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/*************************************************************************//**
* @file sys.c
* @version V1.00
* $Revision: 16 $
* $Date: 15/10/21 1:39p $
* @brief NUC472/NUC442 SYS driver source file
*
* @note
* Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "NUC472_442.h"
/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
@{
*/
/** @addtogroup NUC472_442_SYS_Driver SYS Driver
@{
*/
/** @addtogroup NUC472_442_SYS_EXPORTED_FUNCTIONS SYS Exported Functions
@{
*/
/**
* @brief This function clear the selected system reset source
* @param[in] u32RstSrc is system reset source. Including:
* - \ref SYS_RSTSTS_PORF_Msk
* - \ref SYS_RSTSTS_PINRF_Msk
* - \ref SYS_RSTSTS_WDTRF_Msk
* - \ref SYS_RSTSTS_LVRF_Msk
* - \ref SYS_RSTSTS_BODRF_Msk
* - \ref SYS_RSTSTS_SYSRF_Msk
* - \ref SYS_RSTSTS_CPURF_Msk
* @return None
*/
void SYS_ClearResetSrc(uint32_t u32RstSrc)
{
SYS->RSTSTS |= u32RstSrc;
}
/**
* @brief This function get Brown-out detector output status
* @return 0: System voltage is higher than BODVL setting or BODEN is 0.
* 1: System voltage is lower than BODVL setting.
* Note : If the BOD_EN is 0, this function always return 0.
*/
uint32_t SYS_GetBODStatus()
{
return (SYS->BODCTL & SYS_BODCTL_BODOUT_Msk);
}
/**
* @brief This function get the system reset source register value
* @return Reset source
*/
uint32_t SYS_GetResetSrc(void)
{
return (SYS->RSTSTS);
}
/**
* @brief This function check register write-protection bit setting
* @return 0: Write-protection function is disabled.
* 1: Write-protection function is enabled.
*/
uint32_t SYS_IsRegLocked(void)
{
return !(SYS->REGLCTL & SYS_REGLCTL_REGLCTL_Msk);
}
/**
* @brief This function enable register write-protection function
* @return None
* @details To lock the protected register to forbid write access
*/
void SYS_LockReg(void)
{
SYS->REGLCTL = 0;
}
/**
* @brief This function disable register write-protection function
* @return None
* @details To unlock the protected register to allow write access
*/
void SYS_UnlockReg(void)
{
while(SYS->REGLCTL != SYS_REGLCTL_REGLCTL_Msk) {
SYS->REGLCTL = 0x59;
SYS->REGLCTL = 0x16;
SYS->REGLCTL = 0x88;
}
}
/**
* @brief This function get product ID.
* @return Product ID
*/
uint32_t SYS_ReadPDID(void)
{
return SYS->PDID;
}
/**
* @brief This function reset chip.
* @return None
*/
void SYS_ResetChip(void)
{
SYS->IPRST0 |= SYS_IPRST0_CHIPRST_Msk;
}
/**
* @brief This function reset CPU.
* @return None
*/
void SYS_ResetCPU(void)
{
SYS->IPRST0 |= SYS_IPRST0_CPURST_Msk;
}
/**
* @brief This function reset selected modules.
* @param[in] u32ModuleIndex is module index. Including :
* - \ref PDMA_RST
* - \ref EBI_RST
* - \ref USBH_RST
* - \ref EMAC_RST
* - \ref SDH_RST
* - \ref CRC_RST
* - \ref CAP_RST
* - \ref CRYPTO_RST
* - \ref GPIO_RST
* - \ref TMR0_RST
* - \ref TMR1_RST
* - \ref TMR2_RST
* - \ref TMR3_RST
* - \ref ACMP_RST
* - \ref I2C0_RST
* - \ref I2C1_RST
* - \ref I2C2_RST
* - \ref I2C3_RST
* - \ref SPI0_RST
* - \ref SPI1_RST
* - \ref SPI2_RST
* - \ref SPI3_RST
* - \ref UART0_RST
* - \ref UART1_RST
* - \ref UART2_RST
* - \ref UART3_RST
* - \ref UART4_RST
* - \ref UART5_RST
* - \ref CAN0_RST
* - \ref CAN1_RST
* - \ref OTG_RST
* - \ref USBD_RST
* - \ref ADC_RST
* - \ref I2S0_RST
* - \ref I2S1_RST
* - \ref PS2_RST
* - \ref SC0_RST
* - \ref SC1_RST
* - \ref SC2_RST
* - \ref SC3_RST
* - \ref SC4_RST
* - \ref SC5_RST
* - \ref I2C4_RST
* - \ref PWM0_RST
* - \ref PWM1_RST
* - \ref QEI0_RST
* - \ref QEI1_RST
* @return None
*/
void SYS_ResetModule(uint32_t u32ModuleIndex)
{
*(volatile uint32_t *)((uint32_t)&(SYS->IPRST0) + (u32ModuleIndex>>24)) |= 1<<(u32ModuleIndex & 0x00ffffff);
*(volatile uint32_t *)((uint32_t)&(SYS->IPRST0) + (u32ModuleIndex>>24)) &= ~(1<<(u32ModuleIndex & 0x00ffffff));
}
/**
* @brief This function configure BOD function.
* Configure BOD reset or interrupt mode and set Brown-out voltage level.
* Enable Brown-out function
* @param[in] i32Mode is reset or interrupt mode. Including :
* - \ref SYS_BODCTL_BODRSTEN
* - \ref SYS_BODCTL_BODINTEN
* @param[in] u32BODLevel is Brown-out voltage level. Including :
* - \ref SYS_BODCTL_BODVL_2_2V
* - \ref SYS_BODCTL_BODVL_2_7V
* - \ref SYS_BODCTL_BODVL_3_8V
* - \ref SYS_BODCTL_BODVL_4_5V
*
* @return None
*/
void SYS_EnableBOD(int32_t i32Mode, uint32_t u32BODLevel)
{
SYS->BODCTL &= ~(SYS_BODCTL_BODVL_Msk|SYS_BODCTL_BODRSTEN_Msk);
SYS->BODCTL |=(i32Mode|u32BODLevel|SYS_BODCTL_BODEN_Msk);
}
/**
* @brief This function disable BOD function.
* @return None
*/
void SYS_DisableBOD(void)
{
SYS->BODCTL &= ~SYS_BODCTL_BODEN_Msk;
}
/*@}*/ /* end of group NUC472_442_SYS_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group NUC472_442_SYS_Driver */
/*@}*/ /* end of group NUC472_442_Device_Driver */
/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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