openpcd/firmware/src/picc/decoder.h @ master
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#ifndef _DECODER_H
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#define _DECODER_H
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struct decoder_state; |
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struct decoder_algo { |
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uint8_t oversampling_rate; |
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uint8_t bits_per_sampled_char; |
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uint32_t bytesample_mask; |
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int (*decode_sample)(const uint32_t sample, uint8_t data); |
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uint32_t (*get_next_bytesample)(struct decoder_state *st, uint8_t *parity_sample); |
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};
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struct decoder_state { |
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struct decoder_algo *algo; |
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uint8_t bit_ofs; |
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const char *buf; |
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const uint32_t *buf32; |
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};
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extern int decoder_register(int algnum, struct decoder_algo *algo); |
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extern int decoder_decode(uint8_t algo, const char *sample_buf, |
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int sample_buf_size, char *data_buf); |
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#define DECODER_MILLER 0
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#define DECODER_NRZL 1
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#define DECODER_NUM_ALGOS 2
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static struct decoder_algo nrzl_decoder; |
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static struct decoder_algo miller_decoder; |
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#endif
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