Multiple PIDs on one Photon

[chixxi]

Thanks a lot for the library you adapted. I am using the PID to control the cooling of conical beer fermenters. I have now gotten a second one, so I want to have two separate PIDs running on a single Particle Photon.

How would I set this up? Is this the right approach:

double Setpoint1, Input1, Output1;
double Setpoint2, Input2, Output2;

double Kp=6, Ki=2600, Kd=1200;
PID myPID1(&Input1, &Output1, &Setpoint1,Kp,Ki,Kd, PID::REVERSE);
PID myPID2(&Input2, &Output2, &Setpoint2,Kp,Ki,Kd, PID::REVERSE);

int WindowSize1 = 600000;
unsigned long windowStartTime1;
int WindowSize2 = 600000;
unsigned long windowStartTime2;

windowStartTime1 = millis();
windowStartTime2 = millis();

myPID1.SetOutputLimits(10000, WindowSize1);
myPID2.SetOutputLimits(10000, WindowSize2);
  
myPID1.SetSampleTime(10000);
myPID2.SetSampleTime(10000);

myPID1.SetMode(PID::AUTOMATIC);
Input1 = temp1;
Setpoint1 = target1;
Output1 = myPID1.Compute();

myPID2.SetMode(PID::AUTOMATIC);
Input2 = temp2;
Setpoint2 = target2;
Output2 = myPID2.Compute();

For some reason this is not calculating and always returning 0.