/********************************** (C) COPYRIGHT ******************************* * File Name : core_riscv.h * Author : WCH * Version : V1.0.0 * Date : 2022/08/08 * Description : RISC-V Core Peripheral Access Layer Header File ********************************************************************************* * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd. * Attention: This software (modified or not) and binary are used for * microcontroller manufactured by Nanjing Qinheng Microelectronics. *******************************************************************************/ #ifndef __CORE_RISCV_H__ #define __CORE_RISCV_H__ #ifdef __cplusplus extern "C" { #endif /* IO definitions */ #ifdef __cplusplus #define __I volatile /* defines 'read only' permissions */ #else #define __I volatile const /* defines 'read only' permissions */ #endif #define __O volatile /* defines 'write only' permissions */ #define __IO volatile /* defines 'read / write' permissions */ /* Standard Peripheral Library old types (maintained for legacy purpose) */ typedef __I uint32_t vuc32; /* Read Only */ typedef __I uint16_t vuc16; /* Read Only */ typedef __I uint8_t vuc8; /* Read Only */ typedef const uint32_t uc32; /* Read Only */ typedef const uint16_t uc16; /* Read Only */ typedef const uint8_t uc8; /* Read Only */ typedef __I int32_t vsc32; /* Read Only */ typedef __I int16_t vsc16; /* Read Only */ typedef __I int8_t vsc8; /* Read Only */ typedef const int32_t sc32; /* Read Only */ typedef const int16_t sc16; /* Read Only */ typedef const int8_t sc8; /* Read Only */ typedef __IO uint32_t vu32; typedef __IO uint16_t vu16; typedef __IO uint8_t vu8; typedef uint32_t u32; typedef uint16_t u16; typedef uint8_t u8; typedef __IO int32_t vs32; typedef __IO int16_t vs16; typedef __IO int8_t vs8; typedef int32_t s32; typedef int16_t s16; typedef int8_t s8; typedef enum {NoREADY = 0, READY = !NoREADY} ErrorStatus; typedef enum {DISABLE = 0, ENABLE = !DISABLE} FunctionalState; typedef enum {RESET = 0, SET = !RESET} FlagStatus, ITStatus; #define RV_STATIC_INLINE static inline /* memory mapped structure for Program Fast Interrupt Controller (PFIC) */ typedef struct{ __I uint32_t ISR[8]; __I uint32_t IPR[8]; __IO uint32_t ITHRESDR; __IO uint32_t RESERVED; __IO uint32_t CFGR; __I uint32_t GISR; __IO uint8_t VTFIDR[4]; uint8_t RESERVED0[12]; __IO uint32_t VTFADDR[4]; uint8_t RESERVED1[0x90]; __O uint32_t IENR[8]; uint8_t RESERVED2[0x60]; __O uint32_t IRER[8]; uint8_t RESERVED3[0x60]; __O uint32_t IPSR[8]; uint8_t RESERVED4[0x60]; __O uint32_t IPRR[8]; uint8_t RESERVED5[0x60]; __IO uint32_t IACTR[8]; uint8_t RESERVED6[0xE0]; __IO uint8_t IPRIOR[256]; uint8_t RESERVED7[0x810]; __IO uint32_t SCTLR; }PFIC_Type; /* memory mapped structure for SysTick */ typedef struct { __IO uint32_t CTLR; __IO uint32_t SR; __IO uint32_t CNT; uint32_t RESERVED0; __IO uint32_t CMP; uint32_t RESERVED1; }SysTick_Type; #define PFIC ((PFIC_Type *) 0xE000E000 ) #define NVIC PFIC #define NVIC_KEY1 ((uint32_t)0xFA050000) #define NVIC_KEY2 ((uint32_t)0xBCAF0000) #define NVIC_KEY3 ((uint32_t)0xBEEF0000) #define SysTick ((SysTick_Type *) 0xE000F000) /********************************************************************* * @fn __enable_irq * * @brief Enable Global Interrupt * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void __enable_irq() { uint32_t result; __asm volatile("csrr %0," "mstatus": "=r"(result)); result |= 0x88; __asm volatile ("csrw mstatus, %0" : : "r" (result) ); } /********************************************************************* * @fn __disable_irq * * @brief Disable Global Interrupt * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void __disable_irq() { uint32_t result; __asm volatile("csrr %0," "mstatus": "=r"(result)); result &= ~0x88; __asm volatile ("csrw mstatus, %0" : : "r" (result) ); } /********************************************************************* * @fn __NOP * * @brief nop * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void __NOP() { __asm volatile ("nop"); } /********************************************************************* * @fn NVIC_EnableIRQ * * @brief Enable Interrupt * * @param IRQn - Interrupt Numbers * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn) { NVIC->IENR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); } /********************************************************************* * @fn NVIC_DisableIRQ * * @brief Disable Interrupt * * @param IRQn - Interrupt Numbers * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn) { NVIC->IRER[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); } /********************************************************************* * @fn NVIC_GetStatusIRQ * * @brief Get Interrupt Enable State * * @param IRQn - Interrupt Numbers * * @return 1 - Interrupt Pending Enable * 0 - Interrupt Pending Disable */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE uint32_t NVIC_GetStatusIRQ(IRQn_Type IRQn) { return((uint32_t) ((NVIC->ISR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); } /********************************************************************* * @fn NVIC_GetPendingIRQ * * @brief Get Interrupt Pending State * * @param IRQn - Interrupt Numbers * * @return 1 - Interrupt Pending Enable * 0 - Interrupt Pending Disable */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn) { return((uint32_t) ((NVIC->IPR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); } /********************************************************************* * @fn NVIC_SetPendingIRQ * * @brief Set Interrupt Pending * * @param IRQn - Interrupt Numbers * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn) { NVIC->IPSR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); } /********************************************************************* * @fn NVIC_ClearPendingIRQ * * @brief Clear Interrupt Pending * * @param IRQn - Interrupt Numbers * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn) { NVIC->IPRR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); } /********************************************************************* * @fn NVIC_GetActive * * @brief Get Interrupt Active State * * @param IRQn - Interrupt Numbers * * @return 1 - Interrupt Active * 0 - Interrupt No Active */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE uint32_t NVIC_GetActive(IRQn_Type IRQn) { return((uint32_t)((NVIC->IACTR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); } /********************************************************************* * @fn NVIC_SetPriority * * @brief Set Interrupt Priority * * @param IRQn - Interrupt Numbers * priority: bit[7] - pre-emption priority * bit[6] - subpriority * bit[5:0] - reserved * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint8_t priority) { NVIC->IPRIOR[(uint32_t)(IRQn)] = priority; } /********************************************************************* * @fn __WFI * * @brief Wait for Interrupt * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void __WFI(void) { NVIC->SCTLR &= ~(1<<3); // wfi asm volatile ("wfi"); } /********************************************************************* * @fn _SEV * * @brief Set Event * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void _SEV(void) { uint32_t t; t = NVIC->SCTLR; NVIC->SCTLR |= (1<<3)|(1<<5); NVIC->SCTLR = (NVIC->SCTLR & ~(1<<5)) | ( t & (1<<5)); } /********************************************************************* * @fn _WFE * * @brief Wait for Events * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void _WFE(void) { NVIC->SCTLR |= (1<<3); asm volatile ("wfi"); } /********************************************************************* * @fn __WFE * * @brief Wait for Events * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void __WFE(void) { _SEV(); _WFE(); _WFE(); } /********************************************************************* * @fn SetVTFIRQ * * @brief Set VTF Interrupt * * @param addr - VTF interrupt service function base address. * IRQn - Interrupt Numbers * num - VTF Interrupt Numbers * NewState - DISABLE or ENABLE * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void SetVTFIRQ(uint32_t addr, IRQn_Type IRQn, uint8_t num, FunctionalState NewState){ if(num > 1) return ; if (NewState != DISABLE) { NVIC->VTFIDR[num] = IRQn; NVIC->VTFADDR[num] = ((addr&0xFFFFFFFE)|0x1); } else{ NVIC->VTFIDR[num] = IRQn; NVIC->VTFADDR[num] = ((addr&0xFFFFFFFE)&(~0x1)); } } /********************************************************************* * @fn NVIC_SystemReset * * @brief Initiate a system reset request * * @return none */ __attribute__( ( always_inline ) ) RV_STATIC_INLINE void NVIC_SystemReset(void) { NVIC->CFGR = NVIC_KEY3|(1<<7); } /* Core_Exported_Functions */ extern uint32_t __get_MSTATUS(void); extern void __set_MSTATUS(uint32_t value); extern uint32_t __get_MISA(void); extern void __set_MISA(uint32_t value); extern uint32_t __get_MTVEC(void); extern void __set_MTVEC(uint32_t value); extern uint32_t __get_MSCRATCH(void); extern void __set_MSCRATCH(uint32_t value); extern uint32_t __get_MEPC(void); extern void __set_MEPC(uint32_t value); extern uint32_t __get_MCAUSE(void); extern void __set_MCAUSE(uint32_t value); extern uint32_t __get_MVENDORID(void); extern uint32_t __get_MARCHID(void); extern uint32_t __get_MIMPID(void); extern uint32_t __get_MHARTID(void); extern uint32_t __get_SP(void); #ifdef __cplusplus } #endif #endif/* __CORE_RISCV_H__ */