3.22EjemploDRM007 Co..

Software Design Considerations
5.6.4 Process Washing Machine
The process generates reference speeds, depending on the process
phase being executed of the washer. The user selects the washer
process by a user’s menu.
5.7 Application State Diagram
Reset
Initialization
Interrupts
Main Loop
(State Machine)
Figure 5-8. Application State Diagram
As Figure 5-8 shows, the application state consists of the initialization
routine, followed by a main loop with background tasks. The time critical
functions are calculated by the interrupt routines.
A brief description of the 3-phase BLDC motor control follows:
• Initialization routine:
– PWM initialization
– System timer initialization
– Input capture initialization for position feedback
– Variable initialization for speed measurement
– Character display initialization
– I/O ports initialization
– PLL initialization
– MCU initialization
DRM007
BLDC Motor Control Board for Industrial and Appliance Applications
86 Software Design Considerations MOTOROLA