General information
Category:
Coding, syntax & commands
Hi Ed,
Are Inp and Out funtions in a later version of VFP? If not is it possible to read and write to a port directly in VFP?
>>Ed Rauh,
>> I have a problem to pass a hexadecimal parameter in VFP but in Vb that is ok, why ?
>> Below is VB code :
>>
>>>Dim PortAddress As Integer
>>>Dim nData As Integer
>>>PortAddress = &H2E3
>>>Out PortAddress, 128
>>>PortAddress = &H2E0
>>>nData = 1
>>>Out PortAddress, nData
>>>text1.text= Inp(PortAddress)
>>
>> Do you know how to pass a hexadecimal value of "&h2E3" to the PortAddress in VFP ? When i display the return value from Inp(PortAddress), it is not the actual value i want that is not an integer!!
>>how to solve it ?
>
>VFP represents hexidecimal notation in constants by prefixing with 0x; for example:
>
>? ox2E3 && prints out 739
>
>In your case, Out(0x2E3,128) would send 128 (0x80) out port 0x2E3 (739 decimal). To read from port ox2E0, you'd say Inp(0x2E0).
>
>Numbers by default are displayed in decimal notation. To display a number in hexidecimal format, use the TRANSFORM() function with the '@0' argument for formatting. For example, to display 739 in hexidecimal notation:
>
>? TRANSFORM(739,'@0) && prints 0x000002E3
Previous
Next
Reply
View the map of this thread
View the map of this thread starting from this message only
View all messages of this thread
View all messages of this thread starting from this message only