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AN3224 датащи(PDF) 28 Page - STMicroelectronics

номер детали AN3224
подробное описание детали  Developing an application allowing PR101-USB and MR101-USB FEIG readers to communicate with M24LRXX transponders
PDF  49 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3224 датащи(HTML) 28 Page - STMicroelectronics

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RF ISO 15693 High-level commands
AN3224
28/49
Doc ID 17559 Rev 2
5.2
RF ISO 15693 High-level Inventory command
To issue an RF ISO 15693 High-level Inventory command, send the FEISC_0xB0_ISOCmd
function with the strReqData set to ‘0100’ (Inventory request).
At the end of an inventory request, all the transponders are put in Quiet mode (ISO 15693
“STAY QUIET”). To be able to communicate with the detected transponder. A “RESET TO
READY” RF request must be issued.
Below are code examples in Visual Basic and C/C++.
5.2.1
Example of High-level Inventory command
Visual Basic source code
Private Function Cmd_Inventory_FEIG() As Boolean
Dim strReqData As String
Dim lngReqDataLen As Long
Dim lngRspLength As Long
Dim strRespData As String * 512
Dim lngRespDataLen As Long
Dim lngStatus As Long
Dim i As Long
Dim lngTranspNumber
As Long
Dim strtransponder As String
'init display
‘txtInventoryRF_answer.Text = ""
‘For i = 0 To 2
‘
txtTransponderUID(i).Text = ""
‘
txtTransponderDSFID(i).Text = ""
‘Next i
' Inventory request Host mode : 0x0100
strReqData = "0100"
lngReqDataLen = Len(strReqData)
' FEIG USB INVENTORY request in Host mode
lngStatus = FEISC_0xB0_ISOCmd(lngAttachedDeviceHandle(0), &HFF, _
strReqData, lngReqDataLen, strRespData, _
lngRespDataLen, 1)
' RF INVENTORY REQUEST RESULT
' if(lngStatus = 0) then PASS else FAIL
' if (lngRespDataLen = 0) then No transponder answer
' else strRespData contains the transponder(s) answer(s)
If (lngRespDataLen = 0) Then
Cmd_Inventory_FEIG = False
‘txtInventoryRF_answer.Text = "No Tag answer detected"
Else
lngTranspNumber = CLng("&h" & Mid(strRespData, 1, 2))
If (lngRespDataLen > 1 And lngTranspNumber > 3) Then
Cmd_Inventory_FEIG = False
‘Too much Tags detected :



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