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/**************************************************************************//**
* @file sys.c
* @version V3.00
* $Revision: 12 $
* $Date: 15/08/11 10:26a $
* @brief M451 series SYS driver source file
*
* @note
* Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "M451Series.h"
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup SYS_Driver SYS Driver
@{
*/
/** @addtogroup SYS_EXPORTED_FUNCTIONS SYS Exported Functions
@{
*/
/**
* @brief Clear reset source
* @param[in] u32Src is system reset source. Including :
* - \ref SYS_RSTSTS_CPURF_Msk
* - \ref SYS_RSTSTS_SYSRF_Msk
* - \ref SYS_RSTSTS_BODRF_Msk
* - \ref SYS_RSTSTS_LVRF_Msk
* - \ref SYS_RSTSTS_WDTRF_Msk
* - \ref SYS_RSTSTS_PINRF_Msk
* - \ref SYS_RSTSTS_PORF_Msk
* @return None
* @details This function clear the selected system reset source.
*/
void SYS_ClearResetSrc(uint32_t u32Src)
{
SYS->RSTSTS |= u32Src;
}
/**
* @brief Get Brown-out detector output status
* @param None
* @retval 0 System voltage is higher than BOD_VL setting or BOD_EN is 0.
* @retval 1 System voltage is lower than BOD_VL setting.
* @details This function get Brown-out detector output status.
*/
uint32_t SYS_GetBODStatus(void)
{
return ((SYS->BODCTL & SYS_BODCTL_BODOUT_Msk) >> SYS_BODCTL_BODOUT_Pos);
}
/**
* @brief Get reset status register value
* @param None
* @return Reset source
* @details This function get the system reset status register value.
*/
uint32_t SYS_GetResetSrc(void)
{
return (SYS->RSTSTS);
}
/**
* @brief Check if register is locked nor not
* @param None
* @retval 0 Write-protection function is disabled.
* 1 Write-protection function is enabled.
* @details This function check register write-protection bit setting.
*/
uint32_t SYS_IsRegLocked(void)
{
return !(SYS->REGLCTL & 0x1);
}
/**
* @brief Get product ID
* @param None
* @return Product ID
* @details This function get product ID.
*/
uint32_t SYS_ReadPDID(void)
{
return SYS->PDID;
}
/**
* @brief Reset chip with chip reset
* @param None
* @return None
* @details This function reset chip with chip reset.
* The register write-protection function should be disabled before using this function.
*/
void SYS_ResetChip(void)
{
SYS->IPRST0 |= SYS_IPRST0_CHIPRST_Msk;
}
/**
* @brief Reset chip with CPU reset
* @param None
* @return None
* @details This function reset CPU with CPU reset.
* The register write-protection function should be disabled before using this function.
*/
void SYS_ResetCPU(void)
{
SYS->IPRST0 |= SYS_IPRST0_CPURST_Msk;
}
/**
* @brief Reset selected module
* @param[in] u32ModuleIndex is module index. Including :
* - \ref PDMA_RST
* - \ref EBI_RST
* - \ref USBH_RST
* - \ref CRC_RST
* - \ref GPIO_RST
* - \ref TMR0_RST
* - \ref TMR1_RST
* - \ref TMR2_RST
* - \ref TMR3_RST
* - \ref ACMP01_RST
* - \ref I2C0_RST
* - \ref I2C1_RST
* - \ref SPI0_RST
* - \ref SPI1_RST
* - \ref SPI2_RST
* - \ref UART0_RST
* - \ref UART1_RST
* - \ref UART2_RST
* - \ref UART3_RST
* - \ref CAN0_RST
* - \ref OTG_RST
* - \ref USBD_RST
* - \ref EADC_RST
* - \ref SC0_RST
* - \ref DAC_RST
* - \ref PWM0_RST
* - \ref PWM1_RST
* - \ref TK_RST
* @return None
* @details This function reset selected module.
*/
void SYS_ResetModule(uint32_t u32ModuleIndex)
{
/* Generate reset signal to the corresponding module */
*(volatile uint32_t *)((uint32_t)&SYS->IPRST0 + (u32ModuleIndex >> 24)) |= 1 << (u32ModuleIndex & 0x00ffffff);
/* Release corresponding module from reset state */
*(volatile uint32_t *)((uint32_t)&SYS->IPRST0 + (u32ModuleIndex >> 24)) &= ~(1 << (u32ModuleIndex & 0x00ffffff));
}
/**
* @brief Enable and configure Brown-out detector function
* @param[in] i32Mode is reset or interrupt mode. Including :
* - \ref SYS_BODCTL_BOD_RST_EN
* - \ref SYS_BODCTL_BOD_INTERRUPT_EN
* @param[in] u32BODLevel is Brown-out voltage level. Including :
* - \ref SYS_BODCTL_BODVL_4_5V
* - \ref SYS_BODCTL_BODVL_3_7V
* - \ref SYS_BODCTL_BODVL_2_7V
* - \ref SYS_BODCTL_BODVL_2_2V
* @return None
* @details This function configure Brown-out detector reset or interrupt mode, enable Brown-out function and set Brown-out voltage level.
* The register write-protection function should be disabled before using this function.
*/
void SYS_EnableBOD(int32_t i32Mode, uint32_t u32BODLevel)
{
/* Enable Brown-out Detector function */
SYS->BODCTL |= SYS_BODCTL_BODEN_Msk;
/* Enable Brown-out interrupt or reset function */
SYS->BODCTL = (SYS->BODCTL & ~SYS_BODCTL_BODRSTEN_Msk) | i32Mode;
/* Select Brown-out Detector threshold voltage */
SYS->BODCTL = (SYS->BODCTL & ~SYS_BODCTL_BODVL_Msk) | u32BODLevel;
}
/**
* @brief Disable Brown-out detector function
* @param None
* @return None
* @details This function disable Brown-out detector function.
* The register write-protection function should be disabled before using this function.
*/
void SYS_DisableBOD(void)
{
SYS->BODCTL &= ~SYS_BODCTL_BODEN_Msk;
}
/*@}*/ /* end of group SYS_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group SYS_Driver */
/*@}*/ /* end of group Standard_Driver */
#ifdef __cplusplus
}
#endif
/*** (C) COPYRIGHT 2014~2015 Nuvoton Technology Corp. ***/
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