interrupt driven stepper controller inherited from AccelStepper
To use this module inherit from the AccelStepper class (http:https://www.airspayce.com/mikem/arduino/AccelStepper/), modify it to expose necessary members into public:
- _stepInterval
- _direction
- _currentPos
- _targetPos
- _speed
- _pin[4]
Easiest is to use provided patch https://github.com/sq7bti/iAccelStepper/blob/master/AccelStepper.patch
Within Energia on LM4F target there are only two timers available for free use: Timer1 and Timer2
- // SYSCTL_PERIPH_TIMER0, // wiring_analog.c analogWrite()
- SYSCTL_PERIPH_TIMER1,
- SYSCTL_PERIPH_TIMER2,
- SYSCTL_PERIPH_TIMER3
- // SYSCTL_PERIPH_TIMER4, // Tone.c
- // SYSCTL_PERIPH_TIMER5, // wiring.c - millis() micros()
- // SYSCTL_PERIPH_TIMER6,
- // SYSCTL_PERIPH_TIMER7