From d222d836a7a97c7164e0f96920b148d532fa574a Mon Sep 17 00:00:00 2001
From: laforge <laforge@e0336214-984f-0b4b-a45f-81c69e1f0ede>
Date: Thu, 20 Oct 2005 20:15:49 +0000
Subject: add mifare ultralight support (incomplete)

git-svn-id: https://svn.gnumonks.org/trunk/librfid@1543 e0336214-984f-0b4b-a45f-81c69e1f0ede
---
 rfid_proto_mifare_ul.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 rfid_proto_mifare_ul.c

(limited to 'rfid_proto_mifare_ul.c')

diff --git a/rfid_proto_mifare_ul.c b/rfid_proto_mifare_ul.c
new file mode 100644
index 0000000..3fec95b
--- /dev/null
+++ b/rfid_proto_mifare_ul.c
@@ -0,0 +1,135 @@
+
+/* Mifare Ultralight implementation, PCD side.
+ *
+ * (C) 2005 by Harald Welte <laforge@gnumonks.org>
+ *
+ */
+
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rfid/rfid.h>
+#include <rfid/rfid_protocol.h>
+#include <rfid/rfid_layer2.h>
+//#include <rfid/rfid_layer2_iso14443b.h>
+
+//#include <rfid/rfid_asic.h>
+//#include <rfid/rfid_reader.h>
+
+#include "rfid_iso14443_common.h"
+
+
+#define MIFARE_UL_CMD_WRITE	0xA2
+#define MIFARE_UL_CMD_READ	0x30
+
+/* FIXME */
+#define MIFARE_UL_READ_FWT	100
+#define MIFARE_UL_WRITE_FWT	100
+
+static int
+mful_read(struct rfid_protocol_handle *ph, unsigned int page,
+	  unsigned char *rx_data, unsigned int *rx_len)
+{
+	unsigned char rx_buf[16];
+	unsigned int real_rx_len = sizeof(rx_buf);
+	unsigned char tx[2];
+	int ret;
+
+	if (page > 7)
+		return -EINVAL;
+
+	tx[0] = MIFARE_UL_CMD_READ;
+	tx[1] = page & 0xff;
+
+	ret = ph->l2h->l2->fn.transcieve(ph->l2h, tx, sizeof(tx), rx_buf,
+					 &real_rx_len, MIFARE_UL_READ_FWT, 0);
+
+	if (ret < 0)
+		return ret;
+
+	if (real_rx_len < *rx_len)
+		*rx_len = real_rx_len;
+
+	memcpy(rx_data, rx_buf, *rx_len);
+
+	return ret;
+}
+
+static int
+mful_write(struct rfid_protocol_handle *ph, unsigned int page,
+	   unsigned char *tx_data, unsigned int tx_len)
+{
+	unsigned int i;
+	unsigned char tx[6];
+	unsigned char rx[1];
+	unsigned int rx_len;
+	int ret;
+
+	if (tx_len != 4 || page > 7)
+		return -EINVAL;
+
+	tx[0] = MIFARE_UL_CMD_WRITE;
+	tx[1] = page & 0xff;
+
+	for (i = 0; i < 4; i++)
+		tx[2+i] = tx_data[i];
+
+	ret = ph->l2h->l2->fn.transcieve(ph->l2h, tx, sizeof(tx), rx,
+					 &rx_len, MIFARE_UL_WRITE_FWT, 0);
+					
+	/* FIXME:look at RX, check for ACK/NAK */
+
+	return ret;
+}
+
+static int
+mful_transcieve(struct rfid_protocol_handle *ph,
+		const unsigned char *tx_data, unsigned int tx_len,
+		unsigned char *rx_data, unsigned int *rx_len,
+		unsigned int timeout, unsigned int flags)
+{
+	return -EINVAL;
+}
+
+static struct rfid_protocol_handle *
+mful_init(struct rfid_layer2_handle *l2h)
+{
+	struct rfid_protocol_handle *ph;
+	ph = malloc(sizeof(struct rfid_protocol_handle));
+	return ph;
+}
+
+static int mful_fini(struct rfid_protocol_handle *ph)
+{
+	free(ph);
+	return 0;
+}
+
+struct rfid_protocol rfid_protocol_mful = {
+	.id	= RFID_PROTOCOL_MIFARE_UL,
+	.name	= "Mifare Ultralight",
+	.fn	= {
+		.init 		= &mful_init,
+		/* .transcieve	= &mful_transcieve,*/
+		.read		= &mful_read,
+		.write 		= &mful_write,
+		.fini		= &mful_fini,
+	},
+};
-- 
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