USB HID Keyboard Emulation Swipe Reader
SERIAL_NUM PROPERTY
Property ID: | 1 |
Property Type: | String |
Length: | 0 – 15 bytes |
Get Property: | Yes |
Set Property: | Yes |
Default Value: | The default value is no string with a length of zero. |
Description: | The value is an ASCII string that represents the device’s serial number. This |
| string can be 0 – 15 bytes long. This property is stored in |
| EEPROM memory so it will not change when the unit is power cycled. The |
| value of this property, if any, will be sent to the host when the host requests |
| the USB string descriptor. When this property is changed, the unit must be |
| power cycled to have these changes take effect for the USB descriptor. If a |
| value other than the default value is desired, it can be set by the factory upon |
| request. Examples follow. |
Example Set SERIAL_NUM property Request (Hex):
Cmd Num | Data Len | Prp ID | Prp Value |
01 | 04 | 01 | 31 32 33 |
Example Set SERIAL_NUM property Response (Hex):
Result Code | Data Len | Data |
00 | 00 |
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Example Get SERIAL_NUM property Request (Hex):
Cmd Num | Data Len | Prp ID |
00 | 01 | 01 |
Example Get SERIAL_NUM property Response (Hex):
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| Result Code | Data Len | Prp Value |
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| 00 | 03 | 31 32 33 |
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POLLING_INTERVAL PROPERTY |
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Property ID: | 2 |
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Property Type: | Byte |
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Length: | 1 byte |
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Get Property: | Yes |
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Set Property: | Yes |
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Default Value: | 10 |
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Description: | The value is a byte that represents the devices polling interval for the Interrupt | ||||
| In Endpoint. The value can be set in the range of 1 – 255 and has units of | ||||
milliseconds. The polling interval tells the host how often to poll the device for card data packets. For example, if the polling interval is set to 10, the host will poll the device for card data packets every 10ms. This property can be used to speed up or slow down the time it takes to send card data to the host. The
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