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/**************************************************************************//**
* @file sys.c
* @version V3.00
* $Revision: 6 $
* $Date: 14/01/28 6:58p $
* @brief M051 series SYS driver source file
*
* @note
* Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "M051Series.h"
/** @addtogroup M051_Device_Driver M051 Device Driver
@{
*/
/** @addtogroup M051_SYS_Driver SYS Driver
@{
*/
/** @addtogroup M051_SYS_EXPORTED_FUNCTIONS SYS Exported Functions
@{
*/
/**
* @brief This function clear the selected system reset source
* @param u32Src is system reset source
* @return None
*/
void SYS_ClearResetSrc(uint32_t u32Src)
{
SYS->RSTSRC |= u32Src;
}
/**
* @brief This function get Brown-out detector output status
* @return 0: System voltage is higher than BOD_VL setting or BOD_EN is 0.
* 1: System voltage is lower than BOD_VL setting.
* Note : If the BOD_EN is 0, this function always return 0.
*/
uint32_t SYS_GetBODStatus(void)
{
return (SYS->BODCR & SYS_BODCR_BOD_OUT_Msk) ? 1 : 0;
}
/**
* @brief This function get the system reset source register value
* @return Reset source
*/
uint32_t SYS_GetResetSrc(void)
{
return (SYS->RSTSRC);
}
/**
* @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->REGWRPROT & SYS_REGWRPROT_REGPROTDIS_Msk);
}
/**
* @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->IPRSTC1 |= SYS_IPRSTC1_CHIP_RST_Msk;
}
/**
* @brief This function reset CPU.
* @return None
*/
void SYS_ResetCPU(void)
{
SYS->IPRSTC1 |= SYS_IPRSTC1_CPU_RST_Msk;
}
/**
* @brief This function reset selected modules.
* @param u32ModuleIndex is module index. Including :
* - \ref CHIP_RST
* - \ref CPU_RST
* - \ref EBI_RST
* - \ref HDIV_RST
* - \ref GPIO_RST
* - \ref TMR0_RST
* - \ref TMR1_RST
* - \ref TMR2_RST
* - \ref TMR3_RST
* - \ref I2C0_RST
* - \ref I2C1_RST
* - \ref SPI0_RST
* - \ref SPI1_RST
* - \ref UART0_RST
* - \ref UART1_RST
* - \ref PWM03_RST
* - \ref PWM47_RST
* - \ref ACMP01_RST
* - \ref ACMP23_RST
* - \ref ADC_RST
* @return None
*/
void SYS_ResetModule(uint32_t u32ModuleIndex)
{
*(volatile uint32_t *)(&(SYS->IPRSTC1) + (u32ModuleIndex >> 24)) |= 1 << (u32ModuleIndex & 0x00ffffff);
*(volatile uint32_t *)(&(SYS->IPRSTC1) + (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 i32Mode is reset or interrupt mode. Including :
* - \ref SYS_BODCR_BOD_RST_EN
* - \ref SYS_BODCR_BOD_INTERRUPT_EN
* @param u32BODLevel is Brown-out voltage level. Including :
* - \ref SYS_BODCR_BOD_VL_4_4V
* - \ref SYS_BODCR_BOD_VL_3_7V
* - \ref SYS_BODCR_BOD_VL_2_7V
* - \ref SYS_BODCR_BOD_VL_2_2V
* @return None
*/
void SYS_EnableBOD(int32_t i32Mode, uint32_t u32BODLevel)
{
SYS->BODCR |= SYS_BODCR_BOD_EN_Msk;
SYS->BODCR = (SYS->BODCR & ~SYS_BODCR_BOD_RSTEN_Msk) | i32Mode;
SYS->BODCR = (SYS->BODCR & ~SYS_BODCR_BOD_VL_Msk) | u32BODLevel;
}
/**
* @brief This function disable BOD function.
* @return None
*/
void SYS_DisableBOD(void)
{
SYS->BODCR &= ~SYS_BODCR_BOD_EN_Msk;
}
/*@}*/ /* end of group M051_SYS_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group M051_SYS_Driver */
/*@}*/ /* end of group M051_Device_Driver */
/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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