Diff: CRC_HW.h

Revision:

2:8741619dfd64

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CRC_HW.h	Wed Nov 23 22:08:34 2016 +0000
@@ -0,0 +1,45 @@
+
+#if !defined(CRC_HW_h)
+#define CRC_HW__h
+#include "inttypes.h"
+#include "mbed.h"
+
+// ================= DEFINES ===================
+#define CRC_FLAG_OFF               (((1<<31) | (1<<30)) | ((0<<29) | (0<<28))) //refin=false refout=false
+#define CRC_FLAG_TOT00_TOTR00      (((0<<31) | (0<<30)) | ((0<<29) | (0<<28))) //refin=false refout=true
+#define CRC_FLAG_TOT00_TOTR11      (((0<<31) | (0<<30)) | ((1<<29) | (1<<28))) //refin=false refout=true
+#define CRC_FLAG_TOT11_TOTR00      (((1<<31) | (1<<30)) | ((0<<29) | (0<<28))) //refin=false refout=false
+#define CRC_FLAG_TOT11_TOTR11      (((1<<31) | (1<<30)) | ((1<<29) | (1<<28))) //refin=true refout=true
+#define CRC_FLAG_XOR               (1<<26)                                     //Perform XOR on result
+
+
+// ================= 16-BIT CRC ===================
+
+class FastCRC16
+{
+public:
+  FastCRC16();
+  uint16_t xmodem(uint16_t poly, uint16_t data);
+  uint16_t generic(const uint16_t polynom, const uint16_t seed, const uint32_t flags, uint16_t data);
+
+private:
+  uint16_t seed;
+  uint16_t update(uint16_t data);
+
+};
+
+// ================= 32-BIT CRC ===================
+
+class FastCRC32
+{
+public:
+  FastCRC32();
+  uint32_t crc32(const uint8_t *data, const uint16_t datalen);      
+  uint32_t generic(const uint32_t polyom, const uint32_t seed, const uint32_t flags, const uint8_t *data, const uint16_t datalen); 
+
+private:
+  uint32_t seed;
+  uint32_t update(const uint8_t *data, const uint16_t datalen);
+};
+
+#endif
\ No newline at end of file