若HW_RTC_PERSISTENT0寄存器中的AUTO_RESTART为1时,则系统关闭后180ms就会再上电,所以若想关机不开启,就要AUTO_RESTART为0。
所以修改bootlets中的AUTO_RESTART为0
void PowerPrep_ClearAutoRestart( void )
{
HW_RTC_CTRL_CLR( BM_ICOLL_CTRL_SFTRST );
while( HW_RTC_CTRL.B.SFTRST == 1 );
HW_RTC_CTRL_CLR( BM_ICOLL_CTRL_CLKGATE );
while( HW_RTC_CTRL.B.CLKGATE == 1 );
/* Due to the hardware design bug of mx28 EVK-A
* we need to set the AUTO_RESTART bit.
*/
if(HW_RTC_PERSISTENT0.B.AUTO_RESTART==1)
{
while(BF_RD( RTC_STAT, NEW_REGS));
HW_RTC_PERSISTENT0.B.AUTO_RESTART = 0;
BF_SET(RTC_CTRL, FORCE_UPDATE);
BF_CLR(RTC_CTRL, FORCE_UPDATE);
while(BF_RD( RTC_STAT, NEW_REGS));
while(BF_RD( RTC_STAT, STALE_REGS));
}
}
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