3.22EjemploDRM007 Co..

Software Design Considerations
Description of Routines
5.9.5 InitTimerB(void)
Timer B channel 0 and channel 1 are configured as input capture
channels with interrupts enabled on any edge. Channel 0 is connected
to Hall sensor B and channel 1 to Hall sensor C. These two channels are
used also for commutation control. Channel 1 is used for period
calculation between two Hall sensor edges.
5.9.6 Byte ResolveButtons(void)
The state of the input pins, where the push buttons are continuously
checked for any change, are tested here. A debounce delay is included
in the routine. If there is no change on the push buttons, and the Speed
message is being displayed, the respective value of the actual speed
and reference speed are displayed in this routine.
5.9.7 InitMotor(Byte Commanded_Operation)
This subroutine is called from main to perform one of the two of the
washing machine processes. The process is selected by the parameter
value, Commanded_Operation.
Parameters:
BLDCWASH — Wash process of the washing machine.
BLDCSPIN — Spin process
Depending on the process selected from the user’s menu, the Speed
reference is loaded from the respective look up table. The speed
controller integral portion is set to 0, the bootstrap capacitors are
charged and the timers are resumed.
5.9.8 TimerAOverflow_ISR(void)
Refer to 5.4 Speed Control Algorithm.
BLDC Motor Control Board for Industrial and Appliance Applications
DRM007
MOTOROLA Software Design Considerations 91