AMX 86 ajtmwr ajtmwr

334

DAK

AMX 86 Procedures

ajtmwr ajtmwr

Purpose Start/Stop an Interval Timer

Used by n Task n IS P n Timer Procedure n Restart Procedure n Exit Procedure

Setup AMXID timerid;

long tval;

int status;

status = ajtmwr(timerid, tval);

AX DX BX:CX

Where timerid is the timer id identifying the timer to be started or stopped.

tval is the timer interval measured in AMX system ticks. Tval must be

positive. Set tval to 0 to stop a timer.

Results Interrupts are disabled and then restored to their state at the time of the

call.

Status is returned.

AEROK = Call successful

AERNSTM = Invalid timer id

AERTMV = Invalid interval (<0)

Note A Timer Procedure associated with a periodic timer can stop the timer by

calling ajtmwr with tval = 0. The periodic timer can be restarted by

calling ajtmwr with tval = n. The timer will expire after n system ticks

and resume periodic operation with its predefined period.

Non periodic timers (one-shots) can be retriggered by their associated

Timer Procedure using ajtmwr to restart the timer.