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/**************************************************************************//**
* @file fmc.c
* @version V3.00
* $Revision: 11 $
* $Date: 14/01/28 10:49a $
* @brief M051 series FMC driver source file
*
* @note
* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
//* Includes ------------------------------------------------------------------*/
#include <stdio.h>
#include "M051Series.h"
/** @addtogroup M051_Device_Driver M051 Device Driver
@{
*/
/** @addtogroup M051_FMC_Driver FMC Driver
@{
*/
/** @addtogroup M051_FMC_EXPORTED_FUNCTIONS FMC Exported Functions
@{
*/
/**
* @brief Set boot source from LDROM or APROM after next software reset.
*
* @param i32BootSrc[in]
* 1: Boot from LDROM
* 0: Boot from APROM
*
* @details This function is used to switch APROM boot or LDROM boot. User need to call
* FMC_SetBootSource to select boot source first, then use CPU reset or
* System Reset Request to reset system.
*
*/
void FMC_SetBootSource(int32_t i32BootSrc)
{
if(i32BootSrc)
FMC->ISPCON |= FMC_ISPCON_BS_Msk; /* Boot from LDROM */
else
FMC->ISPCON &= ~FMC_ISPCON_BS_Msk;/* Boot from APROM */
}
/**
* @brief Disable ISP Functions
*/
void FMC_Close(void)
{
FMC->ISPCON &= ~FMC_ISPCON_ISPEN_Msk;
}
/**
* @brief Disable APROM update function
*
* @details Disable APROM update function will forbid APROM programming when boot form APROM.
* APROM update is default to be disable.
*
*/
void FMC_DisableAPUpdate(void)
{
FMC->ISPCON &= ~FMC_ISPCON_APUEN_Msk;
}
/**
* @brief Disable User Configuration update function
*
* @details Disable User Configuration update function will forbid User Configuration programming.
* User Configuration update is default to be disable.
*/
void FMC_DisableConfigUpdate(void)
{
FMC->ISPCON &= ~FMC_ISPCON_CFGUEN_Msk;
}
/**
* @brief Disable LDROM update function
*
* @details Disable LDROM update function will forbid LDROM programming.
* LDROM update is default to be disable.
*/
void FMC_DisableLDUpdate(void)
{
FMC->ISPCON &= ~FMC_ISPCON_LDUEN_Msk;
}
/**
* @brief Enable APROM update function
*
* @details Enable APROM to be able to program when boot from APROM.
*
*/
void FMC_EnableAPUpdate(void)
{
FMC->ISPCON |= FMC_ISPCON_APUEN_Msk;
}
/**
* @brief Enable User Configuration update function
*
* @details Enable User Configuration to be able to program.
*
*/
void FMC_EnableConfigUpdate(void)
{
FMC->ISPCON |= FMC_ISPCON_CFGUEN_Msk;
}
/**
* @brief Enable LDROM update function
*
* @details Enable LDROM to be able to program.
*
*/
void FMC_EnableLDUpdate(void)
{
FMC->ISPCON |= FMC_ISPCON_LDUEN_Msk;
}
/**
* @brief Get the current boot source
*
* @retval 0: This chip is currently booting from APROM
* @retval 1: This chip is currently booting from LDROM
*
* @note This function only show the boot source.
* User need to read ISPSTA register to know if IAP mode supported or not in relative boot.
*/
int32_t FMC_GetBootSource(void)
{
if(FMC->ISPCON & FMC_ISPCON_BS_Msk)
return 1;
else
return 0;
}
/**
* @brief Enable FMC ISP function
*
* @details ISPEN bit of ISPCON must be set before we can use ISP commands.
*
*/
void FMC_Open(void)
{
FMC->ISPCON |= FMC_ISPCON_ISPEN_Msk;
}
/**
* @brief Get the base address of Data Flash if enabled.
* @retval The base address of Data Flash
*/
uint32_t FMC_ReadDataFlashBaseAddr(void)
{
return FMC->DFBADR;
}
/**
* @brief Read the User Configuration words.
* @param[out] u32Config The word buffer to store the User Configuration data.
* @param[in] u32Count The word count to be read.
* @retval 0: Success
* @retval -1: Failed
*/
int32_t FMC_ReadConfig(uint32_t *u32Config, uint32_t u32Count)
{
int32_t i;
for(i = 0; i < u32Count; i++)
u32Config[i] = FMC_Read(FMC_CONFIG_BASE + i * 4);
return 0;
}
/**
* @brief Write User Configuration
*
* @param u32Config: The word buffer to store the User Configuration data.
* @param u32Count: The word count to program to User Configuration.
*
* @retval 0: Success
* @retval -1: Failed
*
* @details User must enable User Configuration update before writing it.
* User must erase User Configuration before writing it.
* User Configuration is also be page erase. User needs to backup necessary data
* before erase User Configuration.
*/
int32_t FMC_WriteConfig(uint32_t *u32Config, uint32_t u32Count)
{
int32_t i;
for(i = 0; i < u32Count; i++)
{
FMC_Write(FMC_CONFIG_BASE + i * 4, u32Config[i]);
if(FMC_Read(FMC_CONFIG_BASE + i * 4) != u32Config[i])
return -1;
}
return 0;
}
/*@}*/ /* end of group M051_FMC_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group M051_FMC_Driver */
/*@}*/ /* end of group M051_Device_Driver */
/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
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