timers.i

来自「cs8900 c51应用」· I 代码 · 共 265 行

#line 1 "..\timers.c" /0



















































 
 


















 
 
 
#error *** WARNING C318 IN LINE 74 OF ..\timers.c: can't open file 'inet/debug.h'
 
#error *** WARNING C318 IN LINE 75 OF ..\timers.c: can't open file 'inet/datatypes.h'
 
#error *** WARNING C318 IN LINE 76 OF ..\timers.c: can't open file 'inet/timers.h'
 
#error *** WARNING C318 IN LINE 77 OF ..\timers.c: can't open file 'inet/system.h'
 






 
 struct
 {
 UINT32 value;
 UINT8 free;
 } timer_pool[NUMTIMERS];
 












 
 void timer_pool_init (void)
 {
 UINT8 i;
 
 for( i=0; i < NUMTIMERS; i++) {
 timer_pool[i].value = 0;
 timer_pool[i].free = TRUE;
 
 }
 
 
 }
 
 











 
 UINT8 get_timer (void)
 {
 
 UINT8 i;
 UINT8 first_match;
 
 
 for( i=0; i < NUMTIMERS; i++) {
 if( timer_pool[i].free == TRUE ) {
 
 
 
 timer_pool[i].free = FALSE;
 first_match = i;
 return first_match;		 
 }
 
 }
 
 
 
 TMR_DEBUGOUT("No Timers, Resetting..\n\r");
 RESET_SYSTEM();
 
 
 }
 
 









 
 void free_timer (UINT8 nbr)
 {
 
 
 if( nbr > (NUMTIMERS-1) ) 
 return; 
 
 timer_pool[nbr].free = TRUE;
 
 }
 
 












 
 void init_timer ( UINT8 nbr, UINT32 tout )
 {
 
 
 UINT32 val;
 
 if( nbr > (NUMTIMERS-1) ) 
 return; 
 
 if( timer_pool[nbr].free == TRUE ) 
 return;
 
 
 
 val = tout;
 
 OS_EnterCritical();
 
 
 
 timer_pool[nbr].value = val;
 
 OS_ExitCritical();
 
 } 
 












 
 UINT32 check_timer (UINT8 nbr)
 {
 
 return timer_pool[nbr].value;
 
 }
 
 






 
 void decrement_timers (void)
 {
 UINT8 i;
 
 
 
 for( i=0; i<NUMTIMERS; i++ ) {
 if( (timer_pool[i].free == FALSE) && (timer_pool[i].value != 0))
 timer_pool[i].value --;
 }
 }