/**
  ******************************************************************************
  * @file    fm33a0xxev_rng.c
  * @author  FM33A0XXEV Application Team
  * @version V1.0.0
  * @date    16-April-2020
  * @brief   This file provides firmware functions to manage the following 
  *          functionalities of....:
  *
*/

/* Includes ------------------------------------------------------------------*/

#include "fm33a0xxev_rng.h"

/** @addtogroup fm33a0xxev_StdPeriph_Driver
  * @{
  */

/** @defgroup RNG 
  * @brief RNG driver modules
  * @{
  */ 

/* RNGʹÄܼĴæÆ÷£¬Èí¼þд1Æô¶¯ (RNG enable)
1£ºÆô¶¯RNG
0£º¹Ø±ÕRNG Ïà¹Øº¯Êý */
void RNG_CR_EN_Setable(FunState NewState)
{
	if (NewState == ENABLE)
	{
		RNG->CR |= (RNG_CR_EN_Msk);
	}
	else
	{
		RNG->CR &= ~(RNG_CR_EN_Msk);
	}
}

FunState RNG_CR_EN_Getable(void)
{
	if (RNG->CR & (RNG_CR_EN_Msk))
	{
		return ENABLE;
	}
	else
	{
		return DISABLE;
	}
}

/* Ëæ»úÊýÉú³É½á¹û»òCRCÔËËã½á¹û¼Ä´æÆ÷£¬Ö»¶Á
(RNG output) Ïà¹Øº¯Êý */
uint32_t RNG_DOR_Read(void)
{
	return (RNG->DOR);
}

/* LFSR״̬±êÖ¾£¬Ö»¶Á (LFSR enable)
1£ºLFSRÔÚÔËÐÐÖУ¬²»¿É½øÐÐCRCÑéÖ¤
0£ºLFSR²»ÔÚÔËÐÐÖУ¬¿É½øÐÐCRCÑéÖ¤
×¢£º±¾¼Ä´æÆ÷²»»áÒýÆðÄ£¿éÖжϣ¬½ö¹©²éѯ Ïà¹Øº¯Êý */
FlagStatus RNG_SR_LFSREN_Chk(void)
{
	if (RNG->SR & (RNG_SR_LFSREN_Msk))
	{
		return SET;
	}
	else
	{
		return RESET;
	}
}

/* Ëæ»úÊýÉú³Éʧ°Ü±êÖ¾£¬Èí¼þд1ÇåÁã (Random Number Fail)
1£ºËæ»úÊýδÄÜͨ¹ýÖÊÁ¿¼ì²â
0£ºËæ»úÊýͨ¹ýÖÊÁ¿¼ì²â Ïà¹Øº¯Êý */
void RNG_SR_RNF_Clr(void)
{
	RNG->SR = RNG_SR_RNF_Msk;
}

FlagStatus RNG_SR_RNF_Chk(void)
{
	if (RNG->SR & RNG_SR_RNF_Msk)
	{
		return SET;
	}
	else
	{
		return RESET;
	}
}

/* CRCʹÄÜ¿ØÖƼĴæÆ÷£¬Èí¼þд1Æô¶¯CRC£¬ÔËËãÍê³ÉºóÓ²¼þ×Ô¶¯ÇåÁã (CRC enable)
1£ºCRCʹÄÜ
0£ºCRC¹Ø±Õ Ïà¹Øº¯Êý */
void RNG_CRC_CR_CRCEN_Setable(FunState NewState)
{
	if (NewState == ENABLE)
	{
		RNG->CRC_CR |= (RNG_CRC_CR_CRCEN_Msk);
	}
	else
	{
		RNG->CRC_CR &= ~(RNG_CRC_CR_CRCEN_Msk);
	}
}

FunState RNG_CRC_CR_CRCEN_Getable(void)
{
	if (RNG->CRC_CR & (RNG_CRC_CR_CRCEN_Msk))
	{
		return ENABLE;
	}
	else
	{
		return DISABLE;
	}
}

/* CRCÔËËãÊý¾ÝÊäÈë¼Ä´æÆ÷ (CRC data input) Ïà¹Øº¯Êý */
void RNG_CRC_DIR_Write(uint32_t SetValue)
{
	RNG->CRC_DIR = (SetValue);
}

uint32_t RNG_CRC_DIR_Read(void)
{
	return (RNG->CRC_DIR);
}

/* CRC¼ÆËãÍê³É±êÖ¾£¬Èí¼þд0ÇåÁã (CRC calculation done)
1£ºCRC¼ÆËãÍê³É
0£ºCRC¼ÆËãδÍê³É Ïà¹Øº¯Êý */
void RNG_CRC_SR_CRCDONE_Clr(void)
{
	RNG->CRC_SR &= ~(RNG_CRC_SR_CRCDONE_Msk);
}

FlagStatus RNG_CRC_SR_CRCDONE_Chk(void)
{
	if (RNG->CRC_SR & RNG_CRC_SR_CRCDONE_Msk)
	{
		return SET;
	}
	else
	{
		return RESET;
	}
}


void RNG_Deinit(void)
{
	//RNG->CR = 0x00000000;
	//RNG->DOR = 0x00000000;
	//RNG->SR = 0x00000000;
	//RNG->CRC_CR = 0x00000000;
	//RNG->CRC_DIR = 0xFFFFFFFF;
	//RNG->CRC_SR = 0x00000000;
}

/******END OF FILE****/