AN3224 datasheet(12/49 Pages) STMICROELECTRONICS

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PR101-USB and MR101-USB reader detection

AN3224

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Doc ID 17559 Rev 2

PR101-USB and MR101-USB reader detection

Prior to sending any RF command to a PR101-USB or an MR101-USB RF readers, the host

computer must detect the reader. Once detected, a handle is randomly assigned to the

reader.

This section presents all the available functions for performing reader detection. Visual

Basic and C/C++ source code examples are also provided.

The readers are driven by the FEUSB and FEISC functions delivered in the FEUSB.dll and

FEISC.dll files (see Section 3: Installation requirements).

Refer to Appendix C.1 for the full list of error codes returned by the FEUSB functions.

4.1

Overview of reader detection and connection functions

FEUSB.dll and FEISC.dll include several functions allowing to detect or connect to a

reader:

●

FEUSB_ClearScanList

This function re-initializes the USB detection process by clearing the list of scanned

readers. Refer to Section 4.1.1 for a detailed description of the function.

●

FEUSB_Scan

This function searches for all the USB FEIG readers connected to the USB ports of the

host computer. Refer to Section 4.1.2 for a detailed description of the function.

●

FEUSB_GetScanListSize

This function retrieves the number of detected readers. Refer to Section 4.1.3 for a

detailed description of the function.

●

FEUSB_GetScanListPara

This function gives access to all the detected reader information. Refer to Section 4.1.4

for a detailed description of the function.

●

FEUSB_OpenDevice

This function opens a communication channel between a USB FEIG reader and the

FEUSB dll, and assigns a handle to this channel. Refer to Section 4.1.5 for a detailed

description of the function.

●

FEISC_NewReader

This function opens a communication channel between a USB FEIG reader and the

FEISC dll. The reader must have been previously detected by the

FEUSB_OpenDevice

function.Refer to Section 4.1.6 for a detailed description of the

function.

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