Initial import

arphy_fec.h

@@ -0,0 +1,37 @@
+#ifndef HADAMARD_H
+#define	HADAMARD_H
+
+// FEC
+#define MAX_FEC_INPUT_SIZE      8U
+#define MAX_FEC_OUTPUT_SIZE     128U // (2^(MAX_FEC_INPUT_SIZE-1)) non fa
+#define MAX_FEC_PER_BLOCK       4U
+
+#define ARPHY_FEC_TYPE_NONE       0
+#define ARPHY_FEC_TYPE_HADAMARD   1
+#define ARPHY_FEC_TYPE_MAX        1
+
+#define ARPHY_FEC_INPUT_SIZE_NIBBLE 0
+#define ARPHY_FEC_INPUT_SIZE_BYTE   1
+
+
+typedef struct {
+    uint8_t type; ///< algoritmo di FEC
+    uint8_t in_bit_size; ///< net data size in bits
+    uint8_t out_bit_size; ///< code size in bits
+    uint8_t out_symbols_size; ///< code size in symbols
+    uint8_t hamming_distance; ///< 
+    uint8_t sqrsum; // fattore qualita
+} block_code;
+
+extern block_code fec;
+
+// buffer per FEC
+extern int16_t tx_FHT_Buffer[MAX_FEC_OUTPUT_SIZE], rx_FHT_Buffer[MAX_FEC_OUTPUT_SIZE];
+
+void arphy_set_up_FEC(block_code* fec_params);
+void arphy_FEC_encode(uint8_t Chunk, uint8_t ChunkSize, int16_t *DataBuffer);
+uint8_t arphy_FEC_decode(int16_t *DataMatrix);
+void FastHadamardTransform(int16_t *Data, uint8_t fec_size);
+void InverseFastHadamardTransform(int16_t *Data, uint8_t fec_size);
+
+#endif	/* HADAMARD_H */