/*
 * crc.c
 *
 *  Created on: 19 Dec 2025
 *      Author: janik
 */

#include "crc.h"

void CRC8_107_add(CRC8_107 *ctx, uint8_t data)
{
    ctx->crc ^= ((uint32_t)data << 8);
    for (size_t bit_n = 0; bit_n < 8; bit_n++) {
        if (ctx->crc & 0x8000u) {
            ctx->crc ^= ((uint32_t)0x1070u << 3);  // same as 0x8380
        }
        ctx->crc <<= 1;
    }
}

uint8_t CRC8_107_getChecksum(const CRC8_107 *ctx)
{
    return (uint8_t)(ctx->crc >> 8);
}