ZBasic System Library
140
ZBasic Microcontrollers
Type
Function returning Byte
Invocation
GetDayOfWeek()
GetDayOfWeek(dayNum)
Parameter
Method
Type
Description
dayNum
ByVal
integral
The day number to convert to year, month, day.
Discussion
This routine computes the day of the week corresponding to a day number. If the day number is omitted,
the value of Register.RTCDay is used.. A return value of 1 corresponds to Sunday and a value of 7
corresponds to Saturday with the remaining days falling in order in between. There are built-in constants
that represent the day numbers as shown in the table below.
Day of Week Constants
Constant
Value
zxSunday
1
zxMonday
2
zxTuesday
3
zxWednesday
4
zxThursday
5
zxFriday
6
zxSaturday
7
Note that Register.RTCDay is initialized to zero on power-up or reset. This day number corresponds to
Friday, January 1, 1999.
Compatibility
This function is not available if the RTC is not enabled in your application.
See Also
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