mbed library sources. Supersedes mbed-src.
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Diff: targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_sys.c
- Revision:
- 149:156823d33999
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_sys.c Fri Oct 28 11:17:30 2016 +0100 @@ -0,0 +1,213 @@ +/**************************************************************************//** + * @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. ***/