Init commit

README.md

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+##IMFlasher
+
+Universal flasher to flash firmware in combination with IMBootloader.

crc32.cpp

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+/*
+ * Copyright (C) 2021 Igor Misic, <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ *
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "crc32.h"
+
+static uint32_t s_crcTable[256] =
+{
+0x00000000,0x04C11DB7,0x09823B6E,0x0D4326D9,0x130476DC,0x17C56B6B,0x1A864DB2,0x1E475005,
+0x2608EDB8,0x22C9F00F,0x2F8AD6D6,0x2B4BCB61,0x350C9B64,0x31CD86D3,0x3C8EA00A,0x384FBDBD,
+0x4C11DB70,0x48D0C6C7,0x4593E01E,0x4152FDA9,0x5F15ADAC,0x5BD4B01B,0x569796C2,0x52568B75,
+0x6A1936C8,0x6ED82B7F,0x639B0DA6,0x675A1011,0x791D4014,0x7DDC5DA3,0x709F7B7A,0x745E66CD,
+0x9823B6E0,0x9CE2AB57,0x91A18D8E,0x95609039,0x8B27C03C,0x8FE6DD8B,0x82A5FB52,0x8664E6E5,
+0xBE2B5B58,0xBAEA46EF,0xB7A96036,0xB3687D81,0xAD2F2D84,0xA9EE3033,0xA4AD16EA,0xA06C0B5D,
+0xD4326D90,0xD0F37027,0xDDB056FE,0xD9714B49,0xC7361B4C,0xC3F706FB,0xCEB42022,0xCA753D95,
+0xF23A8028,0xF6FB9D9F,0xFBB8BB46,0xFF79A6F1,0xE13EF6F4,0xE5FFEB43,0xE8BCCD9A,0xEC7DD02D,
+0x34867077,0x30476DC0,0x3D044B19,0x39C556AE,0x278206AB,0x23431B1C,0x2E003DC5,0x2AC12072,
+0x128E9DCF,0x164F8078,0x1B0CA6A1,0x1FCDBB16,0x018AEB13,0x054BF6A4,0x0808D07D,0x0CC9CDCA,
+0x7897AB07,0x7C56B6B0,0x71159069,0x75D48DDE,0x6B93DDDB,0x6F52C06C,0x6211E6B5,0x66D0FB02,
+0x5E9F46BF,0x5A5E5B08,0x571D7DD1,0x53DC6066,0x4D9B3063,0x495A2DD4,0x44190B0D,0x40D816BA,
+0xACA5C697,0xA864DB20,0xA527FDF9,0xA1E6E04E,0xBFA1B04B,0xBB60ADFC,0xB6238B25,0xB2E29692,
+0x8AAD2B2F,0x8E6C3698,0x832F1041,0x87EE0DF6,0x99A95DF3,0x9D684044,0x902B669D,0x94EA7B2A,
+0xE0B41DE7,0xE4750050,0xE9362689,0xEDF73B3E,0xF3B06B3B,0xF771768C,0xFA325055,0xFEF34DE2,
+0xC6BCF05F,0xC27DEDE8,0xCF3ECB31,0xCBFFD686,0xD5B88683,0xD1799B34,0xDC3ABDED,0xD8FBA05A,
+0x690CE0EE,0x6DCDFD59,0x608EDB80,0x644FC637,0x7A089632,0x7EC98B85,0x738AAD5C,0x774BB0EB,
+0x4F040D56,0x4BC510E1,0x46863638,0x42472B8F,0x5C007B8A,0x58C1663D,0x558240E4,0x51435D53,
+0x251D3B9E,0x21DC2629,0x2C9F00F0,0x285E1D47,0x36194D42,0x32D850F5,0x3F9B762C,0x3B5A6B9B,
+0x0315D626,0x07D4CB91,0x0A97ED48,0x0E56F0FF,0x1011A0FA,0x14D0BD4D,0x19939B94,0x1D528623,
+0xF12F560E,0xF5EE4BB9,0xF8AD6D60,0xFC6C70D7,0xE22B20D2,0xE6EA3D65,0xEBA91BBC,0xEF68060B,
+0xD727BBB6,0xD3E6A601,0xDEA580D8,0xDA649D6F,0xC423CD6A,0xC0E2D0DD,0xCDA1F604,0xC960EBB3,
+0xBD3E8D7E,0xB9FF90C9,0xB4BCB610,0xB07DABA7,0xAE3AFBA2,0xAAFBE615,0xA7B8C0CC,0xA379DD7B,
+0x9B3660C6,0x9FF77D71,0x92B45BA8,0x9675461F,0x8832161A,0x8CF30BAD,0x81B02D74,0x857130C3,
+0x5D8A9099,0x594B8D2E,0x5408ABF7,0x50C9B640,0x4E8EE645,0x4A4FFBF2,0x470CDD2B,0x43CDC09C,
+0x7B827D21,0x7F436096,0x7200464F,0x76C15BF8,0x68860BFD,0x6C47164A,0x61043093,0x65C52D24,
+0x119B4BE9,0x155A565E,0x18197087,0x1CD86D30,0x029F3D35,0x065E2082,0x0B1D065B,0x0FDC1BEC,
+0x3793A651,0x3352BBE6,0x3E119D3F,0x3AD08088,0x2497D08D,0x2056CD3A,0x2D15EBE3,0x29D4F654,
+0xC5A92679,0xC1683BCE,0xCC2B1D17,0xC8EA00A0,0xD6AD50A5,0xD26C4D12,0xDF2F6BCB,0xDBEE767C,
+0xE3A1CBC1,0xE760D676,0xEA23F0AF,0xEEE2ED18,0xF0A5BD1D,0xF464A0AA,0xF9278673,0xFDE69BC4,
+0x89B8FD09,0x8D79E0BE,0x803AC667,0x84FBDBD0,0x9ABC8BD5,0x9E7D9662,0x933EB0BB,0x97FFAD0C,
+0xAFB010B1,0xAB710D06,0xA6322BDF,0xA2F33668,0xBCB4666D,0xB8757BDA,0xB5365D03,0xB1F740B4
+};
+
+static uint32_t reflect(uint32_t data, uint8_t nBits);
+
+uint32_t CalculateCRC32(
+        const uint8_t *crc_DataPtr,
+        uint32_t crc_Length,
+        bool reflectedOutput,
+        bool reflectedInput
+        )
+{
+    uint32_t crc_InitialValue = 0xFFFFFFFF;
+    uint32_t crc_XorValue = 0xFFFFFFFF;
+
+    uint32_t ui32Counter;
+    uint8_t temp;
+    uint32_t crc = crc_InitialValue;
+
+    for (ui32Counter = 0U; ui32Counter < crc_Length; ui32Counter++)
+    {
+        if (reflectedInput)
+        {
+            temp = reflect(*crc_DataPtr, 8);
+        }
+        else
+        {
+            temp = *crc_DataPtr;
+        }
+
+        crc = (crc << 8) ^ s_crcTable[(uint8_t)((crc >> 24) ^ temp)];
+        crc_DataPtr++;
+
+    }
+
+    crc ^= crc_XorValue;
+    if (reflectedOutput)
+    {
+        crc = reflect(crc, sizeof(uint32_t) * 8);
+    }
+    return crc;
+}
+
+static uint32_t reflect(uint32_t data, uint8_t nBits)
+{
+    uint32_t  reflection = 0;
+
+
+    /*
+    * Reflect the data about the center bit.
+    */
+    for (uint8_t bit = 0; bit < nBits; ++bit)
+    {
+        /*
+        * If the LSB bit is set, set the reflection of it.
+        */
+        if (data & 0x01)
+        {
+            reflection |= (1 << ((nBits - 1) - bit));
+        }
+
+        data = (data >> 1);
+    }
+
+    return (reflection);
+
+}   /* reflect() */

crc32.h

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+/*
+ * Copyright (C) 2021 Igor Misic, <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ *
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CRC32_H
+#define CRC32_H
+
+#include "stdint.h"
+
+uint32_t CalculateCRC32(
+        const uint8_t *crc_DataPtr,
+        uint32_t crc_Length,
+        bool reflectedOutput,
+        bool reflectedInput
+        );
+
+#endif // CRC32_H