured out. I socketed the ehealth unit onto the mega and attached pin 6(ehealth) to pin A15(mega). I deleted the original pin change folder and added the new 2.19 beta to my library. I changed the void in the .cpp file to the following:

	void eHealthClass::readPulsioximeter(void)
	{
		uint8_t digito[41];

		uint8_t A = 0;
		uint8_t B = 0;
		uint8_t C = 0;
		uint8_t D = 0;
		uint8_t E = 0;
		uint8_t F = 0;
		uint8_t G = 0;

		for (int i = 0; i<41 ; i++) { // read all the led's of the module
			A = !digitalRead(13);
			B = !digitalRead(12);
			C = !digitalRead(11);
			D = !digitalRead(10);
			E = !digitalRead(9);
			F = !digitalRead(8);
			G = !digitalRead(7);
			
			digito[i] = segToNumber(A, B, C ,D ,E, F,G);    
			delayMicroseconds(300); //300 microseconds			
			
		}

			SPO2 = 10 * digito[24] + digito[20];
			BPM  = 100 * digito[18] + 10 * digito[2] + digito[0];
		
                         
	}

and used the following sketch.

#include <PinChangeInt.h>
#include <eHealth.h>

int cont = 0;

void setup() {
  Serial.begin(115200);  
  eHealth.initPulsioximeter();

  PCintPort::attachInterrupt(A15, &readPulsioximeter, RISING);
}

void loop() {

  Serial.print("    PRbpm : "); 
  Serial.print(eHealth.getBPM());

  Serial.print("    %SPo2 : ");
  Serial.print(eHealth.getOxygenSaturation());

  Serial.print("\n");  
  Serial.println("============================="); 
  delay(500);
}

//Include always this code when using the pulsioximeter sensor
//=========================================================================
void readPulsioximeter(){  

  cont ++;
  //Serial.println("ISR");
  if (cont == 50) { //Get only of one 50 measures to reduce the latency
    eHealth.readPulsioximeter();  
    cont = 0;
  }
}

This worked for me, every once in a while you get a delayed pulse but the output is pretty stable otherwise.

Thanks Again!