diff options
| author | Yuval Adam <yuval@y3xz.com> | 2015-03-13 12:24:52 +0200 |
|---|---|---|
| committer | Yuval Adam <yuval@y3xz.com> | 2015-03-13 12:24:52 +0200 |
| commit | 4085ae3ddfbbf10c8ccbd3dccd43452c40a1fe40 (patch) | |
| tree | ac63581949a49511136e7e9e47d265bfb4119b26 /nfclib/iso14443-4.c | |
| parent | 788db64b8642bf31de6930d18a62177c64163ee0 (diff) | |
Add bootloader, nfclib and sensorlib
Diffstat (limited to 'nfclib/iso14443-4.c')
| -rw-r--r-- | nfclib/iso14443-4.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/nfclib/iso14443-4.c b/nfclib/iso14443-4.c new file mode 100644 index 0000000..4bb39af --- /dev/null +++ b/nfclib/iso14443-4.c @@ -0,0 +1,164 @@ +//*****************************************************************************
+//
+// iso14443-4.c - ISO 14443-4 implementation.
+//
+//
+// Copyright (c) 2014 Texas Instruments Incorporated. All rights reserved.
+// Software License Agreement
+//
+// Texas Instruments (TI) is supplying this software for use solely and
+// exclusively on TI's microcontroller products. The software is owned by
+// TI and/or its suppliers, and is protected under applicable copyright
+// laws. You may not combine this software with "viral" open-source
+// software in order to form a larger program.
+//
+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+// DAMAGES, FOR ANY REASON WHATSOEVER.
+//
+// This is part of revision 2.1.0.12573 of the Tiva Firmware Development Package.
+//
+//*****************************************************************************
+
+#include <string.h>
+
+#include "inc/hw_types.h"
+#include "driverlib/sysctl.h"
+#include "trf7960.h"
+
+//*****************************************************************************
+//
+// Transceive ISO 14443-4 RATS command.
+//
+//*****************************************************************************
+int
+ISO14443RATS(unsigned char ucFSDI, unsigned char ucCID, unsigned char *pucATS)
+{
+ unsigned char pucResponse[16];
+ unsigned int uiRxSize;
+ unsigned char pucRATS[2];
+ int i;
+
+ uiRxSize = sizeof(pucResponse);
+
+ //
+ // RATS command.
+ //
+ pucRATS[0] = 0xE0;
+ pucRATS[1] = (ucFSDI << 4) || ucCID;
+
+ //
+ // Transmit RATS, receive ATS.
+ //
+ TRF7960Transceive(pucRATS, sizeof(pucRATS), 0, pucResponse, &uiRxSize, NULL,
+ TRF7960_TRANSCEIVE_CRC);
+
+ if(uiRxSize >= 3)
+ {
+ //
+ // Valid ATS received, return it as an char buffer. Was transmitted LSByte first.
+ // pucResponse[0] is the length of the transmitted ATS, including TL byte, NOT including
+ // two CRC bytes
+ //
+ for(i = 0; i < pucResponse[0]; i++)
+ pucATS[i] = pucResponse[i];
+
+ return(uiRxSize);
+ }
+ else
+ {
+ return(0);
+ }
+}
+
+//*****************************************************************************
+//
+// Transceive ISO 14443-4 PPS command.
+// ucCID must between 0~14, ucDRI & ucDSI must between 0~3
+//
+//*****************************************************************************
+int
+ISO14443PPS(unsigned char ucCID, unsigned char ucDRI, unsigned char ucDSI)
+{
+ unsigned char pucResponse[3];
+ unsigned int uiRxSize;
+ unsigned char pucPPS[3];
+
+ uiRxSize = sizeof(pucResponse);
+
+ //
+ // PPS command.
+ //
+ pucPPS[0] = (0xD << 4) | ucCID;
+ pucPPS[1] = 0x11; // PPS1 is transmitted
+ pucPPS[2] = (ucDSI << 2) | ucDRI;
+
+ //
+ // Transmit PPS, receive PPS response.
+ //
+ TRF7960Transceive(pucPPS, sizeof(pucPPS), 0, pucResponse, &uiRxSize, NULL,
+ TRF7960_TRANSCEIVE_CRC);
+
+ //
+ // check if receive the first byte of the response is PPSS
+ //
+ if(pucResponse[0] == pucPPS[0])
+ return(1);
+ else
+ {
+ //
+ // Not valid response
+ //
+ return(0);
+ }
+}
+
+//*****************************************************************************
+//
+// Transceive ISO 14443-4 DESELECT command.
+// ucCID must between 0~14, ucDRI & ucDSI must between 0~3
+//
+//*****************************************************************************
+int
+ISO14443DESELECT(unsigned char ucCID)
+{
+ unsigned char pucResponse[2];
+ unsigned int uiRxSize;
+ unsigned char pucDESELECT[2];
+
+ uiRxSize = sizeof(pucResponse);
+
+ pucResponse[0] = 0;
+ pucResponse[1] = 0;
+
+ //
+ // DESELECT command.
+ //
+ pucDESELECT[0] = 0xCA; // S-block with DESELECT set and CID following
+ pucDESELECT[1] = ucCID & 0x0F;
+
+ //
+ // Transmit DESELECT, receive DESELECT response.
+ //
+ TRF7960Transceive(pucDESELECT, sizeof(pucDESELECT), 0, pucResponse, &uiRxSize, NULL,
+ TRF7960_TRANSCEIVE_CRC);
+
+ //
+ // check if receive the first byte of the response is DESELECT
+ // check if the second byte contains the same CID
+ //
+ if(pucResponse[0] == pucDESELECT[0])
+ {
+ return(1);
+ }
+ else
+ {
+ //
+ // Not valid response
+ //
+ return(0);
+ }
+}
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