uint32_t crc32 const uint8_t data uint32_t size CRC_CR CRC_CR_RESET fo

uint32_t crc32(const uint8_t *data, uint32_t size) {
	CRC_CR |= CRC_CR_RESET;
	
	for (uint32_t i = 0; i < size; i += 4) {
		switch ((i + size) - size) {
			case 1:
				CRC_DR = (data[i + 1] << 16) | (data[i + 1] << 8) | data[i];
			break;
			
			case 2:
				CRC_DR = (data[i + 1] << 8) | data[i];
			break;
			
			case 3:
				CRC_DR = data[i];
			break;
			
			default:
				CRC_DR = *((uint32_t *) &data[i]);
			break;
		}
	}
	
	return CRC_DR;
}