/**
 * @copyright 2015 Indie Semiconductor.
 *
 * This file is proprietary to Indie Semiconductor.
 * All rights reserved. Reproduction or distribution, in whole
 * or in part, is forbidden except by express written permission
 * of Indie Semiconductor.
 *
 * @file flash_sfrs.h
 */

#ifndef FLASH_SFRS_H__
#define FLASH_SFRS_H__

#include <stddef.h>
#include <stdint.h>
#include <meta.h>

#define   FLASH_WRITE_1_BYTE    				0x01//
#define   FLASH_WRITE_2_BYTE    				0x01//
#define   FLASH_WRITE_4_BYTE_L    				0x0F//
#define   FLASH_WRITE_4_BYTE_M_ECC    				0x1F0//
#define   FLASH_WRITE_8_BYTE    				0xFF//
#define   FLASH_WRITE_9_BYTE    				0x1FF//

#define   E_FLASH_ERASE_SECTOR    			        0//
#define   E_FLASH_ERASE_CHIP    				1//

#define   E_FLASH_UNLOCK_WRITE		  	                0x55555555U
#define   E_FLASH_UNLOCK_ERASE    		                0x66666666U 
#define   E_FLASH_ERASE_START    			        0x99999999U  
#define   E_FLASH_WRITE_START    			        0xAAAAAAAAU
#define   E_FLASH_UNLOCK_CTRL    			        0xACDC1972U   

#define   NVR_FLASH_WRITE_START    		                0x502901FFU 
#define   NVR_FLASH_ERASE_START    		                0x502901FFU  
 
#define   E_FLASH_CODE_PROTECT    		                0xF2E11047U 
#define   E_FLASH_WRITE_PROTECT    		                0x12100511U


/**
* @brief Flash memory erase sector function.
*
* @param address inside the sector to be erased.
*/
static __INLINE void f_FLASH_EraseSector(__IO uint32_t address)
{
    /* load address */
    FLASH_SFRS->FLADDR.FLASHADDR = (uint32_t)(address>>3U);
    FLASH_SFRS->UNLOCK_CTRL_OP = E_FLASH_UNLOCK_CTRL;
    FLASH_SFRS->CTRL_OPR.CHIPSEL = E_FLASH_ERASE_SECTOR;
    FLASH_SFRS-> UNLOCK_ERASE = E_FLASH_UNLOCK_ERASE;
    FLASH_SFRS-> ERASE_START  = E_FLASH_ERASE_START;
    while(FLASH_SFRS->OPBSY != 0U);
    
    FLASH_SFRS->UNLOCK_CTRL_OP   = 0;
}

/**
* @brief Flash memory write word function.
*
* @param address and data (byte) to be programmed into flash.
* @param data and data (byte) to be programmed into flash.
*/
static __INLINE  void f_FLASH_Write2WordsWithECC(__IO uint32_t address, uint32_t dataL,uint32_t dataH)
{
    FLASH_SFRS->UNLOCK_CTRL_OP   = E_FLASH_UNLOCK_CTRL;
    FLASH_SFRS->CTRL_OPR.BYTESEL = FLASH_WRITE_9_BYTE;
    
    FLASH_SFRS->FLADDR.FLASHADDR = (uint32_t)(address >> 3);
    FLASH_SFRS->DATAL = dataL;
    FLASH_SFRS->DATAM = dataH;
    
    FLASH_SFRS->UNLOCK_WRITE = E_FLASH_UNLOCK_WRITE;
    FLASH_SFRS->FLADDR.NVR   = 0;
    FLASH_SFRS->WRITE_START  = E_FLASH_WRITE_START;
    while(FLASH_SFRS->OPBSY != 0); 
    
    FLASH_SFRS->UNLOCK_CTRL_OP   = 0;  
}


#endif /* __FLASH_SFRS_H__ */