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@@ -14,6 +14,8 @@
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#include "shellmatta_crc.h"
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+#ifdef SHELLMATTA_TRANSPORT
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+
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#ifndef SHELLMATTA_TRANSPORT_CRC_NO_LOOKUP
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/** \brief CRC Lookup table for 0x04c11db7 reflected */
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uint32_t crc32Table[] = {
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@@ -50,31 +52,29 @@ uint32_t crc32Table[] = {
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0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
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0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
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};
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-#endif
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-#ifndef SHELLMATTA_YMODEM_CRC_NO_LOOKUP
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-/** \brief CRC lookup table for 0x1021 non-reflected */
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-uint16_t crc16Table[] = {
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- 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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- 0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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- 0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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- 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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- 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823, 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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- 0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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- 0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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- 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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- 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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- 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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- 0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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- 0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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- 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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- 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A, 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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- 0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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- 0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
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-};
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-#endif
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+/**
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+ * @brief Computes the crc32-checksum of a buffer. O(n)
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+ * @param[in] data pointer to data buffer
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+ * @param[in] size amount of bytes to be processed
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+ * @param[in] lookupTable pointer to uint32_t lookup table for crc computation
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+ * @return crc calculated crc32 value
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+ */
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+static uint32_t crc32Fast(const char* data, uint32_t size, const uint32_t* lookupTable)
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+{
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+ uint32_t i;
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+ uint32_t crcTemp = 0xffffffffu;
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+
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+ for (i = 0u; i < size; i++)
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+ {
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+ uint8_t index = data[i] ^ (crcTemp & 0xffu);
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+ crcTemp = lookupTable[index] ^ (crcTemp >> 8u);
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+ }
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-#ifdef SHELLMATTA_TRANSPORT_CRC_NO_LOOKUP
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+ return ~crcTemp;
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+}
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+
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+#else
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/**
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* @brief Reverses bits of a value.
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* @param[in] x input value
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@@ -130,27 +130,6 @@ static uint32_t crc32Slow(const char* data, uint32_t size)
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return crcTemp;
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}
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-#else
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-/**
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- * @brief Computes the crc32-checksum of a buffer. O(n)
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- * @param[in] data pointer to data buffer
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- * @param[in] size amount of bytes to be processed
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- * @param[in] lookupTable pointer to uint32_t lookup table for crc computation
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- * @return crc calculated crc32 value
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- */
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-static uint32_t crc32Fast(const char* data, uint32_t size, const uint32_t* lookupTable)
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-{
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- uint32_t i;
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- uint32_t crcTemp = 0xffffffffu;
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-
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- for (i = 0u; i < size; i++)
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- {
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- uint8_t index = data[i] ^ (crcTemp & 0xffu);
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- crcTemp = lookupTable[index] ^ (crcTemp >> 8u);
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- }
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-
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- return ~crcTemp;
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-}
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#endif /* SHELLMATTA_TRANSPORT_CRC_NO_LOOKUP */
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/**
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@@ -168,7 +147,47 @@ uint32_t crc32Calc(const char* data, uint32_t size)
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#endif
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}
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-#ifdef SHELLMATTA_YMODEM_CRC_NO_LOOKUP
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+#endif /* SHELLMATTA_TRANSPORT */
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+
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+#ifndef SHELLMATTA_YMODEM_CRC_NO_LOOKUP
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+/** \brief CRC lookup table for 0x1021 non-reflected */
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+uint16_t crc16Table[] = {
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+ 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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+ 0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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+ 0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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+ 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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+ 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823, 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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+ 0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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+ 0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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+ 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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+ 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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+ 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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+ 0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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+ 0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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+ 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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+ 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A, 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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+ 0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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+ 0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
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+};
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+
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+/**
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+ * @brief Computes the crc16-checksum of a buffer. O(n)
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+ * @param[in] data pointer to data buffer
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+ * @param[in] size amount of bytes to be processed
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+ * @param[in] lookupTable pointer to uint16_t lookup table for crc computation
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+ * @return crc calculated crc16 value
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+*/
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+uint16_t crc16Fast(const char* data, uint32_t size, const uint16_t* lookupTable)
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+{
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+ uint32_t counter;
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+ uint16_t crc = 0;
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+ for(counter = 0; counter < size; counter++)
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+ crc = (crc<<8) ^ lookupTable[((crc>>8) ^ *(char *)data++)&0x00FF];
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+ return crc;
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+}
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+
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+#else
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+
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/**
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* @brief Computes the crc16-checksum of a buffer. O(8n)
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* @param[in] data pointer to data buffer
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@@ -198,22 +217,6 @@ uint16_t crc16Slow(const char* data, uint32_t size)
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return (crc & 0xFFFF);
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}
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-#else
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-/**
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- * @brief Computes the crc16-checksum of a buffer. O(n)
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- * @param[in] data pointer to data buffer
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- * @param[in] size amount of bytes to be processed
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- * @param[in] lookupTable pointer to uint16_t lookup table for crc computation
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- * @return crc calculated crc16 value
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-*/
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-uint16_t crc16Fast(const char* data, uint32_t size, const uint16_t* lookupTable)
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-{
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- uint32_t counter;
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- uint16_t crc = 0;
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- for(counter = 0; counter < size; counter++)
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- crc = (crc<<8) ^ lookupTable[((crc>>8) ^ *(char *)data++)&0x00FF];
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- return crc;
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-}
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#endif /* SHELLMATTA_YMODEM_CRC_NO_LOOKUP */
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/**
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@@ -229,4 +232,4 @@ uint16_t crc16Calc(const char* data, uint32_t size)
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#else
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return crc16Fast(data, size, crc16Table);
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#endif /* SHELLMATTA_YMODEM_CRC_NO_LOOKUP */
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-}
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+}
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