From 4085ae3ddfbbf10c8ccbd3dccd43452c40a1fe40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <yuval@y3xz.com>
Date: Fri, 13 Mar 2015 12:24:52 +0200
Subject: Add bootloader, nfclib and sensorlib

---
 nfclib/iso14443-4.c | 164 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 164 insertions(+)
 create mode 100644 nfclib/iso14443-4.c

(limited to 'nfclib/iso14443-4.c')

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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