-uint16_t BigBuf_get_traceLen(void);
-void clear_trace();
-void set_tracing(bool enable);
-bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag);
-int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwParity, int bReader);
+extern uint16_t BigBuf_get_traceLen(void);
+extern void clear_trace();
+extern void set_tracing(bool enable);
+extern bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag);
+extern int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwParity, int bReader);
+extern uint8_t emlSet(uint8_t *data, uint32_t offset, uint32_t length);