Veryfing code using this library in Particle Build fails with this error:
PulseSensor_Spark/SparkIntervalTimer.h:122:30: error: 'SysInterrupt_TIM3' was not declared in this scope
if (!attachSystemInterrupt(SysInterrupt_TIM3, Wiring_TIM3_Interrupt_Handler_override))
Veryfing code using this library in Particle Build fails with this error: