Added sensible default value for I reset, this should be exposed in the api

firmware/drivers/pid_controller/pid_controller.cpp

@@ -22,7 +22,7 @@ double Pid_controller::output_=0.05; //output to LTC6992
 std::vector<double> Pid_controller::pid_vec_ = {0., 0., 0.}; //current values of P I D
 std::vector<double> Pid_controller::kpid_vec_ = {0., 0., 0.}; //coefficients Kp Ki Kd
 double Pid_controller::I_reset_ = 0.; //reset value of I
-double Pid_controller::I_reset_errsq_ = 0.; //value of error*error above which the I-term is held in reset
+double Pid_controller::I_reset_errsq_ = 0.5; //value of error*error above which the I-term is held in reset
 
 
 void Pid_controller::init(double setpoint, std::vector<double> kpid, double I_reset, double I_reset_errsq){