1 files changed, 0 insertions, 112 deletions
diff --git a/openpcd/firmware/src/picc/decoder_miller.c b/openpcd/firmware/src/picc/decoder_miller.c
deleted file mode 100644
index 1394a17..0000000
--- a/openpcd/firmware/src/picc/decoder_miller.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/* 
- * ISO14443A modified Miller decoder
- * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
- *
- * 		LSB First	LSB 	hex
- * Sequence X	0010		0100	0x4
- * Sequence Y	0000		0000	0x0
- * Sequence Z	1000		0001	0x1
- *
- * Logic 1	Sequence X
- * Logic 0	Sequence Y with two exceptions:
- * 		- if there are more contiguous 0, Z used from second one
- * 		- if the first bit after SOF is 0, sequence Z used for all contig 0's
- * SOF		Sequence Z
- * EOF		Logic 0 followed by Sequence Y
- *
- * cmd	   hex	   bits            symbols              hex (quad-sampled)
- *
- * REQA    0x26    S 0110010 E     Z ZXXYZXY ZY		0x10410441
- * WUPA    0x52    S 0100101 E     Z ZXYZXYX YY		0x04041041
- *
- * SOF is 'eaten' by SSC start condition (Compare 0). Remaining bits are
- * mirrored, e.g. samples for LSB of first byte are & 0xf
- *
- */
-
-#include <sys/types.h>
-
-#include <os/dbgu.h>
-#include <picc/decoder.h>
-
-
-#define OVERSAMPLING_RATE	4
-
-/* definitions for four-times oversampling */
-#define SEQ_X	0x4
-#define SEQ_Y	0x0
-#define SEQ_Z	0x1
-
-/* decode a single sampled bit */
-static u_int8_t miller_decode_sampled_bit(u_int32_t sampled_bit)
-{
-	switch (sampled_bit) {
-	case SEQ_X:
-		return 1;
-		break;
-	case SEQ_Z:
-	case SEQ_Y:
-		return 0;
-		break;
-	default:
-		DEBUGP("unknown sequence sample `%x' ", sampled_bit);
-		return 2;
-		break;
-	}
-}
-
-/* decode a single 32bit data sample of an 8bit miller encoded word */
-static int miller_decode_sample(u_int32_t sample, u_int8_t *data)
-{
-	u_int8_t ret = 0;
-	unsigned int i;
-
-	for (i = 0; i < sizeof(sample)/OVERSAMPLING_RATE; i++) {
-		u_int8_t bit = miller_decode_sampled_bit(sample & 0xf);
-
-		if (bit == 1)
-			ret |= 1;
-		/* else do nothing since ret was initialized with 0 */
-
-		/* skip shifting in case of last data bit */
-		if (i == sizeof(sample)/OVERSAMPLING_RATE)
-			break;
-
-		sample = sample >> OVERSAMPLING_RATE;
-		ret = ret << 1;
-	}
-
-	*data = ret;
-
-	return ret;
-}
-
-static u_int32_t get_next_bytesample(struct decoder_state *ms,
-				     u_int8_t *parity_sample)
-{
-	u_int32_t ret = 0;
-
-	/* get remaining bits from the current word */
-	ret = *(ms->buf32) >> ms->bit_ofs;
-	/* move to next word */
-	ms->buf32++;
-
-	/* if required, get remaining bits from next word */
-	if (ms->bit_ofs)
-		ret |= *(ms->buf32) << (32 - ms->bit_ofs);
-	
-	*parity_sample = (*(ms->buf32) >> ms->bit_ofs & 0xf);
-
-	/* increment bit offset (modulo 32) */
-	ms->bit_ofs = (ms->bit_ofs + OVERSAMPLING_RATE) % 32;
-
-	return ret;
-}
-
-static struct decoder_algo miller_decoder = {
-	.oversampling_rate = OVERSAMPLING_RATE,
-	.bits_per_sampled_char = 9 * OVERSAMPLING_RATE,
-	.bytesample_mask = 0xffffffff,
-	.decode_sample = &miller_decode_sample,
-	.get_next_bytesample = &get_next_bytesample,
-};