📄 cpu_core.lst
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733 *
734 * Argument(s) : none.
735 *
736 * Return(s) : Current maximum interrupts disabled time (in CPU timestamp timer counts).
737 *
738 * See also 'cpu_core.h FUNCTION PROTOTYPES CPU_TS_TmrRd() Note #2c'
739 * & 'cpu_core.h FUNCTION PROTOTYPES CPU_TSxx_to_uSec() Note #2'.
740 *
741 * Caller(s) : CPU_IntDisMeasMaxCurReset(),
742 * Application.
743 *
744 * This function is a CPU module application interface (API) function & MAY be called
745 * by application function(s).
746 *
747 * Note(s) : (1) After initialization, 'CPU_IntDisMeasMaxCur_cnts' MUST ALWAYS be accessed
748 * exclusively with interrupts disabled -- but NOT with critical sections.
749 *********************************************************************************************************
750 */
751
752 #ifdef CPU_CFG_INT_DIS_MEAS_EN
753 CPU_TS_TMR CPU_IntDisMeasMaxCurGet (void)
754 {
755 CPU_TS_TMR time_tot_cnts;
756 CPU_TS_TMR time_max_cnts;
757 CPU_SR_ALLOC();
758
759
760 CPU_INT_DIS();
761 time_tot_cnts = CPU_IntDisMeasMaxCur_cnts;
762 CPU_INT_EN();
763 time_max_cnts = CPU_IntDisMeasMaxCalc(time_tot_cnts);
764
765 return (time_max_cnts);
766 }
767 #endif
768
769
770 /*$PAGE*/
771 /*
772 *********************************************************************************************************
773 * CPU_IntDisMeasMaxGet()
774 *
775 * Description : Get (non-resetable) maximum interrupts disabled time.
776 *
777 * Argument(s) : none.
778 *
779 * Return(s) : (Non-resetable) maximum interrupts disabled time (in CPU timestamp timer counts).
780 *
781 * See also 'cpu_core.h FUNCTION PROTOTYPES CPU_TS_TmrRd() Note #2c'
782 * & 'cpu_core.h FUNCTION PROTOTYPES CPU_TSxx_to_uSec() Note #2'.
783 *
784 * Caller(s) : CPU_IntDisMeasInit(),
785 * Application.
786 *
787 * This function is a CPU module application interface (API) function & MAY be called
788 * by application function(s).
789 *
790 * Note(s) : (1) After initialization, 'CPU_IntDisMeasMax_cnts' MUST ALWAYS be accessed
791 * exclusively with interrupts disabled -- but NOT with critical sections.
792 *********************************************************************************************************
793 */
794
795 #ifdef CPU_CFG_INT_DIS_MEAS_EN
796 CPU_TS_TMR CPU_IntDisMeasMaxGet (void)
797 {
798 CPU_TS_TMR time_tot_cnts;
799 CPU_TS_TMR time_max_cnts;
800 CPU_SR_ALLOC();
801
802
803 CPU_INT_DIS();
804 time_tot_cnts = CPU_IntDisMeasMax_cnts;
805 CPU_INT_EN();
806 time_max_cnts = CPU_IntDisMeasMaxCalc(time_tot_cnts);
807
808 return (time_max_cnts);
809 }
810 #endif
811
812
813 /*$PAGE*/
814 /*
815 *********************************************************************************************************
816 * CPU_IntDisMeasStart()
817 *
818 * Description : Start interrupts disabled time measurement.
819 *
820 * Argument(s) : none.
821 *
822 * Return(s) : none.
823 *
824 * Caller(s) : CPU_CRITICAL_ENTER().
825 *
826 * This function is an INTERNAL CPU module function & MUST NOT be called by application
827 * function(s).
828 *
829 * Note(s) : none.
830 *********************************************************************************************************
831 */
832
833 #ifdef CPU_CFG_INT_DIS_MEAS_EN
834 void CPU_IntDisMeasStart (void)
835 {
836 CPU_IntDisMeasCtr++;
837 if (CPU_IntDisNestCtr == 0u) { /* If ints NOT yet dis'd, ... */
838 CPU_IntDisMeasStart_cnts = CPU_TS_TmrRd(); /* ... get ints dis'd start time. */
839 }
840 CPU_IntDisNestCtr++;
841 }
842 #endif
843
844
845 /*$PAGE*/
846 /*
847 *********************************************************************************************************
848 * CPU_IntDisMeasStop()
849 *
850 * Description : Stop interrupts disabled time measurement.
851 *
852 * Argument(s) : none.
853 *
854 * Return(s) : none.
855 *
856 * Caller(s) : CPU_CRITICAL_EXIT().
857 *
858 * This function is an INTERNAL CPU module function & MUST NOT be called by application
859 * function(s).
860 *
861 * Note(s) : (1) (a) The total amount of time interrupts are disabled by system &/or application code
862 * during critical sections is calculated by the following equations :
863 *
864 * (1) When interrupts disabled time measurements are disabled :
865 *
866 *
867 * | CRITICAL | | CRITICAL |
868 * |<- SECTION ->| |<- SECTION ->|
869 * | ENTER | | EXIT |
870 *
871 * Disable Enable
872 * Interrupts Interrupts
873 *
874 * || || || ||
875 * || || || ||
876 * || | ||<------------------------->|| | ||
877 * || |<->|| | ||<----->| ||
878 * || | | || | || | | ||
879 * | | | | |
880 * interrupts time interrupts
881 * disabled interrupts |enabled
882 * | disabled |
883 * | (via application) |
884 * time time
885 * interrupts interrupts
886 * disabled ovrhd enabled ovrhd
887 *
888 *
889 * (A) time = [ time - time ] - time
890 * interrupts [ interrupts interrupts ] total
891 * disabled [ enabled disabled ] ovrhd
892 * (via application)
893 *
894 *
895 * (B) time = time + time
896 * total interrupts interrupts
897 * ovrhd enabled ovrhd disabled ovrhd
898 *
899 *
900 * where
901 *
902 * time time interrupts are disabled between
903 * interrupts first critical section enter &
904 * disabled last critical section exit (i.e.
905 * (via application) minus total overhead time)
906 *
907 * time time when interrupts are disabled
908 * interrupts
909 * disabled
910 *
911 * time time when interrupts are enabled
912 * interrupts
913 * enabled
914 *
915 *
916 * time total overhead time to disable/enable
917 * total interrupts during critical section
918 * ovrhd enter & exit
919 *
920 * time total overhead time to disable interrupts
921 * interrupts during critical section enter
922 * disabled ovrhd
923 *
924 * time total overhead time to enable interrupts
925 * interrupts during critical section exit
926 * enabled ovrhd
927 *
928 *$PAGE*
929 *
930 * (2) When interrupts disabled time measurements are enabled :
931 *
932 *
933 * | | | |
934 * |<----- CRITICAL SECTION ENTER ----->| |<------- CRITICAL SECTION EXIT ------->|
935 * | | | |
936 *
937 * Time Time
938 * Disable Measurement Measurement Enable
939 * Interrupts Start Stop Interrupts
940 *
941 * || | || || | ||
942 * || | || || | ||
943 * || | | ||<------------------------->|| | | ||
944 * || | | |<----------->|| | ||<------------->| | | ||
945 * || | | | | || | || | | | | ||
946 * | | | | | | |
947 * interrupts get | time | get interrupts
948 * disabled start time | interrupts | stop time enabled
949 * meas | disabled ⌨️ 快捷键说明
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