| Description: |
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A Hardware Object that consists of 8 of the OOPic's I/O Lines. |
| Operation: |
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An oDIO8 Object's Value property represents the binary value of the electrical state of the I/O lines specified by the IOGroup property. The I/O groups are 8 contiguous I/O Lines beginning at I/O line 8, 16, or 24. The Direction property specifies if the I/O Lines are inputs or outputs. When the IOGroup property is set the Direction property is updated to reflect the current state of the specified I/O Lines. |
| Remarks: |
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Three physical 8-bit I/O Groups are implemented within the OOPic. Caution: IOGroup 2 is used for special purposes. Be sure that you are not using this IOGroup if these special functions are in use. |
| Storage size & Availability: |
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The following table lists the size and availability of the oDio8 Object:
| Object | Size | Version |
 |
oDio8 |
1 Bytes |
A.1.0 and greater |
|
| Properties: |
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The following table lists the Properties of the oDIO8 Object:
| Property |
Description |
| Address |
Returns a pointer to the address of the oDIO8 Object instance. Data-Type: Number-Pointer, Read-Only Data-Range: 0 - 127 |
| Direction |
Determines if the I/O Lines are inputs or outputs. Data-Type: Bit Data-Range: 0 - 1 The following table lists the values of the Direction Property:
| Direction |
Constant |
Description |
| 0 |
cvOutput |
The specified I/O Lines are outputs and the Value property is written to them. |
| 1 |
cvInput |
The specified I/O Lines are High-Z and the Value property is read from them. |
|
| IOGroup |
The physical I/O Group to use. Data-Type: Nibble Data-Range: 0 - 3 The following table lists the values of the IOGroup Property:
| IOGroup |
Constant |
Description |
| 0 |
cvOff |
The instance of the oDIO8 Object is inactive. |
| 1 |
|
The oDIO8 Object uses pins 8 - 15 for its I/O. |
| 2 |
|
The oDIO8 Object uses pins 16 - 23 for its I/O. |
| 3 |
|
The oDIO8 Object uses pins 24 - 31 for its I/O |
|
| String |
The Value property represented as a string. Note: The String property is available in OOPic Basic Version 2 Data-Type: String |
| Value |
The electrical connection to the I/O Lines. Data-Type: Byte Default Data-Range: 0 - 255 |
|
| Methods: |
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The following table lists the Methods of the oDIO8 Object:
| Methods |
Description |
| Clear |
Clears the Value property to 0. |
| Dec |
Decrements the Value property by 1. |
| Inc |
Increments the Value property by 1. |
| Invert |
Inverts the bits in the Value property |
| LShift |
Shifts the bits in the Value property left. |
| RShift |
Shifts the bits in the Value property Right. |
| Set |
Sets the Value property to 255. |
|
| Example: |
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In the following example, the oDio8 Object is used.
'This program creates one oDio8 Object
'and outputs a count pattern.
Dim A As New oDio8
Sub main()
A.IOGroup = 1
A.Direction = cvOutput
Do
A.Inc
Loop
End Sub
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| See Also: |
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oDio1 - An Object that provides an 1-bit digital I/O.
oDio4 - An Object that provides a 4-bit digital I/O.
oDio16 - An Object that provides a 16-bit digital I/O. |