參數(shù)資料
型號: AN2897
英文描述: Using the eTPU Angle Clock
中文描述: 使用時鐘角的eTPU
文件頁數(shù): 22/32頁
文件大?。?/td> 587K
代理商: AN2897
Using the eTPU Angle Clock, Rev. 0
eTPU Software Design
Freescale Semiconductor
22
else if (matchB_transA) //Here on MatchB (stall) or TransitionA (Tooth
edge)
{
if (IsTransALatched()) //If the Tooth edge is detected
{
/* Do some common tasks... */
switch(Last_State)
{
case InitializeCrank:
// State 2
CrankStatus = Waiting_Gap;
SetChannelInterrupt();//Inform the host that the crank status is
updated
Last_State = First_edge;
break;
/* Additional cases inserted here */
} // end of Switch...case statement
// The transition capture only need to setup once at init.
// Clear transition latch will re-arm the transition detection
ClearTransLatch();
// Setup match event to block out input trans too close to the valid
falling edge.
// The transition detection is disabled until the match event on the
action unit A occur.
SetupMatch_A((EdgeCaptureTime + ToothPeriod*BlankingRatio),
Mtcr1_Ctcr1_ge, match_no_change);
// Setup match event to detect stall condition
// If the crank edge transition does not occur again for a StallPeriod,
it is stalled
SetupMatch_B((EdgeCaptureTime + StallPeriod), Mtcr1_Ctcr1_ge,
match_no_change);
} // active edge
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