170 lines
7.5 KiB
C
170 lines
7.5 KiB
C
//
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// Created by cfif on 21.04.2026.
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//
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#include "crc32_uds.h"
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#include "fc7xxx_driver_crc.h"
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#include "SystemDelayInterface.h"
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// Таблица CRC32, предвычисленная для полинома 0xEDB88320UL (отражённая форма 0x04C11DB7)
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static const uint32_t crc_table[256] = {
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0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
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0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
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0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
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0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
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0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
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0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
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0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
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0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
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0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
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0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
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0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
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0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
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0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
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0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
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0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
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0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
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0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
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0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
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0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
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0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
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0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
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0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
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0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
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0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
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0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
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0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
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0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
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0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
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0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
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0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
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0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
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0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
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0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
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0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
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0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
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0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
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0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
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0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
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0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
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0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
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0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
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0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
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0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
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};
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uint32_t
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UdsCrc32Update(uint32_t crc, const uint8_t *data, uint32_t len, crc32_update_func update_func, void *update_func_env,
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uint32_t timeout) {
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uint32_t time = SystemGetMs() + timeout;
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// Обрабатываем выровненные 4-байтовые блоки
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while (len >= 4) {
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uint32_t word = *(const uint32_t*)data;
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// Оптимизированная обработка 4 байт за раз
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crc = (crc >> 8) ^ crc_table[(crc ^ (word >> 0)) & 0xFF];
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crc = (crc >> 8) ^ crc_table[(crc ^ (word >> 8)) & 0xFF];
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crc = (crc >> 8) ^ crc_table[(crc ^ (word >> 16)) & 0xFF];
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crc = (crc >> 8) ^ crc_table[(crc ^ (word >> 24)) & 0xFF];
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if (SystemGetMs() > time) {
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update_func(update_func_env);
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time = SystemGetMs() + timeout;
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}
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data += 4;
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len -= 4;
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}
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// Обрабатываем оставшиеся байты (0-3 байта)
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while (len--) {
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crc = (crc >> 8) ^ crc_table[(crc ^ *data++) & 0xFF];
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}
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return crc;
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}
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uint32_t UdsCrc32Finalize(uint32_t crc) {
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return crc ^ 0xFFFFFFFF;
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}
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#include "fc7xxx_driver_crc.h"
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/**
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* @brief Hardware CRC-32 update function
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*
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* Configuration that works (Test 2):
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* - Polynomial: 0x04C11DB7 (direct form)
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* - Write data swap: BYTE_BIT (byte + bit reflection on input)
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* - Read data swap: BYTE_BIT (byte + bit reflection on output)
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* - Read data FXOR: FXOR (final XOR with 0xFFFFFFFF)
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*
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* This matches the software implementation that uses reflected polynomial 0xEDB88320.
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*
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* @param crc Initial CRC value (0xFFFFFFFF for new calculation)
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* @param data Pointer to data buffer
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* @param len Length of data in bytes
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* @param update_func Callback for timeout (can be NULL)
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* @param update_func_env Environment for callback
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* @param timeout Timeout in milliseconds
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* @return uint32_t Updated CRC value
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*/
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uint32_t UdsCrc32Update_Hardware(uint32_t crc, const uint8_t *data, uint32_t len,
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crc32_update_func update_func, void *update_func_env,
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uint32_t timeout)
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{
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CRC_InitType tInitCfg = {0};
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uint32_t u32Time = SystemGetMs() + timeout;
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uint32_t u32Result;
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/* Конфигурация из Test 2 */
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tInitCfg.u32Polynomial = 0x04C11DB7UL; /* Прямой полином */
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tInitCfg.u32SeedValue = crc; /* Начальное значение */
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tInitCfg.eBitWidth = CRC_BIT_32; /* 32-битный режим */
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tInitCfg.eWriteDataSwap = WRITE_DATASWAP_BIT_BYTE; /* Байтовый + битовый swap на входе */
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tInitCfg.eReadDataSwap = READ_DATASWAP_BIT_BYTE; /* Байтовый + битовый swap на выходе */
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tInitCfg.eReadDataFXOR = READ_DATA_FXOR; /* Финальная инверсия (XOR 0xFFFFFFFF) */
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CRC_Init(CRC_INSTANCE, &tInitCfg);
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/* Обработка данных 32-битными словами для скорости */
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while (len >= 4)
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{
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uint32_t u32Word = *(const uint32_t*)data;
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CRC_SetCalcData_U32(CRC_INSTANCE, u32Word);
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if (update_func != NULL)
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{
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if (SystemGetMs() > u32Time)
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{
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update_func(update_func_env);
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u32Time = SystemGetMs() + timeout;
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}
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}
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data += 4;
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len -= 4;
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}
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/* Обработка оставшихся байтов (0-3) */
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while (len--)
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{
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CRC_SetCalcData_U8(CRC_INSTANCE, *data++);
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if (update_func != NULL)
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{
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if (SystemGetMs() > u32Time)
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{
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update_func(update_func_env);
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u32Time = SystemGetMs() + timeout;
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}
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}
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}
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/* Получаем результат (уже с FXOR) */
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u32Result = CRC_GetCrcResult(CRC_INSTANCE);
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return u32Result;
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}
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