AN1905 ST Microelectronics, Inc., AN1905 Datasheet - Page 43
AN1905
Manufacturer Part Number
AN1905
Description
St7mc Three-phase BLDC Motor Control Software Library
Manufacturer
ST Microelectronics, Inc.
Datasheet
1.AN1905.pdf
(77 pages)
ST7MC THREE-PHASE BLDC MOTOR CONTROL SOFTWARE LIBRARY
Figure 21. Z event processing (Sensor mode only)
Z interrupt request?
Save MZREG value
and prescaler ratio into Step_Z buffer
(save step time between two
zero crossing events)
Return from interrupt
Figure 22. RP event processing (Sensorless mode only)
RP interrupt request?
HSW DEMAG
HW DEMAG
SW DEMAG
yes
no
RPICounter = 0?
RPICounter = RPICounter-1
yes
RPICounter = 0?
MDREG = SoftDemagTime
no
Return from interrupt
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