/*
** ===================================================================
** Method : FC321_GetTimeMS (bean FreeCntr32)
**
** Description :
** Returns the time (as a 16-bit unsigned integer) in milliseconds
** since the last resetting after the last reset.
** Parameters :
** NAME - DESCRIPTION
** * Time - A pointer to the returned 16-bit value
** in milliseconds
** Returns :
** --- - Error code, possible codes:
** ERR_OK - OK
** ERR_SPEED - This device does not work in
** the active speed mode
** ERR_OVERFLOW - Software counter overflow
** ERR_MATH - Overflow during evaluation
** ===================================================================
*/
byte FC321_GetTimeMS(word *Time)
{
dlong RTval; /* Result of two 32-bit numbers multiplication */
if (LoadTicks()) { /* Load actual state of counter */
return ERR_OVERFLOW; /* If yes then error */
}
PE_Timer_LngMul(LTicks, 42949673UL, &RTval); /* Multiply ticks and high speed CPU mode coefficient */
if (PE_Timer_LngHi4(RTval[0], RTval[1], Time)) { /* Is the result greater or equal than 65536 ? */
return ERR_MATH; /* If yes then error */
} else { /* Is the result less than 65536 ? */
return ERR_OK; /* If yes then OK */
}
}
/*
** ===================================================================
** Method : TickTimer_SetPeriodTicks32 (bean TimerInt)
**
** Description :
** This method sets the new period of the generated events.
** The period is expressed in Xtal ticks as a 32-bit unsigned
** integer number.
** This method is available only if runtime setting type
** 'from interval' is selected in the Timing dialog box in
** Runtime setting area.
** Parameters :
** NAME - DESCRIPTION
** Ticks - Period to set [in Xtal ticks]
** (16000 to 320000 ticks)
** Returns :
** --- - Error code, possible codes:
** ERR_OK - OK
** ERR_SPEED - This device does not work in
** the active speed mode
** ERR_MATH - Overflow during evaluation
** ERR_RANGE - Parameter out of range
** ===================================================================
*/
byte TickTimer_SetPeriodTicks32(dword Ticks)
{
dlong rtval; /* Result of two 32-bit numbers multiplication */
word rtword; /* Result of 64-bit number division */
if ((Ticks > 320000) || (Ticks < 16000)) /* Is the given value out of range? */
return ERR_RANGE; /* Range error */
PE_Timer_LngMul(Ticks,838592365,&rtval); /* Multiply given value and high speed CPU mode coefficient */
if (PE_Timer_LngHi4(rtval[0],rtval[1],&rtword)) /* Is the result greater or equal than 65536 ? */
rtword = 65535; /* If yes then use maximal possible value */
CmpHighVal = rtword; /* Store result (compare register value for high speed CPU mode) to the variable CmpHighVal */
SetCV(CmpHighVal); /* Store appropriate value to the compare register according to the selected high speed CPU mode */
return ERR_OK; /* OK */
}
/*
** ===================================================================
** Method : FC81_GetTimeMS (component FreeCntr8)
**
** Description :
** Returns the time (as a 16-bit unsigned integer) in milliseconds
** since the last resetting after the last reset.
** Parameters :
** NAME - DESCRIPTION
** * Time - A pointer to the returned 16-bit value
** in milliseconds
** Returns :
** --- - Error code, possible codes:
** ERR_OK - OK
** ERR_SPEED - This device does not work in
** the active speed mode
** ERR_OVERFLOW - Software counter overflow
** ERR_MATH - Overflow during evaluation
** ===================================================================
*/
byte FC81_GetTimeMS(word *Time)
{
dlong rtval; /* Result of two 32-bit numbers multiplication */
LoadTicks(); /* Load actual state of counter */
if (LOvf) { /* Testing counter overflow */
return ERR_OVERFLOW; /* If yes then error */
}
PE_Timer_LngMul((dword)LTicks,34359738UL,&rtval); /* Multiply ticks and high speed CPU mode coefficient */
if (PE_Timer_LngHi4(rtval[0],rtval[1],Time)) { /* Is the result greater or equal than 65536 ? */
return ERR_MATH; /* If yes then error */
}
else { /* Is the result less than 65536 ? */
return ERR_OK; /* If yes then OK */
}
}
