/********************************** (C) COPYRIGHT *******************************
 * File Name          : main.c
 * Author             : WCH
 * Version            : V1.0.0
 * Date               : 2021/06/06
 * Description        : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for 
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/

/*
 *@Note
 CRC routine:
 Use CRC-32 polynomial 0x4C11DB7.

*/

#include "debug.h"

/* Global define */
#define Buf_Size    32

/* Global Variable */
u32 SRC_BUF[Buf_Size] = {0x01020304, 0x05060708, 0x090A0B0C, 0x0D0E0F10,
                         0x11121314, 0x15161718, 0x191A1B1C, 0x1D1E1F20,
                         0x21222324, 0x25262728, 0x292A2B2C, 0x2D2E2F30,
                         0x31323334, 0x35363738, 0x393A3B3C, 0x3D3E3F40,
                         0x41424344, 0x45464748, 0x494A4B4C, 0x4D4E4F50,
                         0x51525354, 0x55565758, 0x595A5B5C, 0x5D5E5F60,
                         0x61626364, 0x65666768, 0x696A6B6C, 0x6D6E6F70,
                         0x71727374, 0x75767778, 0x797A7B7C, 0x7D7E7F80};

u32 CRCValue = 0;
/*********************************************************************
 * @fn      main
 *
 * @brief   Main program.
 *
 * @return  none
 */
int main(void)
{
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
    Delay_Init();
    USART_Printf_Init(115200);
    printf("SystemClk:%d\r\n", SystemCoreClock);

    printf("CRC TEST\r\n");
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_CRC, ENABLE);
    CRCValue = CRC_CalcBlockCRC((u32 *)SRC_BUF, Buf_Size);

    printf("CRCValue: 0x%08x\r\n", CRCValue); /* CRCValue should be 0x199AC3CA in this example */
    while(1);
}