/*
** ===================================================================
** 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 : 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 */
}
}
